Dune::PDELab::ISTLBackend_SEQ_AMG_4_DG< DGGO, CGGFS, TransferLOP, DGPrec, Solver > Class Template Reference

#include <dune/pdelab/backend/istl/seq_amg_dg_backend.hh>

Public Member Functions
V::ElementType	norm (const V &v) const
	compute global norm of a vector More...
void	setParameters (const Parameters &amg_parameters_)
	set AMG parameters More...
const Parameters &	parameters () const
	Get the parameters describing the behaviuour of AMG. More...
void	setReuse (bool reuse_)
	Set whether the AMG should be reused again during call to apply().
bool	getReuse () const
	Return whether the AMG is reused during call to apply()
void	setDGSmootherRelaxation (double relaxation_)
	set number of presmoothing steps on the DG level
void	setNoDGPreSmoothSteps (int n1_)
	set number of presmoothing steps on the DG level
void	setNoDGPostSmoothSteps (int n2_)
	set number of postsmoothing steps on the DG level
void	apply (M &A, V &z, V &r, typename Dune::template FieldTraits< typename V::ElementType >::real_type reduction)
	solve the given linear system More...
const Dune::PDELab::LinearSolverResult< double > &	result () const
	Return access to result data.

Detailed Description

template<class DGGO, class CGGFS, class TransferLOP, template< class, class, class, int > class DGPrec, template< class > class Solver>
class Dune::PDELab::ISTLBackend_SEQ_AMG_4_DG< DGGO, CGGFS, TransferLOP, DGPrec, Solver >

Sequential solver backend for using AMG for DG in PDELab

The template parameters are: DGGO GridOperator for DG discretization, allows access to matrix, vector and grid function space CGGFS grid function space for CG subspace DGPrec preconditioner for DG problem Solver solver to be used on the complete problem

Member Function Documentation

apply()

template<class DGGO , class CGGFS , class TransferLOP , template< class, class, class, int > class DGPrec, template< class > class Solver>

void Dune::PDELab::ISTLBackend_SEQ_AMG_4_DG< DGGO, CGGFS, TransferLOP, DGPrec, Solver >::apply ( M &  A, V &  z, V &  r, typename Dune::template FieldTraits< typename V::ElementType >::real_type  reduction  )

inline

solve the given linear system

Parameters

[in]	A	the given matrix
[out]	z	the solution vector to be computed
[in]	r	right hand side
[in]	reduction	to be achieved

norm()

template<class DGGO , class CGGFS , class TransferLOP , template< class, class, class, int > class DGPrec, template< class > class Solver>

V::ElementType Dune::PDELab::ISTLBackend_SEQ_AMG_4_DG< DGGO, CGGFS, TransferLOP, DGPrec, Solver >::norm ( const V &  v ) const

inline

compute global norm of a vector

Parameters

[in]

v

the given vector

parameters()

template<class DGGO , class CGGFS , class TransferLOP , template< class, class, class, int > class DGPrec, template< class > class Solver>

const Parameters & Dune::PDELab::ISTLBackend_SEQ_AMG_4_DG< DGGO, CGGFS, TransferLOP, DGPrec, Solver >::parameters ( ) const

inline

Get the parameters describing the behaviuour of AMG.

The returned object can be adjusted to ones needs and then can be reset using setParameters.

Returns

The object holding the parameters of AMG.

setParameters()

template<class DGGO , class CGGFS , class TransferLOP , template< class, class, class, int > class DGPrec, template< class > class Solver>

void Dune::PDELab::ISTLBackend_SEQ_AMG_4_DG< DGGO, CGGFS, TransferLOP, DGPrec, Solver >::setParameters ( const Parameters &  amg_parameters_ )

inline

set AMG parameters

Parameters

[in]

amg_parameters_

a parameter object of Type Dune::Amg::Parameters

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

• dune/pdelab/backend/istl/seq_amg_dg_backend.hh