top500 list (was: opteron VS Itanium 2)
Keith D. Underwood
kdunder at sandia.gov
Mon Nov 17 11:53:25 EST 2003
> I am really curious to know why their are only
> getting 59% efficiency when Quadrics system with
> similar node counts is above 70%. We know it
> isn't an issue with the node speed, because
> the X cluster ran at 80% efficiency with 128 nodes.
> Whats going on with the Infiniband?????
It's not just the Infiniband, a lot of it is the processor. Actually,
it's the artificially inflated FLOPs of the processor. Everyone who
believes that a G5 should be rated at 8 GFLOPs, please speak up...
Multiply-adds are great for some stuff, but not everything... (LINPACK
happens to be among the stuff it's pretty good for).
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