[DistDGL] remove tensorpipe from third_party and no build (#5876)

.gitmodules

@@ -19,9 +19,6 @@
 [submodule "third_party/libxsmm"]
 	path = third_party/libxsmm
 	url = https://github.com/hfp/libxsmm.git
-[submodule "third_party/tensorpipe"]
-	path = third_party/tensorpipe
-	url = https://github.com/pytorch/tensorpipe
 [submodule "third_party/thrust"]
 	path = third_party/thrust
 	url = https://github.com/NVIDIA/thrust.git

CMakeLists.txt

@@ -31,7 +31,6 @@ dgl_option(USE_S3 "Build with S3 support" OFF)
 dgl_option(USE_HDFS "Build with HDFS support" OFF) # Set env HADOOP_HDFS_HOME if needed
 dgl_option(REBUILD_LIBXSMM "Clean LIBXSMM build cache at every build" OFF) # Set env HADOOP_HDFS_HOME if needed
 dgl_option(USE_EPOLL "Build with epoll for socket communicator" ON)
-dgl_option(TP_BUILD_LIBUV "Build libuv together with tensorpipe (only impacts Linux)" ON)
 dgl_option(BUILD_TORCH "Build the PyTorch plugin" OFF)
 dgl_option(BUILD_SPARSE "Build DGL sparse library" ON)
 dgl_option(BUILD_GRAPHBOLT "Build Graphbolt library" OFF)
@@ -85,8 +84,6 @@ if(MSVC)
   endif()
 else(MSVC)
   include(CheckCXXCompilerFlag)
-  # tensorpipe's dependencies require C++14
-  check_cxx_compiler_flag("-std=c++14"    SUPPORT_CXX14)
   set(CMAKE_C_FLAGS "-O2 -Wall -fPIC ${CMAKE_C_FLAGS}")
   set(CMAKE_CXX_FLAGS "-O2 -Wall -fPIC -std=c++14 ${CMAKE_CXX_FLAGS}")
   if(NOT APPLE)
@@ -223,33 +220,11 @@ if((NOT MSVC) AND USE_LIBXSMM)
   list(APPEND DGL_LINKER_LIBS -L${CMAKE_SOURCE_DIR}/third_party/libxsmm/lib/ xsmm.a)
 endif((NOT MSVC) AND USE_LIBXSMM)
 
-if(NOT MSVC)
-  # Only build tensorpipe on linux
-  string(REPLACE "-pedantic" "" CMAKE_C_FLAGS ${CMAKE_C_FLAGS})
-  # Disable -Wall for third-party tensorpipe due to too many warnings
-  string(REPLACE "-Wall" "" CMAKE_C_FLAGS ${CMAKE_C_FLAGS})
-  string(REPLACE "-Wall" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
-  set(WNOERROR_FLAGS "-Wno-error=sign-compare")
-  if (CMAKE_COMPILER_IS_GNUCC AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 12.0)
-      set(WNOERROR_FLAGS "${WNOERROR_FLAGS} -Wno-error=dangling-pointer")
-  endif()
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WNOERROR_FLAGS}")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WNOERROR_FLAGS}")
-  set(TP_STATIC_OR_SHARED STATIC)
-  add_subdirectory(third_party/tensorpipe)
-  list(APPEND DGL_LINKER_LIBS tensorpipe)
-  target_include_directories(dgl PRIVATE third_party/tensorpipe)
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
-  string(REPLACE "${WNOERROR_FLAGS}" "" CMAKE_C_FLAGS ${CMAKE_C_FLAGS})
-  string(REPLACE "${WNOERROR_FLAGS}" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
-
-  # Avoid exposing third-party symbols when using DGL as a library.
-  if (NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wl,--exclude-libs,ALL")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,--exclude-libs,ALL")
-  endif()
-endif(NOT MSVC)
+# Avoid exposing third-party symbols when using DGL as a library.
+if((NOT MSVC) AND (NOT ${CMAKE_SYSTEM_NAME} MATCHES "Darwin"))
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wl,--exclude-libs,ALL")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,--exclude-libs,ALL")
+endif()
 
 # support PARALLEL_ALGORITHMS
 if (LIBCXX_ENABLE_PARALLEL_ALGORITHMS)

src/rpc/net_type.h

@@ -22,7 +22,7 @@ struct RPCBase {
   virtual void Finalize() = 0;
 
   /**
-   * @brief Communicator type: 'socket', 'tensorpipe', etc
+   * @brief Communicator type such as 'socket'.
    */
   virtual const std::string &NetType() const = 0;
 };

tensorpipe @ 6042f1a4

-Subproject commit 6042f1a4cbce8eef997f11ed0012de137b317361