Author: Christophe Theron
Date: 23:44:52 08/30/01
Go up one level in this thread
On August 31, 2001 at 02:34:47, Peter Berger wrote:
>On August 31, 2001 at 00:11:24, Uri Blass wrote:
>
>>I agree with christophe that the time control is too fast.
>>
>
>Christophe said nothing like that . He expressed his concern that the 486
>computer is still too fast compaired to a Palm and his speed numbers indeed
>suggest this is probably true ( his idea to make up for this with the longer
>time conrol assumes diminishing returns btw, doesn't it ;) ? ).
No I just assume better branching factor from my program.
Tiger needs less time than Genius to complete each successive iteration, and the
effects of this better branching factor shows up more clearly when more
iterations (ply depths) are completed.
In sports, we would say that Genius has more explosive power (is a good
sprinter) but gets tired very quickly. So if the race lasts longer, Tiger does
not get tired when Genius is exhausted already.
You are not going to see this difference if you let them run only short races.
> I will have to
>think about how to get a good and valid test of speed.
>
>>I am more interested what happens at tournament time control(120/40)
>
>Then please test it :).
>
>>and I believe that tiger earns more from time because Genius is optimized for
>>blitz.
>
>People keep saying that all the time .. I don't buy it - a little excerpt from
>the SSDF list:
>
> 61 Shredder 1.0 Pentium 90 MHz 2282 59 -58 145 53% 2263
> 62 Nimzo 3.0 Pentium 90 MHz 2279 26 -25 767 58% 2220
> 63 R30 v. 2.5 2274 41 -38 343 69% 2135
> 64 Hiarcs 3.0 Pentium 90 MHz 2273 30 -30 545 56% 2228
> 65 Genius 4.0 DOS 486/50-66 MHz 2265 23 -23 900 49% 2269
> 66 Junior 3.3-3.5 Pentium 90 MHz 2257 31 -31 516 47% 2277
> 67 Genius 3.0 486/50-66 MHz 2255 24 -23 910 62% 2168
> 68 MChess Pro 4.0 Pentium 90 MHz 2254 29 -29 578 52% 2238
> 69 CometA90 64MB P200 MMX 2252 37 -39 358 36% 2351
> 70 192 64MB P200 MMX 2248 44 -46 248 41% 2316
> 71 Fritz 3.0 Pentium 90 MHz 2240 18 -19 1438 42% 2297
> 72 Mephisto Genius 2.0 486/50-66 MHz 2235 23 -23 917 58% 2176
> 73 Fritz 4.0 Pentium 90 MHz 2233 40 -39 324 60% 2163
> 74 WChess 1.06 Pentium 90 MHz 2230 20 -20 1222 39% 2308
> 75 MChess Pro 5.0 486/50-66 MHz 2227 26 -26 691 50% 2229
> 76 Kallisto 1.98 Pentium 90 MHz 2226 21 -22 1049 42% 2283
>
>It seems that Genius 4 is the strongest computer program tested on 486 CPUs so
>far at tournament time control and can even compete with Shredder 1 , Nimzo 3
>and Fritz 4 on Pentium 90 and Comet A90 on Pentium 200 MMX .
>
>If you think about it - how did Genius get all of its WM titles with its said
>blitz optimization ?
"Blitz" means nothing. It all depends on the speed of the computer.
Blitz for an Athlon 1200 is (very) long time controls for a 386.
I would not say that Genius is optimized for blitz. I would just say that modern
programs have better branching factors, and if you follow the explanation given
above it tells you why Genius was so good when computers were slow (or on fast
computers at blitz/bullet time controls).
Christophe
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