AMD64 NUMA-awareness?

Jung-uk Kim jkim at
Mon May 23 07:50:08 PDT 2005

On Monday 23 May 2005 01:22 am, David O'Brien wrote:
> On Thu, May 19, 2005 at 02:31:08PM -0400, Jung-uk Kim wrote:
> > I am not sure about the meaning of 'true NUMA capable machines'
> > but AMD64 is ccNUMA unless I am completely mistaken, and
> > FreeBSD/amd64 is well-supported.  Even multicore processors are
> > available now
> ..snip..
> I am working on extracting the CPU & memory topology on AMD Opteron
> machines.  For Athlon64 X2 (dual-core) there is nothing for FreeBSD
> to do differently than today.

Great.  I am assuming you're working on ACPI SRAT/SLIT parsing, 

> Once I have the ability to nicely express the topology on an
> Opteron system, there are two heavy hitters that have said they
> will consume the bits and work on optimizing FreeBSD for Opteron
> systems.

If you need any help, let me know.

> For Intel dual-core HTT systems, there aren't any NUMA
> characteristics I'm aware of.

I believe you are correct.

Jung-uk Kim

> -- 
> -- David  (obrien at

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