10.8. Launching with LSF
Open MPI supports the LSF resource manager.
10.8.1. Verify LSF support
prte_info command can be used to determine whether or not an
installed Open MPI includes LSF support:
shell$ prte_info | grep lsf
If the Open MPI installation includes support for LSF, you should see a line similar to that below. Note the MCA version information varies depending on which version of Open MPI is installed.
MCA ras: lsf (MCA v2.1.0, API v2.0.0, Component v3.0.0)
PRRTE is the software layer that provides run-time
environment support to Open MPI. Open MPI typically hides most
PMIx and PRRTE details from the end user, but this is one place
that Open MPI is unable to hide the fact that PRRTE provides this
functionality, not Open MPI. Hence, users need to use the
prte_info command to check for LSF support (not
When properly configured, Open MPI obtains both the list of hosts and
how many processes to start on each host from LSF directly. Hence, it
is unnecessary to specify the
mpirun. Open MPI will use LSF-native mechanisms
to launch and kill processes (
ssh is not required).
# Allocate a job using 4 nodes with 2 processors per node and run the job on the nodes allocated by LSF
shell$ bsub -n 8 -R "span[ptile=2]" "mpirun mpi-hello-world"
This will run the MPI processes on the nodes that were allocated by LSF. Or, if submitting a script:
shell$ cat my_script.sh
shell$ bsub -n 8 -R "span[ptile=2]" < my_script.sh