chore: use GitHub Actions for CI

.github/workflows/ci.yml

@@ -0,0 +1,82 @@
+name: CI
+
+on: [pull_request, push]
+
+# Cancel a job if there's a new on on the same branch started.
+# Based on https://stackoverflow.com/questions/58895283/stop-already-running-workflow-job-in-github-actions/67223051#67223051
+concurrency:
+  group: ${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  CARGO_INCREMENTAL: 0
+  RUST_BACKTRACE: 1
+  # Faster crates.io index checkout.
+  CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
+  RUST_LOG: debug
+
+jobs:
+  check_clippy:
+    runs-on: ubuntu-24.04
+    name: Clippy
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install required packages
+        run: sudo apt install --no-install-recommends --yes libhwloc-dev nvidia-cuda-toolkit ocl-icd-opencl-dev
+      - name: Run cargo clippy
+        run: cargo clippy --all-targets --workspace -- -D warnings
+
+  check_fmt:
+    runs-on: ubuntu-24.04
+    name: Checking fmt
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run cargo fmt
+        run: cargo fmt --all -- --check
+
+  test_cpu:
+    runs-on: ubuntu-24.04
+    name: Test with CPU
+    strategy:
+      matrix:
+        cargo-args: ['--workspace', '--workspace --no-default-features', '--release -- --ignored']
+    steps:
+      - uses: actions/checkout@v4
+      #- name: Install required packages
+      #  run: sudo apt install --no-install-recommends --yes libhwloc-dev nvidia-cuda-toolkit ocl-icd-opencl-dev
+      - name: Test
+        run: cargo test ${{ matrix.cargo-args }}
+      - name: Show results (only for ignored tests)
+        run: test -f aggregation.csv && cat aggregation.csv || true
+
+  test_gpu:
+    runs-on: ubuntu-24.04
+    name: Test
+    env:
+      # Build the kernel only for the single architecture that is used on CI.
+      # This should reduce the overall compile-time significantly.
+      RUST_GPU_TOOLS_CUDA_NVCC_ARGS: --fatbin --gpu-architecture=sm_75 --generate-code=arch=compute_75,code=sm_75
+    strategy:
+      matrix:
+        include:
+          - name: "Test OpenCL only"
+            cargo-args: "--workspace --release --features opencl"
+            framework: ""
+          - name: "Test CUDA only"
+          - cargo-args: "--release --features cuda"
+            framework: ""
+          - name: "Test CUDA/OpenCL (CUDA at run-time)"
+            cargo-args: "--release --features cuda,opencl"
+            framework: cuda
+          - name: "Test CUDA/OpenCL (OpenCL at run-time)"
+            cargo-args: "--release --features cuda,opencl"
+            framework: cuda
+          - name: "Test SupraSeal"
+            cargo-args: "--release --features cuda-supraseal"
+            framework: ""
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install required packages
+        run: sudo apt install --no-install-recommends --yes libhwloc-dev nvidia-cuda-toolkit ocl-icd-opencl-dev
+      - name: Test ${{ matrix.framework }} with ${{ matrix.cargo-args }}
+        run: BELLMAN_GPU_FRAMEWORK=${{ matrix.framework }} cargo test ${{ matrix.cargo-args }}