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MPI_Comm_remote_group

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

 INCLUDE 'mpif.h'
 MPI_COMM_REMOTE_GROUP(COMM, GROUP, IERROR)
         INTEGER COMM, GROUP, IERROR 
 
 

 

C++ Syntax

 #include <mpi.h>
 Group Intercomm::Get_remote_group() const
 
 

 

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. 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 ALSO

 MPI_Comm_test_inter
 MPI_Comm_remote_size
 MPI_Intercomm_create
 MPI_Intercomm_merge