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Subject: Re: Chessmaster 9000 Engine Priority in New 1.0.2 Patch

Author: Odd Gunnar Malin

Date: 07:50:16 04/07/03

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On April 06, 2003 at 20:44:16, Ralph Patriquin wrote:

>Hi all,
>
>I've uninstalled, reloaded, and applied all patches to Chessmaster 9000 up to
>the new 1.0.2 version. I was most interested in the new Engine Priority option.
>However no matter how I set it, Task Manager shows all instances of Engines (as
>well as the GUI) running at Normal priority. So I don't understand what this
>feature is supposed to be doing. In fact before this I had been running The King
>engine using InBetween through the Chessmaster GUI so that I could have the GUI
>running at Normal priority and all engine instances running at Low priority,
>which greatly improved responsiveness. I had expected something similar with the
>new feature. Does anyone know what it's supposed to do? I'm running under
>Windows XP Home. Thanks.
>
>Ralph

You only sees the priority class in task manager. The GUI lower the thread
priority so you need another app. to see this (ex. Process viewer in MS C++). I
think also InBetween report this if you take away the priority swith in the ini
file.

Inbetween lower the process class with the priority switch. Thread priority are
passed too the engine automatic as InBetween sees them.
This class switch is for engine that isn't possible to lower with thread
priority, search thread isn't the main thread or/and started for each search.

Internal Windows have 31 level of priority mixed up by process-classes or thread
and if they are boosted (foreground).

Chessmaster lower the thread priority in the Mentor engine in the same way as
Fritz and Chess Assistant and probably more do it.

Odd Gunnar



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