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MPI_Type_delete_attr.3.rst

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MPI_Type_delete_attr

MPI_Type_delete_attr Deletes a datatype-caching attribute value associated with a key.

SYNTAX

C Syntax

#include <mpi.h>

int MPI_Type_delete_attr(MPI_Datatype type, int type_keyval)

Fortran Syntax

USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_TYPE_DELETE_ATTR(TYPE, TYPE_KEYVAL, IERROR)
 INTEGER TYPE, TYPE_KEYVAL, IERROR

Fortran 2008 Syntax

USE mpi_f08
MPI_Type_delete_attr(datatype, type_keyval, ierror)
 TYPE(MPI_Datatype), INTENT(IN) :: datatype
 INTEGER, INTENT(IN) :: type_keyval
 INTEGER, OPTIONAL, INTENT(OUT) :: ierror

INPUT/OUTPUT PARAMETER

  • type: Data type from which the attribute is deleted (handle).n

INPUT PARAMETER

  • type_keyval: Key value (integer).

OUTPUT PARAMETER

  • ierror: Fortran only: Error status (integer).

DESCRIPTION

MPI_Type_delete_attr deletes a datatype-caching attribute value associated with a key. This routines partially replaces MPI_Attr_delete, which is now deprecated.

NOTES

Note that it is not defined by the MPI standard what happens if the delete_fn callback invokes other MPI functions. In Open MPI, it is not valid for delete_fn callbacks (or any of their children) to add or delete attributes on the same object on which the delete_fn callback is being invoked.

ERRORS