Author: Uri Blass
Date: 14:37:40 01/28/01
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On January 28, 2001 at 17:09:27, Severi Salminen wrote: >>I do not understand why do you work so hard in playing games. >> >>I think that you should find the number of nodes per seconf of nimzo8 and >>Junior6 on: >> >>1) Celeron 333 >>2) K6-2 500 >>3)Athlon 800 >> >>For example >>If you find that nimzo's number are 250000,500000,1000000 >>when Junior's numbers are 300000,500000,830000 then it will be an excellent >>proof that Nimzo earns more from the new processors. > >That is very true and you just presented a good way to use NPS as an indicator. >BUT, it still won't tell you probably anything about playing strenght. I just >realized this with my engine. At fast time controls (this case represents a slow >computer) a version without SEE seemed to perform better than a version with >SEE. But with longer time control (same as fast computer) SEE performed better. I do not think that longer time control is the same as faster computer. I will give an extreme example: If you give Crafty to play against nimzo8 when both programs use one processor system then it is going to do worse results relative to the results of it if you give both programs 4 processors. The reason is very simple Nimzo knows to use only one processor out of 4. My idea is that maybe Nimzo knows to use better the fast processor than Junior. Both programs earn from faster hardware and the case is not extreme as the previous case when one program earns nothing but it is possible that one of them earns more. The claim of the previous poster was that nimzo8 is not going to do good results in the ssdf because nimzo likes the fast processors. I believe that the time control that he used(1 hour per game) are faster than the ssdf time control(2 hours for 40 moves) so the only logical reason for nimzo not to like the slow processors(if this is the case) is the number of nps. >This can be result of better branching factor of version with SEE so it can >reach higher depths with less speedup than SEEless version. The same goes with >above programs. Junior might be actually stronger than Nimzo even that Nimzo's >NPS increased more. We still need games, many games... > >Severi The question is not which program is better but which program earns more from fast processors. I do not use the number of nodes per second to decide which program is better but the increase in % in the number of nodes per second to decide which program earn more from the fast processors. I will get the same conclusion if the number of nodes for one of the programs is divided by 100. Uri
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