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MPI_Comm_remote_group(3) man page (version 5.0.0rc2)

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Table of Contents

Name

MPI_Comm_remote_group - Accesses the remote group associated with an intercommunicator.

Syntax

C Syntax


#include <mpi.h>
int MPI_Comm_remote_group(MPI_Comm comm, MPI_Group *group)

Fortran Syntax


USE MPI
! or the older form: INCLUDE ’mpif.h’
MPI_COMM_REMOTE_GROUP(COMM, GROUP, IERROR)
    INTEGER    COMM, GROUP, IERROR

Fortran 2008 Syntax


USE mpi_f08
MPI_Comm_remote_group(comm, group, ierror)
    TYPE(MPI_Comm), INTENT(IN) :: comm
    TYPE(MPI_Group), INTENT(OUT) :: group
    INTEGER, OPTIONAL, INTENT(OUT) :: ierror

Input Parameter

comm
Communicator.

Output Parameters

group
Remote group of communicator.
IERROR
Fortran only: Error status (integer).

Description

MPI_Comm_remote_group accesses the remote group associated with an intercommunicator.

The intercommunicator accessors (MPI_Comm_test_inter, MPI_Comm_remote_size, MPI_Comm_remote_group) are all local operations.

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 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 Also


MPI_Comm_test_inter
MPI_Comm_remote_size
MPI_Intercomm_create
MPI_Intercomm_merge

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