Re: [AMBER-Developers] external GPU

From: Adrian Roitberg <roitberg.ufl.edu>
Date: Thu, 18 May 2017 17:47:00 -0400

Thanks!

Not quite what I needed, but it helps.

Exact case is:

State of the art new iMac, and they want to tun amber in gpus. So, the
only option is to buy an external box, and go through thunderbolt.

thanks




On 5/18/17 5:40 PM, Ross Walker wrote:
> 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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>
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-- 
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 - 15:00:04 PDT
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