emdio / ray

Computer Go Program

Installation

1. 'cd' to the directory which includes 'Makefile'
2. Type 'make' to compile

How to run

By default settings, Ray will consume 10 seconds each move on a single CPU and require 800MB of memory.

./ray

Ray has some options :

--playout 3000 Setting the total number of playouts per move. Default is 10000.

--time 1800 Ray plays with time settings 30:00 (1800 seconds).

--size 13 Ray runs on 13x13. Default is 19x19 (Maximum is also 19x19). You can ignore it if GTP sends 'boardsize' command.

--const-time 5 Ray considers 5 seconds each move.

--thread 4 Setting the number of threads. Default is 1 (Maximun is 32).

--komi 7.5 Setting komi value. Default is 6.5. You can ignore this command if GTP sends 'komi' command.

--handicap 4 Setting the number of handicap stones for test. This makes Ray ignore komi command from GTP.

--reuse-subtree This makes Ray use subtree if it exist. Default is off. This command saves Ray's remaining time.

--pondering This makes Ray think during the opponent's turn. (Automatically, this command turns 'reuse-subtree mode' on)

--tree-size Setting the number of uct nodes. Default is 16384. If you want to run Ray with many threads and a long time setting, I recommend you to use this command. The number of nodes must be 2^n.

--no-debug Ray never print Ray's log.

e.g.

Playing with 4 sec/move with 8 threads ./ray --const-time 4 --thread 8

Playing with 1000 playouts/move with 1 threads ./ray --playout 1000

Playing with 16 threads and 65536 uct nodes. Time setting is 30 minutes. Ray thinks during the opponent's turn. ./ray --time 1800 --thread 16 --tree-size 65536 --pondering

Licence

Ray is distributed under under the BSD License. Please see the "COPYING" file.