Compare commits
No commits in common. "trace-v3" and "master" have entirely different histories.
@ -65,5 +65,5 @@ to write the duplicated value with no error.
|
||||
A unique function can be set to each channel which will be called once a channel
|
||||
becomes dirty with `chan_set_dirty_cb()`. This callback will be called before
|
||||
`chan_set()`, `chan_push()` or `chan_pop()` returns. The [patch
|
||||
bay](patchbay.md) uses this callback to detect when a channel is modified an run
|
||||
bay](../patchbay) uses this callback to detect when a channel is modified an run
|
||||
other callbacks.
|
||||
|
||||
@ -22,7 +22,7 @@ If the model is not enabled, no other function will be called.
|
||||
|
||||
The create function is called for each enabled model to allow them to allocate
|
||||
all the required structures to perform the emulation using the
|
||||
[extend](extend.md) mechanism. All the required channels must be created and
|
||||
[extend](../extend) mechanism. All the required channels must be created and
|
||||
registered in the patch bay in this function, so other models can found them in
|
||||
the next stage.
|
||||
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
# Mux
|
||||
|
||||
The emulator provides a mechanism to interconnect [channels](channels.md) in a
|
||||
The emulator provides a mechanism to interconnect [channels](../channels) in a
|
||||
similar way as an [analog
|
||||
multiplexer](https://en.wikipedia.org/wiki/Multiplexer) by using the `mux`
|
||||
module.
|
||||
@ -19,7 +19,7 @@ selected. This allows a multiplexer to act as a filter too.
|
||||
|
||||
The typical use of multiplexers is to implement the tracking modes of channels.
|
||||
As an example, the following diagram shows two multiplexers used to implement
|
||||
the subsystem view of [Nanos6](../user/emulation/nanos6.md):
|
||||
the subsystem view of [Nanos6](../nanos6):
|
||||
|
||||
|
||||
|
||||
@ -51,5 +51,5 @@ Multiplexers allow models to interact with each other in a controlled way. In
|
||||
the example, the blue channel (*nanos6.thread0.subsystem*) is directly modified by
|
||||
the Nanos6 model when a new event is received. While the red channels are
|
||||
controlled by the ovni model. The rest of the channels are automatically updated
|
||||
in the propagation phase of the [bay](patchbay.md) allowing the ovni model to
|
||||
in the propagation phase of the [bay](../patchbay) allowing the ovni model to
|
||||
modify the Nanos6 Paraver view of the subsystems.
|
||||
|
||||
@ -16,7 +16,7 @@ A channel can be connected to each row in a trace with `prv_register()`, so the
|
||||
new values of the channel get written in the trace. Only null and int64 data
|
||||
values are supported for now.
|
||||
|
||||
The emission phase is controlled by the [patch bay](patchbay.md) and runs all
|
||||
The emission phase is controlled by the [patch bay](../patchbay) and runs all
|
||||
the emit callbacks at once for all dirty channels.
|
||||
|
||||
## Duplicate values
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
# Patch bay
|
||||
|
||||
The patch bay (or simply bay) allows [channels](channels.md) to be registered
|
||||
The patch bay (or simply bay) allows [channels](../channels/) to be registered
|
||||
with their name so they are visible to all parts of the emulator and provides a
|
||||
way to run callbacks when the channels update their values.
|
||||
|
||||
|
||||
@ -13,9 +13,8 @@ The ovni project implements a fast instrumentation library that records
|
||||
small events (starting at 12 bytes) during the execution of programs to
|
||||
later investigate how the execution happened.
|
||||
|
||||
The instrumentation process is split in two stages:
|
||||
[runtime](user/runtime/index.md)
|
||||
tracing and [emulation](user/emulation/index.md).
|
||||
The instrumentation process is split in two stages: [runtime](runtime)
|
||||
tracing and [emulation](emulation/).
|
||||
|
||||
During runtime, very short binary events are stored on disk which
|
||||
describe what is happening. Once the execution finishes, the events are
|
||||
|
||||
31
doc/user/concepts.md
Normal file
31
doc/user/concepts.md
Normal file
@ -0,0 +1,31 @@
|
||||
# Overview
|
||||
|
||||
The objective of the ovni project is to provide insight into what
|
||||
happened at execution of a program.
|
||||
|
||||
|
||||
|
||||
The key pieces of software involved are instrumented so they emit events
|
||||
during the execution which allow the reconstruction of the execution
|
||||
later on.
|
||||
|
||||
During the execution phase, the information gathered in the events is
|
||||
kept very short and simple, so the overhead is kept at minimum to avoid
|
||||
disturbing the execution process. Here is an example of a single event
|
||||
emitted during the execution phase, informing the current thread to
|
||||
finish the execution:
|
||||
|
||||
00 4f 48 65 52 c0 27 b4 d3 ec 01 00
|
||||
|
||||
During the emulation phase, the events are read and processed in the
|
||||
emulator, reconstructing the execution. State transitions are recorded
|
||||
in a Paraver trace. Here is an example of the same thread ceasing the
|
||||
execution:
|
||||
|
||||
2:0:1:1:1:50105669:1:0
|
||||
|
||||
Finally, loading the trace in the Paraver program, we can generate a
|
||||
timeline visualization of the state change. Here is the example for the
|
||||
same state transition of the thread stopping the execution:
|
||||
|
||||
|
||||
@ -1,62 +0,0 @@
|
||||
# Part model
|
||||
|
||||
Ovni has a model to represent the hardware components as well as the software
|
||||
concepts like threads or processes. Each concept is considered to be a *part*.
|
||||
Here is an example diagram depicting the part hierarchy:
|
||||
|
||||
|
||||
|
||||
Notice how a loom can restrict the CPUs of the node to its child processes.
|
||||
|
||||
## Software parts
|
||||
|
||||
These are not physical parts, but they abstract common concepts.
|
||||
|
||||
### Thread
|
||||
|
||||
A thread in ovni is directly mapped to a [POSIX
|
||||
thread](https://en.wikipedia.org/wiki/Pthreads) and they are identified by a
|
||||
`TID` which must be unique in a [node](#node). Threads in ovni have [a model with
|
||||
an internal state](../emulation/ovni.md/#thread_model) that tries to tracks the
|
||||
state of the real thread.
|
||||
|
||||
### Process
|
||||
|
||||
A process is directly mapped to a UNIX
|
||||
[process](https://en.wikipedia.org/wiki/Process_(computing)) and they are
|
||||
identified by a `PID` number which must be unique in a [node](#node).
|
||||
|
||||
### Loom
|
||||
|
||||
A loom has no direct mapping to a usual concept. It consists of a set of
|
||||
[CPUs](#cpu) from the same node and a set of processes that can *only run in
|
||||
those CPUs*. Each CPUs must belong to one and only one loom. It is often used
|
||||
to group CPUs that belong to the same process when running workloads with
|
||||
multiple processes (like with MPI).
|
||||
|
||||
Each loom has a virtual CPU which collects running threads that are not
|
||||
exclusively assigned to a physical CPU, so we cannot determine on which CPU they
|
||||
are running.
|
||||
|
||||
## Hardware parts
|
||||
|
||||
These parts have a physical object assigned.
|
||||
|
||||
### CPU
|
||||
|
||||
A CPU is a hardware thread that can execute at most one thread at a time. Each
|
||||
CPU must have a physical ID that is unique in a node. In ovni there is also a
|
||||
virtual CPU, which simply is used to collect threads that are not tied to an
|
||||
specific physical CPU, so it cannot be easily determined where they are running.
|
||||
|
||||
### Node
|
||||
|
||||
A *node* refers to a compute node, often a physical machine with memory and
|
||||
network which may contain one or more
|
||||
[sockets](https://en.wikipedia.org/wiki/CPU_socket), where each socket has one
|
||||
or more CPUs.
|
||||
|
||||
### System
|
||||
|
||||
A system represents the complete set of hardware parts and software parts that
|
||||
are known to ovni in a given trace.
|
||||
@ -1,516 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!-- Created with Inkscape (http://www.inkscape.org/) -->
|
||||
|
||||
<svg
|
||||
width="306.91663mm"
|
||||
height="127.00001mm"
|
||||
viewBox="0 0 306.91663 127.00001"
|
||||
version="1.1"
|
||||
id="svg1"
|
||||
inkscape:version="1.3.2 (091e20ef0f, 2023-11-25, custom)"
|
||||
sodipodi:docname="part-model.svg"
|
||||
xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
|
||||
xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
|
||||
xmlns="http://www.w3.org/2000/svg"
|
||||
xmlns:svg="http://www.w3.org/2000/svg">
|
||||
<sodipodi:namedview
|
||||
id="namedview1"
|
||||
pagecolor="#ffffff"
|
||||
bordercolor="#999999"
|
||||
borderopacity="1"
|
||||
inkscape:showpageshadow="0"
|
||||
inkscape:pageopacity="0"
|
||||
inkscape:pagecheckerboard="0"
|
||||
inkscape:deskcolor="#d1d1d1"
|
||||
inkscape:document-units="mm"
|
||||
showgrid="false"
|
||||
inkscape:zoom="0.73049944"
|
||||
inkscape:cx="629.70616"
|
||||
inkscape:cy="280.62992"
|
||||
inkscape:window-width="1920"
|
||||
inkscape:window-height="1031"
|
||||
inkscape:window-x="0"
|
||||
inkscape:window-y="24"
|
||||
inkscape:window-maximized="1"
|
||||
inkscape:current-layer="layer1">
|
||||
<inkscape:grid
|
||||
id="grid1"
|
||||
units="px"
|
||||
originx="-74.083327"
|
||||
originy="-89.958345"
|
||||
spacingx="0.26458333"
|
||||
spacingy="0.26458334"
|
||||
empcolor="#7a7aff"
|
||||
empopacity="0.25098039"
|
||||
color="#6a6aff"
|
||||
opacity="0.1254902"
|
||||
empspacing="5"
|
||||
dotted="false"
|
||||
gridanglex="30"
|
||||
gridanglez="30"
|
||||
visible="false" />
|
||||
</sodipodi:namedview>
|
||||
<defs
|
||||
id="defs1" />
|
||||
<g
|
||||
inkscape:label="Layer 1"
|
||||
inkscape:groupmode="layer"
|
||||
id="layer1"
|
||||
transform="translate(-74.083328,-89.958344)">
|
||||
<rect
|
||||
style="fill:none;stroke:none;stroke-width:0.264999;stroke-linecap:square;stroke-dasharray:none;stroke-dashoffset:0"
|
||||
id="rect33"
|
||||
width="306.91663"
|
||||
height="127.00001"
|
||||
x="74.083328"
|
||||
y="89.958344" />
|
||||
<rect
|
||||
style="fill:#ffeeaa;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none;stroke-dashoffset:0"
|
||||
id="rect32"
|
||||
width="121.70832"
|
||||
height="84.666679"
|
||||
x="253.99998"
|
||||
y="127.00001" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:6.35px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="290.19363"
|
||||
y="202.25124"
|
||||
id="text32"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan32"
|
||||
style="font-size:6.35px;stroke-width:0.264583"
|
||||
x="290.19363"
|
||||
y="202.25124">Hardware parts</tspan></text>
|
||||
<rect
|
||||
style="fill:#eeffaa;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none;stroke-dashoffset:0"
|
||||
id="rect31"
|
||||
width="169.33333"
|
||||
height="84.666679"
|
||||
x="79.374992"
|
||||
y="127.00001" />
|
||||
<rect
|
||||
style="fill:#fff6d5;stroke:#000000;stroke-width:0.3;stroke-linecap:square;stroke-dasharray:none;stroke-dashoffset:0"
|
||||
id="rect27"
|
||||
width="47.625004"
|
||||
height="21.166676"
|
||||
x="269.87497"
|
||||
y="148.16667"
|
||||
ry="2.645834" />
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect1"
|
||||
width="21.166662"
|
||||
height="10.583329"
|
||||
x="84.566666"
|
||||
y="174.52502"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="87.947342"
|
||||
y="181.39488"
|
||||
id="text1"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan1"
|
||||
style="stroke-width:0.264583"
|
||||
x="87.947342"
|
||||
y="181.39488">Thread</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect3"
|
||||
width="21.166664"
|
||||
height="10.583337"
|
||||
x="111.12499"
|
||||
y="153.45834"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="113.57446"
|
||||
y="160.26309"
|
||||
id="text3"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan3"
|
||||
style="stroke-width:0.264583"
|
||||
x="113.57446"
|
||||
y="160.26309">Process</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect4"
|
||||
width="21.166664"
|
||||
height="10.583333"
|
||||
x="111.12499"
|
||||
y="174.62502"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="114.50567"
|
||||
y="181.49487"
|
||||
id="text4"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan4"
|
||||
style="stroke-width:0.264583"
|
||||
x="114.50567"
|
||||
y="181.49487">Thread</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect5"
|
||||
width="21.166658"
|
||||
height="10.583333"
|
||||
x="137.58333"
|
||||
y="174.62502"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="140.964"
|
||||
y="181.49487"
|
||||
id="text5"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan5"
|
||||
style="stroke-width:0.264583"
|
||||
x="140.964"
|
||||
y="181.49487">Thread</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect6"
|
||||
width="21.166672"
|
||||
height="10.583333"
|
||||
x="169.33331"
|
||||
y="174.62502"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="172.71399"
|
||||
y="181.49487"
|
||||
id="text6"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan6"
|
||||
style="stroke-width:0.264583"
|
||||
x="172.71399"
|
||||
y="181.49487">Thread</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect7"
|
||||
width="20.966642"
|
||||
height="10.38336"
|
||||
x="195.99167"
|
||||
y="153.55833"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="198.24112"
|
||||
y="160.16312"
|
||||
id="text7"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan7"
|
||||
style="stroke-width:0.264583"
|
||||
x="198.24112"
|
||||
y="160.16312">Process</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect8"
|
||||
width="21.16667"
|
||||
height="10.583333"
|
||||
x="195.79164"
|
||||
y="174.62502"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="199.17232"
|
||||
y="181.49487"
|
||||
id="text8"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan8"
|
||||
style="stroke-width:0.264583"
|
||||
x="199.17232"
|
||||
y="181.49487">Thread</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect9"
|
||||
width="21.166666"
|
||||
height="10.583333"
|
||||
x="222.24997"
|
||||
y="174.62502"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="225.63065"
|
||||
y="181.49487"
|
||||
id="text9"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan9"
|
||||
style="stroke-width:0.264583"
|
||||
x="225.63065"
|
||||
y="181.49487">Thread</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect10"
|
||||
width="21.166658"
|
||||
height="10.583337"
|
||||
x="153.45833"
|
||||
y="132.29167"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="158.21979"
|
||||
y="139.09644"
|
||||
id="text10"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan10"
|
||||
style="stroke-width:0.264583"
|
||||
x="158.21979"
|
||||
y="139.09644">Loom</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect11"
|
||||
width="21.166651"
|
||||
height="10.58334"
|
||||
x="306.91666"
|
||||
y="132.29167"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="311.88068"
|
||||
y="139.16154"
|
||||
id="text11"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan11"
|
||||
style="stroke-width:0.264583"
|
||||
x="311.88068"
|
||||
y="139.16154">Node</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect12"
|
||||
width="15.875001"
|
||||
height="10.583341"
|
||||
x="275.16666"
|
||||
y="153.45834"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="278.86566"
|
||||
y="160.291"
|
||||
id="text12"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan12"
|
||||
style="stroke-width:0.264583"
|
||||
x="278.86566"
|
||||
y="160.291">CPU</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect13"
|
||||
width="15.874983"
|
||||
height="10.583341"
|
||||
x="296.33334"
|
||||
y="153.45834"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="300.03235"
|
||||
y="160.291"
|
||||
id="text13"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan13"
|
||||
style="stroke-width:0.264583"
|
||||
x="300.03235"
|
||||
y="160.291">CPU</tspan></text>
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 121.70832,164.04168 0,10.58334"
|
||||
id="path15"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect3"
|
||||
inkscape:connection-end="#rect4" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 206.45046,163.94169 -0.0505,10.68333"
|
||||
id="path16"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect7"
|
||||
inkscape:connection-end="#rect8" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 212.94006,163.94169 13.30366,10.68333"
|
||||
id="path17"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-end="#rect9"
|
||||
inkscape:connection-start="#rect7" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 199.96086,163.94169 -13.40463,10.68333"
|
||||
id="path18"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect7"
|
||||
inkscape:connection-end="#rect6" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 128.32291,164.04168 13.22917,10.58334"
|
||||
id="path19"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect3"
|
||||
inkscape:connection-end="#rect5" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 115.03723,164.04168 -13.21614,10.48334"
|
||||
id="path20"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect3"
|
||||
inkscape:connection-end="#rect1" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 153.45833,142.87501 -21.16667,10.58333"
|
||||
id="path21"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect10"
|
||||
inkscape:connection-end="#rect3" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 174.62499,142.86254 21.44212,10.69579"
|
||||
id="path22"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect10"
|
||||
inkscape:connection-end="#rect7" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 314.19269,142.87501 -6.61457,10.58333"
|
||||
id="path24"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect11"
|
||||
inkscape:connection-end="#rect13" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="M 308.90102,142.87501 291.04166,153.8654"
|
||||
id="path25"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect11"
|
||||
inkscape:connection-end="#rect12" />
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect25"
|
||||
width="15.875013"
|
||||
height="10.583337"
|
||||
x="322.79163"
|
||||
y="153.45834"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="326.49063"
|
||||
y="160.291"
|
||||
id="text25"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan25"
|
||||
style="stroke-width:0.264583"
|
||||
x="326.49063"
|
||||
y="160.291">CPU</tspan></text>
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect26"
|
||||
width="15.874991"
|
||||
height="10.583337"
|
||||
x="343.95831"
|
||||
y="153.45834"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="347.65732"
|
||||
y="160.291"
|
||||
id="text26"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan26"
|
||||
style="stroke-width:0.264583"
|
||||
x="347.65732"
|
||||
y="160.291">CPU</tspan></text>
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 320.80727,142.87501 6.61457,10.58333"
|
||||
id="path26"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect11"
|
||||
inkscape:connection-end="#rect25" />
|
||||
<path
|
||||
style="display:inline;fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 326.09894,142.87501 17.85937,10.99039"
|
||||
id="path27"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect11"
|
||||
inkscape:connection-end="#rect26" />
|
||||
<path
|
||||
style="display:inline;fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.265;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
|
||||
d="m 174.62499,139.70001 95.24998,19.05"
|
||||
id="path28"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect10" />
|
||||
<rect
|
||||
style="fill:#ffffff;stroke:#000000;stroke-width:0.2;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect29"
|
||||
width="21.166666"
|
||||
height="10.583335"
|
||||
x="216.95831"
|
||||
y="95.250008"
|
||||
ry="0" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="219.6889"
|
||||
y="101.67236"
|
||||
id="text29"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan29"
|
||||
style="stroke-width:0.264583"
|
||||
x="219.6889"
|
||||
y="101.67236">System</tspan></text>
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 238.12498,104.89952 68.79168,28.32598"
|
||||
id="path29"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect29"
|
||||
inkscape:connection-end="#rect11" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.264583px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
|
||||
d="m 218.47022,105.83334 -45.35713,26.45833"
|
||||
id="path30"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect29"
|
||||
inkscape:connection-end="#rect10" />
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:6.35px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;stroke-width:0.264583"
|
||||
x="140.81671"
|
||||
y="202.25124"
|
||||
id="text31"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan31"
|
||||
style="font-size:6.35px;stroke-width:0.264583"
|
||||
x="140.81671"
|
||||
y="202.25124">Software parts</tspan></text>
|
||||
</g>
|
||||
</svg>
|
||||
|
Before Width: | Height: | Size: 18 KiB |
@ -1,123 +0,0 @@
|
||||
# Trace concepts
|
||||
|
||||
When using libovni to generate traces or the emulator to process them, there are
|
||||
several concepts to keep in mind.
|
||||
|
||||
## Trace elements
|
||||
|
||||
The information generated by a program or later processed by other ovni tools is
|
||||
known as a trace. A runtime trace stores the information as-is in disk from a
|
||||
program execution. While a emulation trace is generated from the runtime trace
|
||||
for visualization with Paraver.
|
||||
|
||||
Both runtime and emulation traces are always stored inside the same directory,
|
||||
by default `ovni/`, which is known as the *trace directory*.
|
||||
|
||||
Here are the components of a runtime trace, as generated by libovni:
|
||||
|
||||
<p align="center">
|
||||
<img alt="Trace concepts" src="../trace.svg">
|
||||
</p>
|
||||
|
||||
### Stream
|
||||
|
||||
A stream is a directory which contains a binary stream and the associated stream
|
||||
metadata file. Each stream is associated with a given part of a system. As of
|
||||
now, libovni can only generate streams associated to [threads](part-model.md#thread).
|
||||
|
||||
### Stream metadata
|
||||
|
||||
The stream metadata is a JSON file named `stream.json` which holds information
|
||||
about the stream itself.
|
||||
|
||||
### Binary stream
|
||||
|
||||
A binary stream is a file named `stream.obs` (.obs stands for Ovni Binary
|
||||
Stream) composed of a header and a concatenated array of events without padding.
|
||||
Notice that each event may have different length.
|
||||
|
||||
### Event
|
||||
|
||||
An event is a point in time that has some information associated. Events written
|
||||
at runtime by libovni have at MCV, a clock and a optional payload. The list of
|
||||
all events recognized by the emulator can be found [here](../emulation/events.md).
|
||||
|
||||
Events can be displayed by ovnidump, which shows an explanation of what the
|
||||
event means:
|
||||
|
||||
```txt
|
||||
$ ovnidump ovni/loom.hop.nosv-u1000/proc.1121064 | grep -A 10 VTx | head
|
||||
517267929632815 VTx thread.1121064 executes the task 1 with bodyid 0
|
||||
517267930261672 VYc thread.1121064 creates task type 2 with label "task"
|
||||
517267930875858 VTC thread.1121064 creates parallel task 2 with type 2
|
||||
517267930877789 VU[ thread.1121064 starts submitting a task
|
||||
517267930877990 VU] thread.1121064 stops submitting a task
|
||||
517267930878098 VTC thread.1121064 creates parallel task 3 with type 2
|
||||
517267930878196 VU[ thread.1121064 starts submitting a task
|
||||
517267930878349 VU] thread.1121064 stops submitting a task
|
||||
517267930878432 VTC thread.1121064 creates parallel task 4 with type 2
|
||||
517267930878494 VU[ thread.1121064 starts submitting a task
|
||||
```
|
||||
|
||||
There are two types or events: normal and jumbo events, the latter can hold
|
||||
large attached payloads.
|
||||
|
||||
### MCV
|
||||
|
||||
The MCV acronym is the abbreviation of Model-Class-Value, which are a three
|
||||
characters that identify any event. The MCV is shown in the ovnitop and ovnidump
|
||||
tools and allows easy filtering with grep, for a single or related events:
|
||||
|
||||
```
|
||||
$ ovnitop ovni | grep VT
|
||||
VTe 20002
|
||||
VTx 20002
|
||||
VTC 200
|
||||
VTc 2
|
||||
VTp 1
|
||||
VTr 1
|
||||
```
|
||||
|
||||
### Clock
|
||||
|
||||
A clock is a 64 bit counter, which counts the number of nanoseconds from an
|
||||
arbitrary point in time in the past. Each event has the value of the clock
|
||||
stored inside, to indicate when that event happened. In a given trace there can
|
||||
be multiple clocks which don't refer to the same point in the past and must be
|
||||
corrected so they all produce an ordered sequence of events. The ovnisync
|
||||
program performs this correction by measuring the difference across clocks of
|
||||
different nodes.
|
||||
|
||||
### Payload
|
||||
|
||||
Events may have associated additional information which is stored in the stream.
|
||||
Normal events can hold up to 16 bytes, otherwise the jumbo events must be used
|
||||
to hold additional payload.
|
||||
|
||||
## Other related concepts
|
||||
|
||||
Apart from the trace itself, there are other concepts to keep in mind when the
|
||||
trace is being processed by the emulator.
|
||||
|
||||
### Event model
|
||||
|
||||
Each event belongs to an event model, as identified by the model character in
|
||||
the MCV. An event model is composed of several components:
|
||||
|
||||
- A set of [events](#event) all with the same model identifier in the
|
||||
[MCV](#mcv)
|
||||
- The emulator code that processes those events.
|
||||
- A human readable name, like `ovni` or `nanos6`.
|
||||
- A semantic version.
|
||||
|
||||
### State
|
||||
|
||||
A state is a discrete value that can change over time based on the events the
|
||||
emulator receives. Usually a single event causes a single state change, which is
|
||||
then written to the Paraver traces. An example is the thread state, which can
|
||||
change over time based on the events `OH*` that indicate a state transition
|
||||
of the current thread.
|
||||
|
||||
In contrast with an event, states have a duration associated which can usually
|
||||
be observed in Paraver. Notice that the trace only contains events, the states
|
||||
are computed at emulation.
|
||||
@ -1,474 +0,0 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!-- Created with Inkscape (http://www.inkscape.org/) -->
|
||||
|
||||
<svg
|
||||
width="116.41666mm"
|
||||
height="105.83334mm"
|
||||
viewBox="0 0 116.41666 105.83334"
|
||||
version="1.1"
|
||||
id="svg1"
|
||||
inkscape:version="1.3.2 (091e20ef0f, 2023-11-25, custom)"
|
||||
sodipodi:docname="trace.svg"
|
||||
xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
|
||||
xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
|
||||
xmlns="http://www.w3.org/2000/svg"
|
||||
xmlns:svg="http://www.w3.org/2000/svg">
|
||||
<sodipodi:namedview
|
||||
id="namedview1"
|
||||
pagecolor="#ffffff"
|
||||
bordercolor="#999999"
|
||||
borderopacity="1"
|
||||
inkscape:showpageshadow="0"
|
||||
inkscape:pageopacity="0"
|
||||
inkscape:pagecheckerboard="0"
|
||||
inkscape:deskcolor="#d1d1d1"
|
||||
inkscape:document-units="mm"
|
||||
showgrid="true"
|
||||
inkscape:zoom="1.4609989"
|
||||
inkscape:cx="248.80238"
|
||||
inkscape:cy="199.17879"
|
||||
inkscape:window-width="1920"
|
||||
inkscape:window-height="1031"
|
||||
inkscape:window-x="0"
|
||||
inkscape:window-y="24"
|
||||
inkscape:window-maximized="1"
|
||||
inkscape:current-layer="layer1">
|
||||
<inkscape:grid
|
||||
id="grid1"
|
||||
units="px"
|
||||
originx="-39.687498"
|
||||
originy="-15.875"
|
||||
spacingx="0.26458333"
|
||||
spacingy="0.26458334"
|
||||
empcolor="#7a7aff"
|
||||
empopacity="0.25098039"
|
||||
color="#6a6aff"
|
||||
opacity="0.1254902"
|
||||
empspacing="5"
|
||||
dotted="false"
|
||||
gridanglex="30"
|
||||
gridanglez="30"
|
||||
visible="true" />
|
||||
</sodipodi:namedview>
|
||||
<defs
|
||||
id="defs1">
|
||||
<rect
|
||||
x="45"
|
||||
y="370"
|
||||
width="209.99998"
|
||||
height="35"
|
||||
id="rect15" />
|
||||
</defs>
|
||||
<g
|
||||
inkscape:label="Layer 1"
|
||||
inkscape:groupmode="layer"
|
||||
id="layer1"
|
||||
transform="translate(-39.687498,-15.875)">
|
||||
<g
|
||||
id="g59"
|
||||
transform="translate(5.5781353,-0.74017783)"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="100.23113"
|
||||
y="24.896034"
|
||||
id="text22"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan22"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="100.23113"
|
||||
y="24.896034">Trace</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect32"
|
||||
width="15.875"
|
||||
height="7.9375005"
|
||||
x="92.281235"
|
||||
y="19.4142" />
|
||||
</g>
|
||||
<g
|
||||
id="g57"
|
||||
transform="translate(-0.84260657,-0.98969722)"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="106.39689"
|
||||
y="46.186943"
|
||||
id="text24"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan24"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="106.39689"
|
||||
y="46.186943">Stream</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect33"
|
||||
width="21.166666"
|
||||
height="7.9375019"
|
||||
x="96.092606"
|
||||
y="40.6772" />
|
||||
</g>
|
||||
<g
|
||||
id="g56"
|
||||
transform="translate(0.32292488,-0.89336269)"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="78.773026"
|
||||
y="46.090603"
|
||||
id="text23"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan23"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="78.773026"
|
||||
y="46.090603">Stream</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect34"
|
||||
width="21.166666"
|
||||
height="7.9375"
|
||||
x="68.468742"
|
||||
y="40.580864" />
|
||||
</g>
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="M 100.80665,26.611522 84.365216,39.687501"
|
||||
id="path35"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect32"
|
||||
inkscape:connection-end="#rect34" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="m 105.80376,26.611522 0.0227,13.075981"
|
||||
id="path36"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect32"
|
||||
inkscape:connection-end="#rect33" />
|
||||
<g
|
||||
id="g54"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none"
|
||||
transform="translate(-0.99999828,-3.5391978)">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="58.792854"
|
||||
y="72.586143"
|
||||
id="text25"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan25"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="58.792854"
|
||||
y="72.586143">Metadata</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect36"
|
||||
width="26.458336"
|
||||
height="7.9375"
|
||||
x="45.979164"
|
||||
y="67.0392" />
|
||||
</g>
|
||||
<g
|
||||
id="g55"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none"
|
||||
transform="translate(-0.99999828,-3.5391978)">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="97.157433"
|
||||
y="72.175835"
|
||||
id="text26"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan26"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="97.157433"
|
||||
y="72.175835">Binary stream</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect37"
|
||||
width="34.395832"
|
||||
height="7.9375"
|
||||
x="80.374992"
|
||||
y="67.0392" />
|
||||
</g>
|
||||
<rect
|
||||
style="stroke-width:0.15875;stroke-dasharray:none;fill:none;stroke:none;stroke-linecap:square"
|
||||
id="rect60"
|
||||
width="116.41666"
|
||||
height="105.83334"
|
||||
x="40.687496"
|
||||
y="19.414198"
|
||||
inkscape:label="background"
|
||||
transform="translate(-0.99999735,-3.5391979)" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="M 75.847223,47.625001 61.736111,63.500002"
|
||||
id="path37"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect34"
|
||||
inkscape:connection-end="#rect36" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="M 82.241318,47.625001 93.706592,63.500002"
|
||||
id="path38"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect34"
|
||||
inkscape:connection-end="#rect37" />
|
||||
<g
|
||||
id="g53"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none"
|
||||
transform="translate(-8.2507438,-3.0742007)">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="62.074863"
|
||||
y="95.933655"
|
||||
id="text27"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan27"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="62.074863"
|
||||
y="95.933655">Header</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect38"
|
||||
width="23.812506"
|
||||
height="7.9375014"
|
||||
x="50.584076"
|
||||
y="90.386703" />
|
||||
</g>
|
||||
<g
|
||||
id="g52"
|
||||
transform="translate(-8.2507438,-3.3066989)"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="91.411552"
|
||||
y="96.101036"
|
||||
id="text28"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan28"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="91.411552"
|
||||
y="96.101036">Event</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect39"
|
||||
width="23.812506"
|
||||
height="7.9375014"
|
||||
x="79.920769"
|
||||
y="90.619202" />
|
||||
</g>
|
||||
<g
|
||||
id="g51"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none"
|
||||
transform="translate(-8.2507438,-3.0742007)">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="120.28321"
|
||||
y="95.868538"
|
||||
id="text29"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan29"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="120.28321"
|
||||
y="95.868538">Event</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect40"
|
||||
width="23.812506"
|
||||
height="7.9375014"
|
||||
x="108.79243"
|
||||
y="90.386703" />
|
||||
</g>
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="M 89.517356,71.437502 61.29514,87.312503"
|
||||
id="path40"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect37"
|
||||
inkscape:connection-end="#rect38" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="M 94.406805,71.437502 85.742383,87.312503"
|
||||
id="path41"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect37"
|
||||
inkscape:connection-end="#rect39" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="M 99.218748,71.437502 109.8021,87.312503"
|
||||
id="path42"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect37"
|
||||
inkscape:connection-end="#rect40" />
|
||||
<g
|
||||
id="g46"
|
||||
transform="translate(-68.659367,2.7781237)"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="123.93869"
|
||||
y="113.98891"
|
||||
id="text30"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan30"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="123.93869"
|
||||
y="113.98891">MCV</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect42"
|
||||
width="15.875001"
|
||||
height="7.9375038"
|
||||
x="116.41666"
|
||||
y="108.47917" />
|
||||
</g>
|
||||
<g
|
||||
id="g45"
|
||||
transform="translate(-68.659367,5.4239515)"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="147.92894"
|
||||
y="111.38029"
|
||||
id="text31"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan31"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="147.92894"
|
||||
y="111.38029">Clock</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect43"
|
||||
width="15.875001"
|
||||
height="7.9375038"
|
||||
x="140.22916"
|
||||
y="105.83334" />
|
||||
</g>
|
||||
<g
|
||||
id="g44"
|
||||
transform="translate(-66.112857,13.610614)"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<g
|
||||
id="g60"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="172.85362"
|
||||
y="102.65102"
|
||||
id="text32"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan32"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="172.85362"
|
||||
y="102.65102">Payload</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect44"
|
||||
width="23.812506"
|
||||
height="7.9375014"
|
||||
x="161.36285"
|
||||
y="97.514389" />
|
||||
</g>
|
||||
</g>
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="M 83.366344,95.250004 80.27399,111.2573"
|
||||
id="path47"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-end="#g45" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="M 80.082847,95.250004 60.540101,111.2573"
|
||||
id="path48"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-end="#g46" />
|
||||
<g
|
||||
id="g58"
|
||||
transform="translate(-1.9073076,-1.4153422)"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="132.47266"
|
||||
y="46.496338"
|
||||
id="text49"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan49"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="132.47266"
|
||||
y="46.496338">...</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect49"
|
||||
width="18.619415"
|
||||
height="7.9374995"
|
||||
x="123.61564"
|
||||
y="41.102844" />
|
||||
</g>
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="m 110.56031,26.611522 15.69429,13.07598"
|
||||
id="path49"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-end="#rect49"
|
||||
inkscape:connection-start="#rect32" />
|
||||
<g
|
||||
id="g50"
|
||||
transform="translate(-8.2507438,-2.9293636)"
|
||||
style="stroke-width:0.15875;stroke-dasharray:none">
|
||||
<text
|
||||
xml:space="preserve"
|
||||
style="font-size:4.23333px;line-height:1.25;font-family:sans-serif;text-align:center;letter-spacing:0px;word-spacing:0px;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="149.35014"
|
||||
y="95.635361"
|
||||
id="text50"><tspan
|
||||
sodipodi:role="line"
|
||||
id="tspan50"
|
||||
style="text-align:center;text-anchor:middle;stroke-width:0.15875;stroke-dasharray:none"
|
||||
x="149.35014"
|
||||
y="95.635361">...</tspan></text>
|
||||
<rect
|
||||
style="fill:none;stroke:#000000;stroke-width:0.15875;stroke-linecap:square;stroke-dasharray:none"
|
||||
id="rect40-5"
|
||||
width="23.812506"
|
||||
height="7.9375014"
|
||||
x="137.89658"
|
||||
y="90.241867" />
|
||||
</g>
|
||||
<path
|
||||
style="display:inline;fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="m 104.06944,71.437502 29.98612,15.875001"
|
||||
id="path50"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#rect37"
|
||||
inkscape:connection-end="#g50" />
|
||||
<path
|
||||
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.15875;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1"
|
||||
d="M 87.506274,95.250004 103.22625,111.125"
|
||||
id="path60"
|
||||
inkscape:connector-type="polyline"
|
||||
inkscape:connector-curvature="0"
|
||||
inkscape:connection-start="#g52"
|
||||
inkscape:connection-end="#g44" />
|
||||
</g>
|
||||
</svg>
|
||||
|
Before Width: | Height: | Size: 19 KiB |
@ -47,7 +47,7 @@ the following elements:
|
||||
|
||||
- A single byte model identification (for example `O`).
|
||||
- A set of runtime events with that model identification (see the [list
|
||||
of events](events.md)).
|
||||
of events](events)).
|
||||
- Rules that determine which sequences of events are valid.
|
||||
- The emulation hooks that process each event and modify the state of
|
||||
the emulator.
|
||||
|
||||
@ -60,7 +60,7 @@ For more details, see [this MR][1].
|
||||
|
||||
The subsystem view provides a simplified view on what is the nOS-V
|
||||
runtime doing over time. The view follows the same rules described in
|
||||
the [subsystem view of Nanos6](nanos6.md/#subsystem_view).
|
||||
the [subsystem view of Nanos6](../nanos6/#subsystem_view).
|
||||
|
||||
|
||||
## Idle view
|
||||
|
||||
@ -60,4 +60,4 @@ will set all the channels to an error state.
|
||||
The emulator automatically switches the channels from one thread to
|
||||
another when a thread is switched from the CPU. So the different models
|
||||
don't need to worry about thread transitions. See the
|
||||
[channels](../../dev/channels.md) section for more information.
|
||||
[channels](../channels) section for more information.
|
||||
|
||||
@ -1,56 +0,0 @@
|
||||
# Environment variables
|
||||
|
||||
Some environment variables can be used to adjust settings during the execution
|
||||
of libovni, they all begin with the `OVNI_` prefix. Be sure that all threads of
|
||||
the same node use the same environment variables.
|
||||
|
||||
## OVNI_TMPDIR
|
||||
|
||||
During the execution of your program, a per-thread buffer is kept where the new
|
||||
events are being recorded. When this buffer is full, it is written to disk and
|
||||
emptied, an operation known as flush. This may take a while depending on the
|
||||
underliying filesystem.
|
||||
|
||||
Keep in mind that the thread will be blocked until the flush ends, so if your
|
||||
filesystem is slow it would interrupt the execution of your program for a long
|
||||
time. It is advisable to use the fastest filesystem available (see the tmpfs(5)
|
||||
and df(1) manual pages).
|
||||
|
||||
You can select a temporary trace directory where the buffers will be flushed
|
||||
during the execution by setting the environment variable `OVNI_TMPDIR`. The last
|
||||
directory will be created if doesn't exist. In that case, as soon as a process
|
||||
calls `ovni_proc_fini()`, the traces of all its threads will be moved to the
|
||||
final directory at `$PWD/ovni`. Example:
|
||||
|
||||
OVNI_TMPDIR=$(mktemp -u /dev/shm/ovni.XXXXXX) srun ./your-app
|
||||
|
||||
To test the different filesystem speeds, you can use hyperfine and dd. Take a
|
||||
closer look at the max time:
|
||||
|
||||
```
|
||||
$ hyperfine 'dd if=/dev/zero of=/gpfs/projects/bsc15/bsc15557/kk bs=2M count=10'
|
||||
Benchmark 1: dd if=/dev/zero of=/gpfs/projects/bsc15/bsc15557/kk bs=2M count=10
|
||||
Time (mean ± σ): 71.7 ms ± 130.4 ms [User: 0.8 ms, System: 10.2 ms]
|
||||
Range (min … max): 14.7 ms … 1113.2 ms 162 runs
|
||||
|
||||
Warning: Statistical outliers were detected. Consider re-running this
|
||||
benchmark on a quiet PC without any interferences from other programs. It
|
||||
might help to use the '--warmup' or '--prepare' options.
|
||||
|
||||
$ hyperfine 'dd if=/dev/zero of=/tmp/kk bs=2M count=10'
|
||||
Benchmark 1: dd if=/dev/zero of=/tmp/kk bs=2M count=10
|
||||
Time (mean ± σ): 56.2 ms ± 5.7 ms [User: 0.6 ms, System: 14.8 ms]
|
||||
Range (min … max): 45.8 ms … 77.8 ms 63 runs
|
||||
|
||||
$ hyperfine 'dd if=/dev/zero of=/dev/shm/kk bs=2M count=10'
|
||||
Benchmark 1: dd if=/dev/zero of=/dev/shm/kk bs=2M count=10
|
||||
Time (mean ± σ): 11.4 ms ± 0.4 ms [User: 0.5 ms, System: 11.1 ms]
|
||||
Range (min … max): 9.7 ms … 12.5 ms 269 runs
|
||||
```
|
||||
|
||||
## OVNI_TRACEDIR
|
||||
|
||||
By default, the runtime trace will be placed in the `ovni` directory, inside the
|
||||
working directory. You can specify a different location to place the trace by
|
||||
setting the `OVNI_TRACEDIR` environment variable. It accepts a relative or
|
||||
absolute path, which will be created if it doesn't exist.
|
||||
Binary file not shown.
|
Before Width: | Height: | Size: 6.6 KiB |
@ -1,109 +0,0 @@
|
||||
# Introduction
|
||||
|
||||
To use *libovni* to instrument a program, follow the next instructions
|
||||
carefully, or you may end up with an incomplete trace that is rejected at
|
||||
emulation.
|
||||
|
||||
You can also generate a valid trace from your own software or hardware
|
||||
directly, but be sure to follow the [trace specification](trace_spec.md).
|
||||
|
||||
## Initialization
|
||||
|
||||
To initialize libovni follow these steps in all threads:
|
||||
|
||||
1. **Check the version**. Call `ovni_version_check()` once before calling any
|
||||
ovni function. It can be called multiple times from any thread, but only one
|
||||
is required.
|
||||
|
||||
2. **Init the process**. Call `ovni_proc_init()` to initialize the process. It
|
||||
can only be called **once per process** and it must be called before the
|
||||
thread is initialized.
|
||||
|
||||
3. **Init the thread**. Call `ovni_thread_init()` to initialize the thread.
|
||||
Multiple attempts to initialize the same thread are ignored with a warning.
|
||||
|
||||
The `ovni_proc_init()` arguments are as follows:
|
||||
|
||||
```c
|
||||
void ovni_proc_init(int app, const char *loom, int pid);
|
||||
```
|
||||
|
||||
The `app` defines the "appid" of the program, which must be a number >0. This is
|
||||
useful to run multiple processes some of which run the same "app", so you can
|
||||
tell which one is which. The `loom` argument defines the
|
||||
[loom](../concepts/part-model.md#loom) name and maps the process to that
|
||||
loom. It must be compose of the host name, a dot and a suffix. The PID is the
|
||||
one obtained by `getpid(2)`.
|
||||
|
||||
The `ovni_thread_init()` function only accepts one argument, the TID as returned
|
||||
by `gettid(2)`.
|
||||
|
||||
## Setup metadata
|
||||
|
||||
Once the process and thread are initialized, you can begin adding metadata to
|
||||
the thread stream.
|
||||
|
||||
1. **Require models**. Call `ovni_thread_require()` with the required model
|
||||
version before emitting events for a given model. Only required once from a
|
||||
thread in a given trace.
|
||||
|
||||
2. **Emit loom CPUs**. Call `ovni_add_cpu()` to register each CPU in the loom. It can
|
||||
be done from a single thread or multiple threads, in the latter the list of
|
||||
CPUs is merged.
|
||||
|
||||
3. **Set the rank**. If you use MPI, call `ovni_proc_set_rank()` to register the
|
||||
rank and number of ranks of the current execution. Only once per process.
|
||||
|
||||
## Start the execution
|
||||
|
||||
The current thread must switch to the "Running" state before any event can be
|
||||
processed by the emulator. Do so by emitting a [`OHx`
|
||||
event](../emulation/events.md#OHx) in the stream with the appropriate payload:
|
||||
|
||||
```c
|
||||
static void thread_execute(int32_t cpu, int32_t ctid, uint64_t tag)
|
||||
{
|
||||
struct ovni_ev ev = {0};
|
||||
ovni_ev_set_clock(&ev, ovni_clock_now());
|
||||
ovni_ev_set_mcv(&ev, "OHx");
|
||||
ovni_payload_add(&ev, (uint8_t *) &cpu, sizeof(cpu));
|
||||
ovni_payload_add(&ev, (uint8_t *) &ctid, sizeof(ctid));
|
||||
ovni_payload_add(&ev, (uint8_t *) &tag, sizeof(tag));
|
||||
ovni_ev_emit(&ev);
|
||||
}
|
||||
```
|
||||
|
||||
The `cpu` is the logical index (not the physical ID) of the loom CPU at which
|
||||
this thread will begin the execution. Use -1 if it is not known. The `ctid` and
|
||||
`tag` allow you to track the exact point at which a given thread was created and
|
||||
by which thread but they are not relevant for the first thread, so they can be
|
||||
set to -1.
|
||||
|
||||
## Emit events
|
||||
|
||||
After this point you can emit any other event from this thread. Use the
|
||||
`ovni_ev_*` set of functions to create and emit events. Notice that all events
|
||||
are refer to the current thread that emits them.
|
||||
|
||||
If you need to store metadata information, use the `ovni_attr_*` set of
|
||||
functions. The metadata is stored in disk by `ovni_attr_fluch()` and when the
|
||||
thread is freed by `ovni_thread_free()`.
|
||||
|
||||
Attempting to emit events or writing metadata without having a thread
|
||||
initialized will cause your program to abort.
|
||||
|
||||
## Finishing the execution
|
||||
|
||||
To finalize the execution **every thread** must perform the following steps,
|
||||
otherwise the trace **will be rejected**.
|
||||
|
||||
1. **End the current thread**. Emit a [`OHe` event](../emulation/events.md#OHe) to inform the current thread ends.
|
||||
2. **Flush the buffer**. Call `ovni_flush()` to be sure all events are written
|
||||
to disk.
|
||||
3. **Free the thread**. Call `ovni_thread_free()` to complete the stream and
|
||||
free the memory used by the buffer.
|
||||
4. **Finish the process**. If this is the last thread, call `ovni_proc_fini()`
|
||||
to set the process state to finished.
|
||||
|
||||
If a thread fails to perform these steps, the complete trace will be rejected by
|
||||
the emulator as it cannot guarantee the trace to be consistent.
|
||||
@ -1,4 +1,4 @@
|
||||
# Mark events
|
||||
# Mark API
|
||||
|
||||
The mark API allows you to add arbitrary events in a trace to mark regions of
|
||||
interest while debugging or developing a new program or library. The events are
|
||||
@ -80,68 +80,6 @@ void ovni_mark_pop(int32_t type, int64_t value);
|
||||
|
||||
The value in the pop call must match the previous pushed value.
|
||||
|
||||
<details>
|
||||
<summary>Example OmpSs-2 program</summary>
|
||||
<br>
|
||||
<div style="padding-left: 1em; border-left: 3px solid #ddd">
|
||||
<p>
|
||||
Here is a dummy program showing how to use the mark API with an OmpSs-2 program.
|
||||
Notice that there is no initialization of the current thread or process, as it
|
||||
already occurs inside the OmpSs-2 runtime before reaching the main.
|
||||
|
||||
```c
|
||||
/* Build with:
|
||||
* $ clang -fompss-2 -lovni dummy.c -o dummy
|
||||
* Enable instrumentation in nanos6:
|
||||
* $ echo 'version.instrument = "ovni"' > nanos6.toml
|
||||
* Run:
|
||||
* $ ./dummy
|
||||
* Emulate:
|
||||
* $ ovniemu ovni
|
||||
* View timeline:
|
||||
* $ wxparaver ovni/cpu.prv ovni/cfg/cpu/ovni/mark.cfg
|
||||
*/
|
||||
#include <ovni.h>
|
||||
#include <unistd.h>
|
||||
|
||||
enum { INDEX = 0, RUN = 1 };
|
||||
|
||||
static void process(int run, int i)
|
||||
{
|
||||
ovni_mark_push(RUN, run + 1);
|
||||
ovni_mark_push(INDEX, i + 1);
|
||||
usleep(10000); // Dummy operation for 10 ms
|
||||
ovni_mark_pop(INDEX, i + 1);
|
||||
ovni_mark_pop(RUN, run + 1);
|
||||
}
|
||||
|
||||
int main(void)
|
||||
{
|
||||
ovni_mark_type(INDEX, OVNI_MARK_STACK, "Index");
|
||||
ovni_mark_type(RUN, OVNI_MARK_STACK, "Run");
|
||||
|
||||
for (int run = 0; run < 10; run++) {
|
||||
for (int i = 0; i < 50; i++) {
|
||||
#pragma oss task
|
||||
process(run, i);
|
||||
}
|
||||
}
|
||||
|
||||
#pragma oss taskwait
|
||||
|
||||
return 0;
|
||||
}
|
||||
```
|
||||
|
||||
<!-- Images don't seem to work via markdown -->
|
||||
<p>Here is the resulting timeline loaded in Paraver with the gradient color
|
||||
configuration, showing the first mark type (the index):
|
||||
<img style="margin-top: 1em" alt="" src="../fig/mark.png"></p>
|
||||
|
||||
</div>
|
||||
</details>
|
||||
<p></p>
|
||||
|
||||
## Usage in Paraver
|
||||
|
||||
Each thread holds a channel for each mark type that you have defined. The
|
||||
|
||||
@ -1,149 +1,127 @@
|
||||
# Trace specification v3
|
||||
# Trace specification
|
||||
|
||||
!!! Important
|
||||
|
||||
This document refers to the trace specification for
|
||||
the version 3
|
||||
the version 2
|
||||
|
||||
The ovni instrumentation library libovni stores the information
|
||||
collected in a runtime trace following the specification of this document.
|
||||
|
||||
## Structure
|
||||
|
||||
An ovni runtime trace (or simply, a trace) is composed of one or more
|
||||
[streams](../concepts/trace.md#stream), which are directories containing
|
||||
two mandatory files:
|
||||
|
||||
- `stream.json` the stream metadata in JSON format.
|
||||
- `stream.obs` the binary stream with events.
|
||||
|
||||
Each stream is assigned to a single *part* in the [part
|
||||
model](../concepts/part-model.md), usually assigned to a given thread.
|
||||
|
||||
There are no imposed rules on how to organize the several streams into
|
||||
directories, but libovni uses the following approach for thread streams:
|
||||
The ovni instrumentation library stores the information collected in a
|
||||
trace following the specification of this document.
|
||||
|
||||
The complete trace is stored in a top-level directory named `ovni`.
|
||||
Inside this directory you will find the loom directories. The name of
|
||||
the loom directory is built from the `loom` parameter of `ovni_proc_init()`,
|
||||
prefixing it with `loom.`.
|
||||
Inside this directory you will find the loom directories with the prefix
|
||||
`loom.`. The name of the loom is built from the `loom` parameter of
|
||||
`ovni_proc_init()`, prefixing it with `loom.`.
|
||||
|
||||
Each loom directory contains one directory per process of that loom. The
|
||||
name is composed of the `proc.` prefix and the PID of the process
|
||||
specified in the `pid` argument to `ovni_proc_init()`.
|
||||
|
||||
Inside each process there is one directory for each thread, composed by
|
||||
the `thread.` prefix and the TID, which are the streams. The files
|
||||
`stream.json` and `stream.obs` reside inside. Example:
|
||||
Each process directory contains:
|
||||
|
||||
```
|
||||
ovni/loom.mio.nosv-u1000/proc.89719/thread.89719/stream.json
|
||||
ovni/loom.mio.nosv-u1000/proc.89719/thread.89719/stream.obs
|
||||
```
|
||||
- The process metadata file `metadata.json`.
|
||||
- The thread streams, composed of:
|
||||
- The binary stream like `thread.123.obs`
|
||||
- The thread metadata like `thread.123.json`
|
||||
|
||||
This structure prevents collisions among threads with the same TID among nodes,
|
||||
while allowing dumping events from a single thread, process or loom with
|
||||
ovnidump.
|
||||
## Process metadata
|
||||
|
||||
## Stream metadata
|
||||
!!! Important
|
||||
|
||||
The `stream.json` metadata file contains information about the part that
|
||||
the stream is assigned to. This is generally used to determine the
|
||||
hierarchy of the part model.
|
||||
Process metadata has version 2
|
||||
|
||||
The JSON must be an object (dictionary) with the following mandatory
|
||||
keys:
|
||||
The process metadata file contains important information about the trace
|
||||
that is invariant during the complete execution, and generally is
|
||||
required to be available prior to processing the events in the trace.
|
||||
|
||||
The metadata is stored in the JSON file `metadata.json` inside each
|
||||
process directory and contains the following keys:
|
||||
|
||||
- `version`: a number specifying the version of the metadata format.
|
||||
Must have the value 3 for this version.
|
||||
|
||||
The rest of information is stored for each model.
|
||||
|
||||
In particular, the `ovni` model enforces the use of:
|
||||
|
||||
- `ovni.part`: the type of part this stream is assigned to, usually
|
||||
`thread`.
|
||||
- `ovni.require`: a dictionary of model name and version which will
|
||||
determine which models are enabled at emulation and the required
|
||||
version.
|
||||
- `ovni.finished`: must be 1 to ensure the stream is complete (mandatory
|
||||
in all streams).
|
||||
|
||||
### Thread stream metadata
|
||||
|
||||
For `thread` streams, the following attributes are used.
|
||||
|
||||
- `ovni.tid`: the TID of the thread (mandatory, per-thread).
|
||||
- `ovni.pid`: the PID of the process that the thread belongs to (mandatory, per-thread).
|
||||
- `ovni.app_id`: the application ID of the process (optional, per-process).
|
||||
- `ovni.rank`: the rank of the MPI process (optional, per-process).
|
||||
- `ovni.nranks`: number of total MPI processes (optional, per-process).
|
||||
- `ovni.loom`: the name of the loom that the process belongs to (mandatory, per-process).
|
||||
- `ovni.loom_cpus`: the array of N CPUs available in the loom
|
||||
(mandatory, per-loom). Each element is a dictionary with the keys:
|
||||
- `index`: containing the logical CPU index from 0 to N - 1.
|
||||
Must have the value 2 for this version.
|
||||
- `app_id`: the application ID, used to distinguish between applications
|
||||
running on the same loom.
|
||||
- `rank`: the rank of the MPI process (optional).
|
||||
- `nranks`: number of total MPI processes (optional).
|
||||
- `cpus`: the array of $`N_c`$ CPUs available in the loom. Only one
|
||||
process in the loom must contain this mandatory key. Each element is a
|
||||
dictionary with the keys:
|
||||
- `index`: containing the logical CPU index from 0 to $`N_c - 1`$.
|
||||
- `phyid`: the number of the CPU as given by the operating system
|
||||
(which can exceed N).
|
||||
(which can exceed $`N_c`$).
|
||||
|
||||
Notice that some attributes don't need to be present in all thread
|
||||
streams. For example, per-process requires that at least one thread
|
||||
contains the attribute for each process. Similarly, per-loom requires
|
||||
that at least one thread of the loom emits the attribute.
|
||||
Here is an example of the `metadata.json` file:
|
||||
|
||||
The final attribute value will be computed by merging all the values from the
|
||||
children metadata. Simple values like numbers or strings must match exactly if
|
||||
they appear duplicated, arrays are appended.
|
||||
```
|
||||
{
|
||||
"version": 2,
|
||||
"app_id": 1,
|
||||
"rank": 0,
|
||||
"nranks": 4,
|
||||
"cpus": [
|
||||
{
|
||||
"index": 0,
|
||||
"phyid": 0
|
||||
},
|
||||
{
|
||||
"index": 1,
|
||||
"phyid": 1
|
||||
},
|
||||
{
|
||||
"index": 2,
|
||||
"phyid": 2
|
||||
},
|
||||
{
|
||||
"index": 3,
|
||||
"phyid": 3
|
||||
}
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
Other attributes can be used for other models.
|
||||
## Thread metadata
|
||||
|
||||
Here is an example of the `stream.json` file for a thread of a nOS-V
|
||||
program:
|
||||
!!! Important
|
||||
|
||||
Thread metadata has version 2
|
||||
|
||||
The thread metadata stores constant information per thread, like the
|
||||
process metadata. The information is stored in a dictionary, where the
|
||||
name of the emulation models are used as keys. In particular, the
|
||||
libovni library writes information in the "ovni" key, such as the
|
||||
model requirements, and other information like the version of libovni
|
||||
used. Example:
|
||||
|
||||
```json
|
||||
{
|
||||
"version": 3,
|
||||
"version": 2,
|
||||
"ovni": {
|
||||
"lib": {
|
||||
"version": "1.10.0",
|
||||
"commit": "dirty"
|
||||
"version": "1.4.0",
|
||||
"commit": "unknown"
|
||||
},
|
||||
"part": "thread",
|
||||
"tid": 89719,
|
||||
"pid": 89719,
|
||||
"loom": "mio.nosv-u1000",
|
||||
"app_id": 1,
|
||||
"require": {
|
||||
"ovni": "1.1.0",
|
||||
"nosv": "2.3.0"
|
||||
},
|
||||
"loom_cpus": [
|
||||
{ "index": 0, "phyid": 0 },
|
||||
{ "index": 1, "phyid": 1 },
|
||||
{ "index": 2, "phyid": 2 },
|
||||
{ "index": 3, "phyid": 3 }
|
||||
],
|
||||
"finished": 1
|
||||
},
|
||||
"nosv": {
|
||||
"can_breakdown": false,
|
||||
"lib_version": "2.3.1"
|
||||
"ovni": "1.0.0"
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Binary stream
|
||||
The metadata is written to disk when the thread is first initialized
|
||||
and when the thread finishes.
|
||||
|
||||
## Thread binary streams
|
||||
|
||||
!!! Important
|
||||
|
||||
Binary streams have version 1
|
||||
Thread binary stream has version 1
|
||||
|
||||
A binary stream is a binary file named `stream.obs` that contains a
|
||||
succession of events with monotonically increasing clock values. They
|
||||
have a small header and the variable size events just after the header.
|
||||
Streams are a binary files that contains a succession of events with
|
||||
monotonically increasing clock values. Streams have a small header and
|
||||
the variable size events just after the header.
|
||||
|
||||
The header contains the magic 4 bytes of "ovni" and a version number of
|
||||
4 bytes too. Here is a figure of the data stored in disk on a little
|
||||
endian machine:
|
||||
4 bytes too. Here is a figure of the data stored in disk:
|
||||
|
||||
|
||||
|
||||
@ -167,7 +145,7 @@ payload:
|
||||
- Normal events: with a payload up to 16 bytes
|
||||
- Jumbo events: with a payload up to $`2^{32}`$ bytes
|
||||
|
||||
### Normal events
|
||||
## Normal events
|
||||
|
||||
The normal events are composed of:
|
||||
|
||||
@ -200,7 +178,7 @@ In the following figure you can see each field annotated:
|
||||
|
||||
|
||||
|
||||
### Jumbo events
|
||||
## Jumbo events
|
||||
|
||||
The jumbo events are just like normal events but they can hold large
|
||||
data. The size of the jumbo data is stored as a 32 bits integer as a
|
||||
@ -225,10 +203,10 @@ In the following figure you can see each field annotated:
|
||||
|
||||
|
||||
|
||||
### Design considerations
|
||||
## Design considerations
|
||||
|
||||
The binary stream format has been designed to be very simple, so writing
|
||||
a parser library would take no more than 2 days for a single developer.
|
||||
The stream format has been designed to be very simple, so writing a
|
||||
parser library would take no more than 2 days for a single developer.
|
||||
|
||||
The size of the events has been designed to be small, with 12 bytes per
|
||||
event when no payload is used.
|
||||
@ -261,7 +239,11 @@ raw stream in binary, as the MCV codes can be read as ASCII characters:
|
||||
This allows a human to detect signs of corruption by visually inspecting
|
||||
the streams.
|
||||
|
||||
### Limitations
|
||||
## Limitations
|
||||
|
||||
The streams are designed to be read only forward, as they only contain
|
||||
the size of each event in the header.
|
||||
|
||||
Currently, we only support using the threads as sources of events, using
|
||||
one stream per thread. However, adding support for more streams from
|
||||
multiple sources is planned for the future.
|
||||
|
||||
94
doc/user/runtime/tracing.md
Normal file
94
doc/user/runtime/tracing.md
Normal file
@ -0,0 +1,94 @@
|
||||
# Tracing a new program
|
||||
|
||||
Read carefully this document before using libovni to instrument a new
|
||||
component. There are a few rules you must follow to ensure the runtime
|
||||
trace is correct.
|
||||
|
||||
## Trace processes and threads
|
||||
|
||||
- Call `ovni_version_check()` once before calling any ovni function.
|
||||
|
||||
- Call `ovni_proc_init()` when a new process begins the execution.
|
||||
|
||||
- Call `ovni_thread_init()` when a new thread begins the execution
|
||||
(including the main process thread).
|
||||
|
||||
- Call `ovni_thread_require()` with the required model version before
|
||||
emitting events for that model.
|
||||
|
||||
- Call `ovni_flush()` and `ovni_thread_free()` when it finishes (in that
|
||||
order).
|
||||
|
||||
- Call `ovni_proc_fini()` when a process ends, after all threads have
|
||||
finished.
|
||||
|
||||
You can use `ovni_ev_emit()` to record a new event. If you need more
|
||||
than 16 bytes of payload, use `ovni_ev_jumbo_emit()`. See the [trace
|
||||
specification](../trace_spec) for more details.
|
||||
|
||||
Compile and link with libovni. When you run your program, a new
|
||||
directory ovni will be created in the current directory `$PWD/ovni`
|
||||
which contains the execution trace.
|
||||
|
||||
You can change the trace directory by defining the `OVNI_TRACEDIR`
|
||||
environment variable. The envar accepts a trace directory name, a
|
||||
relative path to the trace directory, or its absolute path. In the
|
||||
first case, the trace directory will be created in the current
|
||||
directory `$PWD`.
|
||||
|
||||
## Rules
|
||||
|
||||
Follow these rules to avoid losing events:
|
||||
|
||||
1. No event may be emitted until the process is initialized with
|
||||
`ovni_proc_init()` and the thread with `ovni_thread_init()`.
|
||||
|
||||
2. When a thread ends the execution, it must call `ovni_flush()` to write the
|
||||
events in the buffer to disk.
|
||||
|
||||
3. All threads must have flushed its buffers before calling `ovni_proc_fini()`.
|
||||
|
||||
## Select a fast directory
|
||||
|
||||
During the execution of your program, a per-thread buffer is kept where the new
|
||||
events are being recorded. When this buffer is full, it is written to disk and
|
||||
emptied, an operation known as flush. This may take a while depending on the
|
||||
underliying filesystem.
|
||||
|
||||
Keep in mind that the thread will be blocked until the flush ends, so if your
|
||||
filesystem is slow it would interrupt the execution of your program for a long
|
||||
time. It is advisable to use the fastest filesystem available (see the tmpfs(5)
|
||||
and df(1) manual pages).
|
||||
|
||||
You can select the trace directory where the buffers will be flushed during the
|
||||
execution by setting the environment variable `OVNI_TMPDIR`. The last directory
|
||||
will be created if doesn't exist. In that case, as soon as a process calls
|
||||
`ovni_proc_fini()`, the traces of all its threads will be moved to the final
|
||||
directory at `$PWD/ovni`. Example:
|
||||
|
||||
OVNI_TMPDIR=$(mktemp -u /dev/shm/ovni.XXXXXX) srun ./your-app
|
||||
|
||||
To test the different filesystem speeds, you can use hyperfine and dd. Take a
|
||||
closer look at the max time:
|
||||
|
||||
```
|
||||
$ hyperfine 'dd if=/dev/zero of=/gpfs/projects/bsc15/bsc15557/kk bs=2M count=10'
|
||||
Benchmark 1: dd if=/dev/zero of=/gpfs/projects/bsc15/bsc15557/kk bs=2M count=10
|
||||
Time (mean ± σ): 71.7 ms ± 130.4 ms [User: 0.8 ms, System: 10.2 ms]
|
||||
Range (min … max): 14.7 ms … 1113.2 ms 162 runs
|
||||
|
||||
Warning: Statistical outliers were detected. Consider re-running this
|
||||
benchmark on a quiet PC without any interferences from other programs. It
|
||||
might help to use the '--warmup' or '--prepare' options.
|
||||
|
||||
$ hyperfine 'dd if=/dev/zero of=/tmp/kk bs=2M count=10'
|
||||
Benchmark 1: dd if=/dev/zero of=/tmp/kk bs=2M count=10
|
||||
Time (mean ± σ): 56.2 ms ± 5.7 ms [User: 0.6 ms, System: 14.8 ms]
|
||||
Range (min … max): 45.8 ms … 77.8 ms 63 runs
|
||||
|
||||
$ hyperfine 'dd if=/dev/zero of=/dev/shm/kk bs=2M count=10'
|
||||
Benchmark 1: dd if=/dev/zero of=/dev/shm/kk bs=2M count=10
|
||||
Time (mean ± σ): 11.4 ms ± 0.4 ms [User: 0.5 ms, System: 11.1 ms]
|
||||
Range (min … max): 9.7 ms … 12.5 ms 269 runs
|
||||
```
|
||||
|
||||
@ -18,7 +18,7 @@ extern "C" {
|
||||
#include <string.h>
|
||||
#include <sys/types.h>
|
||||
|
||||
#define OVNI_METADATA_VERSION 3
|
||||
#define OVNI_METADATA_VERSION 2
|
||||
|
||||
#define OVNI_TRACEDIR "ovni"
|
||||
#define OVNI_MAX_HOSTNAME 512
|
||||
@ -31,9 +31,6 @@ extern "C" {
|
||||
|
||||
#define OVNI_STREAM_EXT ".obs"
|
||||
|
||||
/* Version of the ovni model for events */
|
||||
#define OVNI_MODEL_VERSION "1.1.0"
|
||||
|
||||
/* Follow https://semver.org rules for versioning */
|
||||
#define OVNI_LIB_VERSION "@PROJECT_VERSION@"
|
||||
#define OVNI_GIT_COMMIT "@OVNI_GIT_COMMIT@"
|
||||
|
||||
@ -23,13 +23,10 @@ markdown_extensions:
|
||||
nav:
|
||||
- index.md
|
||||
- 'User guide':
|
||||
- user/concepts.md
|
||||
- user/installation.md
|
||||
- 'Concepts':
|
||||
- user/concepts/part-model.md
|
||||
- user/concepts/trace.md
|
||||
- 'Runtime':
|
||||
- user/runtime/index.md
|
||||
- user/runtime/env.md
|
||||
- user/runtime/tracing.md
|
||||
- user/runtime/mark.md
|
||||
- user/runtime/distributed.md
|
||||
- user/runtime/kernel.md
|
||||
|
||||
@ -30,6 +30,7 @@ add_library(emu STATIC
|
||||
stream.c
|
||||
trace.c
|
||||
loom.c
|
||||
metadata.c
|
||||
mux.c
|
||||
sort.c
|
||||
path.c
|
||||
|
||||
197
src/emu/loom.c
197
src/emu/loom.c
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include "loom.h"
|
||||
@ -8,13 +8,15 @@
|
||||
#include "cpu.h"
|
||||
#include "path.h"
|
||||
#include "proc.h"
|
||||
#include "stream.h"
|
||||
#include "uthash.h"
|
||||
|
||||
static const char *loom_prefix = "loom.";
|
||||
|
||||
static void
|
||||
set_hostname(char host[PATH_MAX], const char name[PATH_MAX])
|
||||
{
|
||||
const char *start = name;
|
||||
/* Skip prefix */
|
||||
const char *start = name + strlen(loom_prefix);
|
||||
|
||||
/* Copy until dot or end */
|
||||
int i;
|
||||
@ -28,19 +30,10 @@ set_hostname(char host[PATH_MAX], const char name[PATH_MAX])
|
||||
host[i] = '\0';
|
||||
}
|
||||
|
||||
const char *
|
||||
loom_name(struct stream *s)
|
||||
int
|
||||
loom_matches(const char *path)
|
||||
{
|
||||
JSON_Object *meta = stream_metadata(s);
|
||||
const char *loom = json_object_dotget_string(meta, "ovni.loom");
|
||||
|
||||
if (loom == NULL) {
|
||||
err("cannot get attribute ovni.loom for stream: %s",
|
||||
s->relpath);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return loom;
|
||||
return path_has_prefix(path, loom_prefix);
|
||||
}
|
||||
|
||||
int
|
||||
@ -48,6 +41,11 @@ loom_init_begin(struct loom *loom, const char *name)
|
||||
{
|
||||
memset(loom, 0, sizeof(struct loom));
|
||||
|
||||
if (!path_has_prefix(name, loom_prefix)) {
|
||||
err("loom name must start with '%s': %s", loom_prefix, name);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (strchr(name, '/') != NULL) {
|
||||
err("loom name cannot contain '/': %s", name);
|
||||
return -1;
|
||||
@ -70,84 +68,6 @@ loom_init_begin(struct loom *loom, const char *name)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Merges the metadata CPUs with the ones in the loom */
|
||||
static int
|
||||
load_cpus(struct loom *loom, JSON_Object *meta)
|
||||
{
|
||||
JSON_Array *cpuarray = json_object_dotget_array(meta, "ovni.loom_cpus");
|
||||
|
||||
/* It may not have the CPUs defined */
|
||||
if (cpuarray == NULL)
|
||||
return 0;
|
||||
|
||||
size_t ncpus = json_array_get_count(cpuarray);
|
||||
if (ncpus == 0) {
|
||||
err("empty 'cpus' array in metadata");
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < ncpus; i++) {
|
||||
JSON_Object *jcpu = json_array_get_object(cpuarray, i);
|
||||
if (jcpu == NULL) {
|
||||
err("json_array_get_object() failed for cpu");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Cast from double */
|
||||
int index = (int) json_object_get_number(jcpu, "index");
|
||||
int phyid = (int) json_object_get_number(jcpu, "phyid");
|
||||
|
||||
struct cpu *cpu = loom_find_cpu(loom, phyid);
|
||||
|
||||
if (cpu) {
|
||||
/* Ensure they have the same index */
|
||||
if (cpu->index != index) {
|
||||
err("mismatch index in existing cpu: %d", index);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Duplicated, ignore */
|
||||
continue;
|
||||
}
|
||||
|
||||
cpu = calloc(1, sizeof(struct cpu));
|
||||
if (cpu == NULL) {
|
||||
err("calloc failed:");
|
||||
return -1;
|
||||
}
|
||||
|
||||
cpu_init_begin(cpu, index, phyid, 0);
|
||||
|
||||
if (loom_add_cpu(loom, cpu) != 0) {
|
||||
err("loom_add_cpu() failed");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/** Merges the given metadata with the one stored.
|
||||
*
|
||||
* It is an error to provide metadata that doesn't match with the already stored
|
||||
* in the process.
|
||||
*
|
||||
* Precondition: The stream ovni.part must be "thread".
|
||||
* Precondition: The stream version must be ok.
|
||||
*/
|
||||
int
|
||||
loom_load_metadata(struct loom *loom, struct stream *s)
|
||||
{
|
||||
JSON_Object *meta = stream_metadata(s);
|
||||
|
||||
if (load_cpus(loom, meta) != 0) {
|
||||
err("cannot load loom cpus");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
loom_set_gindex(struct loom *loom, int64_t gindex)
|
||||
{
|
||||
@ -261,44 +181,6 @@ by_phyid(struct cpu *c1, struct cpu *c2)
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
loom_set_rank_min(struct loom *loom)
|
||||
{
|
||||
if (loom->rank_min != INT_MAX) {
|
||||
err("rank_min already set");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Ensure that all processes have a rank */
|
||||
for (struct proc *p = loom->procs; p; p = p->hh.next) {
|
||||
if (p->rank >= 0) {
|
||||
loom->rank_enabled = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!loom->rank_enabled) {
|
||||
dbg("loom %s has no rank information", loom->name);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Ensure that all processes have a rank */
|
||||
for (struct proc *p = loom->procs; p; p = p->hh.next) {
|
||||
if (p->rank < 0) {
|
||||
err("process %s has no rank information", p->id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Compute rank_min for CPU sorting */
|
||||
if (p->rank < loom->rank_min)
|
||||
loom->rank_min = p->rank;
|
||||
}
|
||||
|
||||
dbg("loom %s has rank_min %d", loom->name, loom->rank_min);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
loom_sort(struct loom *loom)
|
||||
{
|
||||
@ -316,22 +198,22 @@ loom_sort(struct loom *loom)
|
||||
int
|
||||
loom_init_end(struct loom *loom)
|
||||
{
|
||||
/* rank_min must be set */
|
||||
if (loom->rank_enabled && loom->rank_min == INT_MAX) {
|
||||
err("rank_min not set");
|
||||
return -1;
|
||||
/* Set rank enabled */
|
||||
for (struct proc *p = loom->procs; p; p = p->hh.next) {
|
||||
if (p->rank >= 0) {
|
||||
loom->rank_enabled = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* It is not valid to define a loom without CPUs */
|
||||
if (loom->ncpus == 0) {
|
||||
err("loom %s has no physical CPUs", loom->name);
|
||||
/* Ensure that all processes have a rank */
|
||||
if (loom->rank_enabled) {
|
||||
for (struct proc *p = loom->procs; p; p = p->hh.next) {
|
||||
if (p->rank < 0) {
|
||||
err("process %s has no rank information", p->id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Or without processes */
|
||||
if (loom->nprocs == 0) {
|
||||
err("loom %s has no processes", loom->name);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
/* Populate cpus_array */
|
||||
@ -340,7 +222,6 @@ loom_init_end(struct loom *loom)
|
||||
err("calloc failed:");
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (struct cpu *c = loom->cpus; c; c = c->hh.next) {
|
||||
int index = cpu_get_index(c);
|
||||
if (index < 0 || (size_t) index >= loom->ncpus) {
|
||||
@ -396,6 +277,34 @@ loom_add_proc(struct loom *loom, struct proc *proc)
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (!proc->metadata_loaded) {
|
||||
err("process %d hasn't loaded metadata", pid);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (loom->rank_enabled && proc->rank < 0) {
|
||||
err("missing rank in process %d", pid);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Check previous ranks if any */
|
||||
if (!loom->rank_enabled && proc->rank >= 0) {
|
||||
loom->rank_enabled = 1;
|
||||
|
||||
for (struct proc *p = loom->procs; p; p = p->hh.next) {
|
||||
if (p->rank < 0) {
|
||||
err("missing rank in process %d", p->pid);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (p->rank < loom->rank_min)
|
||||
loom->rank_min = p->rank;
|
||||
}
|
||||
}
|
||||
|
||||
if (loom->rank_enabled && proc->rank < loom->rank_min)
|
||||
loom->rank_min = proc->rank;
|
||||
|
||||
HASH_ADD_INT(loom->procs, pid, proc);
|
||||
loom->nprocs++;
|
||||
|
||||
|
||||
@ -12,7 +12,6 @@
|
||||
#include "cpu.h"
|
||||
#include "extend.h"
|
||||
struct proc;
|
||||
struct stream;
|
||||
|
||||
struct loom {
|
||||
int64_t gindex;
|
||||
@ -51,10 +50,8 @@ struct loom {
|
||||
struct extend ext;
|
||||
};
|
||||
|
||||
USE_RET const char *loom_name(struct stream *s);
|
||||
USE_RET int loom_matches(const char *relpath);
|
||||
USE_RET int loom_init_begin(struct loom *loom, const char *name);
|
||||
USE_RET int loom_load_metadata(struct loom *loom, struct stream *s);
|
||||
USE_RET int loom_set_rank_min(struct loom *loom);
|
||||
USE_RET int loom_init_end(struct loom *loom);
|
||||
USE_RET int loom_add_cpu(struct loom *loom, struct cpu *cpu);
|
||||
USE_RET int64_t loom_get_gindex(struct loom *loom);
|
||||
|
||||
159
src/emu/metadata.c
Normal file
159
src/emu/metadata.c
Normal file
@ -0,0 +1,159 @@
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include "metadata.h"
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include "cpu.h"
|
||||
#include "loom.h"
|
||||
#include "ovni.h"
|
||||
#include "parson.h"
|
||||
#include "proc.h"
|
||||
#include "thread.h"
|
||||
|
||||
static JSON_Object *
|
||||
load_json(const char *path)
|
||||
{
|
||||
JSON_Value *vmeta = json_parse_file_with_comments(path);
|
||||
if (vmeta == NULL) {
|
||||
err("json_parse_file_with_comments() failed");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
JSON_Object *meta = json_value_get_object(vmeta);
|
||||
if (meta == NULL) {
|
||||
err("json_value_get_object() failed");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return meta;
|
||||
}
|
||||
|
||||
static int
|
||||
check_version(JSON_Object *meta)
|
||||
{
|
||||
JSON_Value *version_val = json_object_get_value(meta, "version");
|
||||
if (version_val == NULL) {
|
||||
err("missing attribute \"version\"");
|
||||
return -1;
|
||||
}
|
||||
|
||||
int version = (int) json_number(version_val);
|
||||
|
||||
if (version != OVNI_METADATA_VERSION) {
|
||||
err("metadata version mismatch %d (expected %d)",
|
||||
version, OVNI_METADATA_VERSION);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
has_cpus(JSON_Object *meta)
|
||||
{
|
||||
/* Only check for the "cpus" key, if it has zero elements is an error
|
||||
* that will be reported later */
|
||||
if (json_object_get_array(meta, "cpus") != NULL)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
load_cpus(struct loom *loom, JSON_Object *meta)
|
||||
{
|
||||
JSON_Array *cpuarray = json_object_get_array(meta, "cpus");
|
||||
if (cpuarray == NULL) {
|
||||
err("cannot find 'cpus' array");
|
||||
return -1;
|
||||
}
|
||||
|
||||
size_t ncpus = json_array_get_count(cpuarray);
|
||||
if (ncpus == 0) {
|
||||
err("empty 'cpus' array in metadata");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (loom->ncpus > 0) {
|
||||
err("loom %s already has cpus", loom->id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (size_t i = 0; i < ncpus; i++) {
|
||||
JSON_Object *jcpu = json_array_get_object(cpuarray, i);
|
||||
if (jcpu == NULL) {
|
||||
err("json_array_get_object() failed for cpu");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Cast from double */
|
||||
int index = (int) json_object_get_number(jcpu, "index");
|
||||
int phyid = (int) json_object_get_number(jcpu, "phyid");
|
||||
|
||||
struct cpu *cpu = calloc(1, sizeof(struct cpu));
|
||||
if (cpu == NULL) {
|
||||
err("calloc failed:");
|
||||
return -1;
|
||||
}
|
||||
|
||||
cpu_init_begin(cpu, index, phyid, 0);
|
||||
|
||||
if (loom_add_cpu(loom, cpu) != 0) {
|
||||
err("loom_add_cpu() failed");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
metadata_load_proc(const char *path, struct loom *loom, struct proc *proc)
|
||||
{
|
||||
JSON_Object *meta = load_json(path);
|
||||
if (meta == NULL) {
|
||||
err("cannot load proc metadata from file %s", path);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (check_version(meta) != 0) {
|
||||
err("version check failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* The appid is populated from the metadata */
|
||||
if (proc_load_metadata(proc, meta) != 0) {
|
||||
err("cannot load process attributes");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (has_cpus(meta) && load_cpus(loom, meta) != 0) {
|
||||
err("cannot load loom cpus");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
metadata_load_thread(const char *path, struct thread *thread)
|
||||
{
|
||||
JSON_Object *meta = load_json(path);
|
||||
if (meta == NULL) {
|
||||
err("cannot load thread metadata from file %s", path);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (check_version(meta) != 0) {
|
||||
err("version check failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (thread_load_metadata(thread, meta) != 0) {
|
||||
err("cannot load thread attributes");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
15
src/emu/metadata.h
Normal file
15
src/emu/metadata.h
Normal file
@ -0,0 +1,15 @@
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#ifndef METADATA_H
|
||||
#define METADATA_H
|
||||
|
||||
#include "common.h"
|
||||
struct loom;
|
||||
struct proc;
|
||||
struct thread;
|
||||
|
||||
USE_RET int metadata_load_proc(const char *path, struct loom *loom, struct proc *proc);
|
||||
USE_RET int metadata_load_thread(const char *path, struct thread *thread);
|
||||
|
||||
#endif /* METADATA_H */
|
||||
@ -235,6 +235,13 @@ model_finish(struct model *model, struct emu *emu)
|
||||
static int
|
||||
should_enable(int have[3], struct model_spec *spec, struct thread *t)
|
||||
{
|
||||
static int compat = 0;
|
||||
|
||||
/* Enable all models if we are in compatibility model. Don't check other
|
||||
* threads metadata */
|
||||
if (compat)
|
||||
return 1;
|
||||
|
||||
if (t->meta == NULL) {
|
||||
err("missing metadata for thread %s", t->id);
|
||||
return -1;
|
||||
@ -242,8 +249,12 @@ should_enable(int have[3], struct model_spec *spec, struct thread *t)
|
||||
|
||||
JSON_Object *require = json_object_dotget_object(t->meta, "ovni.require");
|
||||
if (require == NULL) {
|
||||
err("missing 'ovni.require' key in thread %s", t->id);
|
||||
return -1;
|
||||
warn("missing 'ovni.require' key in thread %s", t->id);
|
||||
warn("loading trace in compatibility mode");
|
||||
warn("all models will be enabled (expect slowdown)");
|
||||
warn("use ovni_thread_require() to enable only required models");
|
||||
compat = 1;
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* May not have the current model */
|
||||
|
||||
@ -13,7 +13,6 @@
|
||||
#include "model_cpu.h"
|
||||
#include "model_pvt.h"
|
||||
#include "model_thread.h"
|
||||
#include "ovni.h"
|
||||
#include "pv/pcf.h"
|
||||
#include "pv/prv.h"
|
||||
#include "system.h"
|
||||
@ -48,7 +47,7 @@ static struct ev_decl model_evlist[] = {
|
||||
|
||||
struct model_spec model_ovni = {
|
||||
.name = model_name,
|
||||
.version = OVNI_MODEL_VERSION,
|
||||
.version = "1.1.0",
|
||||
.evlist = model_evlist,
|
||||
.model = model_id,
|
||||
.create = model_ovni_create,
|
||||
|
||||
@ -361,7 +361,7 @@ execute_sort_plan(struct sortplan *sp)
|
||||
static int
|
||||
stream_winsort(struct stream *stream, struct ring *r)
|
||||
{
|
||||
char *fn = stream->obspath;
|
||||
char *fn = stream->path;
|
||||
int fd = open(fn, O_WRONLY);
|
||||
|
||||
if (fd < 0)
|
||||
|
||||
@ -112,47 +112,3 @@ path_filename(const char *path)
|
||||
|
||||
return start;
|
||||
}
|
||||
|
||||
int
|
||||
path_append(char dst[PATH_MAX], const char *src, const char *extra)
|
||||
{
|
||||
if (snprintf(dst, PATH_MAX, "%s/%s", src, extra) >= PATH_MAX) {
|
||||
err("path too long: %s/%s", src, extra);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/** Copy the path src into dst. */
|
||||
int
|
||||
path_copy(char dst[PATH_MAX], const char *src)
|
||||
{
|
||||
if (snprintf(dst, PATH_MAX, "%s", src) >= PATH_MAX) {
|
||||
err("path too long: %s", src);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/** Strip last component from path */
|
||||
void
|
||||
path_dirname(char path[PATH_MAX])
|
||||
{
|
||||
path_remove_trailing(path);
|
||||
int n = (int) strlen(path);
|
||||
int i;
|
||||
for (i = n - 1; i >= 0; i--) {
|
||||
if (path[i] == '/') {
|
||||
break;
|
||||
}
|
||||
}
|
||||
/* Remove all '/' */
|
||||
for (; i >= 0; i--) {
|
||||
if (path[i] != '/')
|
||||
break;
|
||||
else
|
||||
path[i] = '\0';
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,10 +1,9 @@
|
||||
/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#ifndef PATH_H
|
||||
#define PATH_H
|
||||
|
||||
#include <limits.h>
|
||||
#include "common.h"
|
||||
|
||||
USE_RET int path_has_prefix(const char *path, const char *prefix);
|
||||
@ -14,8 +13,5 @@ USE_RET int path_keep(char *path, int n);
|
||||
USE_RET int path_strip(const char *path, int n, const char (**next));
|
||||
void path_remove_trailing(char *path);
|
||||
USE_RET const char *path_filename(const char *path);
|
||||
USE_RET int path_append(char dst[PATH_MAX], const char *src, const char *extra);
|
||||
USE_RET int path_copy(char dst[PATH_MAX], const char *src);
|
||||
void path_dirname(char path[PATH_MAX]);
|
||||
|
||||
#endif /* PATH_H */
|
||||
|
||||
200
src/emu/proc.c
200
src/emu/proc.c
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include "proc.h"
|
||||
@ -6,42 +6,85 @@
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include "path.h"
|
||||
#include "stream.h"
|
||||
#include "thread.h"
|
||||
|
||||
int
|
||||
proc_stream_get_pid(struct stream *s)
|
||||
static int
|
||||
get_pid(const char *id, int *pid)
|
||||
{
|
||||
JSON_Object *meta = stream_metadata(s);
|
||||
/* TODO: Store the PID the metadata.json instead */
|
||||
|
||||
double pid = json_object_dotget_number(meta, "ovni.pid");
|
||||
|
||||
/* Zero is used for errors, so forbidden for pid too */
|
||||
if (pid == 0) {
|
||||
err("cannot get attribute ovni.pid for stream: %s",
|
||||
s->relpath);
|
||||
/* The id must be like "loom.host01.123/proc.345" */
|
||||
if (path_count(id, '/') != 1) {
|
||||
err("proc id can only contain one '/': %s", id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return (int) pid;
|
||||
/* Get the proc.345 part */
|
||||
const char *procname;
|
||||
if (path_next(id, '/', &procname) != 0) {
|
||||
err("cannot get proc name");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Ensure the prefix is ok */
|
||||
const char prefix[] = "proc.";
|
||||
if (!path_has_prefix(procname, prefix)) {
|
||||
err("proc name must start with '%s': %s", prefix, id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Get the 345 part */
|
||||
const char *pidstr;
|
||||
if (path_next(procname, '.', &pidstr) != 0) {
|
||||
err("cannot find proc dot in '%s'", id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
*pid = atoi(pidstr);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
proc_init_begin(struct proc *proc, int pid)
|
||||
proc_relpath_get_pid(const char *relpath, int *pid)
|
||||
{
|
||||
char id[PATH_MAX];
|
||||
|
||||
if (snprintf(id, PATH_MAX, "%s", relpath) >= PATH_MAX) {
|
||||
err("path too long");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (path_keep(id, 2) != 0) {
|
||||
err("cannot delimite proc dir");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return get_pid(id, pid);
|
||||
}
|
||||
|
||||
int
|
||||
proc_init_begin(struct proc *proc, const char *relpath)
|
||||
{
|
||||
memset(proc, 0, sizeof(struct proc));
|
||||
|
||||
proc->gindex = -1;
|
||||
proc->appid = 0;
|
||||
proc->rank = -1;
|
||||
proc->nranks = 0;
|
||||
proc->pid = pid;
|
||||
|
||||
if (snprintf(proc->id, PATH_MAX, "proc.%d", pid) >= PATH_MAX) {
|
||||
if (snprintf(proc->id, PATH_MAX, "%s", relpath) >= PATH_MAX) {
|
||||
err("path too long");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (path_keep(proc->id, 2) != 0) {
|
||||
err("cannot delimite proc dir");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (get_pid(proc->id, &proc->pid) != 0) {
|
||||
err("cannot parse proc pid");
|
||||
return -1;
|
||||
}
|
||||
|
||||
dbg("created proc %s", proc->id);
|
||||
|
||||
return 0;
|
||||
@ -59,106 +102,39 @@ proc_set_loom(struct proc *proc, struct loom *loom)
|
||||
proc->loom = loom;
|
||||
}
|
||||
|
||||
static int
|
||||
load_appid(struct proc *proc, struct stream *s)
|
||||
{
|
||||
JSON_Object *meta = stream_metadata(s);
|
||||
JSON_Value *appid_val = json_object_dotget_value(meta, "ovni.app_id");
|
||||
|
||||
/* May not be present in all thread streams */
|
||||
if (appid_val == NULL)
|
||||
return 0;
|
||||
|
||||
int appid = (int) json_number(appid_val);
|
||||
if (proc->appid && proc->appid != appid) {
|
||||
err("mismatch previous appid %d with stream: %s",
|
||||
proc->appid, s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (appid <= 0) {
|
||||
err("appid must be >0, stream: %s", s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
proc->appid = appid;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
load_rank(struct proc *proc, struct stream *s)
|
||||
{
|
||||
JSON_Object *meta = stream_metadata(s);
|
||||
JSON_Value *rank_val = json_object_dotget_value(meta, "ovni.rank");
|
||||
|
||||
/* Optional */
|
||||
if (rank_val == NULL) {
|
||||
dbg("process %s has no rank", proc->id);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int rank = (int) json_number(rank_val);
|
||||
|
||||
if (rank < 0) {
|
||||
err("rank %d must be >=0, stream: %s", rank, s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (proc->rank >= 0 && proc->rank != rank) {
|
||||
err("mismatch previous rank %d with stream: %s",
|
||||
proc->rank, s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Same with nranks, but it is not optional now */
|
||||
JSON_Value *nranks_val = json_object_dotget_value(meta, "ovni.nranks");
|
||||
if (nranks_val == NULL) {
|
||||
err("missing ovni.nranks attribute: %s", s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
int nranks = (int) json_number(nranks_val);
|
||||
|
||||
if (nranks <= 0) {
|
||||
err("nranks %d must be >0, stream: %s", nranks, s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (proc->nranks > 0 && proc->nranks != nranks) {
|
||||
err("mismatch previous nranks %d with stream: %s",
|
||||
proc->nranks, s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Ensure rank fits in nranks */
|
||||
if (rank >= nranks) {
|
||||
err("rank %d must be lower than nranks %d: %s",
|
||||
rank, nranks, s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
dbg("process %s rank=%d nranks=%d",
|
||||
proc->id, rank, nranks);
|
||||
proc->rank = rank;
|
||||
proc->nranks = nranks;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/** Merges the metadata from the stream in the process. */
|
||||
int
|
||||
proc_load_metadata(struct proc *proc, struct stream *s)
|
||||
proc_load_metadata(struct proc *proc, JSON_Object *meta)
|
||||
{
|
||||
if (load_appid(proc, s) != 0) {
|
||||
err("load_appid failed for stream: %s", s->relpath);
|
||||
if (proc->metadata_loaded) {
|
||||
err("process %s already loaded metadata", proc->id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (load_rank(proc, s) != 0) {
|
||||
err("load_rank failed for stream: %s", s->relpath);
|
||||
JSON_Value *version_val = json_object_get_value(meta, "version");
|
||||
if (version_val == NULL) {
|
||||
err("missing attribute 'version' in metadata");
|
||||
return -1;
|
||||
}
|
||||
|
||||
proc->metadata_version = (int) json_number(version_val);
|
||||
|
||||
JSON_Value *appid_val = json_object_get_value(meta, "app_id");
|
||||
if (appid_val == NULL) {
|
||||
err("missing attribute 'app_id' in metadata");
|
||||
return -1;
|
||||
}
|
||||
|
||||
proc->appid = (int) json_number(appid_val);
|
||||
|
||||
JSON_Value *rank_val = json_object_get_value(meta, "rank");
|
||||
|
||||
if (rank_val != NULL)
|
||||
proc->rank = (int) json_number(rank_val);
|
||||
else
|
||||
proc->rank = -1;
|
||||
|
||||
proc->metadata_loaded = 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -221,8 +197,8 @@ proc_init_end(struct proc *proc)
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (proc->appid <= 0) {
|
||||
err("appid not set");
|
||||
if (!proc->metadata_loaded) {
|
||||
err("metadata not loaded");
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#ifndef PROC_H
|
||||
@ -8,9 +8,9 @@
|
||||
#include <stdint.h>
|
||||
#include "common.h"
|
||||
#include "extend.h"
|
||||
#include "parson.h"
|
||||
#include "uthash.h"
|
||||
struct loom;
|
||||
struct stream;
|
||||
struct thread;
|
||||
|
||||
struct proc {
|
||||
@ -18,11 +18,12 @@ struct proc {
|
||||
char id[PATH_MAX];
|
||||
int is_init;
|
||||
|
||||
int metadata_loaded;
|
||||
int metadata_version;
|
||||
int pid;
|
||||
int index;
|
||||
int appid;
|
||||
int rank;
|
||||
int nranks;
|
||||
|
||||
int nthreads;
|
||||
struct thread *threads;
|
||||
@ -44,14 +45,14 @@ struct proc {
|
||||
struct extend ext;
|
||||
};
|
||||
|
||||
USE_RET int proc_stream_get_pid(struct stream *s);
|
||||
USE_RET int proc_init_begin(struct proc *proc, int pid);
|
||||
USE_RET int proc_relpath_get_pid(const char *relpath, int *pid);
|
||||
USE_RET int proc_init_begin(struct proc *proc, const char *id);
|
||||
USE_RET int proc_init_end(struct proc *proc);
|
||||
USE_RET int proc_get_pid(struct proc *proc);
|
||||
void proc_set_gindex(struct proc *proc, int64_t gindex);
|
||||
void proc_set_loom(struct proc *proc, struct loom *loom);
|
||||
void proc_sort(struct proc *proc);
|
||||
USE_RET int proc_load_metadata(struct proc *proc, struct stream *s);
|
||||
USE_RET int proc_load_metadata(struct proc *proc, JSON_Object *meta);
|
||||
USE_RET struct thread *proc_find_thread(struct proc *proc, int tid);
|
||||
USE_RET int proc_add_thread(struct proc *proc, struct thread *thread);
|
||||
void proc_sort(struct proc *proc);
|
||||
|
||||
132
src/emu/stream.c
132
src/emu/stream.c
@ -71,22 +71,41 @@ load_stream_fd(struct stream *stream, int fd)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
load_obs(struct stream *stream, const char *path)
|
||||
int
|
||||
stream_load(struct stream *stream, const char *tracedir, const char *relpath)
|
||||
{
|
||||
memset(stream, 0, sizeof(struct stream));
|
||||
|
||||
if (snprintf(stream->path, PATH_MAX, "%s/%s", tracedir, relpath) >= PATH_MAX) {
|
||||
err("path too long: %s/%s", tracedir, relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Allow loading a trace with empty relpath */
|
||||
path_remove_trailing(stream->path);
|
||||
|
||||
if (snprintf(stream->relpath, PATH_MAX, "%s", relpath) >= PATH_MAX) {
|
||||
err("path too long: %s", relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
dbg("loading %s", stream->relpath);
|
||||
|
||||
int fd;
|
||||
if ((fd = open(path, O_RDWR)) == -1) {
|
||||
err("open %s failed:", path);
|
||||
if ((fd = open(stream->path, O_RDWR)) == -1) {
|
||||
err("open %s failed:", stream->path);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (load_stream_fd(stream, fd) != 0) {
|
||||
err("load_stream_fd failed for: %s", path);
|
||||
err("load_stream_fd failed for stream '%s'",
|
||||
stream->path);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (check_stream_header(stream) != 0) {
|
||||
err("stream has bad header: %s", path);
|
||||
err("stream '%s' has bad header",
|
||||
stream->path);
|
||||
return -1;
|
||||
}
|
||||
|
||||
@ -113,97 +132,6 @@ load_obs(struct stream *stream, const char *path)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
check_version(JSON_Object *meta)
|
||||
{
|
||||
JSON_Value *version_val = json_object_get_value(meta, "version");
|
||||
if (version_val == NULL) {
|
||||
err("missing attribute \"version\"");
|
||||
return -1;
|
||||
}
|
||||
|
||||
int version = (int) json_number(version_val);
|
||||
|
||||
if (version != OVNI_METADATA_VERSION) {
|
||||
err("metadata version mismatch %d (expected %d)",
|
||||
version, OVNI_METADATA_VERSION);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static JSON_Object *
|
||||
load_json(const char *path)
|
||||
{
|
||||
JSON_Value *vmeta = json_parse_file_with_comments(path);
|
||||
if (vmeta == NULL) {
|
||||
err("json_parse_file_with_comments() failed");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
JSON_Object *meta = json_value_get_object(vmeta);
|
||||
if (meta == NULL) {
|
||||
err("json_value_get_object() failed");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (check_version(meta) != 0) {
|
||||
err("check_version failed");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return meta;
|
||||
}
|
||||
|
||||
/** Loads a stream from disk.
|
||||
*
|
||||
* The relpath must be pointing to a directory with the stream.json and
|
||||
* stream.obs files.
|
||||
*/
|
||||
int
|
||||
stream_load(struct stream *stream, const char *tracedir, const char *relpath)
|
||||
{
|
||||
memset(stream, 0, sizeof(struct stream));
|
||||
|
||||
if (snprintf(stream->path, PATH_MAX, "%s/%s", tracedir, relpath) >= PATH_MAX) {
|
||||
err("path too long: %s/%s", tracedir, relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Allow loading a trace with empty relpath */
|
||||
path_remove_trailing(stream->path);
|
||||
|
||||
if (snprintf(stream->relpath, PATH_MAX, "%s", relpath) >= PATH_MAX) {
|
||||
err("path too long: %s", relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
dbg("loading %s", stream->relpath);
|
||||
|
||||
if (path_append(stream->jsonpath, stream->path, "stream.json") != 0) {
|
||||
err("path_append failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if ((stream->meta = load_json(stream->jsonpath)) == NULL) {
|
||||
err("load_json failed for: %s", stream->jsonpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (path_append(stream->obspath, stream->path, "stream.obs") != 0) {
|
||||
err("path_append failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (load_obs(stream, stream->obspath) != 0) {
|
||||
err("load_obs failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
stream_data_set(struct stream *stream, void *data)
|
||||
{
|
||||
@ -216,16 +144,6 @@ stream_data_get(struct stream *stream)
|
||||
return stream->data;
|
||||
}
|
||||
|
||||
/* Is never NULL */
|
||||
JSON_Object *
|
||||
stream_metadata(struct stream *stream)
|
||||
{
|
||||
if (stream->meta == NULL)
|
||||
die("stream metadata is NULL: %s", stream->relpath);
|
||||
|
||||
return stream->meta;
|
||||
}
|
||||
|
||||
int
|
||||
stream_clkoff_set(struct stream *stream, int64_t clkoff)
|
||||
{
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#ifndef STREAM_H
|
||||
@ -8,7 +8,6 @@
|
||||
#include <stdint.h>
|
||||
#include "common.h"
|
||||
#include "heap.h"
|
||||
#include "parson.h"
|
||||
struct ovni_ev;
|
||||
|
||||
struct stream {
|
||||
@ -28,17 +27,13 @@ struct stream {
|
||||
int active;
|
||||
int unsorted;
|
||||
|
||||
char path[PATH_MAX]; /* To stream dir */
|
||||
char path[PATH_MAX];
|
||||
char relpath[PATH_MAX]; /* To tracedir */
|
||||
char obspath[PATH_MAX]; /* To obs file */
|
||||
char jsonpath[PATH_MAX]; /* To json file */
|
||||
|
||||
int64_t usize; /* Useful size for events */
|
||||
int64_t offset;
|
||||
|
||||
double progress;
|
||||
|
||||
JSON_Object *meta;
|
||||
};
|
||||
|
||||
USE_RET int stream_load(struct stream *stream, const char *tracedir, const char *relpath);
|
||||
@ -51,6 +46,5 @@ USE_RET int64_t stream_lastclock(struct stream *stream);
|
||||
void stream_allow_unsorted(struct stream *stream);
|
||||
void stream_data_set(struct stream *stream, void *data);
|
||||
USE_RET void *stream_data_get(struct stream *stream);
|
||||
USE_RET JSON_Object *stream_metadata(struct stream *stream);
|
||||
|
||||
#endif /* STREAM_H */
|
||||
|
||||
133
src/emu/system.c
133
src/emu/system.c
@ -11,6 +11,7 @@
|
||||
#include "cpu.h"
|
||||
#include "emu_args.h"
|
||||
#include "loom.h"
|
||||
#include "metadata.h"
|
||||
#include "proc.h"
|
||||
#include "pv/prf.h"
|
||||
#include "pv/pvt.h"
|
||||
@ -23,11 +24,11 @@
|
||||
struct bay;
|
||||
|
||||
static struct thread *
|
||||
create_thread(struct proc *proc, struct stream *s)
|
||||
create_thread(struct proc *proc, const char *tracedir, const char *relpath)
|
||||
{
|
||||
int tid;
|
||||
if ((tid = thread_stream_get_tid(s)) < 0) {
|
||||
err("cannot get thread tid from stream: %s", s->relpath);
|
||||
if (thread_relpath_get_tid(relpath, &tid) != 0) {
|
||||
err("cannot get thread tid from %s", relpath);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -44,13 +45,21 @@ create_thread(struct proc *proc, struct stream *s)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (thread_init_begin(thread, tid) != 0) {
|
||||
err("thread_init_begin failed: %s", s->relpath);
|
||||
if (thread_init_begin(thread, relpath) != 0) {
|
||||
err("cannot init thread");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (thread_load_metadata(thread, s) != 0) {
|
||||
err("thread_load_metadata failed: %s", s->relpath);
|
||||
/* Build metadata path */
|
||||
char mpath[PATH_MAX];
|
||||
if (snprintf(mpath, PATH_MAX, "%s/%s/thread.%d.json",
|
||||
tracedir, proc->id, tid) >= PATH_MAX) {
|
||||
err("path too long");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (metadata_load_thread(mpath, thread) != 0) {
|
||||
err("cannot load metadata from %s", mpath);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -63,17 +72,18 @@ create_thread(struct proc *proc, struct stream *s)
|
||||
}
|
||||
|
||||
static struct proc *
|
||||
create_proc(struct loom *loom, struct stream *s)
|
||||
create_proc(struct loom *loom, const char *tracedir, const char *relpath)
|
||||
{
|
||||
int pid = proc_stream_get_pid(s);
|
||||
if (pid < 0) {
|
||||
err("cannot get proc pid from stream: %s", s->relpath);
|
||||
int pid;
|
||||
if (proc_relpath_get_pid(relpath, &pid) != 0) {
|
||||
err("cannot get proc pid from %s", relpath);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
struct proc *proc = loom_find_proc(loom, pid);
|
||||
if (proc == NULL) {
|
||||
/* Create a new process */
|
||||
|
||||
if (proc != NULL)
|
||||
return proc;
|
||||
|
||||
proc = malloc(sizeof(struct proc));
|
||||
|
||||
@ -82,8 +92,23 @@ create_proc(struct loom *loom, struct stream *s)
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (proc_init_begin(proc, pid) != 0) {
|
||||
err("proc_init_begin failed: %s", s->relpath);
|
||||
if (proc_init_begin(proc, relpath) != 0) {
|
||||
err("proc_init_begin failed");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Build metadata path */
|
||||
char mpath[PATH_MAX];
|
||||
|
||||
if (snprintf(mpath, PATH_MAX, "%s/%s/metadata.json",
|
||||
tracedir, proc->id) >= PATH_MAX) {
|
||||
err("path too long");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Load metadata too */
|
||||
if (metadata_load_proc(mpath, loom, proc) != 0) {
|
||||
err("cannot load metadata from %s", mpath);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -91,13 +116,6 @@ create_proc(struct loom *loom, struct stream *s)
|
||||
err("loom_add_proc failed");
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* The appid is populated from the metadata */
|
||||
if (proc_load_metadata(proc, s) != 0) {
|
||||
err("proc_load_metadata failed");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return proc;
|
||||
}
|
||||
@ -113,11 +131,16 @@ find_loom(struct system *sys, const char *id)
|
||||
}
|
||||
|
||||
static struct loom *
|
||||
create_loom(struct system *sys, struct stream *s)
|
||||
create_loom(struct system *sys, const char *relpath)
|
||||
{
|
||||
const char *name = loom_name(s);
|
||||
if (name == NULL) {
|
||||
err("loom_name failed");
|
||||
char name[PATH_MAX];
|
||||
if (snprintf(name, PATH_MAX, "%s", relpath) >= PATH_MAX) {
|
||||
err("path too long: %s", relpath);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (strtok(name, "/") == NULL) {
|
||||
err("cannot find first '/': %s", relpath);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
@ -140,11 +163,6 @@ create_loom(struct system *sys, struct stream *s)
|
||||
sys->nlooms++;
|
||||
}
|
||||
|
||||
if (loom_load_metadata(loom, s) != 0) {
|
||||
err("loom_load_metadata failed for stream: %s", s->relpath);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return loom;
|
||||
}
|
||||
|
||||
@ -202,33 +220,11 @@ report_libovni_version(struct system *sys)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
is_thread_stream(struct stream *s)
|
||||
{
|
||||
JSON_Object *meta = stream_metadata(s);
|
||||
if (meta == NULL) {
|
||||
err("no metadata for stream: %s", s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* All streams must have a ovni.part attribute */
|
||||
const char *part_type = json_object_dotget_string(meta, "ovni.part");
|
||||
|
||||
if (part_type == NULL) {
|
||||
err("cannot get attribute ovni.part for stream: %s",
|
||||
s->relpath);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (strcmp(part_type, "thread") == 0)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
create_system(struct system *sys, struct trace *trace)
|
||||
{
|
||||
const char *dir = trace->tracedir;
|
||||
|
||||
/* Allocate the lpt map */
|
||||
sys->lpt = calloc((size_t) trace->nstreams, sizeof(struct lpt));
|
||||
if (sys->lpt == NULL) {
|
||||
@ -238,28 +234,25 @@ create_system(struct system *sys, struct trace *trace)
|
||||
|
||||
size_t i = 0;
|
||||
for (struct stream *s = trace->streams; s ; s = s->next) {
|
||||
int ok = is_thread_stream(s);
|
||||
if (ok < 0) {
|
||||
err("is_thread_stream failed");
|
||||
return -1;
|
||||
} else if (ok == 0) {
|
||||
if (!loom_matches(s->relpath)) {
|
||||
warn("ignoring unknown stream %s", s->relpath);
|
||||
continue;
|
||||
}
|
||||
|
||||
struct loom *loom = create_loom(sys, s);
|
||||
struct loom *loom = create_loom(sys, s->relpath);
|
||||
if (loom == NULL) {
|
||||
err("create_loom failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
struct proc *proc = create_proc(loom, s);
|
||||
/* Loads metadata too */
|
||||
struct proc *proc = create_proc(loom, dir, s->relpath);
|
||||
if (proc == NULL) {
|
||||
err("create_proc failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
struct thread *thread = create_thread(proc, s);
|
||||
struct thread *thread = create_thread(proc, dir, s->relpath);
|
||||
if (thread == NULL) {
|
||||
err("create_thread failed");
|
||||
return -1;
|
||||
@ -274,6 +267,14 @@ create_system(struct system *sys, struct trace *trace)
|
||||
stream_data_set(s, lpt);
|
||||
}
|
||||
|
||||
/* Ensure all looms have at least one CPU */
|
||||
for (struct loom *l = sys->looms; l; l = l->next) {
|
||||
if (l->ncpus == 0) {
|
||||
err("loom %s has no physical CPUs", l->id);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -551,12 +552,6 @@ set_sort_criteria(struct system *sys)
|
||||
int some_have = 0;
|
||||
int all_have = 1;
|
||||
for (struct loom *l = sys->looms; l; l = l->next) {
|
||||
/* Set the rank_min for later sorting */
|
||||
if (loom_set_rank_min(l) != 0) {
|
||||
err("loom_set_rank_min failed");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (l->rank_enabled)
|
||||
some_have = 1;
|
||||
else
|
||||
|
||||
@ -15,7 +15,6 @@
|
||||
#include "pv/prv.h"
|
||||
#include "pv/pvt.h"
|
||||
#include "recorder.h"
|
||||
#include "stream.h"
|
||||
#include "value.h"
|
||||
struct proc;
|
||||
|
||||
@ -60,37 +59,75 @@ static const struct pcf_value_label (*pcf_labels[TH_CHAN_MAX])[] = {
|
||||
[TH_CHAN_STATE] = &state_name,
|
||||
};
|
||||
|
||||
int
|
||||
thread_stream_get_tid(struct stream *s)
|
||||
static int
|
||||
get_tid(const char *id, int *tid)
|
||||
{
|
||||
JSON_Object *meta = stream_metadata(s);
|
||||
|
||||
double tid = json_object_dotget_number(meta, "ovni.tid");
|
||||
|
||||
/* Zero is used for errors, so forbidden for tid too */
|
||||
if (tid == 0) {
|
||||
err("cannot get attribute ovni.tid for stream: %s",
|
||||
s->relpath);
|
||||
/* The id must be like "loom.host01.123/proc.345/thread.567" */
|
||||
if (path_count(id, '/') != 2) {
|
||||
err("proc id can only contain two '/': %s", id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return (int) tid;
|
||||
/* Get the thread.567 part */
|
||||
const char *thname;
|
||||
if (path_strip(id, 2, &thname) != 0) {
|
||||
err("cannot get thread name");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Ensure the prefix is ok */
|
||||
const char prefix[] = "thread.";
|
||||
if (!path_has_prefix(thname, prefix)) {
|
||||
err("thread name must start with '%s': %s", prefix, thname);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Get the 567 part */
|
||||
const char *tidstr;
|
||||
if (path_next(thname, '.', &tidstr) != 0) {
|
||||
err("cannot find thread dot in '%s'", id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
char *endptr;
|
||||
errno = 0;
|
||||
*tid = (int) strtol(tidstr, &endptr, 10);
|
||||
if (errno != 0) {
|
||||
err("strtol failed for '%s':", tidstr);
|
||||
return -1;
|
||||
}
|
||||
if (endptr == tidstr) {
|
||||
err("no digits in tid string '%s'", tidstr);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
thread_init_begin(struct thread *thread, int tid)
|
||||
thread_relpath_get_tid(const char *relpath, int *tid)
|
||||
{
|
||||
return get_tid(relpath, tid);
|
||||
}
|
||||
|
||||
int
|
||||
thread_init_begin(struct thread *thread, const char *relpath)
|
||||
{
|
||||
memset(thread, 0, sizeof(struct thread));
|
||||
|
||||
thread->state = TH_ST_UNKNOWN;
|
||||
thread->gindex = -1;
|
||||
thread->tid = tid;
|
||||
|
||||
if (snprintf(thread->id, PATH_MAX, "thread.%d", tid) >= PATH_MAX) {
|
||||
if (snprintf(thread->id, PATH_MAX, "%s", relpath) >= PATH_MAX) {
|
||||
err("relpath too long");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (get_tid(thread->id, &thread->tid) != 0) {
|
||||
err("cannot parse thread tid");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -408,19 +445,20 @@ thread_migrate_cpu(struct thread *th, struct cpu *cpu)
|
||||
}
|
||||
|
||||
int
|
||||
thread_load_metadata(struct thread *thread, struct stream *s)
|
||||
thread_load_metadata(struct thread *thread, JSON_Object *meta)
|
||||
{
|
||||
JSON_Object *meta = stream_metadata(s);
|
||||
if (meta == NULL) {
|
||||
err("metadata is null");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (thread->meta != NULL) {
|
||||
err("thread %s already loaded metadata", thread->id);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (json_object_dotget_number(meta, "ovni.finished") != 1) {
|
||||
err("missing ovni.finished: %s", s->relpath);
|
||||
return -1;
|
||||
}
|
||||
if (json_object_dotget_number(meta, "ovni.finished") != 1)
|
||||
warn("thread didn't finish properly: %s", thread->id);
|
||||
|
||||
thread->meta = meta;
|
||||
|
||||
|
||||
@ -20,7 +20,6 @@ struct pcf;
|
||||
struct proc;
|
||||
struct recorder;
|
||||
struct value;
|
||||
struct stream;
|
||||
|
||||
/* Emulated thread runtime status */
|
||||
enum thread_state {
|
||||
@ -83,10 +82,10 @@ struct thread {
|
||||
UT_hash_handle hh; /* threads in the process */
|
||||
};
|
||||
|
||||
USE_RET int thread_stream_get_tid(struct stream *s);
|
||||
USE_RET int thread_init_begin(struct thread *thread, int tid);
|
||||
USE_RET int thread_relpath_get_tid(const char *relpath, int *tid);
|
||||
USE_RET int thread_init_begin(struct thread *thread, const char *relpath);
|
||||
USE_RET int thread_init_end(struct thread *thread);
|
||||
USE_RET int thread_load_metadata(struct thread *thread, struct stream *s);
|
||||
USE_RET int thread_load_metadata(struct thread *thread, JSON_Object *meta);
|
||||
USE_RET int thread_set_state(struct thread *th, enum thread_state state);
|
||||
USE_RET int thread_set_cpu(struct thread *th, struct cpu *cpu);
|
||||
USE_RET int thread_unset_cpu(struct thread *th);
|
||||
|
||||
@ -27,7 +27,7 @@ add_stream(struct trace *trace, struct stream *stream)
|
||||
}
|
||||
|
||||
static int
|
||||
load_stream(struct trace *trace, const char *json_path)
|
||||
load_stream(struct trace *trace, const char *path)
|
||||
{
|
||||
struct stream *stream = calloc(1, sizeof(struct stream));
|
||||
|
||||
@ -36,14 +36,6 @@ load_stream(struct trace *trace, const char *json_path)
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* The json_path must end in .../stream.json, so remove it */
|
||||
char path[PATH_MAX];
|
||||
if (path_copy(path, json_path) != 0) {
|
||||
err("path_copy failed");
|
||||
return -1;
|
||||
}
|
||||
path_dirname(path);
|
||||
|
||||
int offset = (int) strlen(trace->tracedir);
|
||||
const char *relpath = path + offset;
|
||||
|
||||
@ -61,16 +53,46 @@ load_stream(struct trace *trace, const char *json_path)
|
||||
}
|
||||
|
||||
static int
|
||||
is_stream(const char *fpath)
|
||||
has_suffix(const char *str, const char *suffix)
|
||||
{
|
||||
const char *filename = path_filename(fpath);
|
||||
if (!str || !suffix)
|
||||
return 0;
|
||||
|
||||
if (strcmp(filename, "stream.json") == 0)
|
||||
int lenstr = (int) strlen(str);
|
||||
int lensuffix = (int) strlen(suffix);
|
||||
|
||||
if (lensuffix > lenstr)
|
||||
return 0;
|
||||
|
||||
const char *p = str + lenstr - lensuffix;
|
||||
if (strncmp(p, suffix, (size_t) lensuffix) == 0)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
is_stream(const char *fpath)
|
||||
{
|
||||
if (has_suffix(fpath, OVNI_STREAM_EXT))
|
||||
return 1;
|
||||
|
||||
/* For compatibility load the old streams too */
|
||||
const char *filename = path_filename(fpath);
|
||||
|
||||
const char prefix[] = "thread.";
|
||||
if (!path_has_prefix(filename, prefix))
|
||||
return 0;
|
||||
|
||||
const char *tid = filename + strlen(prefix);
|
||||
for (int i = 0; tid[i]; i++) {
|
||||
if (tid[i] < '0' || tid[i] > '9')
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
cb_nftw(const char *fpath, const struct stat *sb,
|
||||
int typeflag, struct FTW *ftwbuf)
|
||||
@ -105,10 +127,6 @@ trace_load(struct trace *trace, const char *tracedir)
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Remove trailing slashes from tracedir */
|
||||
path_remove_trailing(trace->tracedir);
|
||||
tracedir = trace->tracedir;
|
||||
|
||||
/* Try to open the directory to catch permission errors */
|
||||
DIR *dir = opendir(tracedir);
|
||||
if (dir == NULL) {
|
||||
|
||||
334
src/rt/ovni.c
334
src/rt/ovni.c
@ -5,8 +5,6 @@
|
||||
#include <fcntl.h>
|
||||
#include <inttypes.h>
|
||||
#include <limits.h>
|
||||
#include <stdatomic.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
@ -19,21 +17,6 @@
|
||||
#include "ovni.h"
|
||||
#include "parson.h"
|
||||
#include "version.h"
|
||||
#include "utlist.h"
|
||||
|
||||
enum {
|
||||
ST_UNINIT = 0,
|
||||
ST_INIT,
|
||||
ST_READY,
|
||||
ST_GONE,
|
||||
};
|
||||
|
||||
struct ovni_rcpu {
|
||||
int index;
|
||||
int phyid;
|
||||
struct ovni_rcpu *next;
|
||||
struct ovni_rcpu *prev;
|
||||
};
|
||||
|
||||
/* State of each thread on runtime */
|
||||
struct ovni_rthread {
|
||||
@ -52,16 +35,6 @@ struct ovni_rthread {
|
||||
/* Buffer to write events */
|
||||
uint8_t *evbuf;
|
||||
|
||||
struct ovni_rcpu *cpus;
|
||||
|
||||
int rank_set;
|
||||
int rank;
|
||||
int nranks;
|
||||
|
||||
/* Where the stream dir is finally copied */
|
||||
char thdir_final[PATH_MAX];
|
||||
char thdir[PATH_MAX];
|
||||
|
||||
JSON_Value *meta;
|
||||
};
|
||||
|
||||
@ -81,9 +54,10 @@ struct ovni_rproc {
|
||||
int app;
|
||||
int pid;
|
||||
char loom[OVNI_MAX_HOSTNAME];
|
||||
int ncpus;
|
||||
clockid_t clockid;
|
||||
|
||||
atomic_int st;
|
||||
int ready;
|
||||
|
||||
JSON_Value *meta;
|
||||
};
|
||||
@ -130,40 +104,17 @@ void ovni_version_check_str(const char *version)
|
||||
/* Ignore the patch number */
|
||||
}
|
||||
|
||||
/* Create dir $procdir/thread.$tid and return it in path. */
|
||||
static void
|
||||
mkdir_thread(char *path, const char *procdir, int tid)
|
||||
{
|
||||
if (snprintf(path, PATH_MAX, "%s/thread.%d",
|
||||
procdir, tid) >= PATH_MAX) {
|
||||
die("path too long: %s/thread.%d", procdir, tid);
|
||||
}
|
||||
|
||||
if (mkpath(path, 0755, /* subdir */ 1))
|
||||
die("mkpath %s failed:", path);
|
||||
}
|
||||
|
||||
static void
|
||||
create_thread_dir(int tid)
|
||||
{
|
||||
/* The procdir must have been created earlier */
|
||||
mkdir_thread(rthread.thdir, rproc.procdir, tid);
|
||||
if (rproc.move_to_final)
|
||||
mkdir_thread(rthread.thdir_final, rproc.procdir_final, tid);
|
||||
}
|
||||
|
||||
static void
|
||||
create_trace_stream(void)
|
||||
{
|
||||
char path[PATH_MAX];
|
||||
|
||||
int written = snprintf(path, PATH_MAX, "%s/thread.%d/stream.obs",
|
||||
rproc.procdir, rthread.tid);
|
||||
int written = snprintf(path, PATH_MAX, "%s/thread.%d%s",
|
||||
rproc.procdir, rthread.tid, OVNI_STREAM_EXT);
|
||||
|
||||
if (written >= PATH_MAX) {
|
||||
die("path too long: %s/thread.%d/stream.obs",
|
||||
rproc.procdir, rthread.tid);
|
||||
}
|
||||
if (written >= PATH_MAX)
|
||||
die("thread trace path too long: %s/thread.%d%s",
|
||||
rproc.procdir, rthread.tid, OVNI_STREAM_EXT);
|
||||
|
||||
rthread.streamfd = open(path, O_WRONLY | O_CREAT, 0644);
|
||||
|
||||
@ -171,6 +122,31 @@ create_trace_stream(void)
|
||||
die("open %s failed:", path);
|
||||
}
|
||||
|
||||
static void
|
||||
proc_metadata_init(struct ovni_rproc *proc)
|
||||
{
|
||||
proc->meta = json_value_init_object();
|
||||
|
||||
if (proc->meta == NULL)
|
||||
die("failed to create metadata JSON object");
|
||||
}
|
||||
|
||||
static void
|
||||
proc_metadata_store(JSON_Value *meta, const char *procdir)
|
||||
{
|
||||
char path[PATH_MAX];
|
||||
|
||||
if (meta == NULL)
|
||||
die("process metadata not initialized");
|
||||
|
||||
if (snprintf(path, PATH_MAX, "%s/metadata.json", procdir) >= PATH_MAX)
|
||||
die("metadata path too long: %s/metadata.json",
|
||||
procdir);
|
||||
|
||||
if (json_serialize_to_file_pretty(meta, path) != JSONSuccess)
|
||||
die("failed to write process metadata");
|
||||
}
|
||||
|
||||
void
|
||||
ovni_add_cpu(int index, int phyid)
|
||||
{
|
||||
@ -180,34 +156,101 @@ ovni_add_cpu(int index, int phyid)
|
||||
if (phyid < 0)
|
||||
die("cannot use negative CPU id %d", phyid);
|
||||
|
||||
if (atomic_load(&rproc.st) != ST_READY)
|
||||
die("process not ready");
|
||||
if (!rproc.ready)
|
||||
die("process not yet initialized");
|
||||
|
||||
if (!rthread.ready)
|
||||
die("thread not yet initialized");
|
||||
if (rproc.meta == NULL)
|
||||
die("metadata not initialized");
|
||||
|
||||
struct ovni_rcpu *cpu = malloc(sizeof(*cpu));
|
||||
JSON_Object *meta = json_value_get_object(rproc.meta);
|
||||
|
||||
if (meta == NULL)
|
||||
die("json_value_get_object() failed");
|
||||
|
||||
int first_time = 0;
|
||||
|
||||
/* Find the CPU array and create it if needed */
|
||||
JSON_Array *cpuarray = json_object_dotget_array(meta, "cpus");
|
||||
|
||||
if (cpuarray == NULL) {
|
||||
JSON_Value *value = json_value_init_array();
|
||||
if (value == NULL)
|
||||
die("json_value_init_array() failed");
|
||||
|
||||
cpuarray = json_array(value);
|
||||
if (cpuarray == NULL)
|
||||
die("json_array() failed");
|
||||
|
||||
first_time = 1;
|
||||
}
|
||||
|
||||
JSON_Value *valcpu = json_value_init_object();
|
||||
if (valcpu == NULL)
|
||||
die("json_value_init_object() failed");
|
||||
|
||||
JSON_Object *cpu = json_object(valcpu);
|
||||
if (cpu == NULL)
|
||||
die("malloc failed:");
|
||||
die("json_object() failed");
|
||||
|
||||
cpu->index = index;
|
||||
cpu->phyid = phyid;
|
||||
if (json_object_set_number(cpu, "index", index) != 0)
|
||||
die("json_object_set_number() failed");
|
||||
|
||||
DL_APPEND(rthread.cpus, cpu);
|
||||
if (json_object_set_number(cpu, "phyid", phyid) != 0)
|
||||
die("json_object_set_number() failed");
|
||||
|
||||
if (json_array_append_value(cpuarray, valcpu) != 0)
|
||||
die("json_array_append_value() failed");
|
||||
|
||||
if (first_time) {
|
||||
JSON_Value *value = json_array_get_wrapping_value(cpuarray);
|
||||
if (value == NULL)
|
||||
die("json_array_get_wrapping_value() failed");
|
||||
|
||||
if (json_object_set_value(meta, "cpus", value) != 0)
|
||||
die("json_object_set_value failed");
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
proc_set_app(int appid)
|
||||
{
|
||||
JSON_Object *meta = json_value_get_object(rproc.meta);
|
||||
|
||||
if (meta == NULL)
|
||||
die("json_value_get_object failed");
|
||||
|
||||
if (json_object_set_number(meta, "app_id", appid) != 0)
|
||||
die("json_object_set_number for app_id failed");
|
||||
}
|
||||
|
||||
static void
|
||||
proc_set_version(void)
|
||||
{
|
||||
JSON_Object *meta = json_value_get_object(rproc.meta);
|
||||
|
||||
if (meta == NULL)
|
||||
die("json_value_get_object failed");
|
||||
|
||||
if (json_object_set_number(meta, "version", OVNI_METADATA_VERSION) != 0)
|
||||
die("json_object_set_number for version failed");
|
||||
}
|
||||
|
||||
void
|
||||
ovni_proc_set_rank(int rank, int nranks)
|
||||
{
|
||||
if (atomic_load(&rproc.st) != ST_READY)
|
||||
die("process not ready");
|
||||
if (!rproc.ready)
|
||||
die("process not yet initialized");
|
||||
|
||||
if (!rthread.ready)
|
||||
die("thread not yet initialized");
|
||||
JSON_Object *meta = json_value_get_object(rproc.meta);
|
||||
|
||||
rthread.rank_set = 1;
|
||||
rthread.rank = rank;
|
||||
rthread.nranks = nranks;
|
||||
if (meta == NULL)
|
||||
die("json_value_get_object failed");
|
||||
|
||||
if (json_object_set_number(meta, "rank", rank) != 0)
|
||||
die("json_object_set_number for rank failed");
|
||||
|
||||
if (json_object_set_number(meta, "nranks", nranks) != 0)
|
||||
die("json_object_set_number for nranks failed");
|
||||
}
|
||||
|
||||
/* Create $tracedir/loom.$loom/proc.$pid and return it in path. */
|
||||
@ -249,19 +292,10 @@ create_proc_dir(const char *loom, int pid)
|
||||
void
|
||||
ovni_proc_init(int app, const char *loom, int pid)
|
||||
{
|
||||
/* Protect against two threads calling at the same time */
|
||||
int st = ST_UNINIT;
|
||||
bool was_uninit = atomic_compare_exchange_strong(&rproc.st,
|
||||
&st, ST_INIT);
|
||||
|
||||
if (!was_uninit) {
|
||||
if (st == ST_INIT)
|
||||
die("pid %d already being initialized", pid);
|
||||
else if (st == ST_READY)
|
||||
if (rproc.ready)
|
||||
die("pid %d already initialized", pid);
|
||||
else if (st == ST_GONE)
|
||||
die("pid %d has finished, cannot init again", pid);
|
||||
}
|
||||
|
||||
memset(&rproc, 0, sizeof(rproc));
|
||||
|
||||
if (strlen(loom) >= OVNI_MAX_HOSTNAME)
|
||||
die("loom name too long: %s", loom);
|
||||
@ -273,13 +307,17 @@ ovni_proc_init(int app, const char *loom, int pid)
|
||||
|
||||
create_proc_dir(loom, pid);
|
||||
|
||||
atomic_store(&rproc.st, ST_READY);
|
||||
proc_metadata_init(&rproc);
|
||||
|
||||
rproc.ready = 1;
|
||||
|
||||
proc_set_version();
|
||||
proc_set_app(app);
|
||||
}
|
||||
|
||||
static int
|
||||
move_thread_to_final(const char *src, const char *dst)
|
||||
{
|
||||
info("moving src=%s to dst=%s", src, dst);
|
||||
char buffer[1024];
|
||||
|
||||
FILE *infile = fopen(src, "r");
|
||||
@ -312,38 +350,38 @@ move_thread_to_final(const char *src, const char *dst)
|
||||
}
|
||||
|
||||
static void
|
||||
move_thdir_to_final(const char *thdir, const char *thdir_final)
|
||||
move_procdir_to_final(const char *procdir, const char *procdir_final)
|
||||
{
|
||||
DIR *dir;
|
||||
int ret = 0;
|
||||
|
||||
if ((dir = opendir(thdir)) == NULL) {
|
||||
err("opendir %s failed:", thdir);
|
||||
if ((dir = opendir(procdir)) == NULL) {
|
||||
err("opendir %s failed:", procdir);
|
||||
return;
|
||||
}
|
||||
|
||||
struct dirent *dirent;
|
||||
const char *prefix = "stream.";
|
||||
const char *prefix = "thread.";
|
||||
while ((dirent = readdir(dir)) != NULL) {
|
||||
/* It should only contain stream.* directories, skip others */
|
||||
/* It should only contain thread.* directories, skip others */
|
||||
if (strncmp(dirent->d_name, prefix, strlen(prefix)) != 0)
|
||||
continue;
|
||||
|
||||
char thread[PATH_MAX];
|
||||
if (snprintf(thread, PATH_MAX, "%s/%s", thdir,
|
||||
if (snprintf(thread, PATH_MAX, "%s/%s", procdir,
|
||||
dirent->d_name)
|
||||
>= PATH_MAX) {
|
||||
err("snprintf: path too large: %s/%s", thdir,
|
||||
err("snprintf: path too large: %s/%s", procdir,
|
||||
dirent->d_name);
|
||||
ret = 1;
|
||||
continue;
|
||||
}
|
||||
|
||||
char thread_final[PATH_MAX];
|
||||
if (snprintf(thread_final, PATH_MAX, "%s/%s", thdir_final,
|
||||
if (snprintf(thread_final, PATH_MAX, "%s/%s", procdir_final,
|
||||
dirent->d_name)
|
||||
>= PATH_MAX) {
|
||||
err("snprintf: path too large: %s/%s", thdir_final,
|
||||
err("snprintf: path too large: %s/%s", procdir_final,
|
||||
dirent->d_name);
|
||||
ret = 1;
|
||||
continue;
|
||||
@ -357,7 +395,7 @@ move_thdir_to_final(const char *thdir, const char *thdir_final)
|
||||
|
||||
/* Warn the user, but we cannot do much at this point */
|
||||
if (ret)
|
||||
err("errors occurred when moving the thread dir to %s", thdir_final);
|
||||
err("errors occurred when moving the trace to %s", procdir_final);
|
||||
}
|
||||
|
||||
static void
|
||||
@ -371,18 +409,20 @@ try_clean_dir(const char *dir)
|
||||
void
|
||||
ovni_proc_fini(void)
|
||||
{
|
||||
/* Protect against two threads calling at the same time */
|
||||
int st = ST_READY;
|
||||
bool was_ready = atomic_compare_exchange_strong(&rproc.st,
|
||||
&st, ST_GONE);
|
||||
if (!rproc.ready)
|
||||
die("process not initialized");
|
||||
|
||||
if (!was_ready)
|
||||
die("process not ready");
|
||||
/* Mark the process no longer ready */
|
||||
rproc.ready = 0;
|
||||
|
||||
if (rproc.move_to_final) {
|
||||
proc_metadata_store(rproc.meta, rproc.procdir_final);
|
||||
move_procdir_to_final(rproc.procdir, rproc.procdir_final);
|
||||
try_clean_dir(rproc.procdir);
|
||||
try_clean_dir(rproc.loomdir);
|
||||
try_clean_dir(rproc.tmpdir);
|
||||
} else {
|
||||
proc_metadata_store(rproc.meta, rproc.procdir);
|
||||
}
|
||||
}
|
||||
|
||||
@ -425,11 +465,11 @@ static void
|
||||
thread_metadata_store(void)
|
||||
{
|
||||
char path[PATH_MAX];
|
||||
int written = snprintf(path, PATH_MAX, "%s/thread.%d/stream.json",
|
||||
int written = snprintf(path, PATH_MAX, "%s/thread.%d.json",
|
||||
rproc.procdir, rthread.tid);
|
||||
|
||||
if (written >= PATH_MAX)
|
||||
die("thread trace path too long: %s/thread.%d/stream.json",
|
||||
die("thread trace path too long: %s/thread.%d.json",
|
||||
rproc.procdir, rthread.tid);
|
||||
|
||||
if (json_serialize_to_file_pretty(rthread.meta, path) != JSONSuccess)
|
||||
@ -490,21 +530,6 @@ thread_metadata_populate(void)
|
||||
|
||||
if (json_object_dotset_string(meta, "ovni.lib.commit", OVNI_GIT_COMMIT) != 0)
|
||||
die("json_object_dotset_string failed");
|
||||
|
||||
if (json_object_dotset_string(meta, "ovni.part", "thread") != 0)
|
||||
die("json_object_dotset_string failed");
|
||||
|
||||
if (json_object_dotset_number(meta, "ovni.tid", (double) rthread.tid) != 0)
|
||||
die("json_object_dotset_number failed");
|
||||
|
||||
if (json_object_dotset_number(meta, "ovni.pid", (double) rproc.pid) != 0)
|
||||
die("json_object_dotset_number failed");
|
||||
|
||||
if (json_object_dotset_string(meta, "ovni.loom", rproc.loom) != 0)
|
||||
die("json_object_dotset_string failed");
|
||||
|
||||
if (json_object_dotset_number(meta, "ovni.app_id", rproc.app) != 0)
|
||||
die("json_object_dotset_number for ovni.app_id failed");
|
||||
}
|
||||
|
||||
static void
|
||||
@ -535,8 +560,8 @@ ovni_thread_init(pid_t tid)
|
||||
if (tid == 0)
|
||||
die("cannot use tid=%d", tid);
|
||||
|
||||
if (atomic_load(&rproc.st) != ST_READY)
|
||||
die("process not ready");
|
||||
if (!rproc.ready)
|
||||
die("process not yet initialized");
|
||||
|
||||
memset(&rthread, 0, sizeof(rthread));
|
||||
|
||||
@ -547,59 +572,12 @@ ovni_thread_init(pid_t tid)
|
||||
if (rthread.evbuf == NULL)
|
||||
die("malloc failed:");
|
||||
|
||||
create_thread_dir(tid);
|
||||
create_trace_stream();
|
||||
write_stream_header();
|
||||
|
||||
thread_metadata_init();
|
||||
|
||||
rthread.ready = 1;
|
||||
|
||||
ovni_thread_require("ovni", OVNI_MODEL_VERSION);
|
||||
}
|
||||
|
||||
static void
|
||||
set_thread_rank(JSON_Object *meta)
|
||||
{
|
||||
if (json_object_dotset_number(meta, "ovni.rank", rthread.rank) != 0)
|
||||
die("json_object_set_number for rank failed");
|
||||
|
||||
if (json_object_dotset_number(meta, "ovni.nranks", rthread.nranks) != 0)
|
||||
die("json_object_set_number for nranks failed");
|
||||
}
|
||||
|
||||
static void
|
||||
set_thread_cpus(JSON_Object *meta)
|
||||
{
|
||||
JSON_Value *value = json_value_init_array();
|
||||
if (value == NULL)
|
||||
die("json_value_init_array() failed");
|
||||
|
||||
JSON_Array *cpuarray = json_array(value);
|
||||
if (cpuarray == NULL)
|
||||
die("json_array() failed");
|
||||
|
||||
for (struct ovni_rcpu *c = rthread.cpus; c; c = c->next) {
|
||||
JSON_Value *valcpu = json_value_init_object();
|
||||
if (valcpu == NULL)
|
||||
die("json_value_init_object() failed");
|
||||
|
||||
JSON_Object *cpu = json_object(valcpu);
|
||||
if (cpu == NULL)
|
||||
die("json_object() failed");
|
||||
|
||||
if (json_object_set_number(cpu, "index", c->index) != 0)
|
||||
die("json_object_set_number() failed");
|
||||
|
||||
if (json_object_set_number(cpu, "phyid", c->phyid) != 0)
|
||||
die("json_object_set_number() failed");
|
||||
|
||||
if (json_array_append_value(cpuarray, valcpu) != 0)
|
||||
die("json_array_append_value() failed");
|
||||
}
|
||||
|
||||
if (json_object_dotset_value(meta, "ovni.loom_cpus", value) != 0)
|
||||
die("json_object_dotset_value failed");
|
||||
}
|
||||
|
||||
void
|
||||
@ -616,14 +594,6 @@ ovni_thread_free(void)
|
||||
if (meta == NULL)
|
||||
die("json_value_get_object failed");
|
||||
|
||||
if (rthread.rank_set)
|
||||
set_thread_rank(meta);
|
||||
|
||||
/* It can happen there are no CPUs defined if there is another
|
||||
* process in the loom that defines them. */
|
||||
if (rthread.cpus)
|
||||
set_thread_cpus(meta);
|
||||
|
||||
/* Mark it finished so we can detect partial streams */
|
||||
if (json_object_dotset_number(meta, "ovni.finished", 1) != 0)
|
||||
die("json_object_dotset_string failed");
|
||||
@ -636,14 +606,8 @@ ovni_thread_free(void)
|
||||
close(rthread.streamfd);
|
||||
rthread.streamfd = -1;
|
||||
|
||||
if (rproc.move_to_final) {
|
||||
/* The dir rthread.thdir_final must exist in the FS */
|
||||
move_thdir_to_final(rthread.thdir, rthread.thdir_final);
|
||||
try_clean_dir(rthread.thdir);
|
||||
}
|
||||
|
||||
rthread.finished = 1;
|
||||
rthread.ready = 0;
|
||||
rthread.finished = 1;
|
||||
}
|
||||
|
||||
int
|
||||
@ -770,8 +734,8 @@ ovni_flush(void)
|
||||
if (!rthread.ready)
|
||||
die("thread is not initialized");
|
||||
|
||||
if (atomic_load(&rproc.st) != ST_READY)
|
||||
die("process not ready");
|
||||
if (!rproc.ready)
|
||||
die("process is not initialized");
|
||||
|
||||
ovni_ev_set_clock(&pre, ovni_clock_now());
|
||||
ovni_ev_set_mcv(&pre, "OF[");
|
||||
|
||||
@ -102,10 +102,8 @@ instr_start(int rank, int nranks)
|
||||
|
||||
ovni_version_check();
|
||||
ovni_proc_init(1, rankname, getpid());
|
||||
ovni_thread_init(get_tid());
|
||||
|
||||
if (nranks > 0)
|
||||
ovni_proc_set_rank(rank, nranks);
|
||||
ovni_thread_init(get_tid());
|
||||
|
||||
/* All ranks inform CPUs */
|
||||
for (int i = 0; i < nranks; i++)
|
||||
|
||||
@ -27,12 +27,11 @@ main(void)
|
||||
int app = rank / N;
|
||||
|
||||
char loom[128];
|
||||
if (snprintf(loom, 128, "node0.%04d", app) >= 128)
|
||||
if (snprintf(loom, 128, "loom.%04d", app) >= 128)
|
||||
die("snprintf failed");
|
||||
|
||||
ovni_proc_init(1 + app, loom, getpid());
|
||||
ovni_proc_set_rank(rank, nranks);
|
||||
ovni_thread_init(get_tid());
|
||||
|
||||
/* Leader of the segment, must emit CPUs */
|
||||
if (rank % N == 0) {
|
||||
@ -40,13 +39,13 @@ main(void)
|
||||
for (int i = 0; i < N; i++) {
|
||||
cpus[i] = app * N + i;
|
||||
ovni_add_cpu(i, cpus[i]);
|
||||
info("adding cpu %d to rank %d", i, rank);
|
||||
}
|
||||
}
|
||||
|
||||
int nlooms = nranks / N;
|
||||
int lcpu = rank % N;
|
||||
|
||||
ovni_thread_init(get_tid());
|
||||
instr_require("ovni");
|
||||
instr_nosv_init();
|
||||
instr_thread_execute(lcpu, -1, 0);
|
||||
|
||||
@ -11,7 +11,6 @@ test_emu(sort-first-and-full-ring.c SORT
|
||||
SHOULD_FAIL REGEX "cannot find a event previous to clock")
|
||||
test_emu(burst-stats.c REGEX "burst stats: median/avg/max = 33/ 33/ 33 ns")
|
||||
test_emu(mp-simple.c MP)
|
||||
test_emu(merge-cpus-loom.c MP)
|
||||
test_emu(version-good.c)
|
||||
test_emu(version-bad.c SHOULD_FAIL REGEX "incompatible .* version")
|
||||
test_emu(clockgate.c MP SHOULD_FAIL REGEX "detected large clock gate")
|
||||
@ -19,11 +18,11 @@ test_emu(no-cpus.c SHOULD_FAIL REGEX "loom .* has no physical CPUs")
|
||||
test_emu(sort-cpus-by-loom.c MP)
|
||||
test_emu(sort-cpus-by-rank.c MP)
|
||||
test_emu(tracedir-subdir.c MP DRIVER "tracedir-subdir.driver.sh")
|
||||
test_emu(empty-stream.c SHOULD_FAIL REGEX "missing ovni.finished")
|
||||
test_emu(empty-stream.c SHOULD_FAIL REGEX "model_ovni_finish: thread .* is not dead")
|
||||
test_emu(require-bad-version.c SHOULD_FAIL REGEX "unsupported ovni model version (want 666.66.6, have .*)")
|
||||
test_emu(require-compat.c)
|
||||
test_emu(require-compat.c REGEX "loading trace in compatibility mode")
|
||||
test_emu(require-repeated.c)
|
||||
test_emu(thread-crash.c SHOULD_FAIL REGEX "missing ovni.finished")
|
||||
test_emu(thread-crash.c SHOULD_FAIL REGEX "incomplete stream")
|
||||
test_emu(thread-free-isready.c)
|
||||
test_emu(flush-tmpdir.c MP DRIVER "flush-tmpdir.driver.sh")
|
||||
test_emu(tmpdir-metadata.c MP DRIVER "tmpdir-metadata.driver.sh")
|
||||
|
||||
@ -37,8 +37,8 @@ start_delayed(int rank, int nranks)
|
||||
|
||||
ovni_version_check();
|
||||
ovni_proc_init(1, rankname, getpid());
|
||||
ovni_thread_init(get_tid());
|
||||
ovni_proc_set_rank(rank, nranks);
|
||||
ovni_thread_init(get_tid());
|
||||
instr_require("ovni");
|
||||
|
||||
/* All ranks inform CPUs */
|
||||
|
||||
@ -1,52 +0,0 @@
|
||||
/* Copyright (c) 2024 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include <stdlib.h>
|
||||
#include "compat.h"
|
||||
#include "instr.h"
|
||||
|
||||
/* Ensure we can emit CPUs from multiple threads of the same loom */
|
||||
|
||||
static inline void
|
||||
start(int rank, int nranks)
|
||||
{
|
||||
char hostname[OVNI_MAX_HOSTNAME];
|
||||
|
||||
if (gethostname(hostname, OVNI_MAX_HOSTNAME) != 0)
|
||||
die("gethostname failed");
|
||||
|
||||
ovni_version_check();
|
||||
|
||||
/* Only one loom */
|
||||
ovni_proc_init(1, hostname, getpid());
|
||||
ovni_thread_init(get_tid());
|
||||
ovni_proc_set_rank(rank, nranks);
|
||||
|
||||
/* Only emit a subset of CPUs up to the rank number */
|
||||
for (int i = 0; i <= rank; i++)
|
||||
ovni_add_cpu(i, i);
|
||||
|
||||
int curcpu = rank;
|
||||
|
||||
dbg("thread %d has cpu %d (ncpus=%d)",
|
||||
get_tid(), curcpu, nranks);
|
||||
|
||||
instr_require("ovni");
|
||||
instr_thread_execute(curcpu, -1, 0);
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
main(void)
|
||||
{
|
||||
int rank = atoi(getenv("OVNI_RANK"));
|
||||
int nranks = atoi(getenv("OVNI_NRANKS"));
|
||||
|
||||
start(rank, nranks);
|
||||
|
||||
sleep_us(50 * 1000);
|
||||
|
||||
instr_end();
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2023-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include <stdio.h>
|
||||
@ -35,7 +35,6 @@ main(void)
|
||||
for (int i = 0; i < N; i++)
|
||||
ovni_add_cpu(i, cpus[i]);
|
||||
|
||||
instr_require("ovni");
|
||||
instr_thread_execute(-1, -1, 0);
|
||||
|
||||
instr_end();
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2023-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include <stdio.h>
|
||||
@ -36,7 +36,6 @@ main(void)
|
||||
for (int i = 0; i < N; i++)
|
||||
ovni_add_cpu(i, cpus[i]);
|
||||
|
||||
instr_require("ovni");
|
||||
instr_thread_execute(-1, -1, 0);
|
||||
|
||||
instr_end();
|
||||
|
||||
@ -8,9 +8,9 @@ test_files() {
|
||||
test -e "$dst"
|
||||
test -e "$dst/loom.node.1"
|
||||
test -e "$dst/loom.node.1/proc.123"
|
||||
test -e "$dst/loom.node.1/proc.123/thread.123"
|
||||
test -e "$dst/loom.node.1/proc.123/thread.123/stream.json"
|
||||
test -e "$dst/loom.node.1/proc.123/thread.123/stream.obs"
|
||||
test -e "$dst/loom.node.1/proc.123/metadata.json"
|
||||
test -e "$dst/loom.node.1/proc.123/thread.123.json"
|
||||
test -e "$dst/loom.node.1/proc.123/thread.123.obs"
|
||||
}
|
||||
|
||||
test_no_files() {
|
||||
@ -18,9 +18,9 @@ test_no_files() {
|
||||
test '!' -e "$dst"
|
||||
test '!' -e "$dst/loom.node.1"
|
||||
test '!' -e "$dst/loom.node.1/proc.123"
|
||||
test '!' -e "$dst/loom.node.1/proc.123/thread.123"
|
||||
test '!' -e "$dst/loom.node.1/proc.123/thread.123/stream.json"
|
||||
test '!' -e "$dst/loom.node.1/proc.123/thread.123/stream.obs"
|
||||
test '!' -e "$dst/loom.node.1/proc.123/metadata.json"
|
||||
test '!' -e "$dst/loom.node.1/proc.123/thread.123.json"
|
||||
test '!' -e "$dst/loom.node.1/proc.123/thread.123.obs"
|
||||
}
|
||||
|
||||
# Test setting OVNI_TMPDIR
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
/* Spawn a task from an external thread that calls some nanos6
|
||||
@ -67,7 +67,7 @@ instr_thread_start(int32_t cpu, int32_t creator_tid, uint64_t tag)
|
||||
ovni_payload_add(&ev, (uint8_t *) &tag, sizeof(tag));
|
||||
ovni_ev_emit(&ev);
|
||||
|
||||
/* Flush the events to disk after creating the thread */
|
||||
/* Flush the events to disk before killing the thread */
|
||||
ovni_flush();
|
||||
}
|
||||
|
||||
@ -82,9 +82,6 @@ instr_thread_end(void)
|
||||
|
||||
/* Flush the events to disk before killing the thread */
|
||||
ovni_flush();
|
||||
|
||||
/* Finish the thread */
|
||||
ovni_thread_free();
|
||||
}
|
||||
|
||||
/* Call the nanos6_spawn_function from an external thread */
|
||||
|
||||
@ -17,6 +17,7 @@ unit_test(mux.c)
|
||||
unit_test(prv.c)
|
||||
unit_test(stream.c)
|
||||
unit_test(task.c)
|
||||
unit_test(thread.c)
|
||||
unit_test(value.c)
|
||||
unit_test(version.c)
|
||||
unit_test(path.c)
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include "emu/cpu.h"
|
||||
@ -27,16 +27,18 @@ test_oversubscription(void)
|
||||
|
||||
struct proc proc;
|
||||
|
||||
if (proc_init_begin(&proc, 1) != 0)
|
||||
if (proc_init_begin(&proc, "loom.0/proc.0") != 0)
|
||||
die("proc_init_begin failed");
|
||||
|
||||
proc.appid = 1;
|
||||
|
||||
proc_set_gindex(&proc, 0);
|
||||
|
||||
/* FIXME: We shouldn't need to recreate a full process to test the CPU
|
||||
* affinity rules */
|
||||
proc.metadata_loaded = 1;
|
||||
|
||||
struct thread th0, th1;
|
||||
|
||||
if (thread_init_begin(&th0, 1) != 0)
|
||||
if (thread_init_begin(&th0, "loom.0/proc.0/thread.0.obs") != 0)
|
||||
die("thread_init_begin failed");
|
||||
|
||||
thread_set_gindex(&th0, 0);
|
||||
@ -45,7 +47,7 @@ test_oversubscription(void)
|
||||
if (thread_init_end(&th0) != 0)
|
||||
die("thread_init_end failed");
|
||||
|
||||
if (thread_init_begin(&th1, 2) != 0)
|
||||
if (thread_init_begin(&th1, "loom.1/proc.1/thread.1.obs") != 0)
|
||||
die("thread_init_begin failed");
|
||||
|
||||
thread_set_gindex(&th1, 1);
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include "emu/loom.h"
|
||||
@ -8,17 +8,19 @@
|
||||
#include "emu/proc.h"
|
||||
#include "unittest.h"
|
||||
|
||||
char testloom[] = "node1";
|
||||
int testproc = 1;
|
||||
char testloom[] = "loom.0";
|
||||
char testproc[] = "loom.0/proc.1";
|
||||
|
||||
static void
|
||||
test_bad_name(struct loom *loom)
|
||||
{
|
||||
ERR(loom_init_begin(loom, "blah"));
|
||||
ERR(loom_init_begin(loom, "loom/blah"));
|
||||
ERR(loom_init_begin(loom, "loom.123/testloom"));
|
||||
ERR(loom_init_begin(loom, "loom.123/"));
|
||||
ERR(loom_init_begin(loom, "/loom.123"));
|
||||
ERR(loom_init_begin(loom, "./loom.123"));
|
||||
OK(loom_init_begin(loom, "loom.123"));
|
||||
OK(loom_init_begin(loom, "foo"));
|
||||
|
||||
err("ok");
|
||||
}
|
||||
@ -26,7 +28,7 @@ test_bad_name(struct loom *loom)
|
||||
static void
|
||||
test_hostname(struct loom *loom)
|
||||
{
|
||||
OK(loom_init_begin(loom, "node1.blah"));
|
||||
OK(loom_init_begin(loom, "loom.node1.blah"));
|
||||
|
||||
if (strcmp(loom->hostname, "node1") != 0)
|
||||
die("wrong hostname: %s", loom->hostname);
|
||||
@ -65,6 +67,7 @@ test_duplicate_procs(struct loom *loom)
|
||||
struct proc proc;
|
||||
OK(loom_init_begin(loom, testloom));
|
||||
OK(proc_init_begin(&proc, testproc));
|
||||
proc.metadata_loaded = 1;
|
||||
OK(loom_add_proc(loom, &proc));
|
||||
ERR(loom_add_proc(loom, &proc));
|
||||
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include <stdio.h>
|
||||
@ -11,27 +11,10 @@
|
||||
#include "ovni.h"
|
||||
#include "unittest.h"
|
||||
|
||||
static void
|
||||
write_dummy_json(const char *path)
|
||||
{
|
||||
const char *json = "{ \"version\" : 3 }";
|
||||
FILE *f = fopen(path, "w");
|
||||
|
||||
if (f == NULL)
|
||||
die("fopen json failed:");
|
||||
|
||||
if (fwrite(json, strlen(json), 1, f) != 1)
|
||||
die("fwrite json failed:");
|
||||
|
||||
fclose(f);
|
||||
}
|
||||
|
||||
static void
|
||||
test_ok(void)
|
||||
{
|
||||
OK(mkdir("ok", 0755));
|
||||
|
||||
const char *fname = "ok/stream.obs";
|
||||
const char *fname = "stream-ok.obs";
|
||||
FILE *f = fopen(fname, "w");
|
||||
|
||||
if (f == NULL)
|
||||
@ -47,10 +30,8 @@ test_ok(void)
|
||||
|
||||
fclose(f);
|
||||
|
||||
write_dummy_json("ok/stream.json");
|
||||
|
||||
struct stream stream;
|
||||
OK(stream_load(&stream, ".", "ok"));
|
||||
OK(stream_load(&stream, ".", fname));
|
||||
|
||||
if (stream.active)
|
||||
die("stream is active");
|
||||
@ -61,9 +42,7 @@ test_ok(void)
|
||||
static void
|
||||
test_bad(void)
|
||||
{
|
||||
OK(mkdir("bad", 0755));
|
||||
|
||||
const char *fname = "bad/stream.obs";
|
||||
const char *fname = "stream-bad.obs";
|
||||
FILE *f = fopen(fname, "w");
|
||||
|
||||
if (f == NULL)
|
||||
@ -79,10 +58,8 @@ test_bad(void)
|
||||
|
||||
fclose(f);
|
||||
|
||||
write_dummy_json("bad/stream.json");
|
||||
|
||||
struct stream stream;
|
||||
ERR(stream_load(&stream, ".", "bad"));
|
||||
ERR(stream_load(&stream, ".", fname));
|
||||
|
||||
err("OK");
|
||||
}
|
||||
|
||||
35
test/unit/thread.c
Normal file
35
test/unit/thread.c
Normal file
@ -0,0 +1,35 @@
|
||||
/* Copyright (c) 2021-2023 Barcelona Supercomputing Center (BSC)
|
||||
* SPDX-License-Identifier: GPL-3.0-or-later */
|
||||
|
||||
#include "common.h"
|
||||
#include "emu/thread.h"
|
||||
#include "unittest.h"
|
||||
|
||||
/* Ensure we can load the old trace format */
|
||||
static void
|
||||
test_old_trace(void)
|
||||
{
|
||||
struct thread th;
|
||||
|
||||
OK(thread_init_begin(&th, "loom.0/proc.0/thread.1.obs"));
|
||||
if (th.tid != 1)
|
||||
die("wrong tid");
|
||||
|
||||
OK(thread_init_begin(&th, "loom.0/proc.0/thread.2"));
|
||||
if (th.tid != 2)
|
||||
die("wrong tid");
|
||||
|
||||
ERR(thread_init_begin(&th, "loom.0/proc.0/thread.kk"));
|
||||
ERR(thread_init_begin(&th, "loom.0/proc.0/thread."));
|
||||
ERR(thread_init_begin(&th, "loom.0/proc.0/thread"));
|
||||
ERR(thread_init_begin(&th, "thread.prv"));
|
||||
|
||||
err("ok");
|
||||
}
|
||||
|
||||
int main(void)
|
||||
{
|
||||
test_old_trace();
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user