[GE users] Help: Threaded dispatch problem

Lee Amy openlinuxsource at gmail.com
Wed Sep 17 09:44:26 BST 2008


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2008/9/17 Reuti <reuti at staff.uni-marburg.de>

> Hi,
>
> Am 17.09.2008 um 04:58 schrieb Lee Amy:
>
>  I have a threaded(non-parallel)
>>
>
> then it is a parallel program anyway. Whether it uses:
>
> - threads (operate on the same memory image) with e.g. Open MP or
> hand-crafted
> - forks (works on copies of the original programm plus maybe shared memory
> segments or message pipes for communication)
> - a parallel library like MPI, PVM, Linda, GlobalArrays, Charm++ which adds
> network communication
>
> is only a different programming paradigm, and should be chosen after
> analyzing the algorithm which fits best to the problem.
>
>  program called tgicl at bioinformatics field. It can run on one single
>> machine with multiple threads I prefer. However, I suppose that whether I
>> can play a trick like that.
>>
>> For example, I start the program with 8 threads, 4 threads run on a single
>> machine and other 4 threads run on another machine. Anyway, 8 threads belong
>> to one job. I suppose that I should use a PE to do that.
>>
>
> No, SGE will only support programs which are already parallel on their own
> by distributing them according to a necessary allocation style, but it will
> not add any additional parallelism on its own to it.
>
> You could of course try:
>
> http://www.kerrighed.org/wiki/index.php/Main_Page
>
> which adds a global memory space, and if it's of use for you, you could
> post your results here.
>
> -- Reuti
>
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> Reuti,

Thank you very much. I suppose that you show me a direction.

Regards,

Amy



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