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Subject: Re: questions about using fget as waiting loop

Author: Anthony Cozzie

Date: 10:16:04 08/31/04

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On August 30, 2004 at 19:31:30, Dieter Buerssner wrote:

>On August 30, 2004 at 19:18:33, Uri Blass wrote:
>
>>Today I check every 8192 nodes and movei is a slow searcher so even on fast
>>hardware it is doing it less than 100 times in a second.
>>
>>I do not like to spend time during pondering because of not getting the time
>>command fast enough but if I look very often for winboard commands movei is
>>slowed by a significant factor under winboard.
>>
>>How do you deal with that problem(I want movei to be able to play with ponder on
>>even at 5 seconds per game without losing on time at least if I disable
>>animation under winboard).
>
>I ignore this problem. My engine will not be able to play 5 second games with
>ponder on without much losing on time. I don't care. I call inpu_available about
>10 times per second. For this, the overhead is practically zero. Perhaps calling
>it all 100 nodes would still give no significant overhead (I did not measure or
>try it, because I was not interested yet in that fast time controls - but I
>might try soon). Then, this should be enough for 5 second games. The
>multithreaded approach should have no overhead at all (just checking one
>variable each node).
>
>Regards,
>Dieter

Zappa is 50 times per second (20 ms timer).  I think that is still very little
overhead on a fast processor, although maybe I should play with it a bit.

anthony



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