Value tournament

.circleci/Dockerfile

@@ -1,11 +1,9 @@
 FROM floopcz/tensorflow_cc:ubuntu-shared-cuda
+ARG DEBIAN_FRONTEND=noninteractive
 
 RUN wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS-2019.PUB && apt-key add GPG-PUB-KEY-INTEL-SW-PRODUCTS-2019.PUB && sh -c 'echo deb https://apt.repos.intel.com/mkl all main > /etc/apt/sources.list.d/intel-mkl.list' && apt-get update && apt-get install -y intel-mkl-64bit-2018.2-046
-RUN apt-get install -y clang-6.0 ninja-build python3-pip nvidia-opencl-dev libopenblas-dev libboost-dev nvidia-cuda-dev nvidia-cuda-toolkit libgtest-dev git ssh tar gzip ca-certificates sudo
+RUN apt-get install -y clang ninja-build python3-pip nvidia-opencl-dev libopenblas-dev libboost-dev libgtest-dev git ssh tar gzip ca-certificates libeigen3-dev sudo
+RUN apt-get install -y g++-8
+RUN apt-get install -y cuda
 RUN pip3 install meson
 RUN ln -s /usr/include/ /usr/include/openblas
-
-RUN curl -OL https://github.com/google/protobuf/releases/download/v3.5.1/protoc-3.5.1-linux-x86_64.zip
-RUN unzip protoc-3.5.1-linux-x86_64.zip -d protoc3
-RUN sudo mv protoc3/bin/* /usr/local/bin/
-RUN sudo mv protoc3/include/* /usr/local/include/

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: danieluranga/leela_chess_zero-lc0_ubuntu_builder:0.0.4
+      - image: danieluranga/leela_chess_zero-lc0_ubuntu_builder:0.0.8
     steps:
       - checkout
       - run:
@@ -11,18 +11,58 @@ jobs:
             git submodule init
             git submodule update --remote
       - run:
-          name: Build clang version
-          command: CC=clang-6.0 CXX=clang++-6.0 ./build.sh
+          name: Update Meson
+          command: pip3 install --upgrade meson==0.58.1
       - run:
-          command: cp build/release/lc0 /tmp/lc0-clang
+          name: Meson GCC
+          environment:
+            CC: gcc-8
+            CXX: g++-8
+          command: meson build-gcc -Dgtest=false
       - run:
-          name: Build g++ version
-          command: ./build.sh
+          name: Build GCC
+          command: |
+            cd build-gcc
+            ninja -j 4
+  "mac":
+    macos:
+      xcode: 13.4.1
+    steps:
+      - checkout
       - run:
-          command: cp build/release/lc0 /tmp/lc0-g++
-      - store_artifacts:
-          path: /tmp/lc0-clang
-          destination: lc0-ubuntu-18-04-clang
+          name: "Pull Submodules"
+          command: |
+            git submodule init
+            git submodule update --remote
+      - run:
+          name: Install build tools
+          command: |
+            pip3 install meson==0.63
+            pip3 install ninja
+            curl -LJOs https://github.com/ispc/ispc/releases/download/v1.21.0/ispc-v1.21.0-macOS.universal.tar.gz
+            tar xf ispc-v1.21.0-macOS.universal.tar.gz
+            cp ispc-v1.21.0-macOS.universal/bin/ispc /usr/local/bin
+      - run:
+          name: Build lc0
+          command: |
+            meson build --buildtype=release -Dgtest=false -Dopencl=false
+            cd build
+            ninja
+      - run:
+          name: Build lc0 arm
+          command: |
+            meson build-arm --buildtype=release -Dgtest=false -Dopencl=false --cross-file cross-files/aarch64-darwin
+            cd build-arm
+            ninja
+      - run:
+          name: Make universal binary
+          command: lipo -create -o /tmp/lc0 build/lc0 build-arm/lc0
       - store_artifacts:
-          path: /tmp/lc0-g++
-          destination: lc0-ubuntu-18-04-g++
+          path: /tmp/lc0
+          destination: lc0-macos_12.3.1
+workflows:
+  version: 2
+  builds:
+    jobs:
+      - build
+      - "mac"

.clang-format

@@ -2,5 +2,5 @@
 Language: Cpp
 BasedOnStyle: Google
 DerivePointerAlignment: false
-...
-
+---
+Language: Proto

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,65 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**WARNING: Please only use GitHub issues for BUG REPORTS and FEATURE REQUESTS**
+Lengthy algorithm discussions etc are fine too, but also consider creating a wiki page or a page on website.
+
+Here is what to do with other types of questions:
+1. Build problems: ask in #help channel in our discord: https://discord.gg/pKujYxD
+2. Configuration questions: ask in #help channel in our discord: https://discord.gg/pKujYxD
+3. Running problems: ask in #help channel in our discord: https://discord.gg/pKujYxD
+
+
+If you are filing a bug report, please fill the fields below.
+Otherwise, feel free to remove this text and type a free-form issue as usual.
+
+BUG REPORT
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**Steps to Reproduce**
+1. 
+2. 
+3. 
+4. 
+Expected behavior:
+Observed behavior:
+
+**Lc0 version**
+Include Lc0 version/operating system/backend type.
+
+**Lc0 parameters**
+Command line, if not default.
+Include screenshot of configuration window, if using through GUI.
+
+**Hardware**
+* Number and model of GPUs that you use.
+* Amount of RAM in the system
+* Other specs (CPU etc) if it may be relevant
+
+**Lc0 logs**
+Please attach Lc0 logs. Here is how to produce them (e.g. for D:\logfile.txt):
+
+Set the following UCI option:
+**Logfile:** D:\\logfile.txt
+OR
+pass this as a command line argument:
+`--logfile=D:\logfile.txt`
+OR
+Create **lc0.config** file in the same directory as your **lc0.exe** is located, with the following contents:
+```
+logfile=D:\logfile.txt
+```
+
+After running Lc0, **D:\logfile.txt** should appear.
+
+
+**Chess GUI logs**
+If there is a problem with particular GUI (cutechess/arena/etc), also attach logs of that program.

.gitignore

@@ -1,10 +1,20 @@
+!subprojects/*.wrap
+*.swp
+.clang_complete
+.DS_Store
+.cache/
+.clangd/
 build/
-testdata/
-LC0VSProj/
+__pycache__/
+compile_commands.json
 CUDA_NN/
-.DS_Store
-xcuserdata
-subprojects/*
-!subprojects/*.wrap
 lc0.xcodeproj/
-*.swp
+LC0VSProj/
+src/.vs/
+subprojects/*
+testdata/
+xcuserdata
+.clang-tidy
+compile_flags.txt
+.vscode
+.mesonpy*

CITATION.cff

@@ -0,0 +1,17 @@
+cff-version: 1.2.0
+title: LeelaChessZero
+type: software
+authors:
+  - name: The LCZero Authors
+repository-code: 'https://github.com/LeelaChessZero/lc0'
+url: 'https://lczero.org/'
+repository-artifact: 'https://github.com/LeelaChessZero/lc0/releases/'
+abstract: >-
+  Lc0 is a UCI-compliant chess engine designed to play chess
+  via neural network, specifically those of the
+  LeelaChessZero project.
+keywords:
+  - chess
+  - neural networks (NN)
+  - artificial intelligence (AI)
+license: GPL-3.0

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 These are the guidelines and standards followed by this codebase.
 
-The language is C++, specifically C++14. As such, manual `new` and `delete` memory mangement is strongly discouraged; use the standard library tools for managing memory (such as `unique_ptr`, `shared_ptr` etc.). When compiler support is more widespread, the project may upgrade to the C++17 standard in the future.
+The language is C++, specifically C++17. As such, manual `new` and `delete` memory mangement is strongly discouraged; use the standard library tools for managing memory (such as `unique_ptr`, `shared_ptr` etc.).
 
 This codebase uses semantic versioning. A release is the final commit for that version number, and all subsequent commits are development for the next version. `master` is the default branch, and the active development branch (as such, all Pull Requests go here); it always targets a minor (or major) version which succeeds the current relase. `release` is always equivalent to the latest tag.
 
@@ -56,21 +56,11 @@ The internal code dependency structure looks like this:
 
 ### Git history
 
-Pull Requests are squahsed when merged. This means all commits in the branch will be squashed into one commit applied onto master, so branches and their PRs should stick to *one* topic only. If you think changes deserve separate commits, make separate PRs for each commit.
+Pull Requests are squashed when merged. This means all commits in the branch will be squashed into one commit applied onto master, so branches and their PRs should stick to *one* topic only. If you think changes deserve separate commits, make separate PRs for each commit.
 
 This also means it's not possible to reuse one branch for multiple PRs; new PRs must either use entirely new branches, or else you could use `git reset --hard` on the current branch.
 
 
-### Command line/UCI options
-
-The options code handles both UCI options and command line options at the same time; in fact they are one and the same. Each option has a "flag name" and a "description". The flag name is used as the command line `--flag-name`. The description serves a dual purpose: it is the text printed by `./lc0 --help`, but it also serves as the *name* of the UCI option as well. Therefore the description should:
-
- * Not end with a period (per the UCI specification)
- * Be clear and succinct, to serve as both a help message and standalone UCI option name
- * Be short (to fit as a UCI option in chess GUIs)
- * Be different from the flag name (since it's a help message)
-
-
 ### Allowed features
 
 Lc0 is still in early stages of development, and has not yet reached the point where we are ready to add small tweaks to add few points of a rating. Large code changes still happen, and having lots of small optimizations adds overhead to larger changes, slowing development.

FLAGS.md

@@ -36,7 +36,7 @@ List of command line flags:
 |------|---------------|-------------|
 | -w PATH,<br>--weights=PATH | Network weights file path | Path to load network weights from.<br>Default is `<autodiscover>`, which makes it search for the latest (by file date) file in ./ and ./weights/ subdirectories which look like weights. |
 | -t NUM,<br>--threads=NUM | Number of worker threads | Number of (CPU) threads to use.<br> Default is `2`. There's currently no use of making it more than 3 as it's limited by mutex contention which is yet to be optimized. |
-| --nncache=SIZE | NNCache size | Number of positions to store in cache.<br>Default: `200000` |
+| --nncache=SIZE | NNCache size | Number of positions to store in cache.<br>Default: `2000000` |
 | <nobr>--backend=BACKEND</nobr><br><nobr>--backend-opts=OPTS</nobr> | NN backend to use<br>NN backend parameters | Configuration of backend parameters. Described in details [here](#backendconfiguration).<br>Default depends on particular build type (cuDNN, tensorflow, etc.). |
 | --slowmover=NUM | Scale thinking time | Parameter value `X` means that the whole remaining time is split in such a way that the current move gets `X × Y` seconds, and next moves will get `1 × Y` seconds. However, due to smart pruning, the engine usually doesn't use all allocated time.<br>Default: `2.2`|
 | <nobr>--move-overhead=NUM</nobr> | Move time overhead in milliseconds | How much overhead should the engine allocate for every move (to counteract things like slow connection, interprocess communication, etc.).<br>Default: `100` ms. |
@@ -52,7 +52,7 @@ List of command line flags:
 | --fpu-reduction=NUM | First Play Urgency reduction | Default: `0.2` |
 | --cache-history-length=NUM | The length of history to include in the cache | Default: `7` |
 | --extra-virtual-loss=NUM | Extra virtual loss | Default: `0` |
-| -l,<br>--debuglog=FILENAME | Do debug logging into a file | Default is off (empty string) |
+| -l,<br>--logfile=FILENAME | Do debug logging into a file | Default is off (empty string) |
 
 
 ## Configuration Files
@@ -65,7 +65,7 @@ List of command line flags:
 # The -- is optional.  The following flags will work as well:
 weights=10445.txt.gz
 syzygy-paths=syzygy
-debuglog=lc0.log
+logfile=lc0.log
 ```
 You can tell `lc0` to ignore the default configuration file by passing `--config=` on the command line.  Command line arguments will override any arguments that also exist in the configuration file.