[GE users] Queue configuration

Ryoji Takahashi ryoji at cct.lsu.edu
Tue May 6 19:19:54 BST 2008

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Following this question, I would like to ask allocation rules.
Our machine is quad-core and each nodes has 8 processors. 
We are using mvapich-1.0.0. Because of the computing efficiency, when we 
submit a job
for 8 processors, we would like to allocate this job to one node or 
pending if any nodes are
available. However, even if there is an allocation rule by 8, when I 
submit a job for 8 processors,
SGE takes processors from whichever available nodes.  I thought  we can  
avoid this by 
an allocation rule?
If not, how it is possible to set up like this?


Ryoji Takahashi

Department of Physics and Engineering
University of Tulsa
800 South Tucker Drive
Tulsa, OK 74104
Email: ryoji-takahashi at utulsa.edu, ryoji at cct.lsu.edu
Tel:   +1-918-631-2029
Fax:   +1-918-631-2995
Web:   http://www.personal.utulsa.edu/~ryoji-takahashi/

Noé Vázquez González wrote:
> Hi All,
> Is it possible to set up a parallel queue as follows?
>    - If a node has enough free cpus for the job, run it on that node.
>    - If there isn't a node with enough free cpus, spread the job 
> between the nodes as usual.
> For example, a parallel job that requires 8 cpus, if there is a node 
> with 8 free cpus asign the job to 8 cpus of that node. If there isn't 
> 8 cpus avaliable on the same node, spread the job between other nodes 
> as usual depending on their load (4 4, 2 2 2 2, etc.)
> Thanks.
> Noé

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