NAME¶

MPI_Comm_accept - Establishes communication with a client.

SYNTAX¶

C Syntax¶

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

Fortran Syntax¶

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

Fortran 2008 Syntax¶

USE mpi_f08
MPI_Comm_accept(port_name, info, root, comm, newcomm, ierror)
	CHARACTER(LEN=*), INTENT(IN) :: port_name
	TYPE(MPI_Info), INTENT(IN) :: info
	INTEGER, INTENT(IN) :: root
	TYPE(MPI_Comm), INTENT(IN) :: comm
	TYPE(MPI_Comm), INTENT(OUT) :: newcomm
	INTEGER, OPTIONAL, INTENT(OUT) :: 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