I am not doing any tree updates, just pure MC simulation. 1090T has 6 core and i5 has 4 core, however i5 is better at level 3 caching (I've been told), so don't know which factor dominates. i7 920 with 6 core should definitely better than 1090T.
Fuming On Mon, Nov 29, 2010 at 8:45 PM, Petr Baudis <[email protected]> wrote: > On Sun, Nov 28, 2010 at 09:37:55PM +0800, Fuming Wang wrote: > > These two has simular prices. Any one know which cpu is better for Go MC > > simulation? > > FYI, at our department we will be shortly purchasing some Phenom 1090T > and Opteron 6134 machines, and I will be comparing the MCTS performance > between these and i7 920 (unfortunately, I don't have any newer i7 CPUs > available). I hope to be able to post about it in four to six weeks when > everything arrives and is put together. > > Not sure if you intended it while phrasing your question, but the > classic MCTS is actually very diverse task - the MC simulation part you > mentioned is heavy on integer arithmetic, branching and possibly bit > operations. > > OTOH the tree search part is entirely different, very heavy on floating > point arithmetics (IIRC, most of the time in this part is spent taking > the square roots; overally, tree search is taking 1/4 to 1/3 of the > runtime, a significant amount; of course the balances may be different > in other programs with heavier/lighter playouts). > > Petr "Pasky" Baudis > _______________________________________________ > Computer-go mailing list > [email protected] > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go >
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