From 4b88bf5c70c351c9b6758da7026b5673c0dcc8d9 Mon Sep 17 00:00:00 2001 From: Giorgis Georgakoudis Date: Tue, 24 Jan 2023 14:33:44 -0800 Subject: [PATCH] [OpenMP][docs] Update for record-and-replay Reviewed By: jdoerfert Differential Revision: https://reviews.llvm.org/D142492 --- openmp/docs/ReleaseNotes.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/openmp/docs/ReleaseNotes.rst b/openmp/docs/ReleaseNotes.rst index 48ae452..9941204 100644 --- a/openmp/docs/ReleaseNotes.rst +++ b/openmp/docs/ReleaseNotes.rst @@ -87,3 +87,14 @@ Non-comprehensive list of changes in this release * OpenMP-Opt (run as part of O1/O2/O3) will more effectively lower GPU resource usage and improve performance. +* Support record-and-replay functionality for individual OpenMP offload kernels. + Enabling recording in the host OpenMP target runtime library stores per-kernel + the device image, device memory state, and kernel launching information. The + newly added command-line tool `llvm-omp-kernel-replay` replays kernel execution. + Environment variables control recording/replaying: + * LIBOMPTARGET_RECORDING=<0|1>, 0: disable recording (default), 1: enable recording + * LIBOMPTARGET_RR_DEVMEM_SIZE = , default 64GB, amount of device + memory to pre-allocate for storing/loading when recording/replaying + * LIBOMPTARGET_RR_SAVE_OUTPUT=<0|1>, 0: disable saving device memory post-kernel execution + (default), 1: enable saving device memory post-kernel execution (used for verification + with `llvm-omp-kernel-replay`) -- 2.7.4