I'm using Open MPI 1.6.5 to run OpenFOAM in parallel on 3 nodes. I'm allowed to open only a few TCP ports for security reasons. So I opened ports 49990-50009 for Open MPI and set the values in openmpi-mca-params.conf as follows:

btl_tcp_port_min_v4=49990    
btl_tcp_port_range_v4=10   
oob_tcp_static_ports=50000-50009 

When I ran mpirun, I got a message:

mca_oob_tcp_init: unable to create IPv4 listen socket: Unable to open a TCP socket for out-of-band communications.

Did I miss something? How can I set MPI to run a range of ports?