[Openmp-commits] [PATCH] D18577: OMP_WAIT_POLICY changes.

Hal Finkel via Openmp-commits openmp-commits at lists.llvm.org
Tue Mar 29 14:23:30 PDT 2016

hfinkel added a subscriber: hfinkel.
hfinkel added a comment.

>   This change has OMP_WAIT_POLICY=active to mean that threads will busy-wait in spin loops and virtually never go to sleep.  OMP_WAIT_POLICY=passive now means that threads will immediately go to sleep inside a spin loop.  KMP_BLOCKTIME was the previous mechanism to specify this behavior via KMP_BLOCKTIME=0 or KMP_BLOCKTIME=infinite, but the standard OpenMP environment variable should also be able to specify this behavior.

To clarify, is this a change in behavior for OMP_WAIT_POLICY=active, or just for OMP_WAIT_POLICY=passive?



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