[Beowulf] [gorelsky@stanford.edu: CCL:dual-core Opteron 275performance]

[Kozin, I (Igor)]

It's great to see someone is brave enough to publish 
a Gaussian benchmark.

On the other hand the results are predictable:
since the Xeon scales linearly from one to two
you'd expect the Opteron to scale well too, wouldn't you?
So the factor 1.95 comes from a comparison of four
and two "cores" on a test which apparently performs
well out of cache.

 
> To add to the discussion about the performance of new dual-core
> processors for computational chemistry applications,
> 
> the comparison of Intel and AMD dual-CPU based computers is shown at:
> 
> http://www.sg-chem.net/cluster/
> 
> As can be seen from the graph, the Gaussian 03 execution 
> speed (test job
> 397) on dual-core dual-CPU Opteron 275 workstation is faster 
> by a factor of 1.95
> as compared to the dual-CPU Xeon 3.2GHz 800MHz FSB machine.
> 
> -----------------
> 
> I would like to thank Ed Gasiorowski (AMD) and Mike Fay (Colfax
> International) for their support.
> 
> Serge Gorelsky
> 
> ----------------------------------------------------------------
>  Dr S.I. Gorelsky, Department of Chemistry, Stanford University
>  Box 155, 333 Campus Drive, Stanford, CA 94305-5080 USA
>  Phone: (650) 723-0041. Fax: (650) 723-0852.
> ----------------------------------------------------------------
>