diff options
author | Tom Stellard <tstellar@redhat.com> | 2022-02-02 10:29:29 +0300 |
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committer | Tom Stellard <tstellar@redhat.com> | 2022-02-02 10:54:52 +0300 |
commit | a2601c98873376bbbeff4b6eddf0f4d920535f8b (patch) | |
tree | 8b9b3e28ab60c062cd338b89f0a2e229c5084de3 /openmp | |
parent | db01b123d012df2f0e6acf7e90bf4ba63382587c (diff) |
Bump the trunk major version to 15llvmorg-15-init
Diffstat (limited to 'openmp')
-rw-r--r-- | openmp/docs/ReleaseNotes.rst | 55 |
1 files changed, 3 insertions, 52 deletions
diff --git a/openmp/docs/ReleaseNotes.rst b/openmp/docs/ReleaseNotes.rst index 476315273f5b..697a9e1c21fc 100644 --- a/openmp/docs/ReleaseNotes.rst +++ b/openmp/docs/ReleaseNotes.rst @@ -1,10 +1,10 @@ =========================== -OpenMP 12.0.0 Release Notes +OpenMP 15.0.0 Release Notes =========================== .. warning:: - These are in-progress notes for the upcoming LLVM 12.0.0 release. + These are in-progress notes for the upcoming LLVM 15.0.0 release. Release notes for previous releases can be found on `the Download Page <https://releases.llvm.org/download.html>`_. @@ -12,59 +12,10 @@ OpenMP 12.0.0 Release Notes Introduction ============ -This document contains the release notes for the OpenMP runtime, release 12.0.0. +This document contains the release notes for the OpenMP runtime, release 15.0.0. Here we describe the status of OpenMP, including major improvements from the previous release. All OpenMP releases may be downloaded from the `LLVM releases web site <https://llvm.org/releases/>`_. Non-comprehensive list of changes in this release ================================================= - -- Extended the ``libomptarget`` API functions to include source location - information and OpenMP target mapper support. This allows ``libomptarget`` to - know the source location of the OpenMP region it is executing, as well as the - name and declarations of all the variables used inside the region. Each - function generated now uses its ``mapper`` variant. The old API calls now call - into the new API functions with ``nullptr`` arguments for backwards - compatibility with old binaries. Source location information for - ``libomptarget`` is now generated by Clang at any level of debugging - information. - -- Added improved error messages for ``libomptarget`` and ``CUDA`` plugins. Error - messages are now presented without requiring a debug build of - ``libomptarget``. The newly added source location information can also be used - to identify which OpenMP target region the failure occurred in. More - information can be found :ref:`here <libopenmptarget_errors>`. - -- Added additional environment variables to control output from the - ``libomptarget`` runtime library. ``LIBOMPTARGET_PROFILE`` to - generate time profile output similar to Clang's ``-ftime-trace`` option. - ``LIBOMPTARGET_MEMORY_MANAGER_THRESHOLD`` sets the threshold size for which - the ``libomptarget`` memory manager will handle the allocation. - ``LIBOMPTARGET_INFO`` allows the user to request certain information from the - ``libomptarget`` runtime using a 32-bit field. A full description of each - environment variable is described :ref:`here <libopenmptarget_environment_vars>`. - -- ``target nowait`` was supported via hidden helper task, which is a task not - bound to any parallel region. A hidden helper team with a number of threads is - created when the first hidden helper task is encountered. The number of threads - can be configured via the environment variable - ``LIBOMP_NUM_HIDDEN_HELPER_THREADS``. By default it is 8. If - ``LIBOMP_NUM_HIDDEN_HELPER_THREADS=0``, hidden helper task is disabled and - falls back to a regular OpenMP task. It can also be disabled by setting the - environment variable ``LIBOMP_USE_HIDDEN_HELPER_TASK=OFF``. - -- ``deviceRTLs`` for NVPTX platform is CUDA free now. It is generally OpenMP code. - Target dependent parts are implemented with Clang/LLVM/NVVM intrinsics. CUDA - SDK is also dropped as a dependence to build the device runtime, which means - device runtime can also be built on a CUDA free system. However, it is - disabled by default. Set the CMake variable - ``LIBOMPTARGET_BUILD_NVPTX_BCLIB=ON`` to enable the build of NVPTX device - runtime on a CUDA free system. ``gcc-multilib`` and ``g++-multilib`` are - required. If CUDA is found, the device runtime will be built by default. - -- Static NVPTX device runtime library (``libomptarget-nvptx.a``) was dropped. - A bitcode library is required to build an OpenMP program. If the library is - not found in the default path or any of the paths defined by ``LIBRARY_PATH``, - an error will be raised. User can also specify the path to the bitcode device - library via ``--libomptarget-nvptx-bc-path=``. |