Platform LSF Administration Guide Version 6.2

Tuning LIM
Administering Platform LSF
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Tuning LIM
LIM provides critical services to all LSF components. In addition to the timely collection
of resource information, LIM provides host selection and job placement policies. If you
are using Platform MultiCluster, LIM determines how different clusters should
exchange load and resource information. You can tune LIM policies and parameters to
improve performance.
LIM uses load thresholds to determine whether to place remote jobs on a host. If one
or more LSF load indices exceeds the corresponding threshold (too many users, not
enough swap space, etc.), then the host is regarded as busy and LIM will not recommend
jobs to that host. You can also tune LIM load thresholds.
You can also change default LIM behavior and pre-select hosts to be elected master to
improve performance.
In this section
◆ “Adjusting LIM Parameters” on page 555
◆ “Load Thresholds” on page 556
◆ “Changing Default LIM Behavior to Improve Performance” on page 559