Author: Richard A. Fowell
Date: 12:37:59 12/03/00
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On December 03, 2000 at 11:56:08, William Bryant wrote: >Screamer build 55 is now available for download. > >Links are on the web page. >http://pweb.netcom.com/~wbryant/screamer.html > >William >wbryant@ix.netcom.com Now that there are five Macintosh chess programs compatible with the ExaChess 2.0 umpire program (www.exachess.com) - Screamer build 55 - Vanessa Chess 2.01 - Sigma Chess 5.1.2 - Crafty 14.11 B - ZZZZZZ 3.3 it seems like a tournament would be in order. I was thinking of running a round robin tournament of 100 games per pairing at 5 seconds/move on my 7300/180 (1 gig free HD space, 50 Mb free RAM). I want a lot of games to try to get something with low variance on the statistics - this would yield 400 games per engine, which would be something like a +/-30 pt Elo tolerance on the relative standings, I think. I understand that running a tournament like this, on a single machine without pondering, may not be representative of their play under the conditions the engines were designed for, but it seems to me more useful to collect the data than not. I'd like suggestions on the settings to use for each engine (unless I hear back, I'll use the default settings). In particular - what opening book? - what tablebases? (I will definitely load the 3 and four man tablebases for programs than use them, but I don't have the room to load the five man tablebases. However, if there is a useful subset of the 5 man tablebases that would fit within a gigabyte, I could do that. - what hash table guidelines? I have only about 50 Mb of free RAM for ExaChess and the two engines - I'll have to play to see what memory partition that means for each engine. I assume that "as large as possible" is the rule of the day for the hash tables (although, at 5 seconds/move on my 180 MHz machine, small hash tables might be ample and more agile. - what partition of available RAM for programs with multiple hash tables (e.g., pawn and transposition). Please let me know what you think. -Richard
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