IBM LoadLeveler for AIX 5L: Using and Administering

llpreempt - Preempt a submitted job step

Purpose

Places a specified job step in the (user-initiated) preempted state. The job step will stay in that state until the action is undone with the -u flag. After the undo operation, the job step resumes its normal state controlled by the LoadLeveler scheduling and preemption rules.

Syntax

llpreempt { -? | -H | -v | [-q] [-u] <jobstep>}

Flags

-?

Provides a short usage message.

-H

Provides extended help information.

-v

Outputs the name of the command, release number, service level, service level date, and operating system used to build the command.

-q

Specifies quiet mode: print no messages other than error messages.

-u

Undo the previous preempt action.

jobstep

Is the name of a job step to be preempted or resumed. Uses the form host.jobid.stepid where:

• host: The name of the schedd machine to which the job step was submitted. The default is the local machine.
• jobid: The job ID assigned to the job when it was submitted using the llsubmit command. A jobid is required.
• stepid: The step ID assigned to the job when it was submitted using the llsubmit command. A stepid is required.

Description

This is a LoadLeveler administrator command used for Gang and external schedulers only. Regular users do not have authority to execute this command.

Examples

This example requests that job step c163n07.12.0 be preempted:

llpreempt c163n07.12.0

This example requests that job step c163n07.12.0 be resumed:

llpreempt -u c163n07.12.0

Results

The following shows a sample system response for the llpreempt command:

 llpreempt: request has been sent to LoadLeveler.