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Parallel Computing Toolbox se of resources in a multi-core, multi-GPU system

I have a x86-64 system w/ 12 Cores and 8 GPU cards.   Supposing I have the parallel toolbox, I am allowed to use up to 12 workers.   

From what I understand, the following scenario would work (Please correct me if I'm wrong): assign N workers to N GPU cards and (12-N) workers to (12-N) cores.

Now, are we allowed to assign multiple cores to a single worker, and have that worker multi thread between cores?  For example, use 5 workers:  4 workers to 4 GPU cards, and 1 Worker for 6 cores?

I would appreciate any help.
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10/27/2011 7:52:30 PM
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