MPI_Group_free(3) Open MPI MPI_Group_free(3)
NAME
MPI_Group_free - Frees a group.
SYNTAX
C Syntax
#include <mpi.h>
int MPI_Group_free(MPI_Group *group)
Fortran Syntax
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_GROUP_FREE(GROUP, IERROR)
INTEGER GROUP, IERROR
Fortran 2008 Syntax
USE mpi_f08
MPI_Group_free(group, ierror)
TYPE(MPI_Group), INTENT(INOUT) :: group
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
C++ Syntax
#include <mpi.h>
void Group::Free()
INPUT/OUTPUT PARAMETER
group Group (handle).
OUTPUT PARAMETER
IERROR Fortran only: Error status (integer).
DESCRIPTION
This operation marks a group object for deallocation. The handle group
is set to MPI_GROUP_NULL by the call. Any ongoing operation using this
group will complete normally.
NOTE
On return, group is set to MPI_GROUP_NULL.
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++ func-
tions 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.
4.1.2 Nov 24, 2021 MPI_Group_free(3)
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