trying to run on 2 nodes but finally ending on one

Hello,

On our cluster I get the message when I try to run on 32 cores on two nodes (each node has 16 cores):

HP-MPI licensed for Accelrys.

Host 0 -- ip 192.168.10.8 -- ranks 0 - 31
host | 0
======|======
    0 : SHM
Prot -  All Intra-node communication is: SHM

torque.sh is:

#!/bin/sh -f

# This file is submitted to the queuing system

# The command for the job submission:

# qsub -V  -N MS_9MPIA     -l nodes=2:ppn=16 -q default torque.sh

# Appropriate environment should be set before the job submission

...

and machines.LINUX.txt contain two nodes:

cn-mpi07

cn-mpi06

The job is running on only one node named Host 0.

I suppose that's because of HP-MPI not properly set up.

Can anyone give me some more clues ?

Thank you,

Calin Gabriel Floare