On Jun 22, 2011, at 11:11 AM, Mª Dolores Villalobos Ortiz wrote:
> Thank you.
>
> I have tried to compile my code using that version of CMakeLists, but it
> doesn't work. My program's output is still wrong.
Whether or not mpiexec launches properly isn't something CMake can control. If
you are getting rank 0 for all your processes when you launch mpiexec, this is
more than likely a problem with your system.
Just out of curiosity, what version of MPI are you using? And does the code
work when you compile it *without* CMake? e.g. if you just run:
mpicxx -o hello hello.cpp
mpiexec -n 2 ./hello
Does that work, or does that do the same thing?
-Todd
> This is completely, utterly wrong!
>
>
> # 2.7 was a development version, so you should either specify
> # 2.6 or 2.8...
> cmake_minim_required(VERSION 2.7)
> project(ITK_MPI)
>
> find_package(MPI REQUIRED)
>
> include_directories(${MPI_INCLUDE_PATH})
>
> add_executable(hello hello.cpp)
> target_link_libraries(hello ${MPI_LIBRARIES})
>
> if(MPI_COMPILE_FLAGS)
> set_target_properties(hello PROPERTIES
> COMPILE_FLAGS "${MPI_COMPILE_FLAGS}")
> endif()
>
> if(MPI_LINK_FLAGS)
> set_target_properties(hello PROPERTIES
> LINK_FLAGS "${MPI_LINK_FLAGS}")
> endif()
>
>
> You should *NEVER* set CMAKE_<LANG>_COMPILER, this completely breaks
> things. Also, with CMake you shouldn't use the compiler wrappers (mpicxx
> etc.), because CMake figures out how to compile MPI programs without it.
>
> HTH
>
> Michael
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______________________________________________________________________
Todd Gamblin, tgamb...@llnl.gov, http://people.llnl.gov/gamblin2
CASC @ Lawrence Livermore National Laboratory, Livermore, CA, USA
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