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Multiprocessing Compilation

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  • #6211


    Quite new to openLB here, and was wondering if there is a
    tutorial on how to compile openLB with openMP.

    I’m able to compile the example tutorial files via the Makefile
    using g++/gcc & cygwin in serial mode, however using PARALLEL_MODE := MPI,
    the compilation is not sucessful, possibly due to the absence of the
    MPIFLAGS component.

    Any tips or suggestions on how to compile it would be appreciated.

    Kind Regards,


    In order to compile in OpenMP mode you only need to set PARALLEL_MODE := OMP in

    For MPI you need to set this variable to MPI (as you did) but also change the compiler to the desired MPI wrapper, e.g. mpic++.

    For usage on Windows we recommend the WSL instead of (frequently problematic) Cygwin.

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