v4.0.x: Improve MPI_Waitall performance for MPI_THREAD_MULTIPLE #9287
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Avoid atomic cmpxchng operations for MPI requests that are already complete. This improves the performance in message rate benchmarks. Signed-off-by: Austen Lauria <[email protected]>
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Avoid atomic cmpxchng operations for MPI requests that are already
complete. This improves the performance in message rate benchmarks.
bot:notacherrypick
Signed-off-by: Austen Lauria [email protected]