Any hints on what to look for to get the second machine to behave without duplicate independent processes?
"mpirun -np 2 ..." Provides as expected: "Using MPI version 2.1, 2 processes .1. .2." While on another similar machine: "Using MPI version 2.2, 1 processes .1. Using MPI version 2.2, 1 processes .1. .2. .2." On both: /usr/lib64/openmpi/1.4-gcc/bin/mpirun --version Returns: mpirun (Open MPI) 1.4 I looked in the FAQ and searched the list but did not find it yet. When I worked with MPICH2 I also had this happen from time to time. I can provide additional information should it not be as common here.
