NAME

       MPI_Open_port  -   Establish an address that can be used to establish  connections between
       groups of MPI processes

SYNOPSIS

       int MPI_Open_port(MPI_Info info, char *port_name)

INPUT PARAMETERS

       info   -  implementation-specific  information  on   how   to   establish   a   port   for
              MPI_Comm_accept (handle)

OUTPUT PARAMETERS

       port_name
              - newly established port (string)

NOTES

       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 .

RESERVED INFO KEY VALUES

       ip_port
              - Value contains IP port number at which to establish a port.
       ip_address
              -  Value contains IP address at which to establish a port.  If the address is not a
              valid IP address of the host on which the MPI_OPEN_PORT call is made,  the  results
              are undefined.

THREAD AND INTERRUPT SAFETY

       This  routine is thread-safe.  This means that this routine may be safely used by multiple
       threads without the need for any user-provided thread locks.  However, the routine is  not
       interrupt  safe.   Typically, this is due to the use of memory allocation routines such as
       malloc or other non-MPICH runtime routines that are themselves not interrupt-safe.

NOTES FOR FORTRAN

       All MPI routines in Fortran (except for MPI_WTIME  and  MPI_WTICK  )  have  an  additional
       argument  ierr  at  the  end  of  the  argument list.  ierr is an integer and has the same
       meaning as the  return  value  of  the  routine  in  C.   In  Fortran,  MPI  routines  are
       subroutines, and are invoked with the call statement.

       All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in Fortran.

ERRORS

       All  MPI  routines  (except MPI_Wtime and MPI_Wtick ) return an error value; C routines as
       the value of the function and Fortran routines in the last argument.  Before the value  is
       returned,  the current MPI error handler is called.  By default, this error handler aborts
       the MPI  job.   The  error  handler  may  be  changed  with  MPI_Comm_set_errhandler  (for
       communicators),  MPI_File_set_errhandler  (for files), and MPI_Win_set_errhandler (for RMA
       windows).  The MPI-1 routine MPI_Errhandler_set may be used but  its  use  is  deprecated.
       The  predefined  error  handler  MPI_ERRORS_RETURN may be used to cause error values to be
       returned.  Note that MPI does not guarentee that an  MPI  program  can  continue  past  an
       error; however, MPI implementations will attempt to continue whenever possible.

       MPI_SUCCESS
              - No error; MPI routine completed successfully.

                                            11/9/2015                            MPI_Open_port(3)