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Subject: Re: [hwloc-users] No caches or hiearchy on RHEL 4.7 or 4.8
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-01-28 13:41:54


I know that the RHEL 4 kernels are 2.6.9 -- they're really ancient. Most of the topology stuff didn't come into the kernel until 2.6.15 or so.

On Jan 28, 2010, at 1:40 PM, Brice Goglin wrote:

> Dan Eaton wrote:
>> Yes, the cpuid version works marvelously. The only thing it misses is memory/NUMA node (is it using libnuma?).
>>
>
> libnuma reads numa info exactly like hwloc does: from sysfs, i.e. it
> depends of the kernel. I don't know if we could try to read SRAT tables
> from userspace when the kernel exports wrong NUMA info...
>
> Brice
>
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-- 
Jeff Squyres
jsquyres_at_[hidden]