[Beowulf] Benchmarking?

Benjamin W. Mayer bmayer at cs.umn.edu
Thu Jul 29 13:46:16 EDT 2004


If you want something that takes into account interconnect more:

http://icl.cs.utk.edu/hpcc/

Cray of course won. But this should give a better reflection of total
system performance then linpack. Or for the best benchmark of all one
could benchmark the application(s) they want to run, too bad that is not
always an option.

Ben

On Thu, 29 Jul 2004, Philippe Blaise wrote:

>
> daniel.kidger at quadrics.com wrote:
>
> >>-----Original Message-----
> >>From: Jack C [mailto:jack at crepinc.com]
> >>Sent: 28 July 2004 19:58
> >>To: Jack C
> >>Cc: beowulf at beowulf.org
> >>Subject: Re: [Beowulf] Benchmarking?
> >>
> >>
> >>I was just told about linpack, and that it was good. And
> >>apperantly there is
> >>an MPI implementation thereof, but I sure can't find it...
> >>the MPI standard
> >>site is not very informative. :(
> >>
> >>Anyone know where to find that, or any other good ones?
> >>
> >>
> >
> >sigh.
> >
> >Linpack is ubiquitous - just look for 'xhpl' in Google.
> >It will take you to http://www.netlib.org/benchmark/hpl/
> >Unfortunately this benchmark does not test all aspects of a high performance cluster. Most notably it doesn't really stress MPI, such that most high performance interconnect solutions (IBA, Myrinet, Quadrics et al. [*])  would give fairly similar performance figures.
> >
> >
> >Yours,
> >Daniel.
> >
> >ps. [*] yes I do work for one of those vendors
> >
> >--------------------------------------------------------------
> >Dr. Dan Kidger, Quadrics Ltd.      daniel.kidger at quadrics.com
> >One Bridewell St., Bristol, BS1 2AA, UK         0117 915 5505
> >----------------------- www.quadrics.com -------------------->
> >
> >_______________________________________________
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> >
> >
> >
> Everyone knows that linpack perf is more or less equal to the number of
> cpus x gemm perf,
> that's why cheap linux clusters are compared to Quadrics clusters, or
> even X1, SX6 machines !
> But what could we suggest to definitively replace this old and stupid
> and political benchmark ?
> may be a boycott ?
>
>   Philippe Blaise.
>
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