NAME

       MPI_Type_set_attr - Sets a key value/attribute pair to a data type.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Type_set_attr(MPI_Datatype type, int type_keyval,
            void *attribute_val)

Fortran Syntax (see FORTRAN 77 NOTES)

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_TYPE_SET_ATTR(TYPE, TYPE_KEYVAL, ATTRIBUTE_VAL, IERROR)
            INTEGER   TYPE, TYPE_KEYVAL, IERROR
            INTEGER(KIND=MPI_ADDRESS_KIND) ATTRIBUTE_VAL

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Type_set_attr(datatype, type_keyval, attribute_val, ierror)
            TYPE(MPI_Datatype), INTENT(IN) :: datatype
            INTEGER, INTENT(IN) :: type_keyval
            INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(IN) :: attribute_val
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

C++ Syntax

       #include <mpi.h>
       void MPI::Datatype::Set_attr(int type_keyval, const void* attribute_val)

INPUT/OUTPUT PARAMETER

       type      Data type to which attribute will be attached (handle).

INPUT PARAMETERS

       type_keyval
                 Key value (integer).

       attribute_val
                 Attribute value.

OUTPUT PARAMETER

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       For the given data type, MPI_Type_set_attr sets the key value to the value of the specified attribute.

FORTRAN 77 NOTES

       The  MPI  standard prescribes portable Fortran syntax for the ATTRIBUTE_VAL argument only for Fortran 90.
       FORTRAN 77 users may use the non-portable syntax

            INTEGER*MPI_ADDRESS_KIND ATTRIBUTE_VAL

       where MPI_ADDRESS_KIND is a constant defined in mpif.h and gives the length of the  declared  integer  in
       bytes.

ERRORS

       Almost  all  MPI  routines  return  an  error  value; C routines as the value of the function and Fortran
       routines in the last argument. C++ functions do not return errors. If the default error handler is set to
       MPI::ERRORS_THROW_EXCEPTIONS, then on error the  C++  exception  mechanism  will  be  used  to  throw  an
       MPI::Exception object.

       Before  the  error  value  is  returned,  the current MPI error handler is called. By default, this error
       handler aborts the MPI job, except for I/O function  errors.  The  error  handler  may  be  changed  with
       MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values
       to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.

SEE ALSO

       MPI_Type_get_attr

4.1.6                                             Sep 30, 2023                              MPI_Type_set_attr(3)