#include <deal.II/matrix_free/operators.h>

Inheritance diagram for MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >:

[legend]

Public Types
using	value_type = typename Base< dim, VectorType, VectorizedArrayType >::value_type

using	size_type = typename Base< dim, VectorType, VectorizedArrayType >::size_type

Public Member Functions
	LaplaceOperator ()

virtual void	compute_diagonal () override

void	set_coefficient (const std::shared_ptr< Table< 2, VectorizedArrayType > > &scalar_coefficient)

virtual void	clear () override

std::shared_ptr< Table< 2, VectorizedArrayType > >	get_coefficient ()

void	initialize (std::shared_ptr< const MatrixFree< dim, value_type, VectorizedArrayType > > data, const std::vector< unsigned int > &selected_row_blocks=std::vector< unsigned int >(), const std::vector< unsigned int > &selected_column_blocks=std::vector< unsigned int >())

void	initialize (std::shared_ptr< const MatrixFree< dim, value_type, VectorizedArrayType > > data, const MGConstrainedDoFs &mg_constrained_dofs, const unsigned int level, const std::vector< unsigned int > &selected_row_blocks=std::vector< unsigned int >())

void	initialize (std::shared_ptr< const MatrixFree< dim, value_type, VectorizedArrayType > > data_, const std::vector< MGConstrainedDoFs > &mg_constrained_dofs, const unsigned int level, const std::vector< unsigned int > &selected_row_blocks=std::vector< unsigned int >())

size_type	m () const

size_type	n () const

void	vmult_interface_down (VectorType &dst, const VectorType &src) const

void	vmult_interface_up (VectorType &dst, const VectorType &src) const

void	vmult (VectorType &dst, const VectorType &src) const

void	Tvmult (VectorType &dst, const VectorType &src) const

void	vmult_add (VectorType &dst, const VectorType &src) const

void	Tvmult_add (VectorType &dst, const VectorType &src) const

value_type	el (const unsigned int row, const unsigned int col) const

virtual std::size_t	memory_consumption () const

void	initialize_dof_vector (VectorType &vec) const

std::shared_ptr< const MatrixFree< dim, value_type, VectorizedArrayType > >	get_matrix_free () const

const std::shared_ptr< DiagonalMatrix< VectorType > > &	get_matrix_diagonal_inverse () const

const std::shared_ptr< DiagonalMatrix< VectorType > > &	get_matrix_diagonal () const

void	precondition_Jacobi (VectorType &dst, const VectorType &src, const value_type omega) const

Protected Member Functions
void	preprocess_constraints (VectorType &dst, const VectorType &src) const

void	postprocess_constraints (VectorType &dst, const VectorType &src) const

void	set_constrained_entries_to_one (VectorType &dst) const

virtual void	Tapply_add (VectorType &dst, const VectorType &src) const

Protected Attributes
std::shared_ptr< const MatrixFree< dim, value_type, VectorizedArrayType > >	data

std::shared_ptr< DiagonalMatrix< VectorType > >	diagonal_entries

std::shared_ptr< DiagonalMatrix< VectorType > >	inverse_diagonal_entries

std::vector< unsigned int >	selected_rows

std::vector< unsigned int >	selected_columns

Private Member Functions
virtual void	apply_add (VectorType &dst, const VectorType &src) const override

void	local_apply_cell (const MatrixFree< dim, value_type, VectorizedArrayType > &data, VectorType &dst, const VectorType &src, const std::pair< unsigned int, unsigned int > &cell_range) const

void	local_diagonal_cell (const MatrixFree< dim, value_type, VectorizedArrayType > &data, VectorType &dst, const VectorType &, const std::pair< unsigned int, unsigned int > &cell_range) const

void	do_operation_on_cell (FEEvaluation< dim, fe_degree, n_q_points_1d, n_components, value_type > &phi, const unsigned int cell) const

void	mult_add (VectorType &dst, const VectorType &src, const bool transpose) const

void	adjust_ghost_range_if_necessary (const VectorType &vec, const bool is_row) const

Private Attributes
std::shared_ptr< Table< 2, VectorizedArrayType > >	scalar_coefficient

std::vector< std::vector< unsigned int > >	edge_constrained_indices

std::vector< std::vector< std::pair< value_type, value_type > > >	edge_constrained_values

bool	have_interface_matrices

Subscriptor functionality
Classes derived from Subscriptor provide a facility to subscribe to this object. This is mostly used by the SmartPointer class.
std::atomic< unsigned int >	counter

std::map< std::string, unsigned int >	counter_map

std::vector< std::atomic< bool > * >	validity_pointers

const std::type_info *	object_info

void	subscribe (std::atomic< bool > *const validity, const std::string &identifier="") const

void	unsubscribe (std::atomic< bool > *const validity, const std::string &identifier="") const

unsigned int	n_subscriptions () const

template<typename StreamType >
void	list_subscribers (StreamType &stream) const

void	list_subscribers () const

template<class Archive >
void	serialize (Archive &ar, const unsigned int version)

void	check_no_subscribers () const noexcept

using	map_value_type = decltype(counter_map)::value_type

using	map_iterator = decltype(counter_map)::iterator

static std::mutex	mutex

static ::ExceptionBase &	ExcInUse (int arg1, std::string arg2, std::string arg3)

static ::ExceptionBase &	ExcNoSubscriber (std::string arg1, std::string arg2)

Detailed Description

template<int dim, int fe_degree, int n_q_points_1d = fe_degree + 1, int n_components = 1, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>
class MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >

This class implements the operation of the action of a Laplace matrix, namely \( L_{ij} = \int_\Omega c(\mathbf x) \mathbf \nabla N_i(\mathbf x) \cdot \mathbf \nabla N_j(\mathbf x)\,d \mathbf x\), where \(c(\mathbf x)\) is the scalar heterogeneity coefficient.

Note that this class only supports the non-blocked vector variant of the Base operator because only a single FEEvaluation object is used in the apply function.

Definition at line 851 of file operators.h.

Member Typedef Documentation

◆ value_type

template<int dim, int fe_degree, int n_q_points_1d = fe_degree + 1, int n_components = 1, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

using MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::value_type = typename Base<dim, VectorType, VectorizedArrayType>::value_type

Number alias.

Definition at line 857 of file operators.h.

◆ size_type

template<int dim, int fe_degree, int n_q_points_1d = fe_degree + 1, int n_components = 1, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

using MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::size_type = typename Base<dim, VectorType, VectorizedArrayType>::size_type

size_type needed for preconditioner classes.

Definition at line 863 of file operators.h.

Constructor & Destructor Documentation

◆ LaplaceOperator()

template<int dim, int fe_degree, int n_q_points_1d, int n_components, typename VectorType , typename VectorizedArrayType >

MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::LaplaceOperator

Constructor.

Definition at line 2096 of file operators.h.

Member Function Documentation

◆ compute_diagonal()

template<int dim, int fe_degree, int n_q_points_1d, int n_components, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::compute_diagonal

overridevirtual

The diagonal is approximated by computing a local diagonal matrix per element and distributing it to the global diagonal. This will lead to wrong results on element with hanging nodes but is still an acceptable approximation to be used in preconditioners.

Implements MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >.

Definition at line 2175 of file operators.h.

◆ set_coefficient()

template<int dim, int fe_degree, int n_q_points_1d, int n_components, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::set_coefficient ( const std::shared_ptr< Table< 2, VectorizedArrayType > > & scalar_coefficient )

Set the heterogeneous scalar coefficient scalar_coefficient to be used at the quadrature points. The Table needs to have as many rows as there are cell batches in the underlying MatrixFree object, MatrixFree::n_cell_batches(). The number of batches is related to the fact that the matrix-free operators do not work on individual cells, but instead of batches of cells at once due to vectorization. The Table can take two different numbers of columns. One case is to select it equal to the total number of quadrature points in dim dimensions, which is the dimth power of the n_q_points_1d template parameter. Here, (*scalar_coefficient)(cell,q) corresponds to the value of the coefficient on cell batch cell and quadrature point index q. The second supported variant is a Table with a single column, in which case the same variable coefficient value is used at all quadrature points of a cell.

Such tables can be initialized by

std::shared_ptr<Table<2, VectorizedArray<double> > > coefficient;
coefficient = std::make_shared<Table<2, VectorizedArray<double> > >();
{
  FEEvaluation<dim,fe_degree,n_q_points_1d,1,double> fe_eval(mf_data);
  const unsigned int n_cells = mf_data.n_cell_batches();
  const unsigned int n_q_points = fe_eval.n_q_points;
  coefficient->reinit(n_cells, n_q_points);
  for (unsigned int cell=0; cell<n_cells; ++cell)
    {
      fe_eval.reinit(cell);
      for (unsigned int q=0; q<n_q_points; ++q)
        (*coefficient)(cell,q) =
          function.value(fe_eval.quadrature_point(q));
    }
}

where mf_data is a MatrixFree object and function is a function which provides the following method VectorizedArray<double> value(const Point<dim, VectorizedArray<double> > &p_vec).

If this function is not called, the coefficient is assumed to be unity.

The argument to this function is a shared pointer to such a table. The class stores the shared pointer to this table, not a deep copy and uses it to form the Laplace matrix. Consequently, you can update the table and re-use the current object to obtain the action of a Laplace matrix with this updated coefficient. Alternatively, if the table values are only to be filled once, the original shared pointer can also go out of scope in user code and the clear() command or destructor of this class will delete the table.

Definition at line 2134 of file operators.h.

◆ clear()

template<int dim, int fe_degree, int n_q_points_1d, int n_components, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::clear

overridevirtual

Resets all data structures back to the same state as for a newly constructed object.

Reimplemented from MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >.

Definition at line 2114 of file operators.h.

◆ get_coefficient()

template<int dim, int fe_degree, int n_q_points_1d, int n_components, typename VectorType , typename VectorizedArrayType >

std::shared_ptr< Table< 2, VectorizedArrayType > > MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::get_coefficient

Read/Write access to coefficients to be used in Laplace operator.

The function will throw an error if coefficients are not previously set by set_coefficient() function.

Definition at line 2155 of file operators.h.

◆ apply_add()

template<int dim, int fe_degree, int n_q_points_1d, int n_components, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::apply_add	(	VectorType &	dst,
		const VectorType &	src
	)		const

overrideprivatevirtual

Applies the laplace matrix operation on an input vector. It is assumed that the passed input and output vector are correctly initialized using initialize_dof_vector().

Implements MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >.

Definition at line 2225 of file operators.h.

◆ local_apply_cell()

template<int dim, int fe_degree, int n_q_points_1d = fe_degree + 1, int n_components = 1, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

void MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::local_apply_cell	(	const MatrixFree< dim, value_type, VectorizedArrayType > &	data,
		VectorType &	dst,
		const VectorType &	src,
		const std::pair< unsigned int, unsigned int > &	cell_range
	)		const

private

Applies the Laplace operator on a cell.

Definition at line 2324 of file operators.h.

◆ local_diagonal_cell()

template<int dim, int fe_degree, int n_q_points_1d = fe_degree + 1, int n_components = 1, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

void MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::local_diagonal_cell	(	const MatrixFree< dim, value_type, VectorizedArrayType > &	data,
		VectorType &	dst,
		const VectorType &	,
		const std::pair< unsigned int, unsigned int > &	cell_range
	)		const

private

Apply diagonal part of the Laplace operator on a cell.

Definition at line 2360 of file operators.h.

◆ do_operation_on_cell()

template<int dim, int fe_degree, int n_q_points_1d = fe_degree + 1, int n_components = 1, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

void MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::do_operation_on_cell	(	FEEvaluation< dim, fe_degree, n_q_points_1d, n_components, value_type > &	phi,
		const unsigned int	cell
	)		const

private

Apply Laplace operator on a cell cell.

Definition at line 2260 of file operators.h.

◆ initialize() [1/3]

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::initialize	(	std::shared_ptr< const MatrixFree< dim, value_type, VectorizedArrayType > >	data,
		const std::vector< unsigned int > &	selected_row_blocks = `std::vector<unsigned int>()`,
		const std::vector< unsigned int > &	selected_column_blocks = `std::vector<unsigned int>()`
	)

inherited

Initialize operator on fine scale.

The optional selection vector allows to choose only some components from the underlying MatrixFree object, e.g. just a single one. The entry selected_row_blocks[i] in the vector chooses the DoFHandler and AffineConstraints object that was given as the selected_row_blocks[i]-th argument to the MatrixFree::reinit() call. Different arguments for rows and columns also make it possible to select non-diagonal blocks or rectangular blocks. If the row vector is empty, all components are selected, otherwise its size must be smaller or equal to MatrixFree::n_components() and all indices need to be unique and within the range of 0 and MatrixFree::n_components(). If the column selection vector is empty, it is taken the same as the row selection, defining a diagonal block.

Definition at line 1238 of file operators.h.

◆ initialize() [2/3]

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::initialize	(	std::shared_ptr< const MatrixFree< dim, value_type, VectorizedArrayType > >	data,
		const MGConstrainedDoFs &	mg_constrained_dofs,
		const unsigned int	level,
		const std::vector< unsigned int > &	selected_row_blocks = `std::vector<unsigned int>()`
	)

inherited

Initialize operator on a level level for a single FiniteElement.

The optional selection vector allows to choose only some components from the underlying MatrixFree object, e.g. just a single one. The entry selected_row_blocks[i] in the vector chooses the DoFHandler and AffineConstraints object that was given as the selected_row_blocks[i]-th argument to the MatrixFree::reinit() call. Since a multigrid operator is always associated to inverting a matrix and thus represents a diagonal block, the same vector for rows and columns is used as opposed to the non-level initialization function. If empty, all components are selected.

Definition at line 1291 of file operators.h.

◆ initialize() [3/3]

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::initialize	(	std::shared_ptr< const MatrixFree< dim, value_type, VectorizedArrayType > >	data_,
		const std::vector< MGConstrainedDoFs > &	mg_constrained_dofs,
		const unsigned int	level,
		const std::vector< unsigned int > &	selected_row_blocks = `std::vector<unsigned int>()`
	)

inherited

Initialize operator on a level level for multiple FiniteElement objects.

The optional selection vector allows to choose only some components from the underlying MatrixFree object, e.g. just a single one. The entry selected_row_blocks[i] in the vector chooses the DoFHandler and AffineConstraints object that was given as the selected_row_blocks[i]-th argument to the MatrixFree::reinit() call. Since a multigrid operator is always associated to inverting a matrix and thus represents a diagonal block, the same vector for rows and columns is used as opposed to the non-level initialization function. If empty, all components are selected.

Definition at line 1307 of file operators.h.

◆ m()

template<int dim, typename VectorType , typename VectorizedArrayType >

Base< dim, VectorType, VectorizedArrayType >::size_type MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::m

inherited

Return the dimension of the codomain (or range) space.

Definition at line 1160 of file operators.h.

◆ n()

template<int dim, typename VectorType , typename VectorizedArrayType >

Base< dim, VectorType, VectorizedArrayType >::size_type MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::n

inherited

Return the dimension of the domain space.

Definition at line 1174 of file operators.h.

◆ vmult_interface_down()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::vmult_interface_down	(	VectorType &	dst,
		const VectorType &	src
	)		const

inherited

vmult operator for interface.

Definition at line 1557 of file operators.h.

◆ vmult_interface_up()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::vmult_interface_up	(	VectorType &	dst,
		const VectorType &	src
	)		const

inherited

vmult operator for interface.

Definition at line 1611 of file operators.h.

◆ vmult()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::vmult	(	VectorType &	dst,
		const VectorType &	src
	)		const

inherited

Matrix-vector multiplication.

Definition at line 1396 of file operators.h.

◆ Tvmult()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::Tvmult	(	VectorType &	dst,
		const VectorType &	src
	)		const

inherited

Transpose matrix-vector multiplication.

Definition at line 1652 of file operators.h.

◆ vmult_add()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::vmult_add	(	VectorType &	dst,
		const VectorType &	src
	)		const

inherited

Adding Matrix-vector multiplication.

Definition at line 1409 of file operators.h.

◆ Tvmult_add()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::Tvmult_add	(	VectorType &	dst,
		const VectorType &	src
	)		const

inherited

Adding transpose matrix-vector multiplication.

Definition at line 1420 of file operators.h.

◆ el()

template<int dim, typename VectorType , typename VectorizedArrayType >

Base< dim, VectorType, VectorizedArrayType >::value_type MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::el	(	const unsigned int	row,
		const unsigned int	col
	)		const

inherited

Return the value of the matrix entry (row,col). In matrix-free context this function is valid only for row==col when diagonal is initialized.

Definition at line 1198 of file operators.h.

◆ memory_consumption()

template<int dim, typename VectorType , typename VectorizedArrayType >

std::size_t MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::memory_consumption

virtualinherited

Determine an estimate for the memory consumption (in bytes) of this object.

Definition at line 1666 of file operators.h.

◆ initialize_dof_vector()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::initialize_dof_vector ( VectorType & vec ) const

inherited

A wrapper for initialize_dof_vector() of MatrixFree object.

Definition at line 1213 of file operators.h.

◆ get_matrix_free()

template<int dim, typename VectorType , typename VectorizedArrayType >

std::shared_ptr< const MatrixFree< dim, typename Base< dim, VectorType, VectorizedArrayType >::value_type, VectorizedArrayType > > MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::get_matrix_free

inherited

Get read access to the MatrixFree object stored with this operator.

Definition at line 1680 of file operators.h.

◆ get_matrix_diagonal_inverse()

template<int dim, typename VectorType , typename VectorizedArrayType >

const std::shared_ptr< DiagonalMatrix< VectorType > > & MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::get_matrix_diagonal_inverse

inherited

Get read access to the inverse diagonal of this operator.

Definition at line 1689 of file operators.h.

◆ get_matrix_diagonal()

template<int dim, typename VectorType , typename VectorizedArrayType >

const std::shared_ptr< DiagonalMatrix< VectorType > > & MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::get_matrix_diagonal

inherited

Get read access to the diagonal of this operator.

Definition at line 1702 of file operators.h.

◆ precondition_Jacobi()

template<int dim, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::precondition_Jacobi	(	VectorType &	dst,
		const VectorType &	src,
		const value_type	omega
	)		const

inherited

Apply the Jacobi preconditioner, which multiplies every element of the src vector by the inverse of the respective diagonal element and multiplies the result with the relaxation factor omega.

Definition at line 1724 of file operators.h.

◆ preprocess_constraints()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::preprocess_constraints	(	VectorType &	dst,
		const VectorType &	src
	)		const

protectedinherited

Perform necessary operations related to constraints before calling apply_add() or Tapply_add() inside mult_add().

Definition at line 1473 of file operators.h.

◆ postprocess_constraints()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::postprocess_constraints	(	VectorType &	dst,
		const VectorType &	src
	)		const

protectedinherited

Perform necessary operations related to constraints after calling apply_add() or Tapply_add() inside mult_add().

Definition at line 1523 of file operators.h.

◆ set_constrained_entries_to_one()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::set_constrained_entries_to_one ( VectorType & dst ) const

protectedinherited

Set constrained entries (both from hanging nodes and edge constraints) of dst to one.

Definition at line 1377 of file operators.h.

◆ Tapply_add()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::Tapply_add	(	VectorType &	dst,
		const VectorType &	src
	)		const

protectedvirtualinherited

Apply transpose operator to src and add result in dst.

Default implementation is to call apply_add().

Definition at line 1713 of file operators.h.

◆ mult_add()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::mult_add	(	VectorType &	dst,
		const VectorType &	src,
		const bool	transpose
	)		const

privateinherited

Function which implements vmult_add (transpose = false) and Tvmult_add (transpose = true).

Definition at line 1503 of file operators.h.

◆ adjust_ghost_range_if_necessary()

template<int dim, typename VectorType , typename VectorizedArrayType >

void MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::adjust_ghost_range_if_necessary	(	const VectorType &	vec,
		const bool	is_row
	)		const

privateinherited

Adjust the ghost range of the vectors to the storage requirements of the underlying MatrixFree class. This is used inside the mult_add() as well as vmult_interface_up() and vmult_interface_down() methods in order to ensure that the cell loops will be able to access the ghost indices with the correct local indices.

Definition at line 1431 of file operators.h.

Member Data Documentation

◆ scalar_coefficient

template<int dim, int fe_degree, int n_q_points_1d = fe_degree + 1, int n_components = 1, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

std::shared_ptr<Table<2, VectorizedArrayType> > MatrixFreeOperators::LaplaceOperator< dim, fe_degree, n_q_points_1d, n_components, VectorType, VectorizedArrayType >::scalar_coefficient

private

User-provided heterogeneity coefficient.

Definition at line 991 of file operators.h.

◆ data

template<int dim, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

std::shared_ptr<const MatrixFree<dim, value_type, VectorizedArrayType> > MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::data

protectedinherited

MatrixFree object to be used with this operator.

Definition at line 438 of file operators.h.

◆ diagonal_entries

template<int dim, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

std::shared_ptr<DiagonalMatrix<VectorType> > MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::diagonal_entries

protectedinherited

A shared pointer to a diagonal matrix that stores the diagonal elements as a vector.

Definition at line 444 of file operators.h.

◆ inverse_diagonal_entries

template<int dim, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

std::shared_ptr<DiagonalMatrix<VectorType> > MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::inverse_diagonal_entries

protectedinherited

A shared pointer to a diagonal matrix that stores the inverse of diagonal elements as a vector.

Definition at line 450 of file operators.h.

◆ selected_rows

template<int dim, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

std::vector<unsigned int> MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::selected_rows

protectedinherited

A vector which defines the selection of sub-components of MatrixFree for the rows of the matrix representation.

Definition at line 456 of file operators.h.

◆ selected_columns

template<int dim, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

std::vector<unsigned int> MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::selected_columns

protectedinherited

A vector which defines the selection of sub-components of MatrixFree for the columns of the matrix representation.

Definition at line 462 of file operators.h.

◆ edge_constrained_indices

template<int dim, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

std::vector<std::vector<unsigned int> > MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::edge_constrained_indices

privateinherited

Indices of DoFs on edge in case the operator is used in GMG context.

Definition at line 468 of file operators.h.

◆ edge_constrained_values

template<int dim, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

std::vector<std::vector<std::pair<value_type, value_type> > > MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::edge_constrained_values

mutableprivateinherited

Auxiliary vector.

Definition at line 474 of file operators.h.

◆ have_interface_matrices

template<int dim, typename VectorType = LinearAlgebra::distributed::Vector<double>, typename VectorizedArrayType = VectorizedArray<typename VectorType::value_type>>

bool MatrixFreeOperators::Base< dim, VectorType, VectorizedArrayType >::have_interface_matrices

privateinherited

A flag which determines whether or not this operator has interface matrices in GMG context.

Definition at line 480 of file operators.h.

The documentation for this class was generated from the following file:

include/deal.II/matrix_free/operators.h

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Subscriptor functionality

Detailed Description

Member Typedef Documentation

◆ value_type

◆ size_type

Constructor & Destructor Documentation

◆ LaplaceOperator()

Member Function Documentation

◆ compute_diagonal()

◆ set_coefficient()

◆ clear()

◆ get_coefficient()

◆ apply_add()

◆ local_apply_cell()

◆ local_diagonal_cell()

◆ do_operation_on_cell()

◆ initialize() [1/3]

◆ initialize() [2/3]

◆ initialize() [3/3]

◆ m()

◆ n()

◆ vmult_interface_down()

◆ vmult_interface_up()

◆ vmult()

◆ Tvmult()

◆ vmult_add()

◆ Tvmult_add()

◆ el()

◆ memory_consumption()

◆ initialize_dof_vector()

◆ get_matrix_free()

◆ get_matrix_diagonal_inverse()

◆ get_matrix_diagonal()

◆ precondition_Jacobi()

◆ preprocess_constraints()

◆ postprocess_constraints()

◆ set_constrained_entries_to_one()

◆ Tapply_add()

◆ mult_add()

◆ adjust_ghost_range_if_necessary()

Member Data Documentation

◆ scalar_coefficient

◆ data

◆ diagonal_entries

◆ inverse_diagonal_entries

◆ selected_rows

◆ selected_columns

◆ edge_constrained_indices

◆ edge_constrained_values

◆ have_interface_matrices