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Administering Platform LSF - SAS

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How <strong>LSF</strong> Runs Parallel Jobs<br />

How <strong>LSF</strong> Runs Parallel Jobs<br />

When <strong>LSF</strong> runs a job, the LSB_HOSTS variable is set to the names of the hosts<br />

running the batch job. For a parallel batch job, LSB_HOSTS contains the<br />

complete list of hosts that <strong>LSF</strong> has allocated to that job.<br />

<strong>LSF</strong> starts one controlling process for the parallel batch job on the first host in<br />

the host list. It is up to your parallel application to read the LSB_HOSTS<br />

environment variable to get the list of hosts, and start the parallel job<br />

components on all the other allocated hosts.<br />

<strong>LSF</strong> provides a generic interface to parallel programming packages so that any<br />

parallel package can be supported by writing shell scripts or wrapper<br />

programs.<br />

For information about writing parallel applications for use with the <strong>Platform</strong><br />

Parallel product, see Using <strong>Platform</strong> Parallel (OBSOLETE).<br />

430<br />

<strong>Administering</strong> <strong>Platform</strong> <strong>LSF</strong>

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