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Subject: Re: Intel 8 vs MSVC 6 /w Crafty

Author: Peter Skinner

Date: 07:34:54 02/16/04

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On February 16, 2004 at 10:27:24, Ingo Bauer wrote:

>Hi
>
>>If you didn't change hashing sizes, something is broken in the compiler
>>options...  apparently a bad optimization somewhere.
>>
>>node counts can not vary...
>
>Something is broken! I have post one below Bryan's and my nummbers differ in
>node counts as well. It seems the MSVC6_non-SMP is broken.
>
>Ingo

MSVC 6.0 /w sp5 /wo /dfast

EPD Kit revision date: 1996.04.21
unable to open book file [./book.bin].
book is disabled
unable to open book file [./books.bin].

Crafty v19.10

White(1): bench
Running benchmark. . .
......
Total nodes: 89942714
Raw nodes per second: 708210
Total elapsed time: 127
SMP time-to-ply measurement: 5.039370
White(1):

MSVC 6.0 /w sp5 /w /dfast

EPD Kit revision date: 1996.04.21
unable to open book file [./book.bin].
book is disabled
unable to open book file [./books.bin].

Crafty v19.10

White(1): bench
Running benchmark. . .
......
Total nodes: 89942714
Raw nodes per second: 686585
Total elapsed time: 131
SMP time-to-ply measurement: 4.885496
White(1):

I get exactly the same node code on two different "versions" of the non-smp
build of the MSVC compile.

In fact I get the exact same node count on all of the versions.

What I do notice is if the /DFUTILITY option is not set the nodes are different.
I compile all of mine with it _enabled_.

Peter.





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