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Subject: Re: Branching factor, etc

Author: David Hanley

Date: 08:24:50 08/30/02

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Dan, i really appreciate your help with this.

I should have been more clear.  My sorted search from the opening position was
an eight ply search.  Here's a six ply search:

Score: -55
Searched 28744 nodes
Got 8063 hash hits (28 percent hits)
There were 16100 quiesce nodes
The pawn hash contains 2833 entries
Branching factor is 4.827881

So, that's 28744 total nodes, and 12644 non-quiesce nodes.

According to your list, a six ply search from the opening for the other programs
reports node counts of:

yace : 34,240
glc-218 : 12,970
gnu: 17,175
phalanx: 9,829
genesis 40,582

I'm not sure what to think.  Perhaps yace and genesis are counting all nodes,
and glc,gnu,and phalanx are reporting non-quiesce nodes.  If that is the case,
then things are going quite all right for me, and i am in the thick of things.
That makes sense to me, since i think yace is one of the strongest programs, yet
here it looks like phalanx is beating it by nearly a factor of four in search
efficency.

But this helps me a lot, i appreciate your taking the time to assist me.

dave







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