[Beowulf] Which Xeon supports NUMA?

Jan Heichler jan.heichler at gmx.net
Tue Mar 18 13:18:09 PDT 2008

Hallo Carsten,

Dienstag, 18. März 2008, meintest Du:

CA> Hi John,

CA> John Leidel wrote:
>> This should be an option in your kernel.  Check to see if you have this
>> enabled [assuming you are running some sort of Linux varient]

CA> Sorry, I came up with this question because when compiling 
CA> (linux kernel) I came across these lines:

CA> For x86_64 this is recommended on all multiprocessor Opteron systems. 

CA> If the system is EM64T, you should say N unless your system is 
CA>                                                     EM64T NUMA.

CA> Therefore the question if our Xeon E5345 or Xeon X3220 are EM64T NUMA or
CA> just EM64T.

CA> Sorry for not being more clear initially.

Could it be that there is already code for the upcoming Nehalem CPU in the kernel? Is intel maybe providing code? I asked a few people who have good knowledge about technologies and linux and this was the only explanation that came up.

Cheers, Jan                            
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