[GE users] confirm seqno usage

reuti reuti at staff.uni-marburg.de
Mon Aug 24 13:05:40 BST 2009


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Hi,

Am 24.08.2009 um 11:27 schrieb jobic:

> igardais wrote:
>>
>> <!-- DIV {margin:0px;} -->
>> Hi,
>>
>> I recently changed the scheduler queue_sort_method to seqno.
>> However, when I'm submitting a job to a queue, the configured  
>> seq_no parameter does not seem to be used.
>>
>> Here is my current configuration :
>> ==sched conf (extract)==
>> algorithm                         default
>> schedule_interval                 0:0:10
>> maxujobs                          0
>> queue_sort_method                 seqno
>> job_load_adjustments              np_load_avg=0.50
>> load_adjustment_decay_time        0:7:30
>> load_formula                      np_load_avg
>> schedd_job_info                   true
>>
>> ==queue conf (extract)==
>> qname                 all.q
>> hostlist              @workstations
>> seq_no                100,[@br1st=200]

please try the opposite ordering:

seq_no 200,[@br1st=100]

-- Reuti


>> Hostgroup "@br1st" is a subset of hosts which also exist in the  
>> hostgroup "@workstations".
>>
>> The job :
>> $ qsub -b y -q all.q /bin/sleep 10
>> can land on any node of "@workstations" even if hostgroup "@br1st"  
>> has a higher seq_no.
>> What I expect is that jobs get scheduled first on "@br1st" then on  
>> "@workstations" if any "@br1st" are available.
>>
>> Is there a way to diagnose what is going on ?
>> Or do you have a wise advice ?
>>
>>
>> Thanks,
>> Ionel
> You may find usefull information here :
> http://gridengine.sunsource.net/ds/viewMessage.do? 
> dsForumId=38&viewType=browseAll&dsMessageId=201984#messagefocus
> http://gridengine.sunsource.net/ds/viewMessage.do? 
> dsForumId=38&viewType=browseAll&dsMessageId=115507#messagefocus
>
> You need to put priority on hosts. It's all explained in the links.
>
> Yann
>
>
> -- ___________________________ Yann JOBIC HPC engineer Polytech  
> Marseille DME IUSTI-CNRS UMR 6595 Technopôle de Château Gombert 5  
> rue Enrico Fermi 13453 Marseille cedex 13 Tel : (33) 4 91 10 69 39  
> ou (33) 4 91 10 69 43 Fax : (33) 4 91 10 69 69

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