Add Optimization Parameters to lsb.params

During installation of the Sun HPC ClusterTools 3.0 packages, you are asked if you want to modify the lsb.params file to optimize interactive batch response time. If you answered yes, the SUNWrte package makes the following changes to the lsb.params file:

MBD_SLEEP_TIME=1
MAX_SBD_FAIL=30
JOB_ACCEPT_INTERVAL=0

The first parameter, MBD_SLEEP_TIME, specifies the number of seconds LSF Batch will wait between attempts to dispatch jobs. The default is 60 seconds. SUNWrte changes the interval to 1 second.

The MAX_SBD_FAIL parameter specifies how many times LSF Batch will try to reach an unresponsive slave batch daemon before giving up. MBD_SLEEP_TIME controls the frequency of these attempts. If MAX_SBD_FAIL is not specified, its default value is three times the MBD_SLEEP_TIME value. SUNWrte sets MAX_SBD_FAIL to 30.

The JOB_ACCEPT_INTERVAL parameter specifies how many MBD_SLEEP_TIME periods LSF Batch will wait after successfully dispatching a job to a host before it dispatches another job to the same host. SUNWrte sets this parameter to 0, allowing the host to accept multiple jobs in each job dispatching period (MBD_SLEEP_TIME).

If you answered no during the installation, but now wish to enable these optimizations, simply edit these parameters in the lsb.params file as shown above.