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MPI_Comm_accept(3) man page (version 5.0.0rc2)

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Name

C]MPI_Comm_acceptR] - Establishes communication with a client.

Syntax

C Syntax



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



C]USE MPI! or the older form: INCLUDE [aq]mpif.h[aq]MPI_COMM_ACCEPT(PORT_NAME, INFO, ROOT, COMM, NEWCOMM, IERROR) CHARACTER*(*) PORT_NAME INTEGER INFO, ROOT, COMM, NEWCOMM, IERRORR]Fortran 2008 Syntax



C]USE mpi_f08MPI_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) :: ierrorR]Input Parameters

[bu]
C]port_nameR] : Port name (string, used only on I]rootR]).
[bu]
C]infoR] : Options given by root for the accept (handle, used only on root). No options currently supported.
[bu]
C]rootR] : Rank in I]commR] of root node (integer).
[bu]
C]commR] : Intracommunicator over which call is collective (handle).

Output Parameters

[bu]
C]newcommR] : Intercommunicator with client as remote group (handle)
[bu]
C]IERRORR] : Fortran only: Error status (integer).

Description

C]MPI_Comm_acceptR] 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 C]MPI_Comm_acceptR] function using the C]MPI_Comm_connectR] function. The C]port_nameR] must have been established through a call to C]MPI_Open_portR] on the C]rootR].

Errors

Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. 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 C]MPI_Comm_set_errhandlerR]; the predefined error handler C]MPI_ERRORS_RETURNR] 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

C]MPI_Comm_connectR](3) C]MPI_Open_portR](3)


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