243 lines
8.5 KiB
Markdown
243 lines
8.5 KiB
Markdown
# Changelog
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All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
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and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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## [Unreleased]
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### Added
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- Consistency check for events emitted when the kernel has removed the thread
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from the CPU.
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## [1.8.0] - 2024-03-18
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### Added
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- Add new body model to support parallel tasks in nOS-V (used in taskfor).
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- Add the ability to restrict transitions in the task model states.
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- Add nOS-V support for parallel tasks reading the body id from the
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event payload.
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- Keep a changelog of emulation model versions.
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### Changed
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- The task model now requires the previous task body to be paused before nesting
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another one. A compatibility flag is still available to still allow the old
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behavior.
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- Nanos6 model version increased to 1.1.0.
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- nOS-V model version increased to 2.0.0.
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## [1.7.0] - 2024-03-12
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### Added
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- Add OpenMP model (`P`) at version 1.1.0 (currently it only supports subsystems
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and only works with the OpenMP-V runtime, on top of nOS-V).
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### Changed
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- Add support for `nosv_attach` and `nosv_detach` events VA{aAeE}.
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- Ignore old nOS-V attach events VH{aA}.
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- The nOS-V model version is bumped to 1.1.0.
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## [1.6.0] - 2024-02-14
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### Changed
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- All events now must be declared for each emulation model and given a
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description including the payload arguments.
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### Added
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- Manual page for ovnidump(1).
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- Describe events in human readable format with ovnidump.
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- New `-x` option in ovnidump to show the payload in hexadecimal.
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## [1.5.1] - 2023-12-20
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### Fixed
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- Calling `ovni_thread_isready()` after `ovni_thread_free()` now returns 0.
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- Emitting events in a non-ready thread now aborts the program with a
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message rather than causing a segfault.
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## [1.5.0] - 2023-12-15
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### Added
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- New function `ovni_thread_require()` to selectively enable emulation models
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and check their version is compatible (if not used all models will be
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enabled).
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- Support for per-thread metadata
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- Store the version of libovni in the metadata
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- Streams are marked as finished when `ovni_thread_free()` is called. A warning
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is emitted in the emulator for those streams that are not finished properly.
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- List the emulation models and versions with `ovniemu -h`
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- New `-a` ovniemu option to enable all models
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### Changed
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- Updated process metadata to version 2 (traces generated with an older libovni
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are not compatible with the emulator).
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- Emulation models now have a semantic version (X.Y.Z) instead of just a number.
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- Install ovniver with the runpath set.
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### Fixed
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- Close stream FD on `ovni_thread_free()`.
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## [1.4.1] - 2023-11-16
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### Changed
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- Fix emulation for level 2 or lower in nOS-V with inline tasks by
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allowing duplicates in the subsystem channel.
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## [1.4.0] - 2023-11-08
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### Added
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- Add `OVNI_TRACEDIR` envar to change the trace directory (default is `ovni`).
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### Changed
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- Don't modify nOS-V subsystem state on task pause. The "Task: Running"
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state is now renamed to "Task: In body" to reflect the change.
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- Use pkg-config to locate the nOS-V library and get the version. Use
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`PKG_CONFIG_LIBDIR=/path/to/nosv/install/lib/pkgconfig` to use a custom
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installation path.
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## [1.3.0] - 2023-09-07
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### Added
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- Add `ovni_version_get()` function.
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- Add the `ovniver` program to report the libovni version and commit.
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- Add nOS-V API subsystem events for `nosv_create()` and `nosv_destroy()`.
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- Add TAMPI model with `T` code.
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- Add subsytem events and cfgs for TAMPI model.
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- Add MPI model with `M` code.
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- Add function events and cfgs for MPI model.
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## [1.2.2] - 2022-07-26
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### Added
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- Add this CHANGELOG.md file to keep track of changes.
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### Fixed
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- Don't rely on /tmp or $TMPDIR in tests.
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- Fix misleading message in version check.
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- Fix error message when opening missing trace directories
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## [1.2.1] - 2022-07-25
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### Fixed
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- Set default visibility to hidden to prevent clashes with other functions such
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as the verr() in the glibc.
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- Don't hardcore destination directory names like lib, to use the ones in the
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destination host (like lib64).
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- Add support in ovnisort for cases where in the sorting region there are flush
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events.
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- Remove CI nix roots from the builds to allow the garbage collector to remove
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the build.
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- Fix the detection of the -fompss-2 flag in cmake by setting the flag at link
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time too.
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- Fix spawn task test by waiting for the task to finish before exiting.
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## [1.2.0] - 2022-05-02
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This version adds the initial support for the breakdown view and some fixes.
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### Added
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- Add the initial breakdown view showing the task type, the subsystem or the
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idle state.
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- Added the sort module for channels to support the breakdown view.
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- Add the -b option in ovniemu to enable the breakdown trace.
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- Add support for sponge CPUs in Nanos6.
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- Add the cmake option `-DUSE_MPI=OFF` to build ovni without MPI.
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- Add a test for two nOS-V shared memory segments.
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### Fixed
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- Sort the timeline rows in MPI rank order if given.
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- Skip duplicated entries when ovnisync to runs multiple times in the same node.
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- Allow tasks to be re-executed to support the taskiter in the nOS-V model.
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- Use the signed `int64_t` type for clock offsets, so they can be negative.
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- Avoid fmemopen() due to a bug in old glibc versions.
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- Fix clang format for braced list
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- Fix buffer overflow in `sort_replace()` of the sort module.
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- Set the size of the channel property arrays to prevent a buffer overflow.
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## [1.1.0] - 2022-03-24
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This version introduces the patch bay and a big redesign in the way the channels
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are used along with some other changes.
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### Changed
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- The channels are now connected using the patch bay, where they must be
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registered using an unique name.
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- The tracking modes are implemented by using a mux, and an arbitrary way of
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tracking other channels is now possible, as it is required for the breakdown
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model.
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- The channels don't have visibility with other parts of the code, they interact
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with a callback only.
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- The emulator code has been split into smaller modules which are independent of
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each other, so we can unit test them separately.
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- The models are now implemented following the model spec functions.
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- Updated the ovni and Nanos6 models
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- Model data is now stored by the `extend_set`/`get` methods, so it is kept
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separate between models.
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- The CPU and thread channels have been moved to the emulator while the ones
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specific to the user space tracing with libovni.so are controlled by the ovni
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model. This allows other thread/CPU tracing mechanisms (kernel events) to
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update the emulator channels while the other models are not affected.
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- The trace streams are now independent of the hierarchy loom/proc/thread, and
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end with the suffix .obs, so we can add other types of traces in the future.
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- Models can register any arbitrary number of channels on runtime, so we can add
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load hardware counters in one channel each.
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- Channels have a user friendly name so debugging is easier
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- The die() abort mechanism has been transformed into if() + return -1, so we
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can do unit testing and check the errors and also finish the PRV traces when
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the emulator encounters an error and open them in Paraver with the last
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processed event.
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- The emulator can be stopped with ^C, producing a valid Paraver trace.
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- Prevents leaving threads in the running state by adding a check at the end of
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emulation
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- The Paraver configurations files are copied into the trace directory.
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### Removed
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- The TAMPI and OpenMP models have been removed as they are not maintained.
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- Punctual events are not implemented for now.
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- No error states, when more than one thread is running in the virtual
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CPU, no subsystem is shown in the CPU view.
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## [1.0.0] - 2022-12-16
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### Added
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- First ovni release.
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[unreleased]: https://pm.bsc.es/gitlab/rarias/ovni/-/commits/master
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[1.8.0]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.8.0
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[1.7.0]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.7.0
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[1.6.0]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.6.0
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[1.5.1]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.5.1
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[1.5.0]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.5.0
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[1.4.1]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.4.1
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[1.4.0]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.4.0
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[1.3.0]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.3.0
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[1.2.2]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.2.2
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[1.2.1]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.2.1
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[1.2.0]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.2.0
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[1.1.0]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.1.0
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[1.0.0]: https://pm.bsc.es/gitlab/rarias/ovni/-/tags/1.0.0
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