Hi there: I'm trying to install an old version of openmpi 1.1.1 on a 32 bit cluster and running a program with it.  This program runs fine for another 64 bit cluster which has openmpi 1.1.1 installed, but when running this on the 32 bit cluster, I get the following error: /var/spool/pbs/mom_priv/jobs/282832.borg.SC: line 37: 13154 Segmentation fault      (core dumped) /ul/tedhyu/openmpi/openmpi-1.1.1/install/bin/mpirun -machinefile ${PBS_NODEFILE} -np ${NPROCS} ${CODE} Has anybody encountered this error before?  If you have any advice, it would be much appreciated. Regards, Ted