Yes. Most of locality info comes from /sys/... on Linux.
Brice
Le 29/09/2014 22:59, Vishwanath Venkatesan a écrit :
> Thanks for the quick response, yes lstopo -l does make the numbers
> contiguous.
> Another question I had was, how does hwloc populate the information
> that certain cpus share a particular cache?
> is it form sys/.../cache/index*/shared_cpu_list?
>
> Thanks
> Vish
>
> On Mon, Sep 29, 2014 at 1:47 PM, Samuel Thibault
> <samuel.thiba...@inria.fr <mailto:samuel.thiba...@inria.fr>> wrote:
>
> Vishwanath Venkatesan, le Mon 29 Sep 2014 13:38:35 -0700, a écrit :
> > I was trying to use HWLOC on Ivybridge. I found that there is some
> > inconsistency in the core numbering.
> >
> > In the attached image (generated from running lstopo (hwloc -
> 1.9.1), we can
> > see that cores 6,7 do not exist although, PU#6 and PU#7 does exist.
>
> I am not very surprised. Those are physical numbers, which BIOS &
> such determine
> in various ways, which may not be contiguous. If you are looking
> for a
> contiguous numbering, you need to have a look at the logical
> numbers, obtained
> from lstopo -l.
>
> Samuel
>
>
>
>
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