Ticket 1637

Summary: Increase priority for a specific user
Product: Slurm Reporter: Hjalti Sveinsson <hjalti.sveinsson>
Component: SchedulingAssignee: Brian Christiansen <brian>
Status: RESOLVED INFOGIVEN QA Contact:
Severity: 4 - Minor Issue    
Priority: --- CC: brian, da, hjalti.sveinsson, kolbeinn.josepsson
Version: 14.03.5   
Hardware: Linux   
OS: Linux   
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Description Hjalti Sveinsson 2015-05-04 04:25:17 MDT 
Hello,

we want to know if there is any way for us to give one user more priority to the cluster so that user can submit jobs and get infront of the queue line.

If that is possible it would be good if you can give us information on how to do that or how to implement that into our Slurm cluster.

regards,
Hjalti Sveinsson
Comment 1 Brian Christiansen 2015-05-04 11:01:01 MDT 
Using the multifactor priority plugin and accounting, you can create a qos for the user and give the qos a higher priority.

http://slurm.schedmd.com/priority_multifactor.html

ex.
slurm.conf:
AccountingStorageType=accounting_storage/slurmdbd
PriorityType=priority/multifactor
PriorityWeightQOS=1000

Add the qos to accounting:
$ sacctmgr add qos special
 Adding QOS(s)
  special
 Settings
  Description    = QOS Name
Would you like to commit changes? (You have 30 seconds to decide)
(N/y): y

$ sacctmgr modify qos special set priority=100
 Modified qos...
  special
Would you like to commit changes? (You have 30 seconds to decide)
(N/y): y

$ sacctmgr show qos special format=name,priority
      Name   Priority 
---------- ---------- 
   special        100 


Add the qos to the user association:
$ sacctmgr modify user brian set qos+=special
 Modified user associations...
  C = compy      A = normal               U = brian    
Would you like to commit changes? (You have 30 seconds to decide)
(N/y): y

$ sacctmgr show assoc where user=brian format=User,QOS
      User                  QOS 
---------- -------------------- 
     brian       normal,special 


Submit jobs using the qos:
$ sbatch --qos=special --wrap="sleep 600"
Submitted batch job 86

$ sprio
          JOBID   PRIORITY        AGE  FAIRSHARE    JOBSIZE  PARTITION        QOS
             83        576          0         67         10        500          0
             84        576          0         67         10        500          0
             85        576          0         67         10        500          0
             86       1638          0        133          6        500       1000


Let me know if you have any questions.

Thanks,
Brian
Comment 2 Brian Christiansen 2015-05-11 03:38:13 MDT 
Please reopen if you have any more questions.

Thanks,
Brian