[torquedev] nodes, procs, tpn and ncpus

Ken Nielson knielson at adaptivecomputing.com
Wed Jun 9 09:04:25 MDT 2010


On 06/09/2010 08:18 AM, "Mgr. Šimon Tóth" wrote:
>>> nodes=x will mean the same as procs=x.
>>>        
>> I don't think this should be the case... Moab reinterprets it to mean
>> the same thing, but historically with PBS that is not how has been
>> interpreted.
>>      
> Plus PBSPro has a strong distinction between processes and cpus.
>
> -l nodes=2:ppn=3:ncpus=4
>
> - you get two nodes with 3 processes on each node, and each process will
> get 4 cpus
>    
PBSPro has deprecated ppn. But I guess that does not mean they will 
still interpret it.
>    
> A lot of people use TORQUE without Moab/Maui. Plus I think that every
> change should keep Torque as much compatible with PBSPro as possible.
>
>    
These changes only allow TORQUE to interpret node specs in the absence 
of a scheduler. Schedulers change the node specs and give more specific 
directions concerning where jobs should run.

Ken


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