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Subject: Re: [OMPI users] core binding failure on Interlagos (and possibly Magny-Cours)
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2012-01-31 09:04:55


On Jan 31, 2012, at 8:49 AM, Brice Goglin wrote:

> Unless I am mistaken, OMPI 1.5.4 has hwloc 1.2

Correct.

> while 1.5.5 will have
> 1.2.2 or even 1.3.1. So don't use core binding on interlagos with
> OMPI<=1.5.4.

OMPI 1.5.5rc1 has hwloc 1.3.1 + a few SVN commits past it.

Per some off-list discussions, we'll probably do an hwloc 1.3.2 release Real Soon Now to clean up/release all post-1.3.1 fixes, and then sync that to Open MPI 1.5.5.

> Note that magny-Cours processors are OK, cores are "normal" there.
>
> FWIW, the Linux kernel (at least up to 3.2) still reports wrong L2 and
> L1i cache information on AMD Bulldozer. Kernel bug reported at
> https://bugzilla.kernel.org/show_bug.cgi?id=42607

-- 
Jeff Squyres
jsquyres_at_[hidden]
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