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On Jun 5, 2007, at 10:27 AM, Prakash Velayutham wrote:
> I know. I could not start another client code before this. So just
> wanted to check if /bin/hostname works with the spawn.
It will not. MPI_COMM_SPAWN assumes that you are spawning an MPI
application and therefore after the process is launched, it tries to
do MPI-level coordination with it to setup new communicators, etc.
FWIW: MPI-2 says that you are *only* allowed to launch MPI processes
This could well be the error that you are seeing (I haven't tried it
myself to see what would happen).