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.. _mpi_comm_accept:
MPI_Comm_accept
===============
.. include_body
:ref:`MPI_Comm_accept` |mdash| Establishes communication with a client.
SYNTAX
------
C Syntax
^^^^^^^^
.. code-block:: C
#include <mpi.h>
int MPI_Comm_accept(const char *port_name, MPI_Info info, int root, MPI_Comm comm, MPI_Comm *newcomm)
Fortran Syntax
^^^^^^^^^^^^^^
.. code-block:: Fortran
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_COMM_ACCEPT(PORT_NAME, INFO, ROOT, COMM, NEWCOMM, IERROR)
CHARACTER*(*) PORT_NAME
INTEGER INFO, ROOT, COMM, NEWCOMM, IERROR
Fortran 2008 Syntax
^^^^^^^^^^^^^^^^^^^
.. code-block:: Fortran
USE mpi_f08
MPI_Comm_accept(port_name, info, root, comm, newcomm, ierror)
CHARACTER(LEN=*), INTENT(IN) :: port_name
TYPE(MPI_Info), INTENT(IN) :: info
INTEGER, INTENT(IN) :: root
TYPE(MPI_Comm), INTENT(IN) :: comm
TYPE(MPI_Comm), INTENT(OUT) :: newcomm
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
INPUT PARAMETERS
----------------
* ``port_name`` : Port name (string, used only on *root*).
* ``info`` : Options given by root for the accept (handle, used only on
root). No options currently supported.
* ``root`` : Rank in *comm* of root node (integer).
* ``comm`` : Intracommunicator over which call is collective (handle).
OUTPUT PARAMETERS
-----------------
* ``newcomm`` : Intercommunicator with client as remote group (handle)
* ``ierror`` : Fortran only: Error status (integer).
DESCRIPTION
-----------
:ref:`MPI_Comm_accept` establishes communication with a client. It is
collective over the calling communicator. It returns an
intercommunicator that allows communication with the client, after the
client has connected with the :ref:`MPI_Comm_accept` function using the
:ref:`MPI_Comm_connect` function. The port_name must have been established
through a call to :ref:`MPI_Open_port` on the root.
ERRORS
------
.. include:: ./ERRORS.rst
.. seealso::
* :ref:`MPI_Comm_connect`
|
