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Subject: Re: [OMPI users] How do I run OpenMPI safely on a Nehalem standalone machine?
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2010-05-06 13:39:04

On May 6, 2010, at 1:11 PM, Gus Correa wrote:

> Just for the record, I am using:
> Open MPI 1.4.2 (released 2 days ago), gcc 4.4.3 (g++, gfortran).
> All on Fedora Core 12, kernel #1 SMP.

Someone asked earlier in this thread -- I've used RHEL4.4 and RHEL5.4 on my Nehalem EP boxen. I used the default gcc on those RHELs for compiling everything (OMPI + apps). I don't remember what it was on RHEL 4.4, but on RHEL 5.4, it's GCC 4.1.2.

> You and Jeff reported that your
> Nehalems get along with Open MPI.
> I would guess other people have functional Open MPI + Nehalem systems.
> All I can think of is that some mess with the OS/gcc is causing
> the trouble here.

I don't have much experience with kernels outside of the RHEL kernels, so I don't know if 2.6.32 is problematic or not. :-(

Jeff Squyres
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