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Subject: Re: Can a Programming Language Cause Engines to be Slow?

Author: David Rasmussen

Date: 04:40:25 11/15/02

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On November 14, 2002 at 13:06:17, Robert Hyatt wrote:

>
>You keep saying that.  I keep asking for concrete examples of where the compiler
>produces incorrect code.  To date you have not posted one single example.
>Several
>here at UAB have tested this thing carefully and we could find no bugs in some
>major codes we run, both integer and floating point codes in fact.
>
>Intel is faster than gcc 3.2 for me, by a significant margin.  And they produce
>_exactly_
>the same node counts for searches of a billion nodes or more.
>

Have you tried the -fprofile-arcs and the -fbranch-probabilities options with
gcc 3.2 ? They gave my bitboard-based engine 30%, which makes it as fast as with
MSVC and Intel.

/David



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