[Beowulf] Slection from processor choices; Requesting Giudence
gdjacobs at gmail.com
Sat Jun 17 11:57:03 EDT 2006
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 at beowulf.org
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
More information about the Beowulf