Author: John Merlino
Date: 18:08:05 04/29/05
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On April 29, 2005 at 16:39:54, Kurt Utzinger wrote: >On April 29, 2005 at 16:33:43, John Merlino wrote: > >>On April 29, 2005 at 16:26:28, Uri Blass wrote: >> >>>I read that Shredder9 for 64 bit is released and my question is what is the >>>speed difference that program earn from compiling for 64 bits when you need also >>>64 bit window to run it. >>> >>>Can somebody tell me about the speed gain in nodes per second of all the free >>>source code programs including programs that do not use bitboard like tscp or >>>fruit and bitboard programs like Crafty. >>> >>>Uri >> >>In general, I have heard that, if all you do is recompile your program with a >>64-bit compiler, you should expect 5-15% speed improvement. > > This would not be much ... I am disappointed :-) > Kurt Of course, there may (or may not) be significant room for improvement via optimization. It totally depends on the architecture of the engine, and how willing the author is to change it. :-) jm
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