ExaDG::InverseMassPreconditioner< dim, n_components, Number > Class Template Reference

#include <inverse_mass_preconditioner.h>

Inheritance diagram for ExaDG::InverseMassPreconditioner< dim, n_components, Number >:

Public Types
typedef PreconditionerBase< Number >::VectorType	VectorType
Public Types inherited from ExaDG::PreconditionerBase< Number >
typedef dealii::LinearAlgebra::distributed::Vector< Number >	VectorType

Public Member Functions
	InverseMassPreconditioner (dealii::MatrixFree< dim, Number > const &matrix_free, InverseMassOperatorData const inverse_mass_operator_data)
void	vmult (VectorType &dst, VectorType const &src) const final
void	update () final
Public Member Functions inherited from ExaDG::PreconditionerBase< Number >
bool	needs_update () const
virtual void	vmult (VectorType &dst, VectorType const &src) const=0
virtual std::shared_ptr< TimerTree >	get_timings () const

Additional Inherited Members
Protected Attributes inherited from ExaDG::PreconditionerBase< Number >
bool	update_needed

Detailed Description

template<int dim, int n_components, typename Number>
class ExaDG::InverseMassPreconditioner< dim, n_components, Number >

A preconditioner available for discontinuous Galerkin methods. This class is simply a wrapper around the InverseMassOperator, realizing the interface defined by PreconditionerBase. It is not only available for ElementType:Hypercube, but e.g. also for ElementType::Simplex.

Note, however, that application of this preconditioner might be expensive in case that the inverse mass can not be realized as a matrix-free operator evaluation (which is the case for simplex elements). In this case, you might want to use a simple Jacobi preconditioner as an efficient alternative to the inverse mass preconditioner.

Member Function Documentation

update()

template<int dim, int n_components, typename Number>

void ExaDG::InverseMassPreconditioner< dim, n_components, Number >::update ( )

inlinefinalvirtual

Implements ExaDG::PreconditionerBase< Number >.

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

• include/exadg/solvers_and_preconditioners/preconditioners/inverse_mass_preconditioner.h