On Jan 31, 2012, at 6:18 AM, Dave Love wrote: > Core binding is broken on Interlagos with open-mpi 1.5.4. I guess it > also bites on Magny-Cours, but all our systems are currently busy and I > can't check. > > It does work, at least basically, in 1.5.5rc1, but the release notes for > that don't give any indication. Perhaps someone could mention > Interlagos in the notes, and any other hardware that might be affected > (presumably Magny-Cours and some Power if it's confusion introduced by > the extra NUMA level).
I think there was some weirdness in how AMD chips were represented to the Linux kernel (they present differently than Intel chips). I believe the issues have been worked out by hwloc. OMPI 1.5.4 uses an older version of hwloc (v1.2); 1.5.5rc1 was synced to a newer version of hwloc. Note: a) there's one more hwloc sync that's going to happen before 1.5.5 is released, and b) per https://svn.open-mpi.org/trac/ompi/ticket/2990, perhaps there's still some weirdness going on in OMPI 1.5.x's affinity code. -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
