How to set a job level started jobs number limit for a user

Answer

The started jobs mean "RUN", "SSUSP and "USUSP" jobs. You can use "job group" feature. The steps are as below:

1. Create a job group

userA@HostA-170: bgadd /user1

Job group </user1> was added.

userA@HostA-172: bjgroup

GROUP_NAME NJOBS PEND RUN SSUSP USUSP FINISH SLA JLIMIT OWNER

/user1 0 0 0 0 0 0 () 0/- userA

2. Set a limit for the job group

userA@HostA-173: bgmod -L 10 /user1

Job group /user1 is modified.

userA@HostA-176: bjgroup -s /user1

GROUP_NAME NJOBS PEND RUN SSUSP USUSP FINISH SLA JLIMIT OWNER

/user1 0 0 0 0 0 0 () 0/10 userA

3. The number of running jobs can be limited if you submit the job to the job group

(1) I submitted 11 jobs and only 10 jobs can run at a time

userA@HostA-181: repeat 11 bsub -g /user1 sleep 1000

Job <2701> is submitted to default queue <normal>.

Job <2702> is submitted to default queue <normal>.

Job <2703> is submitted to default queue <normal>.

Job <2704> is submitted to default queue <normal>.

Job <2705> is submitted to default queue <normal>.

Job <2706> is submitted to default queue <normal>.

Job <2707> is submitted to default queue <normal>.

Job <2708> is submitted to default queue <normal>.

Job <2709> is submitted to default queue <normal>.

Job <2710> is submitted to default queue <normal>.

Job <2711> is submitted to default queue <normal>.

userA@HostA-182: bjobs

JOBID USER STAT QUEUE FROM_HOST EXEC_HOST JOB_NAME SUBMIT_TIME

2701 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2702 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2703 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2704 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2705 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2706 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2707 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2708 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2709 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2710 userA RUN normal HostA HostB sleep 1000 Aug 26 15:23

2711 userA PEND normal HostA sleep 1000 Aug 26 15:23

(2) Other jobs will pend due to reach the limit.

userA@HostA-183: bjobs -lp 2711

Job <2711>, User <userA>, Project <default>, Job Group </user1>, Status <PEND>,

Queue <normal>, Command <sleep 1000>

Fri Aug 26 15:23:09: Submitted from host <HostA>, CWD </tmp>;

PENDING REASONS:

The specified job group has reached its job limit;

userA@HostA-186: bjgroup -s /user1

GROUP_NAME NJOBS PEND RUN SSUSP USUSP FINISH SLA JLIMIT OWNER

/user1 11 1 10 0 0 0 () 10/10 userA

4. You can modify the limit any time with the command

bgmod -L <n> <group name>