HP XC System 2.x Software - Manual (Page 97)

This example runs the job exactly the same as in Example 2, but additionally requests that
node
n3 is not to be used to run the job. Note that this command could have been written to
exclude additional nodes.
7.4.3 Submitting a Serial Job
The synopsis of the bsub command to submit a serial (single CPU) job to LSF-HPC is:
bsub [ bsub-options ] [ srun [ srun-options ]] jobname [ job-options ]
The bsub command launches the job.
The srun command is only necessary to launch the job on the allocated node if the HP XC JOB
STARTER script is not configured. to run a job on the compute nodes in the lsf partition.
The jobname argument is the name of an executable file.
Consider an HP XC system configuration in which lsfhost.localdomain is the LSF
execution host and nodes n[1-10] are compute nodes in the lsf partition. All nodes contain
two processors, providing 20 processors for use by LSF jobs. Example 7-5 shows one way to
submit a parallel job on this system.
Example 7-5: Submitting an Interactive Serial Job
$ bsub -I hostname
Job <73> is submitted to default queue .
<>
<>
n1
This command runs the serial hostname job interactively on a compute node ( n1 ). The -I
option specifies interactive; output appears on your display.
7.4.4 Submitting a Job in Parallel
The synopsis of the bsub command, which submits a job to run in parallel to LSF-HPC, is:
bsub -n num-procs [ bsub-options ] srun [ srun-options ] jobname [ job-options ]
The bsub command submits the job to LSF-HPC.
The -n num-procs option specifies to LSF-HPC the number of CPUs to be reserved for
use by the job.
The srun command is the user job launched by LSF-HPC. The srun command is used to
launch the jobname in parallel on the reserved CPUs on the allocated nodes.
The jobname is the name of the executable file to be run in parallel.
7.4.5 Submitting an HP-MPI Job
The synopsis of the bsub command to submit a job to run in parallel to LSF-HPC is as follows:
bsub-n num-procs [ bsub-options ] mpijob
The mpijob argument has the following format:
mpirun [ mpirun--options ] [ - srun [ srun-options ]] mpi-jobname
The mpirun command’s -srun option is only required if the MPI_USESRUN environment
variable is not set or if you want to use additional srun options to execute your job. See
Chapter 8 for more information on the mpirun command.
Using LSF 7-13