230 lines
10 KiB
TOML
230 lines
10 KiB
TOML
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[version]
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# Choose whether the runtime runs with debug symbols and internal asserts. Enabling this option
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# may produce significant overheads, so production or performance executions should disable this
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# option. Default is false
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debug = false
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# Choose the dependency system implementation. Default is "discrete"
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# Possible values: "discrete", "regions"
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dependencies = "discrete"
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# Choose the instrumentation variant to run. Default is "none"
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# Possible values: "none", "ctf", "extrae", "graph", "lint", "stats", "verbose"
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instrument = "ovni"
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[turbo]
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# Choose whether enabling floating-point unit optimizations in all Nanos6 threads. Enabling this
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# option can speedup the floating-point computations in user tasks, but may produce imprecise
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# results. It enables flush-to-zero (FZ) and denormals are zero (DAZ) optimizations in Intel®
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# processors. Default is false
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enabled = false
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[scheduler]
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# Choose the task scheduling policy. Default is "fifo"
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# Possible values: "fifo", "lifo"
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policy = "fifo"
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# Enable the immediate successor feature to improve cache data reutilization between successor
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# tasks. If enabled, when a CPU finishes a task it starts executing the successor task (computed
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# through their data dependencies). Default is true
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immediate_successor = true
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# Indicate whether the scheduler should consider task priorities defined by the user in the
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# task's priority clause. Default is true
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priority = true
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[cpumanager]
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# The underlying policy of the CPU manager for the handling of CPUs. Default is "default", which
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# corresponds to "hybrid"
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# Possible values: "default", "idle", "busy", "hybrid", "lewi", "greedy"
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policy = "default"
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# The maximum number of iterations to busy wait for before idling. Default is "240000". Only
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# works for the 'hybrid' policy. This number will be divided by the number of active CPUs to
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# obtain a "busy_iters per CPU" metric for each individual CPU to busy-wait for
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busy_iters = 240000
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[taskfor]
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# Choose the total number of CPU groups that will execute the worksharing tasks (taskfors). Default
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# is none (not set), which means that the runtime will create one taskfor group per NUMA node
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# groups = 1
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# Indicate whether should print the taskfor groups information
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report = false
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[throttle]
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# Enable throttle to stop creating tasks when certain conditions are met. Default is false
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enabled = false
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# Maximum number of child tasks that can be created before throttling. Default is 5000000
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tasks = 5000000
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# Maximum memory pressure (percent of max_memory) before throttling. Default is 70 (%)
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pressure = 70 # %
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# Maximum memory that can be used by the runtime. Default is "0", which equals half of system memory
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max_memory = "0"
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# Evaluation interval (us). Each time this amount of time is elapsed, the throttle system queries
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# the memory allocator statistics and evaluates the current memory pressure. A higher interval
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# results in less accurate pressure estimation, but a lower interval introduces noticeable overhead,
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# as reading memory statistics requires a global lock on the allocator to aggregate per-thread
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# statistics. Default is 1000
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polling_period_us = 1000
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[numa]
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# Enable NUMA tracking of task data. NUMA tracking consists of annotating the NUMA location
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# of data to be later scheduled based on this information. When using "auto" this feature is
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# enabled in the first allocation done using the Nanos6 NUMA API. Default is "auto"
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# Possible values: "auto", "on", "off"
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tracking = "auto"
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# Indicate whether should print the NUMA bitmask of each NUMA wildcards
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report = false
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# Use the page auto-discovery mechanism to detect the system's page size
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# Default is true, which is useful in systems with THP enabled
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# Set to false will use the default page size, which is arch-dependent
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discover_pagesize = true
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[hardware_counters]
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# Enable the verbose mode of hardware counters, printing a small summary of metrics at the
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# end of the execution. Default is false
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verbose = false
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# The verbose file's name. Default is "nanos6-output-hwcounters.txt"
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verbose_file = "nanos6-output-hwcounters.txt"
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[hardware_counters.papi]
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# Enable the PAPI backend of the hardware counters module. Default is false
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enabled = false
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# The list of PAPI counters to read. Default is "PAPI_TOT_INS" and "PAPI_TOT_CYC"
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counters = [
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"PAPI_TOT_INS",
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"PAPI_TOT_CYC"
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]
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[hardware_counters.rapl]
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# Enable the RAPL backend of the hardware counters module for runtime-wise energy
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# metrics. Default is false
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enabled = false
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[monitoring]
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# Indicate whether enabling the Monitoring of tasks and CPUs, which allows the usage of
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# prediction-based policies. Disabled by default
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enabled = false
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# Indicate whether enabling the "Wisdom" mechanism of Monitoring, saving normalized metrics for
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# future executions and loading previously saved metrics when the runtime initializes. Default
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# is false
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wisdom = false
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# Enable the verbose mode of Monitoring, which prints a detailed summary of task type metrics
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# at the end of the execution. Default is true
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verbose = true
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# The verbose file's name. Default is "output-monitoring.txt"
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verbose_file = "output-monitoring.txt"
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# The prediction rate at which CPU usage predictions are infered. Default is once every 100µs
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cpuusage_prediction_rate = 100 # µs
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# The number of samples (window) of the normalized exponential moving average for predictions
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# Default is 20
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rolling_window = 20
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[devices]
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[instrument]
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[instrument.ctf]
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# Choose the temporary directory where to store intermediate CTF files. Default is none
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# (not set), which means that $TMPDIR will be used if present, or /tmp otherwise
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# tmpdir = "/tmp"
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[instrument.ctf.converter]
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# Indicate whether the trace converter should automatically generate the trace after
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# executing a program with CTF instrumentation. Default is true
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enabled = true
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# Use the fast converter. This feature is experimental and generates a trace compatible
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# with just a subset of Paraver cfgs. Default is false
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fast = false
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# Indicate the location of the ctf2prv converter script. Default is none (not set),
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# which means that the $CTF2PRV will be used if present, or ctf2prv in $PATH
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# otherwise
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# location = "path/to/ctf2prv"
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# Choose the events that will be traced
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[instrument.ctf.events]
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# Linux Kernel events options. Nanos6 can collect Linux kernel internal events using the
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# perf_event_open system call. This requires to set /proc/sys/kernel/perf_event_paranoid
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# to -1 and read permissions for either /sys/kernel/tracing or /sys/kernel/debug/tracing.
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# Events can be selected individually and/or using Nanos6-defined presets
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[instrument.ctf.events.kernel]
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# Select one or more predefined sets of events. Available options are:
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# - preemption: Trace context switches and interrupts
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# - context_switch: Trace context switches
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# - syscall: Trace all kernel syscalls entry and exit
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# presets = [
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# "preemption"
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# ]
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# Provide a file with a list of individual events to enable, one event per line.
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# Lines starting with "#" are omitted.
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# file = "./nanos6_kernel_events"
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# Exclude selected events. Disable events even if enabled in a preset or the
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# user provided file.
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# exclude = [
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# "sys_enter_gettimeofday",
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# "sys_exit_gettimeofday"
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# ]
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[instrument.ovni]
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# Level of detail. Selects what should be instrumented:
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# 1 = Tasks
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# 2 = Tasks + simple subsystem (the default)
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# 3 = Tasks + full subsystem + memory (huge performance penalty)
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level = 2
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[instrument.extrae]
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# Indicate whether the trace should show the activity of the threads instead of the CPUs'
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# activity. Default is false, which shows the activity of CPUs
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as_threads = false
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# Choose the detail level of the information generated in extrae traces. Default is 1
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detail_level = 1
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[instrument.graph]
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# Indicate whether the resulting PDF should be opened automatically with the display
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# command. Default is false
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display = false
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# Choose the command to be used to automatically display the resulting PDF
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display_command = "xdg-open"
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# Indicate whether the graph nodes should remove the directories from the source code
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# file names. Default is false
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shorten_filenames = false
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# Indicate whether should show the internal data structures that determine when tasks
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# are ready. Default is false
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show_dependency_structures = false
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# Include the information about the range of data or region that is covered when showing
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# internal data structures. Default is false
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show_regions = false
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# Indicate whether should show the internal data structures that do not determine dependencies
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# or that are redundant by transitivity. Default is false
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show_spurious_dependency_structures = false
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# Choose whether should force future and previous dependencies to be shown with different
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# graphical attributes. Default is false
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show_dead_dependencies = false
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# Include the internal data structures after they are no longer relevant. Default is false
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show_dead_dependency_structures = false
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# Instead of trying to collapse in one step as many related changes as possible, show one
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# at a time. Default is false
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show_all_steps = false
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# Show superaccess links. Default is true
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show_superaccess_links = true
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# Choose whether to emit a table next to the graph with a description of the changes in
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# each frame. Default is false
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show_log = false
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[instrument.stats]
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# The outfile file for emitting the statistics. Default is the standard error
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output_file = "/dev/stderr"
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[instrument.verbose]
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# Output device or file for verbose log. Default is "/dev/stderr"
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output_file = "/dev/stderr"
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# Print timestamps on log. Default is true
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timestamps = true
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# Delay verbose output to prevent mixing with application output. Default is false
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dump_only_on_exit = false
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# Verbose log concepts to display. Possible values on README.md
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areas = ["all", "!ComputePlaceManagement", "!DependenciesByAccess", "!DependenciesByAccessLinks",
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"!DependenciesByGroup", "!LeaderThread", "!TaskStatus", "!ThreadManagement"]
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[memory]
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[misc]
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# Stack size of threads created by the runtime. Default is 8M
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stack_size = "8M"
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[loader]
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# Enable verbose output of the loader, to debug dynamic linking problems. Default is false
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verbose = false
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# Choose whether to print a warning when there is any invalid NANOS6 environment variables
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# defined when running a program. Default is true
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warn_envars = true
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# Path to the nanos6 libraries. Default is none
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# library_path = "path/to/nanos6/lib"
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# Prefix for the report printing all the runtime variables. Default is none
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# report_prefix = "#"
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