Ray is a Go (Weiqi, Baduk) game engine based on Monte-Carlo tree search without Deep Learning.
日本語はこちら.
- 'cd' to the directory which includes 'Makefile'
- Type 'make' to compile
- Place parameter files to
sim_paramsanduct_paramsdirectories (You can download parameter files from here)
When using a GUI that supports GTP (Go Text Protocol), the following command can be used Ray as a engine.
./ray
Ray's command line options are as follows,
| Option | Description | Value | Example of value | Default value | Note |
|---|---|---|---|---|---|
--size | Size of go board | Integer more then 1 and less than or equal to PURE_BOARD_SIZE | 9 | PURE_BOARD_SIZE ( = 19 ) | PURE_BOARD_SIZE is defined in include/board/Constant.hpp |
--komi | Komi value | Real number | 6.5 | KOMI ( = 6.5 ) | KOMI is defined in include/board/Constant.hpp |
--superko | Positional super ko | - | - | - | Supporting positional super ko only |
--handicap | The number of handicap stones | Integer more than 1 | 2 | 0 | This option is for debugging. |
--cgos | CGOS player mode | - | - | - | Activating capturing all dead stones mode |
The --playout option, the --const-time option, and the --time option are effective when specified last, respectively.
| Option | Description | Value | Example of value | Default value | Note |
|---|---|---|---|---|---|
--playout | The number of playouts per move | Integer more than 0 | 1000 | - | |
--const-time | Time to thinking per move (seconds) | Real number | 7.5 | CONST_TIME ( = 10.0) | CONST_TIME is defined in include/mcts/SearchManager.hpp |
--time | Total remaining time for a game (minutes) | Real number | 1800.0 | - | |
--thread | The number of search thread | Integer more than 0 and less than or equal to THREAD_MAX ( = 64 ) | 16 | 1 | THREAD_MAX is defined in include/mcts/UctSearch.hpp |
--reuse-subtree | Reusing MCTS sub-tree | - | - | - | |
--pondering | Pondering on opponent's thinking time | - | - | - | |
--tree-size | Maximum number of MCTS nodes | Integer power of 2 | 16834 | UCT_HASH_SIZE ( = 16834 ) | UCT_HASH_SIZE is defined in include/board/ZobristHash.hpp |
--resign | Resign threshold | Rean number more than or equal to 0.0 and less than or equal to 1.0 | 0.1 | RESIGN_THRESHOLD ( = 0.20 ) | RESIGN_THRESHOLD is defined in include/mcts/MoveSelection.hpp |
When the --pondering option is enabled, the --reuse-pondering option is automatically enabled automatically.
| Option | Description | Value | Example of value | Default value | Note |
|---|---|---|---|---|---|
--no-debug | No debug message mode | - | - | - |
By default settings, Ray will consume 10 seconds each move on a single CPU and require 800MB of memory.
./ray
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
Ray is distributed under the BSD License. Please see the "COPYING" file.
rayauthor19x19@gmail.com (Yuki Kobayashi)