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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.
When enabled, qstat -j job-id provides a list of reasons why a certain job was not dispatched in the last scheduling run. This monitoring can be enabled or disabled. You might want to disable monitoring because it can cause undesired communication overhead between the schedd daemon and qmaster. See schedd_job_info in the sched_conf(5) man page. The following example shows output for a job with the ID 242059:
% qstat -j 242059 scheduling info: queue "fangorn.q" dropped because it is temporarily not available queue "lolek.q" dropped because it is temporarily not available queue "balrog.q" dropped because it is temporarily not available queue "saruman.q" dropped because it is full cannot run in queue "bilbur.q" because it is not contained in its hard queuelist (-q) cannot run in queue "dwain.q" because it is not contained in its hard queue list (-q) has no permission for host "ori"
This information is generated directly by the schedd daemon. The generating of this information takes the current usage of the cluster into account. Sometimes this information does not provide what you are looking for.
For example, if all queue slots are already occupied by jobs of other users, no detailed message is generated for the job you are interested in.
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 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.
Messages files. If no administrator mail is available, you should investigate the qmaster messages file first. You can find entries that are related to a certain job by searching for the appropriate job ID. if SGE is installed in /sge, the qmaster messages file is
# find . -name messages ./default/spool/mysite53/messages ./default/spool/qmaster/messages ./default/spool/wx3481-ustc/messages ./default/spool/mysite17/messages ./default/spool/mysite54/messages ./default/spool/mysite16/messages ./default/spool/mysite52/messages
You can sometimes find additional information in the messages of the execd daemon from which the job was started. Use qacct -j job-id to discover the host from which the job was started, and search in sge-root/cell/spool/host/messages for the job ID.
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 CLUSTER QUEUE CQLOAD USED RES AVAIL TOTAL aoACDPS cdsuE -------------------------------------------------------------------------------- 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
qstat
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
hl:load_avg=5.050000
hl:load_short=5.080000
hl:load_medium=5.050000
hl:load_long=4.950000
hl:arch=lx24-amd64
hl:num_proc=4
hl:mem_free=7.174G
hl:swap_free=1.944G
hl:virtual_free=9.118G
hl:mem_total=7.674G
hl:swap_total=1.946G
hl:virtual_total=9.619G
hl:mem_used=511.656M
hl:swap_used=1.422M
hl:virtual_used=513.078M
hl:cpu=100.000000
hl:np_load_avg=1.262500
hl:np_load_short=1.270000
hl:np_load_medium=1.262500
hl:np_load_long=1.237500
hc:slots=0
qf:qname=long.q
qf:hostname=merlin01
qf:tmpdir=/tmp
qf:seq_no=0
qf:rerun=0.000000
qf:calendar=NONE
qf:s_rt=2:00:00:00
qf:h_rt=2:00:30:00
qf:s_cpu=1:00:00:00
qf:h_cpu=1:00:00:00
qf:s_fsize=infinity
qf:h_fsize=infinity
qf:s_data=infinity
qf:h_data=infinity
qf:s_stack=infinity
qf:h_stack=infinity
qf:s_core=infinity
qf:h_core=infinity
qf:s_rss=infinity
qf:h_rss=infinity
qf:s_vmem=infinity
qf:h_vmem=infinity
qf:min_cpu_interval=00:05:00
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 - OSDir.com
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.
You can use qmod commands with crontab or at jobs.
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