[Users] ET on AMD Epyc cores?

[Geraint Pratten]

Hi Erik,

Thanks for the quick reply! It certainly sounds like Epyc may be an
interesting and competitive option.

Best,
Geraint

On Mon, 20 Jan 2020 at 18:19, Erik Schnetter <schnetter at cct.lsu.edu> wrote:

> Geraint
>
> Regarding BLAS: I recommend using OpenBLAS instead of MKL there (but
> haven't compared performance). There is a thorn
> ExternalLibraries/OpenBLAS (part of the ET, but not enabled by
> default) that interfaces to OpenBLAS and/or builds OpenBLAS if it is
> not already available on the system.
>
> I am not aware of any issues. Regarding benchmarking, thorn
> CactusUtils/Vectors supports SIMD vectorization, and it should already
> support Epyc. From the technical discussions on the web it seems that
> they should be well suited for the ET. In particular the large L1
> instruction cache should be quite beneficial.
>
> Thank you for the pointer to the Prace best Epyc practices.
>
> -erik
>
> On Mon, Jan 20, 2020 at 11:50 AM Geraint Pratten
> <geraint.pratten at gmail.com> wrote:
> >
> > Hi everyone,
> >
> > Does anyone have any experience running on AMD Epyc cores? It seems that
> these are becoming quite trendy and I found a pretty decent best practice
> guide that Prace released
> >
> > http://www.prace-ri.eu/best-practice-guide-amd-epyc
> >
> > However, whenever I've compiled ET recently its typically been on Intel
> cores + Intel compiler + Intel MKL etc. However, Intel MKL is notorious for
> being subotpimal on non-Intel cores. Does anyone know of any possible
> issues that could arise when running ET on AMD Epyc cores? Similarly (and
> likely optimistically), has anyone had the chance to benchmark the
> performance of ET on the AMD cores?
> >
> > Thanks!
> > Geraint
> > _______________________________________________
> > Users mailing list
> > Users at einsteintoolkit.org
> > http://lists.einsteintoolkit.org/mailman/listinfo/users
>
>
>
> --
> Erik Schnetter <schnetter at cct.lsu.edu>
> http://www.perimeterinstitute.ca/personal/eschnetter/
>
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