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 <[EMAIL PROTECTED]> To: Tom Elken <[EMAIL PROTECTED]>Cc: Beowulf Mailing List <beowulf@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 (!).) > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org > To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf > _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
