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Monitoring Queues

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qstat qacct command qsub -- Submitting Jobs To Queue Instances qhost qmod qping SGE cheat sheet
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Pending Jobs Not Being Dispatched

Sometimes a pending job is obviously capable of being run, but the job does not get dispatched. To diagnose the reason, the grid engine system offers a pair of utilities and options, qstat -j job-id and qalter -w v job-id.

This command lists the reasons why a job is not dispatchable in principle. For this purpose, a dry scheduling run is performed. All consumable resources, as well as all slots, are considered to be fully available for this job. Similarly, all load values are ignored because these values vary.

Job or Queue Reported in Error State E

Job or queue errors are indicated by an uppercase E in the qstat output.

A job enters the error state when the grid engine system tries to run a job but fails for a reason that is specific to the job.

A queue enters the error state when the grid engine system tries to run a job but fails for a reason that is specific to the queue.

The grid engine system offers a set of possibilities for users and administrators to gather diagnosis information in case of job execution errors. Both the queue and the job error states result from a failed job execution. Therefore the diagnosis possibilities are applicable to both types of error states.

From queue information you get job information. After that you need to discover what's wrong with particular job. See Monitoring and Controlling Jobs

[0]root@mysite17: # qstat -q c12.q -u user1 job-ID prior name user state submit/start at queue slots ja-task-ID
310 0.50500 MS_93PGX user1 r 07/10/2012 14:36:59 c12.q@mysite52 12
311 0.50500 MS_93BT4 user1 qw 07/10/2012 14:44:15 12
312 0.50500 MS_93BUD user1 qw 07/10/2012 14:44:55 12
313 0.50500 MS_93PV9 user1 qw 07/10/2012 14:45:32 12
314 0.50500 MS_93JVR user1 qw 07/10/2012 14:45:46 12
315 0.50500 MS_93WW6 user1 qw 07/10/2012 14:46:04 12
316 0.50500 MS_93YWN user1 qw 07/10/2012 14:46:30 12
317 0.50500 MS_93PX0 user1 qw 07/10/2012 14:46:41 12
318 0.50500 MS_93NXC user1 qw 07/10/2012 14:46:47 12

Use qstat to show the current status of the queues and the jobs associated with the queues.

# qstat -g c
all.q 0.13 0 0 204 224 0 20
c12.q 0.01 0 0 0 12 0 12
c32.q 0.29 0 0 64 96 0 32
c40.q 0.00 0 0 80 80 0 0
m12a.q 0.01 0 0 0 12 0 12
m32a.q 0.86 32 0 0 32 0 0
m40a.q 0.00 0 0 40 40 0 0
m40b.q 0.00 0 0 40 40 0 0
job-ID  prior   name       user         state submit/start at     queue                 slots ja-task-ID 
    814 0.50500 cpdn02     beyerle      r     05/15/2006 21:04:57 background.q@merlin01       1        
    824 0.50500 cpdn12     beyerle      s     05/15/2006 21:05:12 background.q@merlin11       1        
   1238 0.60500 moldyPSI_j derlet       r     05/26/2006 14:45:27 long.q@merlin02            16        
  qstat -g t -u derlet  -- for given user
job-ID  prior   name       user         state submit/start at     queue                 master ja-task-ID 
   1238 0.60500 moldyPSI_j derlet       r     05/26/2006 14:45:27 long.q@merlin01          SLAVE         
                                                                  long.q@merlin01          SLAVE         
   1238 0.60500 moldyPSI_j derlet       r     05/26/2006 14:45:27 long.q@merlin02         MASTER        
                                                                  long.q@merlin02          SLAVE         
  qstat -F 
queuename                      qtype used/tot. load_avg arch          states
long.q@merlin01                BIP   2/4       5.05     lx24-amd64    
   1238 0.60500 moldyPSI_j derlet       r     05/26/2006 14:45:27     2        
qconf -tsm -- monitoring
clustering.gridengine.users - Re SGE jobs in qw state - msg#00017 -


Controlling Queues With qmod

You can use the qmod command to suspend and resume queues. You can also use qmod to disable and enable queues.

The following commands illustrate how to use qmod:

% qmod -s q-name
% qmod -us -f q-name1, q-name2
% qmod -d q-name
% qmod -e q-name1, q-name2, q-name3

qmod -s suspends a queue. qmod -us -f resumes (unsuspends) two queues. qmod -d disables a queue. qmod -e enables three queues.

The -f option forces registration of the status change in sge_qmaster when the corresponding sge_execd is not reachable, for example, due to network problems.

Suspending and resuming queues as well as disabling and enabling queues requires queue owner permission, manager permission, or operator permission. See Managers, Operators, and Owners.

Note -

You can use qmod commands with crontab or at jobs.


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