Author: Ed Schröder
Date: 03:54:38 03/02/01
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On March 02, 2001 at 05:36:49, Terry Ripple wrote: > >I'am very curious if Rebel's calculation of it's rating has a limit on how high >a rating it can calculate! I'am puzzled, because i'am only getting a rating of >"2677" on my Athlon 1,1Ghz compared to some other posts claiming more than i'am >getting, and they are using 800 to 900 Mhz machines! I made sure there were no >programs running in the background before i started up Rebel. > > Is there something else i could do to check if there is a possible CPU problem >i may have? I could use some good suggestions! > >Thankyou in advance for any help! > >Best regards, >Terry There is no limitation to the current used formula. I guess if there was a 10 Ghz PC the rating (maybe) would go over 3500 which in nonsense. The formula has a lifetime of say 3 years, after that it simply needs a change. I believe at the time of Rebel10 it was the last time I made changes. The formula during start-up takes about a second, in this second some typical chess code is processed and timed. Based on the result an elo is calculated. All of this is dependant on the newest technology, integer performance, cache behavior, changed (improved) instruction timings, branch prediction, cpu type and and and... Quite messy to get a reliable rating for all the current available PC's as it should produce decent elo ratings from Pentium 90 -> nowadays. I am surprised by the 2677 on an Athlon 1.1 GHz, that is something I get on PIII-800. Ed
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