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Subject: Re: [hwloc-devel] Open MPI + hwloc: move to 1.3.1?
From: Paul H. Hargrove (PHHargrove_at_[hidden])
Date: 2011-12-16 16:25:05

 From my point of view the option of using an external hwloc for OMPI
eliminates the need to be overly concerned about back-ports for
OMPI-1.5. If I really need hwloc w/ my RHL8 (dual-socket/single-core)
systems, then I'll build hwloc-1.3.x (w/ patches if needed) and point my
OMPI build at it.

I have no opinion on what belongs in OMPI 1.6 or 1.7.


On 12/16/2011 7:03 AM, Jeff Squyres wrote:
> There have been a bunch of updates that have (rightfully) not been back-ported to the 1.2-ompi branch.
> Is 1.3.x stable/mature enough for me to move into OMPI?
> I have two targets:
> * Open MPI v1.5 series: we're just about to release the final Open MPI 1.5.x and transition it to the v1.6 series (i.e., bug fixes only after it is renumbered to 1.6). Is hwloc 1.3.x a good candidate here? As Paul noted, without some of the recent fixes, OMPI 1.5.5 won't run on older Linuxes (e.g., Fedora 8).
> * Open MPI trunk (which will eventually become the v1.7 series): it's ok to be a bit more forward-looking here. I'm actually pretty convinced that this one should be upgraded to hwloc 1.3.1 (or whatever the latest set of fixes is) in the near future.
> Thoughts?

Paul H. Hargrove                          PHHargrove_at_[hidden]
Future Technologies Group
HPC Research Department                   Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900