[prev in list] [next in list] [prev in thread] [next in thread] 

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
[Download RAW message or body]

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
_______________________________________________
Beowulf mailing list, Beowulf@beowulf.org
To change your subscription (digest mode or unsubscribe) visit \
http://www.beowulf.org/mailman/listinfo/beowulf


[prev in list] [next in list] [prev in thread] [next in thread]