[gmx-users] some hardware questions

[Szilárd Páll]

On Wed, May 2, 2012 at 6:13 PM, Mirco Wahab <
mirco.wahab at chemie.tu-freiberg.de> wrote:

> Hello Peter,
>
> Am 02.05.2012 17:44, schrieb Peter C. Lai:
>
>
>  You can wait for ivy bridge, then stick some Kepler GPUs (nvidia gtx
>> 680) in it. That should max the performance. asm is pretty much stagnant
>> for general purpose procs since core2 came out.
>>
>
> Is this true?
>
> To my knowledge, the Fermi GPU (GF-110, eg. GTX-580) is
> a 16 processor (streaming multiprocessor, SM) system, each
> processor having 32 cores running at 1.5 GHz, and the
> Kepler-1 (GK-104, eg. GTX-680) an 8 processor system
> with 192 cores per processor at 1GHz.
> Because on the Fermi each SM has more L1 cache than
> each SM on the Kepler-1 and because it might be harder
> to saturate 192 cores in a compute-scenario, I'd expect
> the 580 (GF-110) to be significant(?) faster in the
> next Gromacs (4.6). Maybe somebody tested this already.
>

The current experimental Kepler kernels have about the same performance as
a GTX 580. We hope to squeeze out more performance, but we'll have to see.



> (Here in Germany, I can by GTX-580/3GB for ~325€ + Tax.)
>
> Regards,
>
> M.
>
>
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