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Notes on C and Fortran
C and Fortran bindings correspond closely
- mpi.h must be #included
- MPI functions return error codes or MPI_SUCCESS
- mpif.h must be included, or use MPI module (MPI-2)
- All MPI calls are to subroutines, with a place for the return code in the last argument.
C++ bindings, and Fortran-90 issues, are part of MPI-2.