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MPI_Type_delete_attr(3) man page (version 5.0.0rc2)

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Name

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

Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument.

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.


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