[gmx-users] Performance of GTX 980 and 970

[Carsten Kutzner]

Hi,

On 29 Sep 2014, at 16:27, Szilárd Páll <pall.szilard at gmail.com> wrote:

> On Mon, Sep 29, 2014 at 2:46 PM, Mirco Wahab
> <mirco.wahab at chemie.tu-freiberg.de> wrote:
>> On 29.09.2014 14:31, Pappu Kumar wrote:
>>> 
>>> I am wondering if anyone tested the performance of new GTX 980 and 970
>>> cards and compared to 780/780Ti/Titan using the input systems given here
>> 
>> 
>> As long as I don't have a card, I can only guess.
>> 
>> But: until the appearance of reasonable benchmarks, you
>> can look at the F at H-results:
>> 
>> single:
>> http://images.anandtech.com/graphs/graph8526/67747.png
> 
> Note that that's the GB single precision benchmark's plot which shows
> surprising large performance gap between 780 Ti and 980 - perhaps
> there's something in the OpenMM GB kernels that favors Maxwell.
> 
> This is the explicit solvent performance plot:
> http://images.anandtech.com/graphs/graph8526/67746.png
> showing ~25% improvement over a 780 Ti (still pretty impressive). This
> is close to what I'd have guessed based on extrapolating the 750 Ti
> performance.
Wouldn’t one expect the 980 to be slightly slower than the 780 Ti
due to its smaller single precision processing power?

Carsten

> 
> Also note that this is OpenCL performance which is inherently worse
> than CUDA and the OpeCL-CUDA difference may not be the same across all
> architectures!
> 
> Cheers,
> --
> Sz.
> 
>> double:
>> http://images.anandtech.com/graphs/graph8526/67748.png
>> 
>> 
>> M.
>> 
>> 
>> 
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--
Dr. Carsten Kutzner
Max Planck Institute for Biophysical Chemistry
Theoretical and Computational Biophysics
Am Fassberg 11, 37077 Goettingen, Germany
Tel. +49-551-2012313, Fax: +49-551-2012302
http://www.mpibpc.mpg.de/grubmueller/kutzner
http://www.mpibpc.mpg.de/grubmueller/sppexa