Computer Chess Club Archives




Subject: Re: Perft 5,6 {Fastest program is List}

Author: Dann Corbit

Date: 16:10:40 06/05/02

Go up one level in this thread

On June 05, 2002 at 19:01:42, Dieter Buerssner wrote:

>On June 05, 2002 at 18:55:50, Uri Blass wrote:
>>It is possible to play the program against itself under winboard without a
>>special command so I do not see a reason for a special Auto command.
>An auto command will need less resources. Only once the code will be in memory,
>and the same for the hash tables (if you assume an engine with assymmetrical
>evaluation some complications may arise). So you can use double hash size at
>least. Also, it may be much more easy to debug/profile/... a stand alone session
>of the engine, than the engine running under some GUI.

Besides, if you have only one CPU, half of the time will be idle waiting.
That will really skew the time resources and also completely hide the
bottlenecks (probably reading from stdin will look like the hot point).

Playing against yourself also means that you do not have the same hash table.
Your program will compute faster if it always guesses exactly right and does not
have to compute each hash value twice.

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