[Beowulf] Recent comparisons of 1600 MHz external
Harpertown vs.235x AMD processors?
tom.elken at qlogic.com
Fri May 9 09:00:59 PDT 2008
> From: Mark Hahn [mailto:hahn at mcmaster.ca]
> > 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.
Very good point. The faster Xeon has faster memory too.
2x Xeon 5410: 16GB Reg ECC DDR2-667 FBDIMM memory
2x Xeon 5472: 16GB Reg ECC DDR2-800 FBDIMM memory
2x Opteron 2352: 16GB ECC Reg. DDR2-667 SDRAM memory
8 dimms in the Xeon systems, not sure about the Opteron.
> 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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