[torquedev] [torqueusers] Problem with ppn and routing

"Mgr. Šimon Tóth" SimonT at mail.muni.cz
Mon Dec 6 14:46:48 MST 2010


>> Plus the Torque developers still haven't decided on clear resource
>> semantics therefore -l nodes=2 -l mem=2G could mean both 2GB spread
>> across 2 nodes or 2GB on each node (4GB total).
> 
> It seems to me that Torque views mem as the total memory. That is what I 
> guess from qstat -f from one of the jobs that is running on our cluster. 
> Here is an excerpt:
> 
>      resources_used.mem = 182440144kb
>      resources_used.vmem = 252290712kb
>      Resource_List.mem = 250gb
>      Resource_List.nodect = 16
>      Resource_List.nodes = 16:ppn=4
> 
> As our nodes have 8 cores and 16 GB, I do not see how mem could be 
> interpreted as memory per node with the numbers that I get.

No, torque doesn't view mem at all. The only thing that is done with
resources like mem are checks against server and queue minimum and
maximum limits. If no limits are set, no checking is done and resources
are ignored.

-- 
Mgr. Šimon Tóth

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