Author: Mike Adams
Date: 00:41:28 10/04/00
In the past pulsar did not whisper nodes per second. at times it during a game
it seemed to get reduced depth and i thought that might by hyperactive
extensions. But recently I added a nodes per second counter. It is a slow
program it gets from 18K a second to 30+k a second in endgame. Never below 15K
as a rule. This is on an AMD k6-2 500 computer with 128 megs of ram. Hash size
is about 10 megs i would guess. It only hashes one move a search call the best
move and does not do transpostions ect. So hashing is just for move ordering.
Yesterday I was watching pulsar play and for the first game it was fine. I
came back around move 10 of the second game and noticed for the last 9 moves, it
went out of book early the opponent played an odd response on move ..1, its
nodes per second had dropped by a factor of 10. A couple of moves later it was
back to normal. The nodes per second was really low though during those 9 or 10
moves. Like 1600-2200 nodes per second. I tested those positions later and
pulsar was able to handle them normally. In fact it got good depth in the
console version later in only a few seconds were as in the game it got poor
depth and very low nodes per second.
I cant imagine anything in my program causeing that radical a drop in nodes
per second. What could be going on, could it be hardware. What should i do to
fix this. Losing speed by a factor of 10 is going to hurt pulsar when it plays
and this problem kicks in. thanks Mike Adams
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