MPI_Attr_delete - Online Linux Manual PageSection : 3
Updated : Jan 21, 2016
Source : 1.10.2
Note : Open MPI
NAMEMPI_Attr_delete − Deletes attribute value associated with a key -- use of this routine is deprecated.
SYNTAX
C Syntax#include <mpi.h>
int MPI_Attr_delete(MPI_Comm comm, int keyval)
Fortran SyntaxINCLUDE 'mpif.h'
MPI_ATTR_DELETE(COMM, KEYVAL, IERROR)
INTEGER COMM, KEYVAL, IERROR
INPUT PARAMETERScomm Communicator to which attribute is attached (handle). keyval The key value of the deleted attribute (integer).
OUTPUT PARAMETERIERROR Fortran only: Error status (integer).
DESCRIPTIONNote that use of this routine is deprecated as of MPI-2, and was deleted in MPI-3. Please use MPI_Comm_delete_attr. This function does not have a C++ or mpi_f08 binding. 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.
NOTESNote 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.
ERRORSAlmost 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 ALSOMPI_Comm_delete_attr
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