Opteron 32-bit or 64-bit

[Miller, Marc]

Most existing 32-bit applications should run on the 64-bit version of
the OS.  Even if you don't have 64-bit applications, 64-bit RHEL 3 has
better NUMA scheduling and optimization than the 32-bit version of the
same operating system.  So in the general case, you will get better
performance from the 64-bit OS on Opteron than you do from a 32-bit OS.

 

________________________________

From: amd64-list-bounces at redhat.com
[mailto:amd64-list-bounces at redhat.com] On Behalf Of Jason DePaul
Sent: Tuesday, January 25, 2005 11:44 AM
To: amd64-list at redhat.com
Subject: Opteron 32-bit or 64-bit

 

Hi All:

I am in the process of purchasing 40 nodes for a calculation cluster for
my company.  We going to purchase Opteron based servers.  My question
is, will I take full advantage of the servers if I installed the 32-bit
version of RHEL 3 ES? Do I need to install the 64-bit version of the
either ES or AS to fully utilize the Opteron systems.  

Will existing 32-bit applications run on the 64-bit version of the OS on
the Opteron.

Thanks and best regards

JD


 

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