[Openmp-commits] [PATCH] D45527: [OpenMP] Fix affinity API for KMP_AFFINITY=none|compact|scatter

[Jonathan Peyton via Phabricator via Openmp-commits]

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

Currently, the affinity API reports garbage for the initial place list and any
thread's place lists when using KMP_AFFINITY=none|compact|scatter.
This patch does two things:

1. for KMP_AFFINITY=none, Creates a one entry table for the places, this way, the initial place list is just a single place with all the proc ids in it. We also set the initial place of any thread to 0 instead of KMP_PLACE_ALL so that the thread reports that single place (place 0) instead of garbage (-1) when using the affinity API.

2. When non-OMP_PROC_BIND affinity is used (including KMP_AFFINITY=compact|scatter), a thread's place list is populated correctly. We assume that each thread is assigned to a single place.  This is implemented in two of the affinity API functions


Repository:
  rOMP OpenMP

https://reviews.llvm.org/D45527

Files:
  runtime/src/kmp.h
  runtime/src/kmp_affinity.cpp
  runtime/src/kmp_ftn_entry.h
  runtime/src/kmp_settings.cpp

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