Author: Uri Blass
Date: 10:51:24 08/23/03
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On August 23, 2003 at 13:40:06, Jonas Bylund wrote: >On August 23, 2003 at 13:24:12, Rajen Gupta wrote: > >>i'm sure you have tested on a single cpu comp wih ponder off! >> >>and if so this result is meanigless! >> >>as i have posted many times that is like asking boxers to fight with one hand >>tied behind their backs or sprinters to run a race one legged and then trying to >>compare that with the real thing! > >It is only meaningless in comparing his results to SSDF, ponder=off matches on >one cpu are not meaningless. Your comparison to boxers and sprinters are >meaningless though, look at how much extra depth (at that timecontrol) the >engines get's from pondering... If we say that a doubling of speed adds 50-70 >elo points and the program is say 2650 with ponder=on then you get a 2600 >performance with ponder=off which is equivalent to a sprinter missing a toe or a >boxer missing a finger :) > >Jonas you get even less than it. pondering gives less than doubling the speed and maybe gives 30 elo. the results with ponder on is usually almost the same as the results with ponder off. Comparison with the ssdf is meaningless only because junior of 2003 is by definition not Junior7. If he got an engine of 2003 when he bought Junior7 then he got something that is not Junior7. I think that most customers of Junior7 did not buy it in 2003 so the results of his Junior are simply irrelevant for them when they need to decide if to buy Junior8. I am also not sure if other people who bought Junior7 in 2003 got the same Junior that he got and it is possible that the fact that he got an engine of 2003 is simply a mistake of chessbase that put the wrong engine in their CD. Uri
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