Platform LSF Administration Guide Version 6.2

Dynamic User Priority
Administering Platform LSF
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cpu_time
The cumulative CPU time used by the user (measured in hours). LSF calculates the
cumulative CPU time using the actual (not normalized) CPU time and a decay factor
such that 1 hour of recently-used CPU time decays to 0.1 hours after an interval of time
specified by HIST_HOURS in
lsb.params (5 hours by default).
run_time
The total run time of running jobs (measured in hours).
job_slots
The number of job slots reserved and in use.
Configuring the default dynamic priority
You can give additional weight to the various factors in the priority calculation by setting
the following parameters in
lsb.params.
◆ CPU_TIME_FACTOR
◆ RUN_TIME_FACTOR
◆ RUN_JOB_FACTOR
◆ HIST_HOURS
If you modify the parameters used in the dynamic priority formula, it affects every
fairshare policy in the cluster.
CPU_TIME_FACTOR
The CPU time weighting factor.
Default: 0.7
RUN_TIME_FACTOR
The run time weighting factor.
Default: 0.7
RUN_JOB_FACTOR
The job slots weighting factor.
Default: 3
HIST_HOURS
Interval for collecting resource consumption history
Default: 5