Dear community,
I tried to put adaptive_refinement function into separate files. It works
pretty well without parallel. But I get a link error when using the
parallel framework, which said:
undefined reference to `void
dealii::parallel::distributed::GridRefinement::refine_and_coarsen_fixed_number<1,
dealii::Vector<float>, 1>(dealii::parallel::distributed::Triangulation<1, 1>&,
dealii::Vector<float> const&, double, double, unsigned int)'
The weird thing is if I do not use this template class, namely use this
refinement function directly just like step-40, it runs without that link
error. However, I really want to separate it so that it can be used in
different cases.
The following is the code. Any suggestions would be appreciated.
- grid_handler.h header file:
template <int dim>class GridHandler {
public:
static void adaptive_refinement(const DoFHandler<dim> &dof_handler,
const LA::MPI::Vector &solution,
parallel::distributed::Triangulation<dim>
&triangulation);
}
- grid_handler.cc source file:
template<int dim>void
GridHandler<dim>::adaptive_refinement(const DoFHandler<dim> &dof_handler,
const LA::MPI::Vector &solution,
parallel::distributed::Triangulation<dim>
&triangulation) {
Vector<float> estimated_error_per_cell(triangulation.n_active_cells());
KellyErrorEstimator<dim>::estimate(dof_handler,
QGauss<dim-1>(dof_handler.get_fe().degree+2),
typename FunctionMap<dim>::type(),
solution,
estimated_error_per_cell);
// Refine and Coarsen
parallel::distributed::GridRefinement::refine_and_coarsen_fixed_number(triangulation,
estimated_error_per_cell,
0.3,
0.03);// GridRefinement::refine_and_coarsen_fixed_number(triangulation,//
estimated_error_per_cell,//
0.3,//
0.03);
triangulation.execute_coarsening_and_refinement();
}
// Explicit instantiationstemplate class GridHandler<1>;template class
GridHandler<2>;template class GridHandler<3>;
Thank you!
Best,
Qing
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