Open MPI logo

MPI_Attr_delete(3) man page (version 1.6.4)

  |   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.

See Also


Table of Contents

« Return to documentation listing