Re: [computer-go] scalability analysis with pachi

[dhillismail]

Thank you for posting these interesting results There seems to be a picture emerging that MCTS engines scale very well in self play, and apparently against other MCTS engines, but not so well against the non-MCTS version of Gnugo.

- Dave Hillis

-----Original Message-----
From: Jean-loup Gailly <jl...@gailly.net>
To: computer-go <computer-go@computer-go.org>
Sent: Thu, Jan 14, 2010 6:53 pm
Subject: [computer-go] scalability analysis with pachi

I did some 19x19 scalability experiments with pachi, written by Petr Baudis.

This was run on one machine using 15 out of 16 2.2 GHz cores, against

Fuego using 100K playouts on 15 cores of another machine.  The results

are encouraging. Pachi's strength continues scaling linearly (in elo)

with each doubling of the number of playouts:

pachi2 is an instance of pachi running on kgs.  It temporarily got a

2d rating on 19x19 but many dans are now trying to lower this :-(

Note that Petr should be congratulated for this, I only did minor

changes myself.

Jean-loup

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