Author: Christophe Theron
Date: 10:23:52 07/13/99
Go up one level in this thread
On July 13, 1999 at 13:03:53, Robert Hyatt wrote:
>On July 13, 1999 at 04:00:04, Shep wrote:
>
>>On July 12, 1999 at 20:30:06, Gustavo Pereira wrote:
>>
>>
>>>Remember that node count is not a very valid way to account for a program's
>>>strength, take LGG2.05 as an example, I have seen it speeding far away from
>>>Fritz, yet it is not a very good chess playing program, it is an excellent
>>>problem (tactics!!) solver.
>>
>>LGG2 is probably the program with the most differing nps counts of all.
>>I have seen it hit anywhere between 200 K and 1,300 K on the PIII-550.
>>(No other program I know differs by a factor of more than 3.)
>>Whenever there are tactical shots in the position, LGG's node count explodes
>>whereas it remains low in positional situations.
>>Is there any explanation on why this happens?
>>
>>---
>>Shep
>
>
>probably move ordering. In tactical situations, move ordering is wrong... which
>makes the nps go up. in non-tactical positions, ordering is better, which makes
>the search more efficient, but the nps drops...
>
>I think most of us see this to some extent...
Another explanation is over-use of lazy evaluation.
Christophe
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