[all-commits] [llvm/llvm-project] 7eba3e: [OpenMP][AMDGPU] Add Envar for controlling HSA bus...

[Michael Halkenhäuser via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7eba3e58d5a383e47973c3d3945277f0115c86f3
      https://github.com/llvm/llvm-project/commit/7eba3e58d5a383e47973c3d3945277f0115c86f3
  Author: Michael Halkenhaeuser <MichaelGerald.Halkenhauser at amd.com>
  Date:   2023-08-07 (Mon, 07 Aug 2023)

  Changed paths:
    M openmp/docs/design/Runtimes.rst
    M openmp/libomptarget/plugins-nextgen/amdgpu/src/rtl.cpp

  Log Message:
  -----------
  [OpenMP][AMDGPU] Add Envar for controlling HSA busy queue tracking

If the Envar is set to true (default), busy HSA queues will be
actively avoided when assigning a queue to a Stream.

Otherwise, we will initialize a new HSA queue for each requested
Stream, then default to round robin once the set maximum has been
reached.

Reviewed By: jdoerfert, kevinsala

Differential Revision: https://reviews.llvm.org/D156996