[Beowulf] Intel Quad-Core or AMD Opteron

[Toon Knapen]

> I understand that, when comparing Quad-Core Xeons with Opterons,
> people focus on the scability issues of the different multi core
> architectures, but we've run some benchmarks on both and the thing
> that at the time surprised me the most was that if your application
> makes much use of the functions provided by Intel Math Kernel Library,
> a single Xeon core (e.g Clovertown) can be up to twice as fast as a
> single Opteron core.


You are comparing Intel MKL on Xeon with what exactly on Opteron? Intel 
MKL on Opteron is certainly not optimal. I hope you compared to GotoBLAS 
on Opteron.

t