Author: Uri Blass
Date: 03:37:58 07/23/04
Go up one level in this thread
On July 23, 2004 at 06:19:02, Joachim Rang wrote: >On July 22, 2004 at 12:56:49, Uri Blass wrote: > >>Conditions: >> >>Jonny 256 mbytes hash >>Movei 64 mbytes hash(I suspect that more than it is counter productive for all >>time controls and even 64 mbytes is counterproductive for fast time control >>except very fast time control of 3 minutes per game or faster because in very >>fast time control movei does not waste time on clearing the hash because it >>assumes that it has no time for it and the old entries in the hash are still >>productive for better order of moves and movei does not suffer much from useless >>entries) >> >>Hardware A64 3000(2ghz) >> >>Movei-Jonny 36.5-13.5 at 1 minutes per game >>Movei-Jonny 34.5-15.5 at 2 minutes per game >>Movei-Jonny 33.5-16.5 at 3 minutes per game >>Movei-Jonny 27-23 at 4 minutes per game >>Movei-Jonny 23.5-26.5 at 10 minutes per game >>Movei-Jonny 2.5-3.5 at 20 minutes per game >> >>games played under winboard. >>It seems that Movei is simply weaker at long time control and it is not >>surprising because it has poor order of moves and bad use of hash tables. >> >>The surprise that I have so far is the good results of it in WBEC. >> >>Uri > > >what is a bit disturbing it, that you gave different Hash to different >opponents. As you wrote 256 MB is more than enough for a 1 0 game and perhaps >even hurts Jonny in the fast games (just a speculation). > >regards Joachim Based on watching some games it did not seem to me that big hash hurted Jonny(it is not a program that clears it's hash after it's moves and I believe that it did not lose games on time but I will check later). I think that the rule should be for most programs that bigger hash is never worse except programs that clear the hash between moves(It is the case for crazybishop based on asking here but I did not ask about Jonny before starting the match). practically it seems that Jonny used less than 256 mbytes but more than 200 Mbytes and maybe it cannot use exactly 256 mbytes(I used configuration for 256 mbytes that comes with the engine). The result in the match at 20 minutes per game was 9-9 the last time that I looked and now I am not near the computer that is doing the match and even in case that I were near the computer the only way to check the results could be by looking at the pgn of the games(I simply followed every game from 3.5-2.5 for Jonny to 9-9 so I did not need to look at the pgn at that time). I expect the match(20 minutes per game) to be finished in a few hours and I will report the results. Uri
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