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Administering Platform LSF - SAS

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Load Thresholds<br />

Multiprocessor systems<br />

On multiprocessor systems, CPU run queue lengths (r15s, r1m, r15m) are<br />

compared to the effective run queue lengths as displayed by the lsload -E<br />

command.<br />

CPU run queue lengths should be configured as the load limit for a single<br />

processor. Sites with a variety of uniprocessor and multiprocessor machines<br />

can use a standard value for r15s, r1m and r15m in the configuration files, and<br />

the multiprocessor machines will automatically run more jobs.<br />

Note that the normalized run queue length displayed by lsload -N is scaled<br />

by the number of processors. See “Load Indices” on page 144 and<br />

lsfintro(1) for the concept of effective and normalized run queue lengths.<br />

486<br />

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

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