[Pw_forum] QE-GPU problems.

[Konrad Gruszka]

Hello,

Well, my card is actually GTX1060 but I didn't bought it especially for 
calculations.

Just from my built-in curiosity, and I know the game is not worth the 
candle, I want try to run it anyway and close that 'chapter' of my life 
:) I will post here some tests results - as I was looking for this type 
of data, and maybe this will save some time for other seekers.

Mr Spiga, as the best expert, could You please give some guide, any 
informations what and where to change in source of QE-GPU?

K. Gruszka


W dniu 02.01.2017 o 08:07, Filippo SPIGA pisze:
> On Dec 30, 2016, at 3:48 AM, Oliver Generalao <oliver.b.generalao at gmail.com> wrote:
>> The only catch, which Mr Spiga always points out, is that the DP performance on GTX cards  is very slow , which is like 1/32 (or 1/24) of the Single Precision
> So GTX 1070 is not worth using. A little bit of tuning of your input, better compile flags and the CPU will perform the same or faster than the CPU+GPU.
>
> Because you have a GTX 1070 it does mean you must use it. If you buy a GPU only for QE, do not buy that model. Very simple.
>
> --
> Filippo SPIGA ~ Quantum ESPRESSO Foundation ~ http://www.quantum-espresso.org
>
>
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