rithwiktom

GPU Allreduce performance on Aurora

4

I observe a performance issue with GPU Allreduce on Aurora ``` ~> mpiexec -n 6 -ppn 6 --cpu-bind list:2:15:28:54:67:80 /home/rtom_intel/sow/osu_xpmem_git/osu-benchmarks/mpi/collective/osu_allreduce -m 2048:2048 -i 10000 -x 200 -d ze D D...

[Aurora] GPU pipelining failure/performance degradation

28

When using `mpich/opt/develop-git.6037a7a` on Aurora, I notice that the following test crashes for large message size (~64MB) when GPU pipelining is turned on. For smaller message sizes, there is a...

## Pull Request Description This PR updates/adds description for some MPICH CVARs ## Author Checklist * [ ] **Provide Description** Particularly focus on _why_, not _what_. Reference background, issues, test...