Author: Tord Romstad
Date: 02:54:04 10/11/05
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On October 11, 2005 at 04:08:36, Andreas Guettinger wrote: >What's intersting is that the kn/s on my Athlon64 3400 is quite different >between Fruit2.1 and Fruit2.2. >Fruit 2.1 around 900 kn/s in middlegame >Fruit 2.2 around 550 kn/s in middlegame. > >Maybe more knowledge or badly optimized compile? Fruit 2.2 uses futility pruning and extended futility pruning, which Fruit 2.1 did not (IIRC). Futility pruning tends to slow down the n/s count considerably. Tord
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