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Subject: Re: Rough comparison between rotated bitboards and 0x88

Author: blass uri

Date: 01:58:36 06/21/00

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On June 21, 2000 at 03:17:10, Ed Schröder wrote:
<snipped>
>I once rewrote a time consuming part of EVAL storing all possible results
>in a pre-compiled table. 2-3 table lookups replaced a large piece of code.
>I estimated the gain in speed on about 12-14%. In practice it was only 1%
>faster. Reason was blowing up the data cache.

I guess that the change in speed is dependent on the computer and it is possible
that the same change that give you only 1% will give in another computer more
than 1% and will do you slower in another computer.

The question is what we can expect about the future.

Can we expect this to be more than 1% in tommorow hardware?

Uri



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