That's what I suspected. I suggest you talk to your sys admin about how PBS is configured - looks like you are only getting one node allocated despite your request for two. Probably something in the config needs adjusting.
On Jun 15, 2010, at 7:20 AM, Govind Songara wrote: > I added the $PBS_NODEFILE in the script in my last email below. > It show only one node here is the output > =============== > node47.beowulf.cluster node47.beowulf.cluster node47.beowulf.cluster > node47.beowulf.cluster > This job has allocated 4 nodes > Hello World! from process 1 out of 4 on node47.beowulf.cluster > Hello World! from process 2 out of 4 on node47.beowulf.cluster > Hello World! from process 3 out of 4 on node47.beowulf.cluster > Hello World! from process 0 out of 4 on node47.beowulf.cluster > =============== > > On 15 June 2010 13:41, Ralph Castain <r...@open-mpi.org> wrote: > Look at the contents of $PBS_NODEFILE and see how many nodes it contains. > > On Jun 15, 2010, at 3:56 AM, Govind Songara wrote: > >> Hi, >> >> I have using openmpi build with tm support >> When i run the job requesting for two nodes it run only on single node. >> Here is my script. >> >cat mpipbs-script.sh >> #PBS -N mpipbs-script >> #PBS -q short >> ### Number of nodes: resources per node >> ### (4 cores/node, so ppn=4 is ALL resources on the node) >> #PBS -l nodes=2:ppn=4 > >> echo `cat $PBS_NODEFILE` >> NPROCS=`wc -l < $PBS_NODEFILE` >> echo This job has allocated $NPROCS nodes > > /opt/openmpi-1.4.2/bin/mpirun /scratch0/gsongara/mpitest/hello > > > torque config > set queue short resources_max.nodes = 4 > set queue short resources_default.nodes = 1 > set server resources_default.neednodes = 1 > set server resources_default.nodect = 1 > set server resources_default.nodes = 1 > > Can someone please advise if i missing anything here. > > Regards > Govind >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
