Dune::PDELab::ISTLBackend_SEQ_LS_AMG_SSOR< GO > Class Template Reference

Sequential Loop solver preconditioned with AMG smoothed by SSOR. More...

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

Public Member Functions
	ISTLBackend_SEQ_LS_AMG_SSOR (unsigned maxiter_=5000, int verbose_=1, bool reuse_=false, bool usesuperlu_=true)
	Constructor. More...
void	setparams (Parameters params_)
	set AMG parameters 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()
V::ElementType	norm (const V &v) const
	compute global norm of a vector More...
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 ISTLAMGStatistics &	statistics () const
	Get statistics of the AMG solver (no of levels, timings). More...
const Dune::PDELab::LinearSolverResult< double > &	result () const
	Return access to result data.

Detailed Description

template<class GO>
class Dune::PDELab::ISTLBackend_SEQ_LS_AMG_SSOR< GO >

Sequential Loop solver preconditioned with AMG smoothed by SSOR.

Template Parameters

GO	The type of the grid operator (or the fakeGOTraits class for the old grid operator space).

Constructor & Destructor Documentation

ISTLBackend_SEQ_LS_AMG_SSOR()

template<class GO >

Dune::PDELab::ISTLBackend_SEQ_LS_AMG_SSOR< GO >::ISTLBackend_SEQ_LS_AMG_SSOR ( unsigned  maxiter_ = 5000, int  verbose_ = 1, bool  reuse_ = false, bool  usesuperlu_ = true  )

inline

Constructor.

Parameters

maxiter_	The maximum number of iterations allowed.
verbose_	The verbosity level to use.
reuse_	Set true, if the Matrix to be used is always identical (AMG aggregation is then only performed once).
usesuperlu_	Set false, to suppress the no SuperLU warning

Member Function Documentation

apply()

template<class GO , template< class, class, class, int > class Preconditioner, template< class > class Solver, bool skipBlocksizeCheck = false>

void Dune::PDELab::ISTLBackend_SEQ_AMG< GO, Preconditioner, Solver, skipBlocksizeCheck >::apply ( M &  A, V &  z, V &  r, typename Dune::template FieldTraits< typename V::ElementType >::real_type  reduction  )

inlineinherited

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 GO , template< class, class, class, int > class Preconditioner, template< class > class Solver, bool skipBlocksizeCheck = false>

V::ElementType Dune::PDELab::ISTLBackend_SEQ_AMG< GO, Preconditioner, Solver, skipBlocksizeCheck >::norm ( const V &  v ) const

inlineinherited

compute global norm of a vector

Parameters

[in]

v

the given vector

setparams()

template<class GO , template< class, class, class, int > class Preconditioner, template< class > class Solver, bool skipBlocksizeCheck = false>

void Dune::PDELab::ISTLBackend_SEQ_AMG< GO, Preconditioner, Solver, skipBlocksizeCheck >::setparams ( Parameters  params_ )

inlineinherited

set AMG parameters

Parameters

[in]

params_

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

statistics()

template<class GO , template< class, class, class, int > class Preconditioner, template< class > class Solver, bool skipBlocksizeCheck = false>

const ISTLAMGStatistics & Dune::PDELab::ISTLBackend_SEQ_AMG< GO, Preconditioner, Solver, skipBlocksizeCheck >::statistics ( ) const

inlineinherited

Get statistics of the AMG solver (no of levels, timings).

Returns

statistis of the AMG solver.

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

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