[MPICH] mpirun vs. mpiexec

Anthony Chan chan at mcs.anl.gov
Tue Jun 5 18:59:49 CDT 2007

On Tue, 5 Jun 2007, Steve Young wrote:

> I guess what still puzzles me is what is the difference between them
> (mpiexec and mpirun)? Why couldn't mpirun be written so it could be
> given an argument of -machinefile? Or rather why are there two programs
> anyhow?


mpiexec is a replacement of mpirun (which is provided in mpich2 for
backward compatibility reason)


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