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List: beowulf
Subject: Re: [Beowulf] Strange Opteron 2350 performance: Gaussian-03
From: Bernd Schubert <bernd-schubert () gmx ! de>
Date: 2008-06-28 17:04:50
Message-ID: 200806281904.50835.bernd-schubert () gmx ! de
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On Saturday 28 June 2008, Li, Bo wrote:
> Hello,
> Sorry, I don't have the same applications as you.
> Did you compile them with gcc? If gcc, then -o3 can do some optimization.
> -march=k8 is enough I think.
As Mikhail wrote in his first mail, he uses binaries from Gaussian Inc. Can
gfortran in the mean time compile gaussian? Even if it can, it might be a
problem for publications, since the only officially supported compiler is
pgf77.
Mikhail, do you have the source at all? Due to the different cache model of
the barcelona a recompilation might really help.
> And you make sure the CPU running at the default frequency. Sometime
Yeah, can you check the scaling governor isn't set to ondemand or
conservative?
Cheers,
Bernd
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