[Openmp-commits] [PATCH] D55795: Fix for CMPLRS-48319 proc_bind affinity bug

Jonathan Peyton via Phabricator via Openmp-commits openmp-commits at lists.llvm.org
Mon Dec 17 15:09:35 PST 2018

jlpeyton created this revision.
jlpeyton added reviewers: AndreyChurbanov, tlwilmar, hbae, omalyshe.
jlpeyton added a project: OpenMP.
Herald added a subscriber: jfb.

Using proc_bind clause on a nested #pragma omp parallel region
with KMP_AFFINITY set causes an assertion error. This assertion occurs because
the place-partition-var is not properly initialized in the nested master threads.
Trying to get an intuitive result with KMP_AFFINITY + proc_bind is difficult
because of how the KMP_AFFINITY gtid-to-place mapping occurs. This
patch creates an initial place list no matter what affinity mechanism is used.
For KMP_AFFINITY, the place-partition-var is initialized to all the places.

  rOMP OpenMP



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