[Runtime] Pipeline Executor Initial patch.

CMakeLists.txt

@@ -389,6 +389,12 @@ if(GTEST_INCLUDE_DIR AND GTEST_LIB)
   include(GoogleTest)
 endif()
 
+if(USE_PIPELINE_EXECUTOR)
+  message(STATUS "Build with Pipeline Executor support...")
+  file(GLOB RUNTIME_PIPELINE_SRCS src/runtime/pipeline/*.cc)
+  list(APPEND RUNTIME_SRCS ${RUNTIME_PIPELINE_SRCS})
+endif(USE_PIPELINE_EXECUTOR)
+
 # Module rules
 include(cmake/modules/VTA.cmake)
 include(cmake/modules/StandaloneCrt.cmake)

cmake/config.cmake

@@ -105,6 +105,9 @@ set(USE_GRAPH_EXECUTOR ON)
 # Whether enable tiny graph executor with CUDA Graph
 set(USE_GRAPH_EXECUTOR_CUDA_GRAPH OFF)
 
+# Whether enable pipeline executor.
+set(USE_PIPELINE_EXECUTOR OFF)
+
 # Whether to enable the profiler for the graph executor and vm
 set(USE_PROFILER ON)