MPI passwords

I’m using mpich1 with PGI Fortran 10.6 on a Red Hat linux workstation with one processor and four cores. When I execute mpirun -np n, I get n-1 requests for my user password. The program then executes normally.

Obvously, having to enter my password for each slave process is a nuisance. Any way around this?

This sounds like you need to set up passwordless SSH on your local machine. This link contains a good howto (if you already have an SSH key, DSA or RSA, you might only need to do the second step with authorized_keys).

Thanks a lot, Matt.