Author: Uri Blass
Date: 03:36:22 01/09/03
Go up one level in this thread
On January 09, 2003 at 06:04:27, Tony Werten wrote: >On January 08, 2003 at 18:19:39, Uri Blass wrote: > >>On January 08, 2003 at 17:22:40, Tony Werten wrote: >> >>>On January 08, 2003 at 16:25:44, Russell Reagan wrote: >>> >>>>On January 08, 2003 at 14:31:10, Ed Schröder wrote: >>>> >>>>>Yes Gerd, this is probably most true. I never had the time to put energy in the >>>>>bit-boards technique. Do you have any idea about the number of clocks needed to >>>>>extract the hanging pieces from a position using bitboards? >>>> >>>>I wrote a program using the same algorithms that Gerd uses for generating >>>>attacks, but mine are written in C instead of using MMX like Gerd, so mine are >>>>going to be slower than his. In any case, the engine is somewhat slow. It gets >>>>around 70knps or maybe a little more on my PIII 733 MHz machine (compare with >>> >>>I don't want to bring you down but that is kind of slow. >>> >>>XiniX, while generating Ed's attackboards and doing full evaluation and >>>everything else still gets 400Kn/s in the middlegame on a amd2000 >>> >>>And that's only with generating the attackboards, not actually using them to >>>speed up stuff. >>> >>>Tony >> >>Movei probably makees 300-350 Kn/s but based on your definition >>of nodes it is probably more nodes. >> >>Movei generates millions of legal moves and I know from previous discussion that >>you consider part of the moves that it generates as nodes when I do not count >>them as nodes. > >Actually, I don't either. The discussion was about futility pruning. I have the >opinion that if you do all the work for a move and then prune it, you should >count it as a node. > >I don't prune in XiniX other then nullmove. So my 400 should be 400 to you too. > >Tony I do not know what is all the work because for me making the move is also some work because I update my attack tables and later I need to generate the legal moves to calculate exact evaluation. Uri
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