I am one of the maintainers of the MPI wrapper package for Julia <https://github.com/JuliaParallel/MPI.jl>. This package provides Julia language bindings for MPI, essentially wrapping various MPI functions, comparable to what mpi4py <http://pythonhosted.org/mpi4py/> does for Python. It is in Julia straightforward to call C functions in a shared library. The MPI API is standardized, so that part is straightforward. What is not standardized are the values of various constants, such as e.g. MPI_INT, MPI_MAX, or MPI_ANY_TAG. We currently use a cmake function that builds and runs a small executable that outputs the (implementation-specific) values of these constants, and auto-generates Julia code that defines these constants. We do this when the Julia MPI package is installed or updated. This works fine, but I think there could be a better way. The HDF5 library <https://www.hdfgroup.org/HDF5/> puts global constants into the data section of their library, with names derived from the preprocessor constants (with a _g suffix, I believe). This makes it straightforward to access the values of these constants at run time. For example, there exists a constant H5T_NATIVE_INT_g. Could you add similar constants to the OpenMPI shared library? This would simplify wrapping the library. Thanks, -erik -- Erik Schnetter <[email protected]> http://www.perimeterinstitute.ca/personal/eschnetter/ _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss