What do you mean by 'external'?
Do you mean sitting in a breakout box with a PCI-e cable going to the motherboard of the server? If yes that works fine - performance is identical since it's logically equivalent to having the GPUs plugged into the physical PCI-e slots. Multi-GPU as long as they can do P2P and sit on the same PLX switch should also be the same. That said the connections for these break out boxes can be super fragile. Plug them in in the rack, get it working reliably and then NEVER touch anything in the vicinity again is my advice. If it's in a rack people keep accessing, recabling etc it will have you pulling your hair out.
If you mean something entirely different then the answer is I've never tried it but would be interested to understand what you are referring to.
All the best
Ross
> On May 18, 2017, at 5:23 PM, Adrian Roitberg <roitberg.ufl.edu> wrote:
>
> Hi there
>
> Without answering with: "Why would you want to do do that???"
>
> Has anyone played with running amber on a server but using and external
> GPUs ? I would be interested in any results you can share, be it price,
> how hard it was to do, and performance.
>
> Thanks
>
> adrian
>
>
>
> --
> Dr. Adrian E. Roitberg
> University of Florida Research Foundation Professor
> Department of Chemistry
> University of Florida
> roitberg.ufl.edu
> 352-392-6972
>
>
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Received on Thu May 18 2017 - 15:00:02 PDT
