Author: Javier Gamero
Date: 15:00:21 12/25/04
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Thanks for the useful answers. I have looked in "Selective Search" ratings and Shredder 7.04 is around 2700 at 1000MHz (it seems a bit high), so in your dual machine (2x1.7GHz) it must be around 2800, and then Crafty at full speed must be about 2600. It is probably a bit high, you did a "wild" estimation of 2550 USCF ant it could be aprox 2450 (FIDE). So I "prefer" your 2450 value as a first approx. I have a problem with "intensity" scaling. At int=1 and at int=50 you think Crafty is performing 1200-1300 and 1500-1600 respectively. It translate nicely at the usual rule 100 points per treble speed. Being 1500-1600 similar to your own ELO, I'd put pretty much confidence in those values (being aware that they are approximations anyway). The problem is the jump from int=50 to int=10000 (full strength?). It *doesn't* translate nearly well to Crafty's real ELO. If int=50 is ~1550 ELO, int=10000 would be around 2080 ELO, hundreds of point below its real full strength. This suppose almost 200 ELO per treble speed! (or almost 120 ELO for double speed!). It looks unreasonable, something is "happening" here. Why is so much difference between int=50 and int=10000? That diff is too big for being explained just by any slowness the new "intensity" code can produce even at 10000. Do you have any data about the nodes-per-sec Crafty is doing at those intensity values? (In my GUI, Crafty doesn't show NPS count when using "intensity"). My ELO is similar to 1600 as well, so I cannot test usefully what level of strength Crafty has with int=10000, but I can try a doubly approximative estimation using some CM personalities :-) . But I know two chained approximations can lead at one coarse result.
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