[HPGMG Forum] HPGMG 1.0: A Benchmark for Ranking High Performance Computing Systems

Mark Adams mfadams at lbl.gov
Thu Jun 12 15:38:37 UTC 2014

Hi Benson,  [cc'ing the forum]

On Thu, Jun 12, 2014 at 10:28 AM, Benson Muite <benson.muite at ut.ee> wrote:

> Hi Mark,
> Would you consider variations on linear elliptic equation solver?

Yes, but the top500 is a big business with lots of users of wildly
different backgrounds, etc.  Maintaining the top500 is a lot of work and
not a lot of resources and so we are trying to keep the maintenance costs
way down.

We have discussed ways to get more coverage out of HPGMG but have a long
way to go before we take any extensions seriously.  More interesting
equations is one dimension that we have considered but I see our biggest
weakness currently as particle codes (MC, etc.); this might be the first


> I
> agree with many of your comments in your pre-print, but it would seem
> that limiting one multigrid (or for example conjugate gradient) may be a
> choice that is not optimal on all architectures and hence reduce the
> motivation for manufacturers to produce computers that solve large
> problems quickly rather than simply have good dense matrix operations or
> good performance for one multigrid algorithm?

> Regards,
> Benson
> --
> Hajussüsteemide Teadur
> Arvutiteaduse Instituut
> Tartu Ülikool
> J.Liivi 2, 50409
> Tartu
> www.math.ut.ee/~benson
> ----
> Research Fellow of Distributed Systems
> Institute of Computer Science
> University of Tartu
> J.Liivi 2, 50409
> Tartu, Estonia
> www.math.ut.ee/~benson
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