Author: blass uri
Date: 12:07:39 06/16/00
Go up one level in this thread
On June 16, 2000 at 15:00:26, blass uri wrote: >On June 16, 2000 at 14:54:18, leonid wrote: > >>On June 16, 2000 at 14:12:47, Tom Kerrigan wrote: >> >>>On June 16, 2000 at 14:10:24, leonid wrote: >>> >>>>On June 16, 2000 at 13:25:41, Tom Kerrigan wrote: >>>> >>>>>On June 16, 2000 at 13:16:57, leonid wrote: >>>>> >>>>>>On June 16, 2000 at 12:34:58, Michel Langeveld wrote: >>>>>> >>>>>>>No nps of alpha-beta and minimax will be almost the same. But the total number >>>>>>>of and the total amount of time will be a much lesser. >>>>>> >>>>>>Your first statement sound to me as something near to impossible. Just recently >>>>>>Bas Hamstra said that minimax speed is around 800000 nodes/second. Computer was >>>>>>indicated as Pentium 466M. Usual number of nodes/second that I see on my AMD >>>>>>400M (for some best chess games like: Crafty, Xchess, Comet...)is around 150000. >>>>>>Even from this I can see that: 800000:150000=5.3 times. >>>>> >>>>>Then his program is 5.3 times faster. This has virtually nothing to do with >>>>>alpha beta vs. minimax. >> >>So, what your obove sentence say? In simple term? That 800000 NPS is just usual >>speed (or more exactly, number of positions seen) of its program? Never mind if >>logic use minimax or alpha-beta? Number of positions seen is always 800k? >> >>Leonid. > >I think that he means that 800000 nps is usual speed if you want to use alpha >beta+only material evaluation and when your program is as fast as possible in >nodes per second(this means that you do not have extension rules and that you do >not try to use good order of moves) > >Programs usually do not do it because programmers want to develop better >programs and not to be the champion in nodes per second so they are slower in >nodes per second. > >Uri I can add that 800000 is for celeron 466 when Tom's number is bigger mainly because of the fact that pentiumIII800 is faster. Uri
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