Hello
Make sure you use a very recent Linux kernel. There was a bug regarding L3
caches on 24-core Epyc processors which has been fixed in 4.14 and backported
in 4.13.x (and maybe in distro kernels too).
However, that would likely not cause huge performance difference unless your
application
I'm getting poor performance on OpenMPI tasks on a new AMD 7401P EPYC
server. I suspect hwloc providing a poor topology may have something to do
with it as I receive this warning below when creating a job.
Requested data files available at http://static.skysight.io/out.tgz
Cheers,
Matthew
