Author: M Hurd
Date: 05:26:26 06/21/05
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On June 21, 2005 at 08:18:49, Joachim Rang wrote: >On June 21, 2005 at 02:54:06, m.d.hurd wrote: > >>Just for fun I set Fruit 2.1 standard versus Fruit 2.1 with Futility and Delta >>pruning switched on. >> >>2 rounds of 5 games at game in 30 minutes. 128 kb cache for each engine using >>the supplied book_small.bin >> >>I wanted to see how differently they played and whether the extra settings made >>much difference. >> >>10 games is obviously not enough to say one way or another, however maybe >>someone would like to test this further. >> >>For some strange reason I called the Fruit 2.1 with the extra settings Fruit 2.1 >>vr/dp, anyway .... >> >>The games were run on a single AMD 2400 XP with 1 gb memory. >> >>Round one Fruit 2.1 vr/dp scored 3.5 and Fruit 2.1 standard 1.5 >> >>Round two Fruit 2.1 vr/dp scored 3.5 and Fruit 2.1 standard 1.5 >> >>Total 7 points out of 10 for Fruit with the extra settings. >> >>Fruit 2.1 standard settings never won a game. >> >>If anyone wants the pgn just let me know. >> >>Regards >> >>Mike. > > >Prior to release 2.0 I tested it thoroughly. Ater 400 games it scored about 10 >Elopoints better than without futility and delta pruning. It did very well in >Testsuitesthough. Fabien decided against it, since 10 Elopoints were too small >to be sure that it helps and since I had only data for very fast blitz and the >new history pruning was a clear improvement. I think it is a bit more likely >that it helps than that it hurt but the difference will be small (10 Elopoints. > >Perhaps someone will make a really significant test sometimes? > >regards Joachim Perhaps the guys at CEGT can help with this, I believe they are currently testing the standard version now. In some of the games it looks as though the nodes per second drops with futility and delta pruning but i guess its looking deeper perhaps. Regards Mike
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