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Subject: Re: Chess Tiger Question

Author: Alvaro Rodriguez

Date: 03:28:51 04/14/00

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On April 13, 2000 at 13:59:05, Christophe Theron wrote:

>On April 13, 2000 at 13:33:12, Alvaro Rodriguez wrote:
>
>>On April 13, 2000 at 12:49:49, robert michelena wrote:
>>
>>>Christopehe,(or anyone), I may have missed the post where it was explained what
>>>the engine priority choices on engine setup do.  I currently have tiger set on
>>>HIGH ENGINE PRIORITY.  Would this maximize strength?
>>>
>>>Thanks in advance
>>
>>I think that high engine priority is set when you only have Rebel-Tiger running
>>on your computer, when you have other programs running you should set it to
>>normal.. I´m not sure, but I hope so :-)
>>
>>Regards
>>Alvaro
>
>
>Actually, as soon as Rebel-Tiger is loaded, you have 2 programs running: the GUI
>and the engine. OK, they are not 2 different programs, the correct term is
>"processes", or "threads".
>
>Windows is in charge of the control of these processes. It detects when one is
>idle, and in this case let the other one take 100% of the CPU. Generally, the
>GUI is idle, so the engine takes 100% of the computing power.
>
>However, there is a special time when the 2 processes are not idle. It's when
>you do a move and the engine has to start searching. At that moment, the GUI has
>to execute several tasks, such as repainting some areas of the screen. The
>engine, simultaneaously, starts thinking.
>
>It is interesting to give a higher priority to the engine when you use fast time
>controls (game in 3 minutes or faster) or a very slow computer (a 486 for
>example).
>
>In this case I have noticed that the NPS is higher with the engine on high
>priority.
>
>At long time controls on a fast computer, it will make no difference.
>
>
>
>    Christophe

Thanks for a good post..

Alvaro



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