ci: Add Windows Vulkan backend testing on Intel (#21292)

* experimenting CI

* Experimenting CI fix for MinGW

* experimenting CI on Windows

* modified script for integration with VisualStudio

* added proxy handling

* adding python version for Windows execution

* fix iterator::end() dereference

* fixed proxy handling

* Fix errors occurring on Windows

* fixed ci script

* Reverted to master

* Stripping test items to simplify Windows test

* adjusting script for windows testing

* Changed shell

* Fixed shell

* Fixed shell

* Fix CI setting

* Fix CI setting

* Fix CI setting

* Experimenting ci fix

* Experimenting ci fix

* Experimenting ci fix

* Experimenting ci fix

* experimenting fix for unit test error

* Changed to use BUILD_LOW_PERF to skip python tests

* Fix CI

* Added option to specify Ninja generator

* Reverted proxy related changes

.github/workflows/build-self-hosted.yml

@@ -213,6 +213,27 @@ jobs:
           vulkaninfo --summary
           GG_BUILD_VULKAN=1 bash ./ci/run.sh ~/results/llama.cpp ~/mnt/llama.cpp
 
+  ggml-ci-win-intel-vulkan:
+    runs-on: [self-hosted, Windows, X64, Intel]
+
+    steps:
+      - name: Clone
+        id: checkout
+        uses: actions/checkout@v6
+
+      - name: Test
+        id: ggml-ci
+        shell: C:\msys64\usr\bin\bash.exe --noprofile --norc -eo pipefail "{0}"
+        env:
+          MSYSTEM: UCRT64
+          CHERE_INVOKING: 1
+          PATH: C:\msys64\ucrt64\bin;C:\msys64\usr\bin;C:\Windows\System32;${{ env.PATH }}
+        run: |
+          vulkaninfo --summary
+          # Skip python related tests with GG_BUILD_LOW_PERF=1 since Windows MSYS2 UCRT64 currently fails to create
+          # a valid python environment for testing
+          LLAMA_FATAL_WARNINGS=OFF GG_BUILD_NINJA=1 GG_BUILD_VULKAN=1 GG_BUILD_LOW_PERF=1 ./ci/run.sh ./results/llama.cpp ./mnt/llama.cpp
+
   ggml-ci-intel-openvino-gpu-low-perf:
     runs-on: [self-hosted, Linux, Intel, OpenVINO]
 

ci/run.sh

@@ -119,6 +119,11 @@ if [ ! -z ${GG_BUILD_VULKAN} ]; then
         CMAKE_EXTRA="${CMAKE_EXTRA} -DGGML_METAL=OFF -DGGML_BLAS=OFF"
     fi
 
+    # Build shared libs on Windows
+    # to reduce binary size and avoid errors in library loading unit tests
+    if uname -s | grep -qi nt; then
+        CMAKE_EXTRA="${CMAKE_EXTRA} -DBUILD_SHARED_LIBS=ON"
+    fi
 fi
 
 if [ ! -z ${GG_BUILD_WEBGPU} ]; then