OpenMP¶

The OpenMP API specification for parallel programming, an Application Program Interface (API) that may be used to explicitly direct multi-threaded, shared memory parallelism.

OpenMP有两种常用的并行开发形式: 一是通过简单的 fork/join 对串行程序并行化，二是采用 单程序多数据 对串行程序并行化。

CMakeLists.txt

find_package(OpenMP)
if (OPENMP_FOUND)
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
    set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${OpenMP_EXE_LINKER_FLAGS}")
endif()