You might want to peruse the Open MPI FAQ area:

http://www.open-mpi.org/faq/

Particularly:

http://www.open-mpi.org/faq/?category=running

and

http://www.open-mpi.org/faq/?category=rsh


On Aug 8, 2008, at 10:50 AM, Rayne wrote:

If you have other machines on the network, you have to
configure them
such that you can start remote processes on them.
When you use "mpirun" to launch your MPI code you
need to give the names
of those machines as a parameter to mpirun - it is known as
a "machines
file".

John Hearns

Do I put the IP addresses of machines I want to use in the machine file? And do I need to use the machine file everytime I run the MPI program?

Regards,
Rayne


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