Author: Daniel Pineo
Date: 09:03:56 05/02/05
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On May 01, 2005 at 23:27:40, Eugene Nalimov wrote: >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. I would expect so, microsoft makes quality stuff nowadays. > >So on 64-bit Windows increase would be even larger. > >Thanks, >Eugene I was just pointing out that giving the nps increase from 32bit windows to 64bit linux doesn't really pinpoint the benefit of goint to 64bit since some of the increase may be due to the OS change. - Dan Pineo
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