MPI_Type_set_attr
Stores attribute value associated with a key
Synopsis
int MPI_Type_set_attr(MPI_Datatype type, int type_keyval, void *attribute_val)
Input Parameters
- type
- MPI Datatype to which attribute will be attached (handle)
- keyval
- key value, as returned by MPI_Type_create_keyval (integer)
- attribute_val
- attribute value
Notes
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.
Notes for Fortran
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.
Errors
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.
- MPI_SUCCESS
- No error; MPI routine completed successfully.
- MPI_ERR_TYPE
- Invalid datatype argument. May be an uncommitted
MPI_Datatype (see MPI_Type_commit).
- MPI_ERR_KEYVAL
- Invalid keyval
Location:type_set_attr.c