Author: Dann Corbit
Date: 22:39:44 12/20/99
Go up one level in this thread
On December 21, 1999 at 01:33:47, Greg Lindahl wrote:
>On December 21, 1999 at 01:26:41, Dann Corbit wrote:
>
>>Which chess engine spends 90% of its time in eval?
>
>The author can post if he likes.
>
>>I expect it could use a hair of tuning before commiting it to silicon.
>
>You are assuming that it's needlessly inefficient? Why?
Experience with those I have seen only. Typically, programs which spend a huge
time in eval have some kind of obvious tuning that can speed things up a great
deal. Does not mean that it is always the case. I have gone through the source
of 20 or 30 programs (guestimate) and it was always the case that those that
were dominated by eval had something silly going on.
I suppose slow searchers might be different, since I have not fooled around with
any of those {other than slow because of simplicity or stupidity}
The best programs that I have been able to get my hands on usually spend from
30% to 50% of their time in eval.
These programs are not just hacks written by drooling idiots. Some of them are
competitive with the top commercial programs in the world. At least one of them
is written by the auther of a former world-champion program.
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