[torqueusers] Torque/Maui problem with which nodes are job-exclusive/free

Bas van der Vlies basv at sara.nl
Tue Oct 19 09:20:23 MDT 2004


Danny Sternkopf wrote:
> Hi,
> 
> On Tue, Oct 19, 2004 at 04:41:19PM +0200, Bas van der Vlies wrote:
> 
>>We at SARA are installing a new cluster that has 272 dual processor 
>>nodes.  We are using torque-1.1.0p2 and maui 3.2.6.p9.
>>
>>We have configured torque/maui so that there is only one job per node.
>>An user can decide if he want to use one or two processors on an node, eg:
>>  1) qsub -I -lnodes=4 (4 nodes)
>>  2) qsub -I -lnodes=4:ppn=2 (4 nodes, 2 processors of each node)
>>
>>This works as expected. Now the problem is, if we use pbsnodes -a 
>>displays in example 1 all the nodes as 'free' and in example 2 it will 
>>display the nodes as 'job-exclusive'.
>>
>>We would expect it will display 'job-exclusive' for both examples. It 
>>this an bug?
> 
> 
> No definitively not. The nodes are free due to one free CPU is left on each
> of them. Maui can start another one CPU per nodes job on the same nodes.
> 
> Regards,

Oke,

  But that is the point i have configured torque/maui so that there is 
only one job per node. That is why i expect if there is an job scheduled 
on this node, pbsnodes -a will display that it is 'job-exclusive'.

	Regards


-- 
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*                                                                  *
*  Bas van der Vlies                     e-mail: basv at sara.nl      *
*  SARA - Academic Computing Services    phone:  +31 20 592 8012   *
*  Kruislaan 415                         fax:    +31 20 6683167    *
*  1098 SJ Amsterdam                                               *
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