[Openmp-commits] [PATCH] D40722: Add missing memory barrier for queuing locks

Jonas Hahnfeld via Phabricator via Openmp-commits openmp-commits at lists.llvm.org
Fri Dec 8 06:58:46 PST 2017

Hahnfeld added a comment.

In https://reviews.llvm.org/D40722#949468, @pawosm01 wrote:

> +1, although I ran this omp_single_copyprivate.c example in a loop 10000 times on two different AArch64 machines (ARMv8 and ARMv8.1) and didn't observe any hangs, before and after applying this patch.

That's the problem with memory consistency... Did you add the `num_threads` clause when testing without the memory barrier? This made it much more likely for me

  rOMP OpenMP


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