AW: [GE users] Help: PE details

Amy Lee openlinuxsource at gmail.com
Sat Nov 3 10:26:50 GMT 2007


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Rayson Ho wrote:
> With or without PE, SGE starts the parallel application, and that's
> mostly all it does. SGE cannot change the scaling issues of your
> parallel program.
>
> However, there are 2 things that SGE can do a better job than a normal user:
> 1) SGE may be able to pick better machines, or better sets of machines
> which have lower latency and/or higher bandwidth to communicate among
> themselves.
>
> 2) SGE can adjust the process priority dynamically.
>
> Rayson
>
>
> On Nov 1, 2007 10:22 AM, Amy Lee <openlinuxsource at gmail.com> wrote:
>   
>>> Thank you very much. And I still have some problems. As you said, when I using PE to run parallel programs, the SGE just allocate a set of machines which I've selected, then the post-working is functions of MPI, right? Furthermore, can I use PE to improve the parallel programs efficiency by using SGE? If I can, how?
>>>
>>>       
>
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>   
Thank you very much. And could you tell me whether I should enable 
something to let SGE adjust the process priority dynamically?

Thank you again~

Regards,

Amy Lee

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