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.. _mpi_attr_get:
MPI_Attr_get
============
.. include_body
:ref:`MPI_Attr_get` |mdash| Retrieves attribute value by key |mdash| |deprecated_favor| :ref:`MPI_Comm_get_attr`.
SYNTAX
------
C Syntax
^^^^^^^^
.. code-block:: c
#include <mpi.h>
int MPI_Attr_get(MPI_Comm comm, int keyval,void *attribute_val,
int *flag )
Fortran Syntax
^^^^^^^^^^^^^^
.. code-block:: fortran
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_ATTR_GET(COMM, KEYVAL, ATTRIBUTE_VAL, FLAG, IERROR)
INTEGER COMM, KEYVAL, ATTRIBUTE_VAL, IERROR
LOGICAL FLAG
INPUT PARAMETERS
----------------
* ``comm``: Communicator to which attribute is attached (handle).
* ``keyval``: Key value (integer).
OUTPUT PARAMETERS
-----------------
* ``attribute_val``: Attribute value, unless flag = false.
* ``flag``: True if an attribute value was extracted; false if no attribute is associated with the key.
* ``ierror``: Fortran only: Error status (integer).
DESCRIPTION
-----------
Note that use of this routine is *deprecated* as of MPI-2, and was
*deleted* in MPI-3. Please use :ref:`MPI_Comm_get_attr`. This function does not
have a mpi_f08 binding.
ERRORS
------
.. include:: ./ERRORS.rst
.. seealso::
* :ref:`MPI_Comm_get_attr`
|
