[Beowulf] Register article on Opteron - disagree

Greg Lindahl lindahl at pathscale.com
Mon Nov 22 19:06:40 EST 2004


On Mon, Nov 22, 2004 at 10:17:55AM -0500, Sean Dilda wrote:
> On Mon, 2004-11-22 at 00:57, Joe Landman wrote:
> >  If a Nocona follow-on follows the design of the Opteron (IOMMU 
> > and HT, among other things), then things could get quite interesting.
> > 
> 
> I can't imagine why Intel would drop a feature (HT) to match Opteron. 

AMD has Hyper Transport, Intel has Hyper Threading. The first gets you
better memory and I/O bandwidth, the second is the thing you turn off
in the BIOS to keep it from screwing up your MPI runs.

-- greg

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