[discuss] Re: [LinuxBIOS] NUMA support for dual core Opteron

[Li-Ta Lo]

On Thu, 2005-07-14 at 20:48 +0200, Andi Kleen wrote:
> > AFIAK, for x86_64 kernel, it will try to read NUMA configuration from
> > HW directory. We don't have to export any ACPI table.
> 
> It doesn't work for dual core or 8 sockets for some reason. Since the SRAT
> code works fine and is in general more future proof we never tracked down 
> why. Patches welcome. 
> 

Does each core has its own memory controller?

> However you'll likely need ACPI for other reasons anyways, e.g. for
> better power saving.
> 
> -Andi
> 
-- 
Li-Ta Lo <ollie at lanl.gov>
Los Alamos National Lab