MPI_Comm_connect - Online Linux Manual PageSection : 3
Updated : Jan 21, 2016
Source : 1.10.2
Note : Open MPI
NAMEMPI_Comm_connect − Establishes communication with a server.
SYNTAX
C Syntax#include <mpi.h>
int MPI_Comm_connect(const gchar *port_name, MPI_Info info, int root,
MPI_Comm comm, MPI_Comm *newcomm)
Fortran SyntaxINCLUDE 'mpif.h'
MPI_COMM_CONNECT(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::Connect(const char* port_name,
const MPI::Info& info, int root) const
INPUT PARAMETERSport_name Port name (string, used only on root). info Options given by root for the connect (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 PARAMETERSnewcomm Intercommunicator with client as remote group (handle) IERROR Fortran only: Error status (integer).
DESCRIPTIONMPI_Comm_connect establishes communication with a server specified by port_name. It is collective over the calling communicator and returns an intercommunicator in which the remote group participated in an MPI_Comm_accept. The MPI_Comm_connect call must only be called after the MPI_Comm_accept call has been made by the MPI job acting as the server. If the named port does not exist (or has been closed), MPI_Comm_connect raises an error of class MPI_ERR_PORT. MPI provides no guarantee of fairness in servicing connection attempts. That is, connection attempts are not necessarily satisfied in the order in which they were initiated, and competition from other connection attempts may prevent a particular connection attempt from being satisfied. The port_name parameter is the address of the server. It must be the same as the name returned by MPI_Open_port on the server.
ERRORSAlmost 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. Note that MPI does not guarantee that an MPI program can continue past an error. See the MPI man page for a full list of MPI error codes.
SEE ALSOMPI_Comm_accept MPI_Open_port
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