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Subject: [OMPI users] lammps MD code fails with Open MPI 1.3
From: Jeff Pummill (jpummil_at_[hidden])
Date: 2009-02-19 17:09:20

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.


Jeff F. Pummill
Senior Linux Cluster Administrator
TeraGrid Campus Champion - UofA
University of Arkansas