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Offline jerry

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parallel calculation
« on: July 19, 2011, 15:15 »
Dear,
    I want to know how to make parallel calculation in a workstation with 8 microprocessors for saving time and larger system? The OS is windows server 2008. Thanks Very much!
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Offline Anders Blom

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Re: parallel calculation
« Reply #1 on: July 19, 2011, 16:40 »
You can find many details in the Parallel Guide.

If this is a double quad-core, I would however not use more than 2 MPI processes, otherwise the MPI parallelization will consume too much memory, and kill all threading advantage. MPI parallelization is primarily intended for nodes with multiple, separate machines.

Threading over multicores is, on the other hand, automatically activated in ATK.
« Last Edit: July 19, 2011, 16:42 by Anders Blom »
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Offline jerry

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Re: parallel calculation
« Reply #2 on: July 20, 2011, 03:59 »
Thanks a lot!
My workstation has four duo-cores with 48GB RAM. But only less than 6GB is used when running ATK. Is this reasonable?
 
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Offline zh

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Re: parallel calculation
« Reply #3 on: July 20, 2011, 11:43 »
The limited information (only including the available size of memory and the used one) is not enough to make an clear answer to your question. When the submitted job is running, you can use the command "top" to check the detailed information about the using of memory.
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