Administering Platform LSF - SAS

User-Assigned Job Priority
User-Assigned Job Priority
Considerations
User-assigned job priority provides controls that allow users to order their jobs
in a queue. Job order is the first consideration to determine job eligibility for
dispatch. Jobs are still subject to all scheduling policies regardless of job
priority. Jobs with the same priority are ordered first come first served.
The job owner can change the priority of their own jobs. LSF and queue
administrators can change the priority of all jobs in a queue.
User-assigned job priority is enabled for all queues in your cluster, and can be
configured with automatic job priority escalation to automatically increase the
priority of jobs that have been pending for a specified period of time.
The btop and bbot commands move jobs relative to other jobs of the same
priority. These commands do not change job priority.
In this section ◆ “Configuring job priority” on page 296
◆ “Specifying job priority” on page 297
◆ “Viewing job priority information” on page 297
Configuring job priority
Syntax
Example
To configure user-assigned job priority edit lsb.params and define
MAX_USER_PRIORITY. This configuration applies to all queues in your cluster.
Use bparams -l to display the value of MAX_USER_PRIORITY.
MAX_USER_PRIORITY=max_priority
Where:
max_priority
Specifies the maximum priority a user can assign to a job. Valid values are
positive integers. Larger values represent higher priority; 1 is the lowest.
LSF and queue administrators can assign priority beyond max_priority.
MAX_USER_PRIORITY=100
Specifies that 100 is the maximum job priority that can be specified by a user.
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Administering Platform LSF