implement lc0 neural network inference

.github/workflows/ci.yml

@@ -80,6 +80,9 @@ jobs:
           echo ""
           echo "Available Metal devices:"
           system_profiler SPDisplaysDataType | grep -A 5 "Metal" || echo "Metal info not available in CI"
+          echo ""
+          echo "Installing dependencies..."
+          brew install protobuf zlib abseil
 
       - name: Setup environment (Ubuntu)
         if: runner.os == 'Linux'
@@ -99,6 +102,10 @@ jobs:
           else
             echo "No NVIDIA GPU detected (nvidia-smi not found)"
           fi
+          echo ""
+          echo "Installing dependencies..."
+          sudo apt-get update
+          sudo apt-get install -y libprotobuf-dev protobuf-compiler zlib1g-dev
         shell: bash
 
       - name: Setup environment (Windows)
@@ -118,11 +125,23 @@ jobs:
           }
         shell: pwsh
 
+      - name: Install dependencies (Windows)
+        if: runner.os == 'Windows'
+        run: |
+          # Install vcpkg and protobuf
+          git clone https://github.com/Microsoft/vcpkg.git C:\vcpkg
+          C:\vcpkg\bootstrap-vcpkg.bat
+          C:\vcpkg\vcpkg install protobuf:x64-windows zlib:x64-windows
+          echo "CMAKE_TOOLCHAIN_FILE=C:\vcpkg\scripts\buildsystems\vcpkg.cmake" >> $env:GITHUB_ENV
+        shell: pwsh
+
       - name: Download NNUE files
         run: |
-          mkdir -p src
-          cd src
+          mkdir -p networks
+          cd networks
+          # NNUE weight files (hosted externally)
           curl -L --retry 3 --retry-delay 2 -O https://tests.stockfishchess.org/api/nn/nn-c288c895ea92.nnue
+          # NNUE weight files (hosted externally)
           curl -L --retry 3 --retry-delay 2 -O https://tests.stockfishchess.org/api/nn/nn-37f18f62d772.nnue
           ls -la
         shell: bash
@@ -135,7 +154,8 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-${{ matrix.os }}-cmake-
 
-      - name: Configure CMake
+      - name: Configure CMake (Unix)
+        if: runner.os != 'Windows'
         run: |
           cmake -S . -B build \
             -DCMAKE_BUILD_TYPE=${{ env.BUILD_TYPE }} \
@@ -144,6 +164,17 @@ jobs:
             -DBUILD_TESTS=ON
         shell: bash
 
+      - name: Configure CMake (Windows)
+        if: runner.os == 'Windows'
+        run: |
+          cmake -S . -B build `
+            -DCMAKE_BUILD_TYPE=${{ env.BUILD_TYPE }} `
+            -DUSE_METAL=${{ matrix.use_metal }} `
+            -DUSE_CUDA=${{ matrix.use_cuda }} `
+            -DBUILD_TESTS=ON `
+            -DCMAKE_TOOLCHAIN_FILE=C:\vcpkg\scripts\buildsystems\vcpkg.cmake
+        shell: pwsh
+
       - name: Build (Unix)
         if: runner.os != 'Windows'
         run: |
@@ -159,14 +190,14 @@ jobs:
         if: runner.os == 'Windows'
         shell: bash
         run: |
-          cp src/*.nnue build/${{ env.BUILD_TYPE }}/ 2>/dev/null || true
+          cp networks/*.nnue build/${{ env.BUILD_TYPE }}/ 2>/dev/null || true
           ls -la build/${{ env.BUILD_TYPE }}/
 
       - name: Copy NNUE files into build output (Unix)
         if: runner.os != 'Windows'
         shell: bash
         run: |
-          cp src/*.nnue build/ 2>/dev/null || true
+          cp networks/*.nnue build/ 2>/dev/null || true
           ls -la build/
 
       - name: Run C++ Tests (Unix)
@@ -246,11 +277,19 @@ jobs:
           nvcc --version
         shell: bash
 
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libprotobuf-dev protobuf-compiler zlib1g-dev
+        shell: bash
+
       - name: Download NNUE files
         run: |
-          mkdir -p src
-          cd src
+          mkdir -p networks
+          cd networks
+          # NNUE weight files (hosted externally)
           curl -L --retry 3 --retry-delay 2 -O https://tests.stockfishchess.org/api/nn/nn-c288c895ea92.nnue
+          # NNUE weight files (hosted externally)
           curl -L --retry 3 --retry-delay 2 -O https://tests.stockfishchess.org/api/nn/nn-37f18f62d772.nnue
           ls -la
         shell: bash
@@ -271,7 +310,7 @@ jobs:
 
       - name: Copy NNUE files into build output
         run: |
-          cp src/*.nnue build/ 2>/dev/null || true
+          cp networks/*.nnue build/ 2>/dev/null || true
           ls -la build/
         shell: bash
 
@@ -354,11 +393,17 @@ jobs:
         with:
           submodules: recursive
 
+      - name: Install dependencies
+        run: brew install protobuf zlib abseil
+        shell: bash
+
       - name: Download NNUE files
         run: |
-          mkdir -p src
-          cd src
+          mkdir -p networks
+          cd networks
+          # NNUE weight files (hosted externally)
           curl -L --retry 3 --retry-delay 2 -O https://tests.stockfishchess.org/api/nn/nn-c288c895ea92.nnue
+          # NNUE weight files (hosted externally)
           curl -L --retry 3 --retry-delay 2 -O https://tests.stockfishchess.org/api/nn/nn-37f18f62d772.nnue
         shell: bash
 
@@ -412,11 +457,19 @@ jobs:
           method: "network"
           sub-packages: '["nvcc", "cudart", "cudart-dev"]'
 
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libprotobuf-dev protobuf-compiler zlib1g-dev
+        shell: bash
+
       - name: Download NNUE files
         run: |
-          mkdir -p src
-          cd src
+          mkdir -p networks
+          cd networks
+          # NNUE weight files (hosted externally)
           curl -L --retry 3 --retry-delay 2 -O https://tests.stockfishchess.org/api/nn/nn-c288c895ea92.nnue
+          # NNUE weight files (hosted externally)
           curl -L --retry 3 --retry-delay 2 -O https://tests.stockfishchess.org/api/nn/nn-37f18f62d772.nnue
         shell: bash
 

.github/workflows/elo-tournament.yml

@@ -1,11 +1,12 @@
 name: Elo Tournament
 
 on:
-  pull_request:
-    branches: [main]
-    types: [opened, synchronize, reopened]
-  workflow_dispatch: # Allow manual trigger
+  workflow_dispatch: # Manual trigger only
     inputs:
+      pr_number:
+        description: "PR number to run tournament on (leave empty for current branch)"
+        required: false
+        default: ""
       games_per_match:
         description: "Number of games per match (should be even for color swap)"
         required: false
@@ -15,9 +16,9 @@ on:
         required: false
         default: "600+0.1"
 
-# Cancel in-progress runs for the same PR when a new push occurs
+# Cancel in-progress runs when a new run is triggered
 concurrency:
-  group: elo-tournament-${{ github.event.pull_request.number || github.run_id }}
+  group: elo-tournament-${{ github.event.inputs.pr_number || github.run_id }}
   cancel-in-progress: true
 
 env:
@@ -43,7 +44,7 @@ jobs:
 
       - name: Install build dependencies
         run: |
-          brew install cmake ninja meson qt@6 coreutils
+          brew install cmake ninja meson qt@6 coreutils protobuf zlib abseil
           pip3 install meson ninja chess
           # coreutils provides gtimeout which we alias to timeout
           echo "alias timeout=gtimeout" >> ~/.bashrc
@@ -942,20 +943,20 @@ jobs:
           cat results/pr_comment.md
 
       - name: Find existing comment
-        if: github.event_name == 'pull_request'
+        if: github.event.inputs.pr_number != ''
         uses: peter-evans/find-comment@v3
         id: find-comment
         with:
-          issue-number: ${{ github.event.pull_request.number }}
+          issue-number: ${{ github.event.inputs.pr_number }}
           comment-author: "github-actions[bot]"
           body-includes: "🏆 MetalFish Elo Tournament Results"
 
       - name: Post or update PR comment
-        if: github.event_name == 'pull_request'
+        if: github.event.inputs.pr_number != ''
         uses: peter-evans/create-or-update-comment@v4
         with:
           comment-id: ${{ steps.find-comment.outputs.comment-id }}
-          issue-number: ${{ github.event.pull_request.number }}
+          issue-number: ${{ github.event.inputs.pr_number }}
           body-path: ${{ steps.aggregate.outputs.comment_file }}
           edit-mode: replace
 

.gitignore

@@ -391,4 +391,6 @@ TSWLatexianTemp*
 #*Notes.bib
 *.pyc
 .DS_Store
+_codeql_build_dir/
+_codeql_detected_source_root
 networks/BT4-1024x15x32h-swa-6147500.pb

.gitmodules

@@ -0,0 +1,4 @@
+[submodule "lc0_ref"]
+	path = lc0_ref
+	url = https://github.com/LeelaChessZero/lc0
+	branch = master