jody wrote:

Thanks for your reply.

If i try your suggestion, every process fails with the following message:

*** The MPI_Init() function was called before MPI_INIT was invoked.
That's a funny error message. If you search the OMPI users mail list archives, this message shows up, but I didn't spend long enough to see if those e-mails are actually relevant to your inquiry or whether they help. http://www.open-mpi.org/community/lists/users/

*** This is disallowed by the MPI standard.
*** Your MPI job will now abort.
[aim-triops:15460] Abort before MPI_INIT completed successfully; not
able to guarantee that all other processes were killed!

I think this is caused by the fact that on the 64Bit machine Open MPI
is also built as a 64 bit application.
How can i force OpenMPI to be built as a 32Bit application on a 64Bit machine?

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