Author: Eugene Nalimov
Date: 20:27:40 05/01/05
Go up one level in this thread
On May 01, 2005 at 21:01:17, Daniel Pineo wrote: >On April 30, 2005 at 20:22:22, Christos Gitsis 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 >> >>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 > > >Don't you think switching from windows to linux might have something to do with >that 40~50% increase? Last time I asked AMD people to check, 64-bit Visual C generated better code than 64-bit GCC 4.0. So on 64-bit Windows increase would be even larger. Thanks, Eugene
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