17.2.271. MPI_Open_port

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

17.2.271.1. SYNTAX

17.2.271.1.1. C Syntax

#include <mpi.h>

int MPI_Open_port(MPI_Info info, char *port_name)

17.2.271.1.2. Fortran Syntax

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

17.2.271.1.3. 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

17.2.271.2. INPUT PARAMETER

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

17.2.271.3. OUTPUT PARAMETERS

  • port_name: Newly established port (string).

  • IERROR: Fortran only: Error status (integer).

17.2.271.4. 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.

17.2.271.5. SUPPORTED INFO KEYS

None.

17.2.271.6. ERRORS

Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument.

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.