Computer Chess Club Archives




Subject: Re: Verified Null-Move Pruning, ICGA 25(3)

Author: Gian-Carlo Pascutto

Date: 04:10:17 11/22/02

Go up one level in this thread

On November 22, 2002 at 06:58:49, Uri Blass wrote:

>On November 22, 2002 at 06:49:45, Gian-Carlo Pascutto wrote:
>>On November 22, 2002 at 06:42:39, Omid David Tabibi wrote:
>>>Comparing search times has the following problems:
>>>1. It is not reproducible:
>>>    - If you manage to speed up your program (without algorithmic change),
>>>      the results will be different.
>>Huh? You should never make such changes when you are already testing
>>your algorithm!
>>>    - If you move to another platform, the results will be different.
>>Howso? The absolute times will be different yes. The ratios, not.
>I do not agree that the ratio has to be the same.
>It is possible that the change in the algorithm cause the computer to
>have different ratio in speed between different hardwares.

You could make a change so that the algorithm stresses memory much
more and it would run (relatively) slower on a computer that has slower
ram compared to the CPU.

This means the algorithm's efficiency is dependant on hardware.

I think it would be very *good* if you would figure this out!


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