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From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2007-04-03 12:30:59

On Apr 2, 2007, at 12:53 PM, Prakash Velayutham wrote:

> prakash_at_wins04:~/thesis/CS/Samples>mpirun -np 4 --bynode --hostfile
> machinefile ./parallel.laplace
> [wins01:17699] *** An error occurred in MPI_Comm_spawn
> [wins01:17699] *** on communicator MPI_COMM_WORLD
> [wins01:17699] *** MPI_ERR_ARG: invalid argument of some other kind
> [wins01:17699] *** MPI_ERRORS_ARE_FATAL (goodbye)
> mpirun noticed that job rank 1 with PID 25074 on node wins02 exited
> on signal 15 (Terminated).
> 2 additional processes aborted (not shown)

This could be one of several issues:

- An outright bad parameter to MPI_COMM_WORLD (e.g., a bogus
- A subtly-bad parameter to MPI_COMM_WORLD (e.g., the parameters all
passed the first-order check [e.g., bozo checks for NULL], but then
something later in the process determined that it was an invalid value)
- Something else altogether

Can you make a small example that shows this same problem and send it
to the list?

Jeff Squyres
Cisco Systems