[GE users] h_fsize and mpi

reuti reuti at staff.uni-marburg.de
Wed Dec 16 10:43:19 GMT 2009


Hi,

Am 16.12.2009 um 11:09 schrieb pablorey:

>     Hello,
>
>     I have a doubt about h_fsize and MPI jobs. In a MPI job, the  
> h_fsize is limited by slot or limited by node?.
>
>     I know that the s_vmen value is the limit for each slot. For  
> example, if a sent the following job:
>
> qsub -l num_proc=1,s_rt=10:00:00,s_vmem=2G,h_fsize=20G -pe mpi 32  
> job.sh

like all system limits it's per process. To check it, you submit a  
job with a script like:

#!/bin/sh
ulimit -aH
echo
ulimit -aS

to get the set limits output.

Only limits handled by SGE are different (man queue_conf), i.e. h/ 
s_cpu and h/s_vmem.

-- Reuti


> the memory limit by each slot is established to 2G, so in each node  
> the memory limit is set to "2G * number_of_assigned_slots". What  
> about the h_fsize limit?. Is similar to s_vmen or it is set by  
> node?. That is, in the previous example, the limit is 20G or "20G *  
> number_of_assigned_slots".
>
>     Regards.
>
> -- 
> Pablo Rey Mayo
> Tecnico de Sistemas
> Centro de Supercomputacion de Galicia (CESGA)
> Avda. de Vigo s/n (Campus Sur)
> 15705 Santiago de Compostela (Spain)
> Tel: +34 981 56 98 10 ext. 233; Fax: +34 981 59 46 16
> email: prey at cesga.es; http://www.cesga.es/
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