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Subject: Re: 64 bits report on diep

Author: Vincent Diepeveen

Date: 14:35:47 06/30/04

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On June 30, 2004 at 15:49:17, Slater Wold wrote:

>On June 30, 2004 at 12:57:26, Vincent Diepeveen wrote:
>
>>Hello,
>>
>>For diep moving from 32 to 64 bits is not so interesting. But the 8==>16
>>registers is.
>>
>>All tested with same diep version :
>>
>>at windows 64 bits :
>>
>>net2003 32 bits : 135k nps
>>amd SDK 64 bits : 130k nps
>>gcc 3.4 32 bits : 130k nps  (with pgo)
>>
>>at linux (gentoo) 64 bits :
>>gcc 3.3.3 64 bits : 140k nps
>>
>>So it's trivial that moving from 8 to 16 registers increased it by 10k nps,
>>despite also losing to larger instruction sizes.
>
>From compiling 20+ programs in 64-bit, you can expect 30% to 50% more from .NET
>2005 (Whidbey) over the SDK.
>
>So Windows 2003 AMD64 should be no less than 170k - 190k.

windows 2003 AMD64 is very poor and all other programmers who tried and are not
bitboard oriented (most of them aren't) report the same thing.

This is no exception.

Tests are done very accurately. No mistakes possible. No optimizations missed.

The AMD64 SDK also does not have any PGO.

Microsoft is doing real poor. GCC doing very well thanks to the wintel attitude
of microsoft.



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