Mark Hahn wrote: >> GigE is not perfect. My point is that for many applications >> it can work well. > > for many apps of certain job sizes... > >> desktop (32 bit PCI) cards. I managed to get 14.6 HPL GFLOPS >> and 4.35 GROMACS GFLOPS out of 8 nodes consisting of hardware > ... >> As a point of reference, a quad opteron 270 (2GHz) reported >> 4.31 GROMACS GFLOPS. > > that's perplexing to me, since the first cluster has semp/2500's, > right? that's a 1.75 GHz K8 core with 128K L2 and 64b memory > interface. versus the same number of 2.0 GHz, 1M cores each with > 4x 128b memory. I really wouldn't expect them to be that close - > any speculation on why GROMACS runs so poorly on the much better > SMP machine?
<googling for motherboard specs> Aha, Socket 462. The Semprons he used are K7 based. -- Geoffrey D. Jacobs Go to the Chinese Restaurant, Order the Special _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
