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Subject: Crafty 64-bit speedup

Author: Slater Wold

Date: 22:04:54 03/25/04


All week I have been hacking away at making the fastest 32-bit & 64-bit binary
with the AMD64 compiler I have access to.  I have been told that they are the
same compiler; just one has the AMD64 additions.  Here are my results.


Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.10.2179 for 80x86
Copyright (C) Microsoft Corporation 1984-2002. All rights reserved.
Microsoft (R) Incremental Linker Version 7.10.2179
Copyright (C) Microsoft Corporation.  All rights reserved.

Using /O2, /Ot, /Og:

Total nodes: 89911558
Raw nodes per second: 1550199
Total elapsed time: 58
SMP time-to-ply measurement: 11.034483

Microsoft (R) C/C++ Optimizing Compiler Version 14.00.2207 for AMD64
Copyright (C) Microsoft Corporation 1984-2002. All rights reserved.
Microsoft (R) Incremental Linker Version 8.00.2207
Copyright (C) Microsoft Corporation.  All rights reserved.

Using /O2, /Ot, /Og:

Total nodes: 89913841
Raw nodes per second: 2140805
Total elapsed time: 42
SMP time-to-ply measurement: 15.238095



The fastest binary I can find *anywhere*, has been Russell's.  He compiled it
using all optimizations using .NET 2003 (he used VC_INLINE_ASM & ASM_INLINED,
which my compiler cannot use).  Here is its result:

Total nodes: 89908309
Raw nodes per second: 1696383
Total elapsed time: 53
SMP time-to-ply measurement: 12.075472




More engines to come soon...



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