Author: Slater Wold
Date: 00:24:59 04/12/02
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Just came back from a 2 week vacation, and boy, it was nice. Also saw Marc Boulé found his way here; Welcome! Now, a DB rant: There are at LEAST 100 reasons I can think of why Kramnick would make such a ridiculous statement. Here are a few: 1.) to boost interest in the game 2.) to boost his own "man vs machine" repitore. example: "Kaspy couldn't defend man against the machine, I CAN!" 3.) refer to #2 and repeat, "..I can beat Fritz 7, and thus beat DB, and invite you to pay me $1,000,000 to beat your program! (And a small settlement if I lose).." Fritz 7 is a good program, without a doubt, one of the best for PCs. HOWEVER, get real. 4M "wiser" nps isn't CLOSE to 200M "wise" nps. No matter how you look at it. Crafty 17.07 is a good starting point. This is an older program, with a more basic search/eval, as compared to Fritz 7. Crafty 17.07 (K6-2 450Mhz) now holds a 2490 ELO on the SSDF list, while Fritz 7 (Athlon 1200mhz) has a 2748. Pretty big difference. Lets compare numbers: First we need to see what Crafty 17.07 would be rated running on the same computer as Fritz 7. We'll take the "generally" accepted rule that doubling Mhz is equal to 50 Elo. (Not exactly, but close.) Therefore we can estimate that Crafty 17.07 on an AMD Athlon 1200 would be rated (closely) about 2550 Elo. 198 Elo lower than Fritz 7 on the same HW. Crafty 17.07 benchmark on an AMD 1200 mhz: EPD Kit revision date: 1996.04.21 unable to open book file [./book.bin]. book is disabled unable to open book file [./books.bin]. Crafty v17.7 White(1): bench Running benchmark. . . ...... Total nodes: 81501850 Raw nodes per second: 696597 Total elapsed time: 117 SMP time-to-ply measurement: 5.470085 White(1): Roughly 700k nps = 2550 Elo 1.4M nps = 2600 Elo 2.8M nps = 2650 Elo 5.6M nps = 2700 Elo 11.2M nps = 2750 Elo (equal to Fritz 7) 22.4M nps = 2800 Elo 44.8M nps = 2850 Elo 89.6M nps = 2900 Elo 179.2M nps = 2950 Elo Give me a tough problem that Fritz 7 can solve, and I will give you a Crafty at 200M nps that can solve it in less time. Hell, give me a problem that Fritz 7 CANNOT solve, and I will give you a Crafty at 200M nps that can solve it. The arguement of "software is better now" is getting pretty old. NO IT IS NOT. Sure, 20%. 30% maybe. Hardware has done more for computer chess in the last 7 years, than will be done in the next 25 for software (something to the tune of 400%). Read: http://wondersmith.com/rants/howfar.htm. Junior 6 and Junior 7 are seperated by a mere 25 Elo on the SSDF, on the same exact HW. However Junior 7 on an AMD 1200mhz is 84 Elo points stronger than Junior 7 on an AMD K6/2 450mhz. I know that Deep Junior 7 gets around 2M nps on my 2x1.53Ghz system. Now imagine raising that 200M. I attempted to run the Hyatt vs Ed "NPS Challenge", however due to circumstances beyond my control, I had to stop after 4 40/120 games and 1 (adjourned) 40/120 vs 40/12000 game. Rebel 4 won ALL 40/120 games, and was down 2.xx when I had to adjourn the time-odds game. (Ed told me he was going to send me the real version of Century 4, but it never made it, and my "trial time" expired, which stopped me from using it anymore.) NPS is king. 15 years of HW advancements has given computer chess a 400% boost. Another 15 years *STILL* won't give us DB NPS numbers.
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