[Openmp-commits] [PATCH] D107121: [OpenMP] Fix performance regression reported in bug #51235
Joachim Protze via Phabricator via Openmp-commits
openmp-commits at lists.llvm.org
Sat Jul 31 11:03:20 PDT 2021
protze.joachim added a comment.
@tianshilei1992 when flaky tests fail/block in the build bots, this is often triggered by unusual thread interleaving due to over-subscription.
To reproduce on my own system, it helped sometimes to oversubscribe the system by running multiple instances to the flaky test at the same time:
for i in $(seq 20); do ./gtid.cpp.out & done
or to repeat until failing/hanging:
while for i in $(seq 20); do ./gtid.cpp.out & done; wait; do true; done
Can you reproduce the hang on your system and verify that this change fixes the issue?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D107121/new/
https://reviews.llvm.org/D107121
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