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 an address (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 guarantee 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.
       MPI_ERR_ARG
              - Invalid argument.  Some argument is invalid and is not identified  by  a  specific  error  class
              (e.g., MPI_ERR_RANK ).
       MPI_ERR_INFO
              - Invalid Info
       MPI_ERR_OTHER
              - Other error; use MPI_Error_string to get more information about this error code.

                                                    2/9/2024                                    MPI_Open_port(3)