Author: Robert Allgeuer
Date: 01:50:07 02/28/04
Go up one level in this thread
On February 28, 2004 at 04:41:15, Vincent Lejeune wrote: >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 ! My results are with Crafty 19.6, the others with 19.10, possibly Bob can clarify, whether anything has changed in the bench command inbetween. Do not believe that the new 19.10 is roughly as slow as a 19.6 on a 1.1Ghz processor. And also look at the huge difference between 64 and 32 bit code, which is not exactly what SPEC results say either. Robert
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