Open MPI logo

MPI_Attr_delete(3) man page (version 1.4.5)

  |   Home   |   Support   |   FAQ   |  

« Return to documentation listing

Table of Contents


MPI_Attr_delete - Deletes attribute value associated with a key -- use of this routine is deprecated.


C Syntax

#include <mpi.h>
int MPI_Attr_delete(MPI_Comm comm, int keyval)

Fortran Syntax

INCLUDE ’mpif.h’

Input Parameters

Communicator to which attribute is attached (handle).
The key value of the deleted attribute (integer).

Output Parameter

Fortran only: Error status (integer).


This deprecated routine is not available in C++.

Note that use of this routine is deprecated as of MPI-2. Please use MPI_Comm_delete_attr.

Delete attribute from cache by key. This function invokes the attribute delete function delete_fn specified when the keyval was created. The call will fail if the delete_fn function returns an error code other than MPI_SUCCESS.

Whenever a communicator is replicated using the function MPI_Comm_dup, all callback copy functions for attributes that are currently set are invoked (in arbitrary order). Whenever a communicator is deleted using the function MPI_Comm_free, all callback delete functions for attributes that are currently set are invoked.


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.

Table of Contents

« Return to documentation listing