.github/workflows/build-vulkan.yml

name: CI (vulkan)

on:
  workflow_dispatch: # allows manual triggering
  push:
    branches:
      - master
    paths: [
      '.github/workflows/build-vulkan.yml',
      '**/CMakeLists.txt',
      '**/.cmake',
      '**/*.h',
      '**/*.hpp',
      '**/*.c',
      '**/*.cpp',
      '**/*.comp',
      '**/*.glsl'
    ]

  pull_request:
    types: [opened, synchronize, reopened]
    paths: [
      '.github/workflows/build-vulkan.yml',
      'ggml/src/ggml-vulkan/**'
    ]

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref && github.ref || github.run_id }}
  cancel-in-progress: true

env:
  GGML_NLOOP: 3
  GGML_N_THREADS: 1
  LLAMA_LOG_COLORS: 1
  LLAMA_LOG_PREFIX: 1
  LLAMA_LOG_TIMESTAMPS: 1

jobs:
  ubuntu-24-vulkan-llvmpipe:
    runs-on: ubuntu-24.04

    steps:
      - name: Clone
        id: checkout
        uses: actions/checkout@v6

      - name: ccache
        uses: ggml-org/ccache-action@v1.2.21
        with:
          key: ubuntu-24-vulkan-llvmpipe
          evict-old-files: 1d
          save: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' }}

      - name: Dependencies
        id: depends
        run: |
          sudo add-apt-repository -y ppa:kisak/kisak-mesa
          sudo apt-get update -y
          sudo apt-get install -y build-essential mesa-vulkan-drivers libxcb-xinput0 libxcb-xinerama0 libxcb-cursor-dev libssl-dev

      - name: Get latest Vulkan SDK version
        id: vulkan_sdk_version
        run: |
          echo "VULKAN_SDK_VERSION=$(curl https://vulkan.lunarg.com/sdk/latest/linux.txt)" >> "$GITHUB_ENV"

      - name: Use Vulkan SDK Cache
        uses: actions/cache@v5
        id: cache-sdk
        with:
          path: ./vulkan_sdk
          key: vulkan-sdk-${{ env.VULKAN_SDK_VERSION }}-${{ runner.os }}

      - name: Setup Vulkan SDK
        if: steps.cache-sdk.outputs.cache-hit != 'true'
        uses: ./.github/actions/linux-setup-vulkan-llvmpipe
        with:
          path: ./vulkan_sdk
          version: ${{ env.VULKAN_SDK_VERSION }}

      - name: Build
        id: cmake_build
        run: |
          source ./vulkan_sdk/setup-env.sh
          cmake -B build \
            -DGGML_VULKAN=ON
          cmake --build build --config Release -j $(nproc)

      - name: Test
        id: cmake_test
        run: |
          cd build
          export GGML_VK_VISIBLE_DEVICES=0
          export GGML_VK_DISABLE_F16=1
          export GGML_VK_DISABLE_COOPMAT=1
          # This is using llvmpipe and runs slower than other backends
          ctest -L main --verbose --timeout 4800