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@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
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--
Jeff Squyres
Cisco Systems
