Re: [AMBER] Simulations using pmemd.cuda

From: James Starlight <jmsstarlight.gmail.com>
Date: Wed, 7 May 2014 14:18:00 +0400

Thanks, Marc! It works perfect.


James


2014-05-07 14:10 GMT+04:00 Marc van der Kamp <marcvanderkamp.gmail.com>:

> Hi James,
> There are more experienced people here that can provide better informed,
> fuller answers, but I hope this will help:
>
> >
> >
> > 1) How I could use my second GPU for second system?
> >
>
> Set the environment variable *CUDA_VISIBLE_DEVICES *(you can search for
> this in the Amber mailing list to see previous posts).
> *CUDA_VISIBLE_DEVICES=0* should point to your first GPU, and if you then
> set *CUDA_VISIBLE_DEVICES=1 *you should use your other one.
>
>
> > 2)Does it possible to use 3 CPU cores for each GPU obtaining increase in
> > performance? Should I use MP for such tasks?
> >
> > The pmemd.cuda code runs completely on the GPU, using CPU only for i/o.
> So
> I'm pretty sure there will not be any increase in performance when using
> more CPU cores.
>
>
> > Thanks for help,
> >
> > James
> > _______
>
>
> Hope this helps,
> Marc
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Received on Wed May 07 2014 - 03:30:03 PDT
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