On 2012-05-02 06:13:04PM +0200, Mirco Wahab 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. > > (Here in Germany, I can by GTX-580/3GB for ~325€ + Tax.) > > Regards, > > M.
You might be. I do have a collaborator in France who chooses to use GTX 580 with NAMD and is eschewing the Keplers. I think I saw a bench somewhere for Kepler compute; not sure if I saw that much difference (but you will be paying the price though). In that case stick with Fermis for now :) -- ================================================================== Peter C. Lai | University of Alabama-Birmingham Programmer/Analyst | KAUL 752A Genetics, Div. of Research | 705 South 20th Street [email protected] | Birmingham AL 35294-4461 (205) 690-0808 | ================================================================== -- gmx-users mailing list [email protected] http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to [email protected]. Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
