Platform LSF Running Jobs Version 6.2

Changing Job Order Within Queues (bbot and btop)

Running Jobs with Platform LSF

Changing Job Order Within Queues (bbot and btop)

By default, LSF dispatches jobs in a queue in the order of arrival (that is,

first-come-first-served), subject to availability of suitable server hosts.

Use the

btop and bbot commands to change the position of pending jobs, or of

pending job array elements, to affect the order in which jobs are considered for dispatch.

Users can only change the relative position of their own jobs, and LSF administrators

can change the position of any users’ jobs.

Moving a job to the bottom of a queue

Use bbot to move jobs relative to your last job in the queue.

If invoked by a regular user,

bbot moves the selected job after the last job with the same

priority submitted by the user to the queue.

If invoked by the LSF administrator,

bbot moves the selected job after the last job with

the same priority submitted to the queue.

Moving a job to the top of a queue

Use btop to move jobs relative to your first job in the queue.

If invoked by a regular user,

btop moves the selected job before the first job with the

same priority submitted by the user to the queue.

If invoked by the LSF administrator,

btop moves the selected job before the first job

with the same priority submitted to the queue.

Example In the following example, job 5311 is moved to the top of the queue. Since job 5308 is

already running, job 5311 is placed in the queue after job 5308.

Note that user1’s job is still in the same position on the queue. user2 cannot use

btop to get extra jobs at the top of the queue; when one of his jobs moves up the

queue, the rest of his jobs move down.

% bjobs -u all

JOBID USER STAT QUEUE FROM_HOST EXEC_HOST JOB_NAME SUBMIT_TIME

5308 user2 RUN normal hostA hostD /s500 Oct 23 10:16

5309 user2 PEND night hostA /s200 Oct 23 11:04

5310 user1 PEND night hostB /myjob Oct 23 13:45

5311 user2 PEND night hostA /s700 Oct 23 18:17

% btop 5311

Job <5311> has been moved to position 1 from top.

% bjobs -u all

JOBID USER STAT QUEUE FROM_HOST EXEC_HOST JOB_NAME SUBMIT_TIME

5308 user2 RUN normal hostA hostD /s500 Oct 23 10:16

5311 user2 PEND night hostA /s200 Oct 23 18:17

5310 user1 PEND night hostB /myjob Oct 23 13:45

5309 user2 PEND night hostA /s700 Oct 23 11:04