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MPI_Open_port(3)		      MPI		      MPI_Open_port(3)

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

OUTPUT PARAMETER
       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 com-
       municators),  MPI_File_set_errhandler  (for files), and MPI_Win_set_er-
       rhandler	(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	 when-
       ever possible.

       MPI_SUCCESS
	      -	No error; MPI routine completed	successfully.

LOCATION
       src/mpi/spawn/open_port.c

				   9/20/2012		      MPI_Open_port(3)

NAME | SYNOPSIS | INPUT PARAMETER | OUTPUT PARAMETER | NOTES | RESERVED INFO KEY VALUES | THREAD AND INTERRUPT SAFETY | NOTES FOR FORTRAN | ERRORS | LOCATION

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