Provided by: mpich-doc_3.3-3_all bug


       MPI_Type_set_attr -  Stores attribute value associated with a key


       int MPI_Type_set_attr(MPI_Datatype datatype, int type_keyval, void *attribute_val)


              - MPI Datatype to which attribute will be attached (handle)
              - key value, as returned by MPI_Type_create_keyval (integer)
              - attribute value


       The  type  of the attribute value depends on whether C or Fortran is being used.  In C, an
       attribute value is a pointer ( void * ); in Fortran, it is an address-sized integer.

       If an attribute is already present, the delete function (specified when the  corresponding
       keyval was created) will be called.


       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 ) are of type INTEGER in Fortran.


       All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error value;  C  routines  as
       the  value of the function and Fortran routines in the last argument.  Before the value is
       returned, the current MPI error handler is called.  By default, this error handler  aborts
       the  MPI  job.   The  error  handler  may  be  changed  with  MPI_Comm_set_errhandler (for
       communicators), MPI_File_set_errhandler (for files), and MPI_Win_set_errhandler  (for  RMA
       windows).   The  MPI-1  routine  MPI_Errhandler_set may be used but its use is deprecated.
       The predefined error handler MPI_ERRORS_RETURN may be used to cause  error  values  to  be
       returned.   Note  that  MPI  does  not  guarentee that an MPI program can continue past an
       error; however, MPI implementations will attempt to continue whenever possible.

              - No error; MPI routine completed successfully.
              - Invalid datatype argument.  Additionally, this error can occur if an  uncommitted
              MPI_Datatype (see MPI_Type_commit ) is used in a communication call.
              - Invalid keyval

                                            11/21/2018                       MPI_Type_set_attr(3)