add cppcast example

Author: archibate

CMakeLists.txt

@@ -11,6 +11,7 @@ else()
         add_compile_options(-finput-charset=utf-8 -fexec-charset=utf-8)
     endif()
     add_compile_options(-Wall -Wextra -Werror=return-type)
+add_compile_options(-Wno-unused)
 endif()
 
 

cudaguide/6_parallelreduce/CMakeLists.txt

@@ -0,0 +1,35 @@
+cmake_minimum_required(VERSION 3.12)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CUDA_STANDARD 17)
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_CUDA_EXTENSIONS OFF)
+set(CMAKE_CUDA_SEPARABLE_COMPILATION OFF)
+set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} -isystem . --expt-relaxed-constexpr --expt-extended-lambda")
+
+if (NOT DEFINED CMAKE_CUDA_ARCHITECTURES)
+    # try to set CMAKE_CUDA_ARCHITECTURES to native card version
+    if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.24)
+        set(CMAKE_CUDA_ARCHITECTURES native)
+    else()
+        message(STATUS "Running __nvcc_device_query for CMAKE_CUDA_ARCHITECTURES")
+        execute_process(COMMAND "__nvcc_device_query"
+            RESULT_VARIABLE NVCC_DEVICE_QUERY_RESULT
+            OUTPUT_VARIABLE CMAKE_CUDA_ARCHITECTURES
+            OUTPUT_STRIP_TRAILING_WHITESPACE)
+        if (NVCC_DEVICE_QUERY_RESULT EQUAL 0)
+            message(STATUS "CMAKE_CUDA_ARCHITECTURES set to ${CMAKE_CUDA_ARCHITECTURES}")
+        else()
+            message(WARNING "CMAKE_CUDA_ARCHITECTURES not defined and __nvcc_device_query failed.")
+            unset(CMAKE_CUDA_ARCHITECTURES)
+        endif()
+    endif()
+endif()
+
+project(cuda_reduce LANGUAGES CXX CUDA)
+
+file(GLOB sources "*.cpp" "*.cu")
+add_executable(${PROJECT_NAME} ${sources})
+target_link_libraries(${PROJECT_NAME} PRIVATE cusparse cublas)
+find_package(fmt REQUIRED)
+target_link_libraries(${PROJECT_NAME} PRIVATE fmt::fmt)