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Author Topic: Parallelization over two cores of one CPU in one machine  (Read 2703 times)

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Offline Subhban15

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Parallelization over two cores of one CPU in one machine
« on: November 19, 2015, 07:19 »
I am trying to parallelize the simulation over two cores in one CPU (OS is CentOS 6.6).
Can anyone please guide me how to proceed with it?
I tried installing mpich2 (by following the tutorial http://quantumwise.com/publications/tutorials/item/509-mpi-setup-for-running-atk-in-parallel-on-a-simple-cluster ) but that's probably not the solution.

Thanks for you help!
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Offline Subhban15

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Re: Parallelization over two cores of one CPU in one machine
« Reply #1 on: November 20, 2015, 21:05 »
Could anyone please provide a dummy transcript of the procedure? It will be a great help! Thanks again!  :)
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Offline Subhban15

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Re: Parallelization over two cores of one CPU in one machine
« Reply #2 on: November 21, 2015, 06:18 »
This doesn't seem to be a good idea  :-\  Because of the shared resources and memory problem. I get it now.
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Offline Anders Blom

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Re: Parallelization over two cores of one CPU in one machine
« Reply #3 on: November 22, 2015, 20:52 »
It depends on your machine of course - if you have 8 GB memory (not uncommon) and run 2 processes, you can get a nice speedup. But sure, if you have 2 GB and run a big calculation , then it will not work.
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Offline Subhban15

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Re: Parallelization over two cores of one CPU in one machine
« Reply #4 on: November 23, 2015, 10:22 »
Okay... Thank you very much! :)
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