On Apr 20, 2005, at 11:46 AM, Scott Neugroschl wrote:
% mpirun -v a.out mpirun: cannot parse: Exec format error
I admit that this is a horrid error message. :-(
What it's telling you is that mpirun didn't understand the command line. Specifically, you didn't tell it how many processes to run. I think you probably wanted:
mpirun -v C a.out
Where "C" means "run on all available CPUs listed in the current LAM universe." Other options include "N" (run one a.out per node in the universe) and "-np X" (run X copies, using per-CPU scheduling).
See "mpirun -h", the man page for mpirun(1), or the LAM/MPI User's Guide (http://www.lam-mpi.org/using/docs/) for more details on how to use mpirun.
Hope that helps.
--
{+} Jeff Squyres
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