Author: James T. Walker
Date: 06:45:35 01/14/02
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On January 14, 2002 at 02:31:06, Brian Katz wrote: >I am confused about the Optimize Strength feature in Fritz. >The Optimize Strength feature is only available in the Long games and Blitz >modes. When optimizing strength, in addition to some features being turned off, >the Hash Tables are set to the HIGHEST setting. As far as I know,you should not >have the Hash Tables set too high for Blitz. The Fritz 7 help files suggests 4 >to 64 MB as plenty for Blitz. So, if that is the case, why does Optimize >Strength set the Hash Tables in Blitz to the Hightest setting. The functions >that are turned off, such as multimedia, can be done manually. >The opening book options are usually configured manually also. In fact, >everytime you change the time control, the "variety of play" option is turned >up, so you have to manually turn it down again. Many do not realize that. >I only have a 350 MHz Pent II, with 384 sdram. The maximum Hash Table setting >for my program with that much ram should only be 288 MB, according to Fritz. >Chessbase suggests the formula for optimal Hash Tables to be as follows: >2 x (Processor Speed) x (Avg. Seconds per move) divided by 1000 to give you the >proper Hash Table MB setting. Based on a 5 minute speed game, which would be >approximately 7.5 seconds per move (DUE TO THE FACT THAT THE FIRST 10 MOVES ARE >USUALLY INSTANTANEOUS AND THE AVERAGE GAME IS AROUND 50 MOVES. >For my system, based on the formula now, the maximum Hash Table setting for a 5 >minute speed game should only be 5.25 or 5 to 6 MB rather. > >2 x Processor Speed x Avg. Seconds per move > 2 x 350 MHz 300 SEC divided by 40 moves > 700 x 5.25 divided by 1000 = 5.25 > >That is a far cry from what the Optimize Strength feature will set it at for a 5 >minute game. > >Any insights on this would be greatly appreciated. > > > >Would someone explain Hello Brian, I cannot explain but I can tell you what I have found. I used to run Fritz with only 16 Meg hash at blitz. With Fritz 7 I did some experimenting and found that running Fritz 7 with 256 Meg of hash (G/5min) made no appreciable difference in it's performance. I am running Fritz on an Athlon 1400 Mhz with 512M/760M ram. Jim
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