[Openmp-commits] [PATCH] D101882: [OpenMP] Fix hidden helper + affinity assignment

Wed May 5 05:38:43 PDT 2021

ronlieb added a comment.

testing results: 128 cores used.

In my production tree:
Current helpers=false num_helpers=0 
 Success 619.lbm_s base refspeed ratio=77.36, runtime=67.711483

Helpers=false num_helpers=8 ( more like upstream) slowdown
 Success 619.lbm_s base refspeed ratio=63.64, runtime=82.301507

Helpers=false num_helpers=8  patch applied:  slowdown slightly improved, but not recovered sufficiently
 Success 619.lbm_s base refspeed ratio=66.47, runtime=78.807917

Helpers=false num_helpers=0 patch applied , performance recovered,
 Success 619.lbm_s base refspeed ratio=77.31, runtime=67.752051

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D101882/new/

https://reviews.llvm.org/D101882