Author: Brian Richardson
Date: 21:28:09 01/07/05
Go up one level in this thread
On January 07, 2005 at 19:36:24, Sedat wrote: >On January 07, 2005 at 18:36:56, Russell Reagan wrote: > >>On January 07, 2005 at 13:07:03, Ingo Bauer wrote: >> >>>Hello >>> >>>In case you are still amazed why the engines do different moves in differnt GUI >>>do the following test: >>> >>>Two engines with a fixed balanced opening position (no books). Now start a 20 >>>Game match in the same GUI (choose one) with the same position and the same >>>color for each engine, of course learning should be switched off and the time >>>for each game should not be too short (eg. 15 min each side) >>> >>>You will see that you do not get 20 identical games. Not all moves are allways >>>reproducable, most chess engines are not deterministic and it is gettiing worse >>>if you use dual engines. >>> >>>Bye >>>Ingo >> >>If there are nondeterministic single-cpu chess engines, then maybe a better test >>for GUIs would be to use simple, open source engines. Do you think a simple, >>open source engine such as TSCP is more likely to be deterministic? >> >>Or does the issue of time cause undeterministic behavior no matter what? i.e. >>maybe a background process (system process, firewall, antivirus, etc.) randomly >>takes enough CPU time away from a chess engine to cause nondeterministic >>behavior? > > >Always while i am running engine-matches : >------------------------------------------ > >-No surfing on the Net,no working with Word,not doing some Programming etc. > >-Before to start each tournament under both GUI's the PC is restarted ! > >-For each GUI was setuped separate (different)folder of engine.exe > >-No any program is insalled in the TaskBar ! > >Sedat It might work if you only search to a fixed depth, not based on any time controls from the same (e.g., Nunn) starting positions.
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