NAME

       MPI_Open_port - Establishes a network address for a server to accept connections from clients.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Open_port(MPI_Info info, char *port_name)

Fortran Syntax

       USE MPI
       ! or the older form: INCLUDE 'mpif.h'
       MPI_OPEN_PORT(INFO, PORT_NAME, IERROR)
            CHARACTER*(*)  PORT_NAME
            INTEGER        INFO, IERROR

Fortran 2008 Syntax

       USE mpi_f08
       MPI_Open_port(info, port_name, ierror)
            TYPE(MPI_Info), INTENT(IN) :: info
            CHARACTER(LEN=MPI_MAX_PORT_NAME), INTENT(OUT) :: port_name
            INTEGER, OPTIONAL, INTENT(OUT) :: ierror

C++ Syntax

       #include <mpi.h>
       void MPI::Open_port(const MPI::Info& info, char* port_name)

INPUT PARAMETER

       info      Options on how to establish an address (handle). No options currently supported.

OUTPUT PARAMETERS

       port_name Newly established port (string).

       IERROR    Fortran only: Error status (integer).

DESCRIPTION

       MPI_Open_port establishes a network address, encoded in the port_name string, at which the server will be
       able to accept connections from clients. port_name is supplied by the system.

       MPI copies a system-supplied port name into port_name. port_name identifies the newly opened port and can
       be  used by a client to contact the server. The maximum size string that may be supplied by the system is
       MPI_MAX_PORT_NAME.

SUPPORTED INFO KEYS

       None.

ERRORS

       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

       MPI_Comm_accept MPI_Comm_connect

4.1.6                                             Sep 30, 2023                                  MPI_Open_port(3)