Hi,

Am 18.12.2011 um 12:16 schrieb Mohamed Adel:

> Dear All,
>  
> I’m using a cluster of 8-cores per compute node and 8GB main memory per 
> compute node, which gives 1GB per core.
> I want to submit an MPI job which needs 2GB memory per core, so my question 
> is:
> Can I request certain memory more than available per core and the scheduler 
> will reduce the number of running processes per compute node to fulfill the 
> high memory request?

just set up the available memory per node:

http://www.gridengine.info/tag/virtual_free/

Then request the 2GB in the job submission.


> Can I request certain number of slots per node; i.e. 4 cores instead of 8 
> (although the queue is configured to provide 8 slots per host)?

This depends on the defined PE. But it's not on a user level as it has to be 
set up by the SGE admin in the PE beforehand. Requesting memory should give you 
the proper distribution.

-- Reuti


>  
> Thanks in advance,
> --ma
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