MPI_Comm_accept(3OpenMPI)          Open MPI          MPI_Comm_accept(3OpenMPI)



NAME
       MPI_Comm_accept  - Establishes communication with a client.


SYNTAX
C Syntax
       #include <mpi.h>
       int MPI_Comm_accept(char *port_name, MPI_Info info, int root, MPI_Comm comm, MPI_Comm *newcomm)


Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_COMM_ACCEPT(PORT_NAME, INFO, ROOT, COMM, NEWCOMM, IERROR)
            CHARACTER*(*)  PORT_NAME
            INTEGER        INFO, ROOT, COMM, NEWCOMM, IERROR


C++ Syntax
       #include <mpi.h>
       MPI::Intercomm MPI::Intracomm::Accept(const char* port_name,
            const MPI::Info& info, int root) const


INPUT PARAMETERS
       port_name Port name (string, used only on root).

       info      Options given by root for the accept (handle, used only on
                 root). No options currently supported.

       root      Rank in comm of root node (integer).

       comm      Intracommunicator over which call is collective (handle).


OUTPUT PARAMETERS
       newcomm   Intercommunicator with client as remote group (handle)

       IERROR    Fortran only: Error status (integer).


DESCRIPTION
       MPI_Comm_accept establishes communication with a client. It is
       collective over the calling communicator. It returns an
       intercommunicator that allows communication with the client, after the
       client has connected with the MPI_Comm_accept function using the
       MPI_Comm_connect function.

       The port_name must have been established through a call to
       MPI_Open_port on the root.



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.

       See the MPI man page for a full list of MPI error codes.


SEE ALSO
       MPI_Comm_connect MPI_Open_port




1.4.1                            Jan 14, 2010        MPI_Comm_accept(3OpenMPI)
