Add basic build files for ATen helpers (#4255)

* Add folder to keep helper classes for PyTorch.

* Add basic build structure.

* Disable ATen support by default.

* Style.

src/ngraph/frontend/ATen/CMakeLists.txt

+# ******************************************************************************
+# Copyright 2017-2020 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ******************************************************************************
+
+# Add files here
+
+if (NGRAPH_ATEN_TEST_ENABLE)
+    add_subdirectory(operators/test)
+endif()

src/ngraph/frontend/ATen/operators/test/CMakeLists.txt

+# ******************************************************************************
+# Copyright 2017-2020 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ******************************************************************************
+
+if(NOT NGRAPH_ATEN_TEST_ENABLE)
+    message(STATUS "ATen tests disabled")
+    return()
+endif()
+
+if(NOT NGRAPH_CPU_ENABLE)
+    message(STATUS "ATen tests needs CPU enabled")
+    return()
+endif()
+
+if(NOT NGRAPH_TEST_UTIL_ENABLE)
+    message(WARNING "ATen test: Turning on test util!")
+    set(NGRAPH_TEST_UTIL_ENABLE ON)
+endif()
+
+message(STATUS "fluid tests enabled")
+
+if(LINUX)
+    set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
+endif()
+
+if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "4.0.0")
+        # gtest has issues with this with v1.8.x
+        # gtest issue is supposed to be addressed after v1.8.x
+        add_compile_options(-Wno-zero-as-null-pointer-constant)
+    endif()
+endif()
+
+set(SRC
+    main.cpp
+    dummy.cpp
+)
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/../../../../../../test)
+
+add_executable(ATen-test ${SRC})
+
+target_include_directories(ATen-test PRIVATE "../../../../../../test")
+
+target_link_libraries(ATen-test PRIVATE ngraph_test_util)
+target_link_libraries(ATen-test PRIVATE ngraph libgtest)
+
+if(NOT WIN32)
+    target_link_libraries(ATen-test PRIVATE pthread)
+endif()
+target_link_libraries(ATen-test PRIVATE ${CMAKE_DL_LIBS})
+
+if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "^(Apple)?Clang$")
+    target_compile_options(fluid-test PRIVATE -Wno-undef -Wno-reserved-id-macro)
+endif()
+
+# So many type_prop tests these days that we need to set /bigobj flag for MSVC.
+# We should probably split up type_prop.cpp.
+if (MSVC)
+    target_compile_options(ATen-test PRIVATE "/bigobj")
+endif()
+
+# The INTERPRETER backend is required for convolution, and backwards unit tests
+target_link_libraries(ATen-test PRIVATE cpu_backend)
+target_link_libraries(ATen-test PRIVATE libmkldnn)
+target_compile_definitions(ATen-test PRIVATE NGRAPH_CPU_ENABLE)
+
+if (NGRAPH_TBB_ENABLE)
+    target_compile_definitions(ATen-test PRIVATE "NGRAPH_TBB_ENABLE")
+endif()

src/ngraph/frontend/ATen/operators/test/dummy.cpp

+//*****************************************************************************
+// Copyright 2017-2020 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//*****************************************************************************
+
+#include <algorithm>
+#include <cinttypes>
+#include <cmath>
+#include <cstdlib>
+#include <random>
+#include <string>
+
+#undef IN_NGRAPH_LIBRARY
+#include "gtest/gtest.h"
+#include "ngraph/ngraph.hpp"
+#include "util/all_close.hpp"
+#include "util/all_close_f.hpp"
+#include "util/ndarray.hpp"
+#include "util/random.hpp"
+#include "util/test_control.hpp"
+#include "util/test_tools.hpp"
+
+static std::mt19937_64 random_generator;
+
+using namespace std;
+using namespace ngraph;
+
+static string s_manifest = "test.manifest";
+
+NGRAPH_TEST(CPU, dummy)
+{
+    ASSERT_TRUE(true);
+}

src/ngraph/frontend/ATen/operators/test/main.cpp

+//*****************************************************************************
+// Copyright 2017-2020 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//*****************************************************************************
+
+#include <chrono>
+#include <iostream>
+
+#undef IN_NGRAPH_LIBRARY
+#include "gtest/gtest.h"
+#include "ngraph/log.hpp"
+#include "ngraph/ngraph.hpp"
+#include "ngraph/runtime/backend.hpp"
+#include "ngraph/runtime/backend_manager.hpp"
+
+using namespace std;
+
+int main(int argc, char** argv)
+{
+    const string cpath_flag{"--cpath"};
+    string cpath;
+    const char* exclude = "--gtest_filter=-benchmark.*";
+    vector<char*> argv_vector;
+    argv_vector.push_back(argv[0]);
+    argv_vector.push_back(const_cast<char*>(exclude));
+    for (int i = 1; i < argc; i++)
+    {
+        argv_vector.push_back(argv[i]);
+    }
+    argc = argv_vector.size();
+    ::testing::InitGoogleTest(&argc, argv_vector.data());
+    for (int i = 1; i < argc; i++)
+    {
+        if (cpath_flag == argv[i] && (++i) < argc)
+        {
+            cpath = argv[i];
+        }
+    }
+    ngraph::runtime::Backend::set_backend_shared_library_search_directory(cpath);
+#ifdef NGRAPH_CPU_ENABLE
+    ngraph_register_cpu_backend();
+#endif
+
+    auto start = std::chrono::system_clock::now();
+    int rc = RUN_ALL_TESTS();
+    auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(
+        std::chrono::system_clock::now() - start);
+    NGRAPH_DEBUG_PRINT("[MAIN] Tests finished: Time: %d ms Exit code: %d", elapsed.count(), rc);
+
+    return rc;
+}

src/ngraph/frontend/ATen/operators/test/test.manifest

+# Add test names to disable
+# This does not work for now

src/ngraph/frontend/CMakeLists.txt

@@ -28,3 +28,14 @@ if (NGRAPH_FLUID_ENABLE)
     message(STATUS "NGRAPH_FLUID_TEST_ENABLE:             ${NGRAPH_FLUID_TEST_ENABLE}")
     add_subdirectory(fluid)
 endif()
+
+option(NGRAPH_ATEN_ENABLE "Enable build for PyTorch ATen support" OFF)
+NORMALIZE_BOOL(NGRAPH_ATEN_ENABLE)
+message(STATUS "NGRAPH_ATEN_ENABLE:                   ${NGRAPH_ATEN_ENABLE}")
+
+if (NGRAPH_ATEN_ENABLE)
+    option(NGRAPH_ATEN_TEST_ENABLE "Enable PaddlePaddle Fluid operator tests" OFF)
+    NORMALIZE_BOOL(NGRAPH_ATEN_TEST_ENABLE)
+    message(STATUS "NGRAPH_ATEN_TEST_ENABLE:              ${NGRAPH_ATEN_TEST_ENABLE}")
+    add_subdirectory(ATen)
+endif()