Hi Filip and all,
I just obtained offer to test K20 here:
http://www.nvidia.co.uk/object/k20-gpu-test-drive-uk.html
so it forced me to check actual Amber benchmarks where K20/K20x
results are already present so one may compare
their performance e.g. to GTX680.
http://ambermd.org/gpus/benchmarks.htm
as anybody can see the increase of performance
is not so overwhelming.
So in this context I do not understand Filip's
"much much faster" .
much much faster THAN WHAT ???
Perhaps not than K20/K20x if yes why ?
Anyway I would be grateful for any comments regarding so small
performance increase of the new architectures K20/K20x
comparing to GTX608.
I am not sure but if I remember well there was some
opinions that the new Kepler will be about
5x times faster (maybe not than GTX680 which is K104 based
but than fermi based GTX580 which is also not true)
Is there problem, that the Amber code is still not fully
optimised for K20 and the actual patch 14 just allowed
to use Amber on these new generation GPUs but it will
need some more code improvements in order to use all
the advantages of the new Kepler architecture ?
Best wishes,
Marek
Dne Tue, 19 Feb 2013 17:40:12 +0100 filip fratev <filipfratev.yahoo.com>
napsal/-a:
> Hi Ross and all,
>
> After a lot of rumors the GTX Titan card was
> released today. For the first time on any consumer-level NVIDIA card,
> double precision (FP64)
> performance is uncapped. That means 1/3 FP32 performance, or
> roughly 1.3TFLOPS theoretical FP64 performance. Thus this card is very
> similar
> (same for Amber use) to Tesla K20x, but costs 1000$ and will be much much
> faster! I suppose that Titan will break the 100+ ns threshold on JAC
> test with
> Amber 12 and have no patience to see some test results!
> All the best,
> Filip
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Received on Tue Feb 19 2013 - 09:30:02 PST
