Author: Vincent Lejeune
Date: 01:41:15 02/28/04
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On February 28, 2004 at 04:35:43, Robert Allgeuer wrote: >On February 28, 2004 at 03:33:00, Slater Wold wrote: > >>cl from the Windows 2003 Server DDK used in all compilations. No flags >>(optimizations) were used. >> >>64-bit: >>Microsoft (R) C/C++ Optimizing Compiler Version 14.00.2207 for AMD64 >>Copyright (C) Microsoft Corporation 1984-2002. All rights reserved. >> >>32-bit: >>Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 12.00.8804 for 80x86 >>Copyright (C) Microsoft Corp 1984-1998. All rights reserved. >> >> > > >>>Crafty: >> >>64-bit: >>Total nodes: 102625951 >>Raw nodes per second: 2052519 >>Total elapsed time: 50 >>SMP time-to-ply measurement: 12.800000 >> >>32-bit: >>Total nodes: 102625951 >>Raw nodes per second: 733042 >>Total elapsed time: 140 >>SMP time-to-ply measurement: 4.571429 > >I do not understand this result: on my old Athlon TB 1.1GHz I reach 615572 nps, >on a Athlon XP 2400+ 1100335 nps. In comparison the 733042 nps of 32 bit code on >AMD64 look way too slow. Maybe the compiler produces very slow code without any >optimisations at all; anyway, there must be a problem somewhere. > >Your results btw would suggest not to buy an AMD64 for chess at this stage, >because the vast majority of chess programs today is still on 32 bits and would >therefore run even slower than on older hardware. I do not think that this is >indeed the case. > >Robert May be the reason is different version of Crafty !
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