Author: Sune Fischer
Date: 07:28:24 11/26/02
Go up one level in this thread
On November 26, 2002 at 07:21:12, David Rasmussen wrote:
>On November 26, 2002 at 05:22:42, Dann Corbit wrote:
>
>>
>>Are you absolutely sure that the nodes are being counted correctly? This is not
>>exactly a wild-open sort of position with scads of deep combinations in waiting.
>> It's hard to imagine how the qnodes can go berserk like that.
>
>I'm pretty sure I'm counting them correctly. I count only the nodes that
>Q-search _generates_, not the node I'm in on entering Q-search. Normally, my
>Q-percentage isn't that high. Before I got SEE, it was regularly in the 60%'s.
>Now, it is usually about 20-40%. But in this particular position (and the ones
>"near" it), and probably many others, the Q-search explodes.
You must have some extension that goes mad, like a threat extension or
something. I get around 55% qnodes, so you are right it is high but not _that_
high.
>I'm counting like this:
Why not do it like this:
>Score Search(pos,...)
>{
> ++nodes;
> ...
> if (depth < ONE_PLY)
> return Quiescence(pos,...);
> ...
>}
>
>and
>
>Score Quiescence(pos,...)
>{
// no counter here...
> ...
> while (anymore interesting moves)
> {
> ...
> MakeMove(pos,move);
> score = -Quiescence(pos,...);
> UnMakeMove(pos,move);
>
> ++qNodes;
> ...
> }
>}
Then you just have total nodes = nodes+qnodes and the percentage will be
nodes*100/qnodes. Cheaper to do 1 add outside the search of course.
-S.
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