ATHLON vs XEON: number crunching

Ivan Oleynik oleynik at chuma.cas.usf.edu
Wed Jun 19 20:55:05 EDT 2002


Mark,

Does it mean that there is no way to get more from Athlons even using the
fastest CPU for this particular application?

Since I am not an expert in computer architectures I would appreciate more
details about importance of sustained, sequential dram bandwidth for
numerically intensive calculations.

Ivan

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On Wed, 19 Jun 2002, Mark Hahn wrote:

> > What I found is that Xeon 2.2 GHz is 1.5 times faster! than any athlons I
> > tested. But the most strange thing is all these athlons: MP 1200, MP 1900,
> > MP 2100 give approximately the same timing within 5%. This is completely
> > above my comprehension.
> > 
> > Did someone encounter such a strange pattern and what can be a source of
> > this behavior?
> 
> you have successfully measured sustained, sequential dram bandwidth ;)
> 
> 

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Ivan I. Oleynik                       E-mail : oleynik at chuma.cas.usf.edu
Department of Physics
University of South Florida
4202 East Fowler Avenue                  Tel : (813) 974-8186
Tampa, Florida 33620-5700                Fax : (813) 974-5813
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