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-   -   How to distribute no. of CPUs among parallel jobs? (http://www.cfd-online.com/Forums/cfx/22156-how-distribute-no-cpus-among-parallel-jobs.html)

SGI Altix February 9, 2006 04:46

How to distribute no. of CPUs among parallel jobs?
 
Hello guys..... I'm a bit confused about how to make full use of the CFX license that we have for the current job. We have 4 parallel licenses, 4 unlimited licenses and 20 limited licenses in the server. Our gear is SGI machine that consists of 32 itanium Pentium chips. From my understanding, when running a parallel job, we need to assign 1 license for each CPU.

My problem currently used about 1.3million nodes. Should I assign more CPUs for each job to reduce no. of nodes per partition so that I can use limited licenses for the run as well?

Thank you for your inputs here.

Glenn Horrocks February 9, 2006 17:49

Re: How to distribute no. of CPUs among parallel j
 
Hi,

Why don't you just try it and find out? It will probably work nicely.

Glenn Horrocks

Jeff February 11, 2006 22:30

Re: How to distribute no. of CPUs among parallel j
 
To run a parallel job, you need a single acfx_solver, a single acfx_parallel license, and one acfx_par_proc for each partition including the master. Look at how many par_proc licenses you have, that will determine how many partitions you can use.

Jeff

SGI Altix February 14, 2006 02:38

Re: How to distribute no. of CPUs among parallel j
 
Thanks, Jeff. You catch my question. It's actually the par_proc that limits the amount of CPUs that I can assign for a parallel job. I have 8 par_proc licenses in the server.


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