[Beowulf] Which Xeon supports NUMA?

Chris Samuel csamuel at vpac.org
Wed Mar 19 07:04:30 EDT 2008

----- "Carsten Aulbert" <carsten.aulbert at aei.mpg.de> wrote:

> Sorry, I came up with this question because when compiling 
> (linux kernel) I came across these lines:
> For x86_64 this is recommended on all multiprocessor Opteron systems.
> If the system is EM64T, you should say N unless your system is 
>                                                     EM64T NUMA.

Interestingly that text dates back to a modification for
2.6.14-rc5 back in 2005:


with a comment that says:

# CONFIG_K8_NUMA is not needed for Intel EM64T NUMA boxes

So either this was in the early days of CSI, or there are/were
other Intel AMD64 NUMA boxes out there that none of us know about..

Christopher Samuel - (03) 9925 4751 - Systems Manager
 The Victorian Partnership for Advanced Computing
 P.O. Box 201, Carlton South, VIC 3053, Australia
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