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Subject: Re: Crafty 1910 SE (2) vs Ruffian 2

Author: Paul Doire

Date: 14:55:52 02/07/04

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On February 07, 2004 at 17:43:49, Mike Byrne wrote:

>On February 07, 2004 at 17:33:37, Paul Doire wrote:
>
>>Hi ,
>>This is with Mike's new compile.
>>542 Mhz, Win98SE
>>128MBRam, 16Hash
>>3,4,5 Tablebases
>>Ponder Off
>>Own Books
>>5 Min blitz games
>>
>>CraftySE(2) vs Ruffian 2 Own books Blitz  5'
>>
>>                     123456789012345678901234567890
>>1   Ruffian 2.0.0    01010½1½1001½101011001½0010011 15.0/30  225.00
>>2   Crafty 19.10 SE  10101½0½0110½010100110½1101100 15.0/30  225.00
>>
>>Crafty looks good here. Also Mike on my machine your newest compile
>>is faster than both Dann's and Peter's.
>
>It's hard to believe 10%-15% speed up makes a difference - but it seem to for
>Crafty against Ruffian.  The latest PGO version is about 10-15% faster on all
>non P4 Intel processors.  This includes P3s, AMDs and Celerons.  For ALL P4s (so
>far) , the original version (dated 2/2/04) is faster.  Ironically, the PGO
>version was compiled with Intel's Profile Guided Optimizations tool.  this tool
>makes a faster compile for the non P4 (AMD, etc)) and a slower compile for P4s
>(Intel).
>
>I have a P4 (Intel).  Based on the benchmarks received, Crafty is much faster on
>AMD on a per/GHz basis.  In the old world (pre P4), that never used to happen.
>My next machine may be an AMD processor based.

http://www.aceshardware.com/read.jsp?id=60000253

Regards,
Paul



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