MPI_File_iwrite - Nonblocking write using individual file pointer

fh     - file handle (handle)
       buf    - initial address of buffer (choice)
       count  - number of elements in buffer (nonnegative integer)
       datatype
              - datatype of each buffer element (handle)

       MPI_File_iwrite -  Nonblocking write using individual file pointer

       All  MPI  routines in Fortran (except for 'MPI_WTIME' and 'MPI_WTICK') have an additional argument 'ierr'
       at the end of the argument list.  'ierr' is an integer and has the same meaning as the  return  value  of
       the routine in C.  In Fortran, MPI routines are subroutines and are invoked with the 'call' statement.

       All MPI objects (e.g., 'MPI_Datatype', 'MPI_Comm', 'MPI_File') are of type 'INTEGER' in Fortran.

                                                    8/31/1998                                 MPI_File_iwrite(3)

request
              - request object (handle)

       #include "mpi.h"
       int MPI_File_iwrite(MPI_File fh, void *buf, int count,
                           MPI_Datatype datatype, MPIO_Request *request)