[Beowulf] Recent comparisons of 1600 MHz external Harpertown vs.235x AMD processors?

[Joshua mora acosta]

If you had a 2.3GHz at 2.0GHz NB you would get 17.5GB/sec.

Joshua

------ Original Message ------
Received: Thu, 08 May 2008 02:18:30 PM PDT
From: Mark Hahn <hahn at mcmaster.ca>
To: Tom Elken <tom.elken at qlogic.com>Cc: Beowulf Mailing List
<beowulf at beowulf.org>
Subject: RE: Re[2]: [Beowulf] Recent comparisons of 1600 MHz external
Harpertown vs.235x AMD processors?

> > Here are some measurements I just made on OpenMP STREAM:
> >                                         8-thread
> >                                       STREAM Copy (GB/s)
> > Harpertown -                           ----------------
> > Xeon 5410, 2.33 GHz, 1333 MHz FSB:           6.2
> > Xeon 5472, 3.0  GHz, 1600 MHz FSB:           7.3
> > Barcelona -
> > Opteron 2352, 2.1 GHz:                      15.7
> > (the 3 other STREAM components were pretty similar to Copy)
> 
> very nice.  it would be good to know the memory configuration.
> 
> of course, the real question is how well Nehalem will do - 
> does anyone have numbers?  it's a sticky time for specifying 
> clusters, since current Intel chips have great onchip performance
> but are dramatically constrained in decent-sized HPC apps. 
> choosing AMD, while defensible based on current memory performance, 
> looks extremely iffy otherwise.  (the most recent AMD disclosures 
> have them attempting to milk the k10 core for the next couple years (!).)
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