Author: Sune Fischer
Date: 12:07:40 12/03/01
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On December 03, 2001 at 14:23:44, David Rasmussen wrote: >>There is a common misconception that collisions are so >>evil that they will automatically weaken your program >>when they happen. That is totally false. >> > >I understand that, but the speed gain isn't that big from 64 bits to 32 bits, >and while collisions might not themselves be evil, the increase in complexity of >debugging etc. sure is. A very important invariant, that a position's >pawnstructure is always evaluated the same way, doesn't hold. I don't like that >for a small speed gain. But sure, it's a design choice. > >/David In a typical game I seem to be getting around 5000-10000 different pawn positions. With 32 bit keys I would expect 1 collision for every 100 games, of cause once there is a collision it could be serious because the score is used so often. -S.
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