On Wed, 13 Dec 2017 20:34:52 +0330
Mahmood Naderan <mahmood...@gmail.com> wrote:
> >Currently I am using two Tesla K40m cards for my computational work
> >on quantum espresso (QE) suit http://www.quantum-espresso.org/. My
> >GPU enabled QE code running very slower than normal version
>
> Hi,
> When I hear such words, I would say, yeah it is quite natural!
>
> My personal experience with a GPU (Quadro M2000) was actually a
> failure and loss of money. With various models, configs and companies,
> it is very hard to determine if a GPU product really boosts the
> performance
Agreed. GPU performance is not a given. It depends on app, version,
input files, hardware, job-geometry, ..
> At the end of the day, I think companies put all good features in
> their high-end products (multi thousand dollar ones). So, I think the
> K40m version, where it uses passive cooling, misses many good features
> although it has 12GB of GDDR5.
K40m is the very high end (of the previous generation, Kepler). The
only higher speced GPU is the K80 which is just two slightly less
impressive K40 in one package.
As far as "passively cooled" goes. It's a server component where the
server is expected to provide the needed airflow. The K40m is a high
TDP part.
/Peter
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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