Re: Opteron Nodes

On Thu, Jul 27, 2006 at 03:29:37PM +0200, Florian Delizy wrote:
> Did somebody test the oM2.6 on Opteron already ? (single core, dual
> core, or multi-processor or both) ?

amd64 is the main architecture of om2.6.

> By having a first look to the documentation of the main motherboard 
> vendor (K8SSA from
> Tyan), I may be wrong but it seems that a particularity of the 
> multi-processor architecture
> of the Opteron involve specific memory for certain processor, eg: you
> have 2 processors, P1 and P2, and two memory slots groups. P1 can access
> the first group only, but P2 can access all slots. Hence, in this
> configuration, if a task is running on the P2 address space, only the
> processor P2 can have access to its specific data (which also means,
> only processor P2 can migrate this process ...).

This is a normal NUMA machine. Hence the whole memory is accessible to any
nodes. It's just that some cpu nodes got faster access to certain memory
nodes. nothing we care really.

-- 
Vincent Hanquez

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