[Beowulf] bizarre scaling behavior on a Nehalem

Tru Huynh tru at pasteur.fr
Sat Aug 15 10:28:23 EDT 2009


On Wed, Aug 12, 2009 at 01:16:02PM -0500, Rahul Nabar wrote:
> We didn't. We used the latest from the CentOS website.

Then something is not configured properly, the latest 
CentOS-5 kernel is kernel-2.6.18-128.4.1.el5.x86_64.

Linux darwin.localdomain 2.6.18-128.4.1.el5 #1 SMP Tue Aug 4 20:19:25 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

2.6.18-128.el5 is the GA released version for 5.3, not the current version
see 
http://mirror.centos.org/centos/5/os/x86_64/CentOS
http://mirror.centos.org/centos/5/updates/x86_64/RPMS/

Tru
-- 
Dr Tru Huynh          | http://www.pasteur.fr/recherche/unites/Binfs/
mailto:tru at pasteur.fr | tel/fax +33 1 45 68 87 37/19
Institut Pasteur, 25-28 rue du Docteur Roux, 75724 Paris CEDEX 15 France  
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