I don't have an i7-2600, but I could run oakfoam on the 3930. I just downloaded it and it does compile. If you give me a list of gtp commands to run the benchmark, then I will send you the output back.
Erik On Thu, Aug 9, 2012 at 12:38 PM, ds <d...@physik.de> wrote: > This is very interesting, > > I have not more than 10% with oakfoam on i7-2600K. Would be interesting > if it is the processor or if you e.g. access more often memory instead > of cache due to your code... > > Do you have the chance to run your program on a i7-2600? or do you have > to much time and try https://bitbucket.org/francoisvn/oakfoam/wiki/Home > on your i7-3930. If so, I would be very much interested in the number > you get in the beginning of a 19x19 game without book:) > > > Detlef > > Am Donnerstag, den 09.08.2012, 12:16 +0200 schrieb Erik van der Werf: > > On Thu, Aug 9, 2012 at 11:14 AM, Petr Baudis <pa...@ucw.cz> wrote: > > On Wed, Aug 08, 2012 at 09:08:47PM +0200, ds wrote: > > > Hyperthreading does the trick, I have the experience it > > increases the > > > performance by about 10%. I think this is due to waiting for > > RAM I/O or > > > things like that.... > > > > > > Yes. With hyperthreading, performance per thread goes down > > significantly, but total performance goes up by about 15%. In > > the > > Pentium 4 era, hyperthreading did not usually pay off, but > > with i7, > > its performance is much better. The basic idea is that there > > are two > > instruction pipelines that share the same ALU and other > > processor units; > > if one of the pipelines stalls (usually due to memory fetch), > > the other > > can use the ALU in the meantime, or the two threads may use > > different > > parts of the CPU altogether based on what the instructions do. > > > > > > > > 10-15%, really, that low? For my program (on an i7-3930K, going from 6 > > to 12 threads) it is more in the order of 40% extra simulations per > > second. > > > > > > Erik > > > > > > _______________________________________________ > > Computer-go mailing list > > Computer-go@dvandva.org > > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go > > > _______________________________________________ > Computer-go mailing list > Computer-go@dvandva.org > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go >
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