Author: Uri Blass
Date: 14:41:09 07/09/02
Go up one level in this thread
On July 09, 2002 at 15:25:17, Robert Hyatt wrote: >On July 09, 2002 at 13:30:55, Marc van Hal wrote: > >>On July 09, 2002 at 02:36:22, Uri Blass wrote: >> >>>On July 09, 2002 at 01:34:04, John Reynolds wrote: >>> >>>> >>>> >>>> If I understand correctly, Diep is using a Supercomputer, shouldn't it be doing >>>>much better in this tournament, or is it to early to Judge? I mean the Computer >>>>World Championship ofcourse. >>> >>>You did not understand correctly >>> >>>see http://www.talkchess.com/forums/1/message.html?238965 >>> >>>I also read that in another post that the prices for one hour of the super >>>computer are very high so I guess that people need to be rich in order to use >>>the super computer. >>> >>>I guess that in order to use the super computer you need a lot of hours of >>>testing in the super computer to see that things work and if you need to pay >>>some hundreds of dollars for an hour then it is something that most programmers >>>cannot even consider and I talk only about 60 cpu's because the prices for 1024 >>>cpu's are even higher. >>> >>>Uri >> >> >>In fact I saw the statements of the WCCC and I ad once was thinking some >>programs will perform worse if they are just installed on a computer >>Leading to false results >>All program with learning have trouble with this only one more then the other. >>I don't know the reason of this but I do know this from expierince. >>But in fact it is like a Tournament player who prepared his games and when he >>has to play the tournament he has to forget everthing he prepared. >> >>Marc van Hal > > >There are several issues: > >1. using unusual hardware is non-trivial. NUMA machines are one example. > >2. Going faster may well cause your eval to misbehave as it is very easy to >tune an evaluation to a specific search depth and going much deeper or shallower >can cause some of that tuning to be wrong. I agree about the other problems but 2 is not a serious problem. Every program that I know is going to play better if you give it 10 hours per move and not 3 minutes per move. Uri
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