Author: Christos Gitsis
Date: 17:22:22 04/30/05
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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 I have tested two different versions of Crafty-19.19 using my Athlon 64 3400+: - Under 32-bit Windows XP the fastest version I could find in the Internet (among about 8 different executables) runs at an average of about 1.5 million NPS and has reached a maximum of 1.7 MNPS. - Under 64-bit Gentoo Linux it runs at an average of 2.2 million NPS and has reached a maximum of 2.48 MNPS. The increase in speed is 40~50%. I hope this helps
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