Author: Robert Hyatt
Date: 06:27:28 05/03/00
Go up one level in this thread
On May 03, 2000 at 03:59:20, pavel wrote: >On May 03, 2000 at 03:42:48, Dann Corbit wrote: > >>On May 03, 2000 at 03:36:45, pavel wrote: >> >>>Hi, >>> there have been a recent debate like "thingie" about crafty "does better >>>utilization of computer" then fritz (or most program). In reply to that Bob >>>posted that it is not true , however the utilization should be allmost the same. >>>And i believed that too. But wasnt sure about it. I downloaded this program >>>called "taskinfo", (shareware) and i did a test on crafty and fritz running on >>>one cpu under fritz interface. As Bob said the utilization was more or less the >>>same, it didnt differ more than 3 to 4% for both programs. It wasnt stable once >>>it was 4% better on fritz the other time it was 3% better on crafty. But also >>>this differances was also very rare. the most frequent differances was .50%. So >>>you can see (Christophe) that crafty_doesnt_utilize_more >>>_of_the_computer_resources ;0. To be sure that its the same in all circumstances >>>i tried it under winboard (crafty and goliath) and also used other programs >>>(exchess,comet,TCB,chessmaster7000). and they are more or less the same. >>>just sharing info, >>>thanks >>>pavel >>> >>>ps, thus it mean that comp vs comp games are accurate in single cpu. If we >>>provide the same hash size, and everything else, wont it be the same for both >>>the programs? the only differance would be that in seperate CPU, programs would >>>play stronger, but in single cpu they might play comperably weaker. >> >>Yet it is possible that Christophe is right also. Probably, he was talking >>about crafty with its own dedicated machine and pondering on. In such a >>circumstance, maybe crafty can pull a few more cycles. >> >>Try testing that setup too, and watch the graph to see if it stays redlined 100% >>of the time, of if it dips sometimes for the other engines. > >Hi dann, > No i think he was talking about one cpu. The thread was from one of the >chessfun's test on single cpu. Crafty was doing well on a standard series >(probably 15 mins per game). But i didnt mean to point out Christophe alone, he >thought crafty might have a better utilization code. he thought, maybe he is not >sure himself ;). I was just curious about it and did a test. So what do you >think dann thus it prove that single cpu comp-comp matches are fair?? >thanks >pavel > > >ps, i tried the single cpu test thingie you asked, no programs thus 100% all >thus their best, which is 99% :) It doesn't say a thing about whether single-cpu matches are 'fair'. It just says that both engines get about 50% of the processor cycles, which was some- thing I said would happen. But there are other things like hash and who knows what else.
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