[Beowulf] recommendations for cluster upgrades

Greg Lindahl lindahl at pbm.com
Sat May 16 21:37:14 EDT 2009


On Sun, May 17, 2009 at 12:54:58AM +0100, Tiago Marques wrote:

> I don't think that GCC compilers are that well optimized for Opterons, which
> may be a reason why some AMD clusters are using Pathscale compilers.

gcc on Opteron is, relatively speaking, one of the best gcc ports. When
PathScale ported back to MIPS, they were able to beat gcc on that
processor by a much higher margin than on Opteron or Intel.

PathScale was always really good on VASP, by the way, I know we
clobbered Intel's compiler on Opteron, don't recall if we were
better than Intel's compiler on Intel's chips.

-- greg
who used to work for PathScale, way back when


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