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Subject: Re: [OMPI users] lammps MD code fails with Open MPI 1.3
From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2009-02-19 21:37:44

Is it possible to attach to any of the MPI processes and see where it
is hung?

On Feb 19, 2009, at 5:09 PM, Jeff Pummill wrote:

> I built a fresh version of lammps v29Jan09 against Open MPI 1.3
> which in turn was built with Gnu compilers v4.2.4 on an Ubuntu 8.04
> x86_64 box. This Open MPI build was able to generate usable binaries
> such as XHPL and NPB, but the lammps binary it generated was not
> usable.
> I tried it with a couple of different versions of the lammps source,
> but to no avail. No errors during the builds and a binary was
> created, but when executing the job it quickly exits with no
> messages other than:
> jpummil_at_stealth:~$ mpirun -np 4 -hostfile hosts /home/jpummil/
> lmp_Stealth-OMPI < in.testbench_small
> LAMMPS (22 Jan 2008)
> Interestingly, I downloaded Open MPI 1.2.8, built it with the same
> configure options I had used with 1.3, and it worked.
> I'm getting by fine with 1.2.8. I just wanted to file a possible bug
> report on 1.3 and see if others have seen this behavior.
> Cheers!
> --
> Jeff F. Pummill
> Senior Linux Cluster Administrator
> TeraGrid Campus Champion - UofA
> University of Arkansas
> _______________________________________________
> users mailing list
> users_at_[hidden]

Jeff Squyres
Cisco Systems