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| author | Alexey Bataev <a.bataev@hotmail.com> | 2019-08-23 18:34:48 +0000 |
|---|---|---|
| committer | Alexey Bataev <a.bataev@hotmail.com> | 2019-08-23 18:34:48 +0000 |
| commit | 0366168f3ac6c838fa41cddc02db84d48403f21e (patch) | |
| tree | 98a44872ce06de19945aac46c572d193c7b7d9f9 /lldb/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py | |
| parent | 9cb059fdcc03e2144fa9aac0bfbb49c0d5d7efe2 (diff) | |
| download | bcm5719-llvm-0366168f3ac6c838fa41cddc02db84d48403f21e.tar.gz bcm5719-llvm-0366168f3ac6c838fa41cddc02db84d48403f21e.zip | |
[OPENMP][NVPTX]Use __syncwarp() to reconverge the threads.
Summary:
In Cuda 9.0 it is not guaranteed that threads in the warps are
convergent. We need to use __syncwarp() function to reconverge
the threads and to guarantee the memory ordering among threads in the
warps.
This is the first patch to fix the problem with the test
libomptarget/deviceRTLs/nvptx/src/sync.cu on Cuda9+.
This patch just replaces calls to __shfl_sync() function with the call
of __syncwarp() function where we need to reconverge the threads when we
try to modify the value of the parallel level counter.
Reviewers: grokos
Subscribers: guansong, jfb, jdoerfert, caomhin, kkwli0, openmp-commits
Tags: #openmp
Differential Revision: https://reviews.llvm.org/D65013
llvm-svn: 369796
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py')
0 files changed, 0 insertions, 0 deletions
