Administering Platform LSF - SAS

Chapter 34
Running Parallel Jobs
Preparing Your Environment to Submit Parallel Jobs to
LSF
Getting the host list
Example
Parallel job scripts
Using a job starter
Some applications can take this list of hosts directly as a command line
parameter. For other applications, you may need to process the host list.
The following example shows a /bin/sh script that processes all the hosts in
the host list, including identifying the host where the job script is executing.
#!/bin/sh
# Process the list of host names in LSB_HOSTS
for host in $LSB_HOSTS ; do
handle_host $host
done
Each parallel programming package has different requirements for specifying
and communicating with all the hosts used by a parallel job. LSF is not tailored
to work with a specific parallel programming package. Instead, LSF provides a
generic interface so that any parallel package can be supported by writing shell
scripts or wrapper programs.
LSF includes example shell scripts for running PVM (pvmjob), P4 (p4job), and
MPI (mpijob) programs as parallel batch jobs. These scripts are installed in the
LSF_BINDIR directory as defined in the lsf.conf file.
You can modify these scripts to support more parallel packages.
For more information, see:
◆ “Submitting Parallel Jobs” on page 432
You can configure the script into your queue as a job starter, and then all users
can submit parallel jobs without having to type the script name. See “Queue-
Level Job Starters” on page 376 for more information about job starters.
To see if your queue already has a job starter defined, run bqueues -l.
Administering Platform LSF 431