Build for Windows

.github/actions/setup/action.yml

@@ -26,6 +26,9 @@ runs:
         sudo rm -rf /usr/share/dotnet
       shell: bash
 
+    - name: Set up Windows developer command prompt
+      uses: ilammy/msvc-dev-cmd@v1
+
     - name: Install CUDA ${{ inputs.cuda-version }}
       if: ${{ inputs.cuda-version != 'cpu' }}
       run: |

.github/workflows/building.yml

@@ -15,7 +15,6 @@ jobs:
         torch-version: [1.12.0, 1.13.0, 2.0.0, 2.1.0, 2.2.0]
         cuda-version: ['cpu', 'cu113', 'cu116', 'cu117', 'cu118', 'cu121']
         exclude:
-          - os: windows-2019  # No windows support yet :(
           - torch-version: 1.12.0
             python-version: '3.12'
           - torch-version: 1.13.0
@@ -112,6 +111,8 @@ jobs:
           source ./.github/workflows/cuda/${{ runner.os }}-env.sh ${{ matrix.cuda-version }}
           python setup.py bdist_wheel --dist-dir=dist
         shell: bash
+        env:
+          TORCH_CUDA_ARCH_LIST: "5.0+PTX;6.0;7.0;7.5;8.0;8.6"
 
       - name: Test wheel
         run: |
@@ -121,6 +122,7 @@ jobs:
           python -c "import pyg_lib; print('pyg-lib:', pyg_lib.__version__)"
           python -c "import pyg_lib; print('CUDA:', pyg_lib.cuda_version())"
           cd ..
+        shell: bash
 
       - name: Configure AWS
         uses: aws-actions/configure-aws-credentials@v1

.github/workflows/cuda/Windows.sh

@@ -1,10 +1,5 @@
 #!/bin/bash
 
-# Install NVIDIA drivers, see:
-# https://github.com/pytorch/vision/blob/master/packaging/windows/internal/cuda_install.bat#L99-L102
-curl -k -L "https://drive.google.com/u/0/uc?id=1injUyo3lnarMgWyRcXqKg4UGnN0ysmuq&export=download" --output "/tmp/gpu_driver_dlls.zip"
-7z x "/tmp/gpu_driver_dlls.zip" -o"/c/Windows/System32"
-
 case ${1} in
   cu121)
     CUDA_SHORT=12.1
@@ -48,3 +43,18 @@ echo "Installing from ${CUDA_FILE}..."
 PowerShell -Command "Start-Process -FilePath \"${CUDA_FILE}\" -ArgumentList \"-s nvcc_${CUDA_SHORT} cuobjdump_${CUDA_SHORT} nvprune_${CUDA_SHORT} cupti_${CUDA_SHORT} cublas_dev_${CUDA_SHORT} cudart_${CUDA_SHORT} cufft_dev_${CUDA_SHORT} curand_dev_${CUDA_SHORT} cusolver_dev_${CUDA_SHORT} cusparse_dev_${CUDA_SHORT} thrust_${CUDA_SHORT} npp_dev_${CUDA_SHORT} nvrtc_dev_${CUDA_SHORT} nvml_dev_${CUDA_SHORT}\" -Wait -NoNewWindow"
 echo "Done!"
 rm -f "${CUDA_FILE}"
+
+# echo Installing NVIDIA drivers...
+# https://github.com/pytorch/vision/blob/master/packaging/windows/internal/cuda_install.bat#L99-L102
+# curl -k -L "https://ossci-windows.s3.us-east-1.amazonaws.com/builder/additional_dlls.zip" --output "/tmp/gpu_driver_dlls.zip"
+# 7z x "/tmp/gpu_driver_dlls.zip" -o"/c/Windows/System32"
+
+echo Installing NvToolsExt...
+curl -k -L https://ossci-windows.s3.us-east-1.amazonaws.com/builder/NvToolsExt.7z --output /tmp/NvToolsExt.7z
+7z x /tmp/NvToolsExt.7z -o"/tmp/NvToolsExt"
+mkdir -p "/c/Program Files/NVIDIA Corporation/NvToolsExt/bin/x64"
+mkdir -p "/c/Program Files/NVIDIA Corporation/NvToolsExt/include"
+mkdir -p "/c/Program Files/NVIDIA Corporation/NvToolsExt/lib/x64"
+cp -r /tmp/NvToolsExt/bin/x64/* "/c/Program Files/NVIDIA Corporation/NvToolsExt/bin/x64"
+cp -r /tmp/NvToolsExt/include/* "/c/Program Files/NVIDIA Corporation/NvToolsExt/include"
+cp -r /tmp/NvToolsExt/lib/x64/* "/c/Program Files/NVIDIA Corporation/NvToolsExt/lib/x64"

.github/workflows/install.yml

@@ -30,6 +30,9 @@ jobs:
         run: |
           source ./.github/workflows/cuda/${{ runner.os }}-env.sh ${{ matrix.cuda-version }}
           pip install --verbose -e .
+        shell: bash
+        env:
+          TORCH_CUDA_ARCH_LIST: "5.0+PTX;6.0;7.0;7.5;8.0;8.6"
 
       - name: Test imports
         run: |

.github/workflows/nightly.yml

@@ -19,7 +19,6 @@ jobs:
         torch-version: [1.12.0, 1.13.0, 2.0.0, 2.1.0, 2.2.0]
         cuda-version: ['cpu', 'cu113', 'cu116', 'cu117', 'cu118', 'cu121']
         exclude:
-          - os: windows-2019  # No windows support yet :(
           - torch-version: 1.12.0
             python-version: '3.12'
           - torch-version: 1.13.0
@@ -118,6 +117,8 @@ jobs:
           source ./.github/workflows/cuda/${{ runner.os }}-env.sh ${{ matrix.cuda-version }}
           python setup.py bdist_wheel --dist-dir=dist
         shell: bash
+        env:
+          TORCH_CUDA_ARCH_LIST: "5.0+PTX;6.0;7.0;7.5;8.0;8.6"
 
       - name: Test wheel
         run: |
@@ -127,6 +128,7 @@ jobs:
           python -c "import pyg_lib; print('pyg-lib:', pyg_lib.__version__)"
           python -c "import pyg_lib; print('CUDA:', pyg_lib.cuda_version())"
           cd ..
+        shell: bash
 
       - name: Configure AWS
         uses: aws-actions/configure-aws-credentials@v1

CHANGELOG.md

@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 ## [0.5.0] - 2023-MM-DD
 ### Added
+- Added Windows support ([#315](https://github.com/pyg-team/pyg-lib/pull/315))
 - Added macOS Apple Silicon support ([#310](https://github.com/pyg-team/pyg-lib/pull/310))
 ### Changed
 ### Removed

CMakeLists.txt

@@ -1,6 +1,8 @@
 cmake_minimum_required(VERSION 3.15)
 project(pyg)
 set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_SHARED_LIBRARY_PREFIX "lib")
 set(PYG_VERSION 0.4.0)
 
 option(BUILD_TEST "Enable testing" OFF)
@@ -71,16 +73,24 @@ else()
   target_include_directories(${PROJECT_NAME} PRIVATE ${PHMAP_DIR})
 endif()
 
-set(METIS_DIR third_party/METIS)
-target_include_directories(${PROJECT_NAME} PRIVATE ${METIS_DIR}/include)
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DIDXTYPEWIDTH=64 -DREALTYPEWIDTH=32")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DIDXTYPEWIDTH=64 -DREALTYPEWIDTH=32")
-set(GKLIB_PATH "${METIS_DIR}/GKlib")
-include(${GKLIB_PATH}/GKlibSystem.cmake)
-include_directories(${GKLIB_PATH})
-include_directories("${METIS_DIR}/include")
-add_subdirectory("${METIS_DIR}/libmetis")
-target_link_libraries(${PROJECT_NAME} PRIVATE metis)
+if (MSVC)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /DIDXTYPEWIDTH=64 /DREALTYPEWIDTH=32")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /DIDXTYPEWIDTH=64 /DREALTYPEWIDTH=32")
+else()
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DIDXTYPEWIDTH=64 -DREALTYPEWIDTH=32")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DIDXTYPEWIDTH=64 -DREALTYPEWIDTH=32")
+endif()
+
+if (NOT MSVC)
+  set(METIS_DIR third_party/METIS)
+  target_include_directories(${PROJECT_NAME} PRIVATE ${METIS_DIR}/include)
+  set(GKLIB_PATH "${METIS_DIR}/GKlib")
+  include(${GKLIB_PATH}/GKlibSystem.cmake)
+  include_directories(${GKLIB_PATH})
+  include_directories("${METIS_DIR}/include")
+  add_subdirectory("${METIS_DIR}/libmetis")
+  target_link_libraries(${PROJECT_NAME} PRIVATE metis)
+endif()
 
 find_package(Torch REQUIRED)
 target_link_libraries(${PROJECT_NAME} PRIVATE ${TORCH_LIBRARIES})
@@ -120,4 +130,6 @@ set_target_properties(${PROJECT_NAME} PROPERTIES
 # Cmake creates *.dylib by default, but python expects *.so by default
 if (APPLE)
   set_property(TARGET ${PROJECT_NAME} PROPERTY SUFFIX .so)
+elseif (MSVC AND USE_PYTHON)
+  set_property(TARGET ${PROJECT_NAME} PROPERTY SUFFIX .pyd)
 endif()

README.md

@@ -37,31 +37,31 @@ The following combinations are supported:
 | PyTorch 2.2  | `cpu` | `cu102` | `cu113` | `cu116` | `cu117` | `cu118` | `cu121` |
 |--------------|-------|---------|---------|---------|---------|---------|---------|
 | **Linux**    | ✅    |         |         |         |         | ✅      | ✅      |
-| **Windows**  |       |         |         |         |         |         |         |
+| **Windows**  | ✅    |         |         |         |         | ✅      | ✅      |
 | **macOS**    | ✅    |         |         |         |         |         |         |
 
 | PyTorch 2.1  | `cpu` | `cu102` | `cu113` | `cu116` | `cu117` | `cu118` | `cu121` |
 |--------------|-------|---------|---------|---------|---------|---------|---------|
 | **Linux**    | ✅    |         |         |         |         | ✅      | ✅      |
-| **Windows**  |       |         |         |         |         |         |         |
+| **Windows**  | ✅    |         |         |         |         | ✅      | ✅      |
 | **macOS**    | ✅    |         |         |         |         |         |         |
 
 | PyTorch 2.0  | `cpu` | `cu102` | `cu113` | `cu116` | `cu117` | `cu118` | `cu121` |
 |--------------|-------|---------|---------|---------|---------|---------|---------|
 | **Linux**    | ✅    |         |         |         | ✅      | ✅      |         |
-| **Windows**  |       |         |         |         |         |         |         |
+| **Windows**  | ✅    |         |         |         | ✅      | ✅      |         |
 | **macOS**    | ✅    |         |         |         |         |         |         |
 
 | PyTorch 1.13 | `cpu` | `cu102` | `cu113` | `cu116` | `cu117` | `cu118` | `cu121` |
 |--------------|-------|---------|---------|---------|---------|---------|---------|
 | **Linux**    | ✅    |         |         | ✅      | ✅      |         |         |
-| **Windows**  |       |         |         |         |         |         |         |
+| **Windows**  | ✅    |         |         | ✅      | ✅      |         |         |
 | **macOS**    | ✅    |         |         |         |         |         |         |
 
 | PyTorch 1.12 | `cpu` | `cu102` | `cu113` | `cu116` | `cu117` | `cu118` | `cu121` |
 |--------------|-------|---------|---------|---------|---------|---------| --------|
 | **Linux**    | ✅    | ✅      | ✅      | ✅      |         |         |         |
-| **Windows**  |       |         |         |         |         |         |         |
+| **Windows**  | ✅    | ✅      | ✅      | ✅      |         |         |         |
 | **macOS**    | ✅    |         |         |         |         |         |         |
 
 ### Form nightly

pyg_lib/csrc/ops/cpu/matmul_kernel.cpp

@@ -86,8 +86,7 @@ void mkl_blas_gemm_batched(const int* m_array,
                            const int* ldc_array,
                            const int group_count,
                            const int* group_size) {
-  TORCH_INTERNAL_ASSERT(false,
-                        "mkl_blas_gemm_batched: MKL BLAS is not supported");
+  TORCH_INTERNAL_ASSERT(false, "MKL BLAS is not supported");
 }
 
 void mkl_blas_gemm_batched(const int* m_array,
@@ -103,8 +102,7 @@ void mkl_blas_gemm_batched(const int* m_array,
                            const int* ldc_array,
                            const int group_count,
                            const int* group_size) {
-  TORCH_INTERNAL_ASSERT(false,
-                        "mkl_blas_gemm_batched: MKL BLAS is not supported");
+  TORCH_INTERNAL_ASSERT(false, "MKL BLAS is not supported");
 }
 
 #endif
@@ -205,6 +203,7 @@ void grouped_matmul_out_kernel_at_impl(const std::vector<at::Tensor> input,
 void grouped_matmul_out_kernel_mkl_impl(const std::vector<at::Tensor> input,
                                         const std::vector<at::Tensor> other,
                                         std::vector<at::Tensor> out) {
+#if WITH_MKL_BLAS()
   // matrix_params<M, N, K>
   using matrix_params = std::tuple<int, int, int>;
   phmap::flat_hash_map<matrix_params, std::vector<size_t>> groups;
@@ -276,6 +275,7 @@ void grouped_matmul_out_kernel_mkl_impl(const std::vector<at::Tensor> input,
                               group_sizes.data());
 #endif
       });
+#endif
 }
 
 std::vector<at::Tensor> grouped_matmul_kernel(const at::TensorList input,
@@ -328,6 +328,7 @@ void segment_matmul_out_kernel_mkl_impl(const at::Tensor& input,
                                         const at::Tensor& other,
                                         at::Tensor& out,
                                         const at::IntArrayRef& sizes) {
+#if WITH_MKL_BLAS()
   const int n = other.size(-1);
   const int k = input.size(-1);
   const int nk = n * k;
@@ -403,6 +404,7 @@ void segment_matmul_out_kernel_mkl_impl(const at::Tensor& input,
                               group_sizes.data());
 #endif
       });
+#endif
 }
 
 at::Tensor segment_matmul_kernel(const at::Tensor& input,

pyg_lib/csrc/partition/cpu/metis_kernel.cpp

@@ -1,7 +1,9 @@
 #include <ATen/ATen.h>
 #include <torch/library.h>
 
+#ifndef _WIN32
 #include <metis.h>
+#endif
 
 namespace pyg {
 namespace partition {
@@ -14,6 +16,9 @@ at::Tensor metis_kernel(const at::Tensor& rowptr,
                         const c10::optional<at::Tensor>& node_weight,
                         const c10::optional<at::Tensor>& edge_weight,
                         bool recursive) {
+#ifdef _WIN32
+  TORCH_INTERNAL_ASSERT(false, "METIS not yet supported on Windows");
+#else
   int64_t nvtxs = rowptr.numel() - 1;
   int64_t ncon = 1;
   auto* xadj = rowptr.data_ptr<int64_t>();
@@ -41,6 +46,7 @@ at::Tensor metis_kernel(const at::Tensor& rowptr,
   }
 
   return part;
+#endif
 }
 
 }  // namespace

setup.py

@@ -1,11 +1,12 @@
 # Environment flags to control different options
 #
-#   USE_MKL_BLAS=1
-#     enables use of MKL BLAS (requires PyTorch to be built with MKL support)
+# - USE_MKL_BLAS=1:
+#   Enables use of MKL BLAS (requires PyTorch to be built with MKL support)
 
 import importlib
 import os
 import os.path as osp
+import re
 import subprocess
 import warnings
 
@@ -19,7 +20,7 @@
 class CMakeExtension(Extension):
     def __init__(self, name, sourcedir=''):
         Extension.__init__(self, name, sources=[])
-        self.sourcedir = os.path.abspath(sourcedir)
+        self.sourcedir = osp.abspath(sourcedir)
 
 
 class CMakeBuild(build_ext):
@@ -40,7 +41,7 @@ def build_extension(self, ext):
 
         import torch
 
-        extdir = os.path.abspath(osp.dirname(self.get_ext_fullpath(ext.name)))
+        extdir = osp.abspath(osp.dirname(self.get_ext_fullpath(ext.name)))
         self.build_type = "DEBUG" if self.debug else "RELEASE"
         if self.debug is None:
             if CMakeBuild.check_env_flag("DEBUG"):
@@ -60,6 +61,7 @@ def build_extension(self, ext):
             '-DUSE_PYTHON=ON',
             f'-DWITH_CUDA={"ON" if WITH_CUDA else "OFF"}',
             f'-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={extdir}',
+            f'-DCMAKE_RUNTIME_OUTPUT_DIRECTORY={extdir}',
             f'-DCMAKE_BUILD_TYPE={self.build_type}',
             f'-DCMAKE_PREFIX_PATH={torch.utils.cmake_prefix_path}',
         ]
@@ -85,26 +87,28 @@ def build_extension(self, ext):
                               cwd=self.build_temp)
 
 
-def maybe_append_with_mkl(dependencies):
-    if CMakeBuild.check_env_flag('USE_MKL_BLAS'):
-        import re
+def mkl_dependencies():
+    if not CMakeBuild.check_env_flag('USE_MKL_BLAS'):
+        return []
 
-        import torch
-        torch_config = torch.__config__.show()
-        with_mkl_blas = 'BLAS_INFO=mkl' in torch_config
-        if torch.backends.mkl.is_available() and with_mkl_blas:
-            product_version = '2023.1.0'
-            pattern = r'oneAPI Math Kernel Library Version [0-9]{4}\.[0-9]+'
-            match = re.search(pattern, torch_config)
-            if match:
-                product_version = match.group(0).split(' ')[-1]
+    import torch
+
+    dependencies = []
+    torch_config = torch.__config__.show()
+    with_mkl_blas = 'BLAS_INFO=mkl' in torch_config
+    if torch.backends.mkl.is_available() and with_mkl_blas:
+        product_version = '2023.1.0'
+        pattern = r'oneAPI Math Kernel Library Version [0-9]{4}\.[0-9]+'
+        match = re.search(pattern, torch_config)
+        if match:
+            product_version = match.group(0).split(' ')[-1]
+        dependencies.append(f'mkl-include=={product_version}')
+        dependencies.append(f'mkl-static=={product_version}')
 
-            dependencies.append(f'mkl-include=={product_version}')
-            dependencies.append(f'mkl-static=={product_version}')
+    return dependencies
 
 
-install_requires = []
-maybe_append_with_mkl(install_requires)
+install_requires = [] + mkl_dependencies()
 
 triton_requires = [
     'triton',