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Subject: [OMPI users] perhaps an openmpi bug, how best to identify?
From: Olivier Marsden (Olivier.Marsden_at_[hidden])
Date: 2010-07-07 10:20:38

I am developing a fortran mpi code and currently testing it on my
so in a shared memory environment.
The (7 process) code runs correctly on my workstation using mpich2 (latest
stable version) & ifort 11.1, using intel-mpi & ifort 11.1, but
randomly hangs the
computer (vanilla ubuntu 9.10 kernel v. 2.6.31 ) to the point where only
a magic
sysrq combination can "save" me (i.e. reboot), when using
- openmpi 1.4.2 compiled from source with gcc, ifort for mpif90
- clustertools v. 8.2.1c distribution from sun/oracle, also based on
openmpi 1.4.2, using sun f90
  for mpif90

I am prepared to do some testing if that can help, but don't know the
best way to identify what's going on.
I have found no useful information in the syslog files.

Regards, & thanks for the work on a great open source tool,

Olivier Marsden