Author: Robert Hyatt
Date: 17:57:09 08/11/05
Go up one level in this thread
On August 11, 2005 at 14:37:56, Uri Blass wrote: >On August 11, 2005 at 14:00:24, Robert Hyatt wrote: > >>On August 11, 2005 at 13:57:36, Madhavan wrote: >> >>>On August 11, 2005 at 13:53:37, Robert Hyatt wrote: >>> >>>>On August 11, 2005 at 12:55:10, Thorsten Czub wrote: >>>> >>>>>1. Fruit >>>>>2. Shredder >>>>>3. Junior >>>>>4. Crafty >>>>>5. Zappa >>>>>6. Diep >>>>>7. Sjeng >>>>>8. Jonny >>>>>9. IsiChess >>>>>10. My_fute >>>> >>>> >>>>That will be a miracle. A single opteron CPU (single core) is 2x as fast as a >>>>3.0ghz pentium. I, at least, will be running on 8 of 'em. That is a tough >>>>disadvantage to overcome... >>> >>>Don't forget Fruit beta has got another 100 elo improvement. >> >> >>Doesn't matter at all. a speed advantage of 16x is huge. Not insurmountable, >>but _huge_ and very difficult to overcome. > >I guess that it does not gives more than 150-200 elo improvement because of >diminishing return that means that being twice faster give only 40-50 elo >improvement at long time control and not 70 elo. > >It seems that public fruit is about 150-200 elo better than public Crafty. >I expect both WCCC fruit and WCCC Crafty to be better than the public version so >it seems to me that fruit and Crafty have equal chances. > >Maybe Crafty has better chances because you could learn from Fruit's evaluation >so you improved Crafty more than Fabien improved Fruit but only you can tell if >looking at the source of fruit helped you to improve Crafty. That I can answer easily. I've not looked at the source of fruit. So there's no way it could have helped. In fact, I haven't even seen a game fruit vs crafty so I have no idea how the thing plays. My comment was solely about speed. a factor of 16 (over 3.0ghz) is 4 doublings, each doubling is certainly worth something. Whether it will make Crafty stronger than fruit, I won't speculate about since I have no idea how they compare on equal hardware with reasonable opening book moves. But given two programs that are within a hundred rating points of each other, I'd be hard-pressed to not pick the one that is suddenly 12-16X faster... That was my only point. I don't know that I'll win a single game. But I do know that it is going to be hell to beat the thing. I've seen 15 ply searches in 5 3 games on ICC in the middlegame. I saw 16-17 ply middlegame searches against Junior in the next-to-last CCT which Crafty won on a quad cpu box. This one is 2x faster... > > >> >>Also I don't believe the +100 elo stuff anyway, otherwise all the programs would >>be rated 3600 and up by now... > >I also do not believe the +100 elo stuff for fruit in this version but the stuff >is only about fruit so I do not see how you get your conclusion about other >programs. Simple. Every year, every new version, "the new version is 60-80-100 elo stronger than last year's version." Seen that over and over and over. :) > >The +100 elo stuff was correct for Fruit in the past and it is a fact that fruit >improved faster than other programs > >Fruit2.0 was already above Crafty level on one cpu and Fruit2.1 is slightly more >than 100 elo better than fruit2.0 based on the CEGT rating list. > >Uri
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