Babelstream benchmark activation and refactoring

Co-authored-by: René Widera <r.widera@hzdr.de>
Co-authored-by: Simeon Ehrig <s.ehrig@hzdr.de>

CMakeLists.txt

@@ -47,8 +47,9 @@ endif()
 option(alpaka_INSTALL_TEST_HEADER "Install headers of the namespace alpaka::test. Attention, headers are not designed for production code, see documentation." OFF)
 
 include(CMakeDependentOption)
+
 cmake_dependent_option(alpaka_CHECK_HEADERS "Check all alpaka headers as part of the tests whether they can be compiled standalone." OFF BUILD_TESTING OFF)
-cmake_dependent_option(alpaka_USE_INTERNAL_CATCH2 "Use internally shipped Catch2" ON BUILD_TESTING OFF)
+cmake_dependent_option(alpaka_USE_INTERNAL_CATCH2 "Use internally shipped Catch2" ON "BUILD_TESTING OR alpaka_BUILD_BENCHMARKS" OFF)
 
 ################################################################################
 # Internal variables.

benchmarks/CMakeLists.txt

@@ -15,4 +15,9 @@ project("alpakaBenchmarks" LANGUAGES CXX)
 # Add subdirectories.
 ################################################################################
 
+if(NOT BUILD_TESTING)
+    # Testing is not enabled therefore CATCH2 which is part of common must be pulled.
+    add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/../test/common "${CMAKE_BINARY_DIR}/test/common")
+endif()
+
 add_subdirectory("babelstream/")

benchmarks/babelstream/CMakeLists.txt

@@ -19,9 +19,31 @@ if(NOT TARGET alpaka::alpaka)
     endif()
 endif()
 
-alpaka_add_executable(${PROJECT_NAME} src/main.cpp src/Stream.h src/AlpakaStream.cpp src/AlpakaStream.h)
-target_compile_definitions(${PROJECT_NAME} PUBLIC ALPAKA)
-target_link_libraries(${PROJECT_NAME} PUBLIC alpaka::alpaka)
-set_target_properties(${PROJECT_NAME} PROPERTIES FOLDER benchmarks)
 
-# add_test(NAME ${_TARGET_NAME} COMMAND ${_TARGET_NAME})
+set(_TARGET_NAME "babelstream")
+append_recursive_files_add_to_src_group("src/" "src/" "cpp" _FILES_SOURCE)
+
+alpaka_add_executable(
+    ${_TARGET_NAME}
+    ${_FILES_SOURCE})
+
+target_include_directories(
+ ${_TARGET_NAME}
+ PRIVATE "src")
+
+target_link_libraries(
+    ${_TARGET_NAME}
+    PRIVATE common)
+
+set_target_properties(${_TARGET_NAME} PROPERTIES FOLDER benchmarks/babelstream)
+
+#Run as a ctest
+if(alpaka_CI)
+    # Only run for release builds since this is a benchmark
+    if(CMAKE_BUILD_TYPE STREQUAL "Release")
+       add_test(NAME ${_TARGET_NAME} COMMAND ${_TARGET_NAME})
+    endif()
+else()
+    # For a normal benchmark test, number of samples should be equal to the default value.
+    add_test(NAME ${_TARGET_NAME} COMMAND ${_TARGET_NAME})
+endif()