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Subject: [OMPI users] OpenMPI-1.2.7 + SGE
From: Sangamesh B (forum.san_at_[hidden])
Date: 2008-11-04 10:54:46

Hi all,

     In Rocks-5.0 cluster, OpenMPI-1.2.6 comes by default. I guess it
gets installed through rpm.

    # /opt/openmpi/bin/ompi_info | grep gridengine
                 MCA ras: gridengine (MCA v1.0, API v1.3, Component v1.2.6)
                 MCA pls: gridengine (MCA v1.0, API v1.3, Component v1.2.6)

     Now I've to install OpenMPI-1.2.7. The "./configure --help | grep
gridengine" - doesn't show anything.

     In such scenario how OpenMPI-1.2.7 can be integrated to SGE?

    After achieving this integration:

     1. Is it possible to use -machinefile option in the SGE script?

             #$ -pe orte 4

            /opt/openmpi/bin/mpirun -machinefile $TMPDIR/machines -np
4 <executable>

     2. If "qstat -f" is showing 2 slots on node1 and 2 slots on node2
for a 4 process openmpi job, then will these processes run exactly on
those nodes?

# qconf -sp orte
pe_name orte
slots 999
user_lists NONE
xuser_lists NONE
start_proc_args /bin/true
stop_proc_args /bin/true
allocation_rule $fill_up
control_slaves TRUE
job_is_first_task FALSE
urgency_slots min

Thank you,
Consultant - HPC