NAME¶
MPI_Group_free - Frees a group.
SYNTAX¶
C Syntax¶
#include <mpi.h>
int MPI_Group_free(MPI_Group * group)
Fortran Syntax¶
INCLUDE 'mpif.h'
MPI_GROUP_FREE( GROUP, IERROR)
INTEGER GROUP, IERROR
C++ Syntax¶
#include <mpi.h>
void Group::Free()
- 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++ 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.