Dune::SeqPardiso< M, X, Y > Class Template Reference

The sequential Pardiso preconditioner. More...

#include <dune/istl/pardiso.hh>

Inheritance diagram for Dune::SeqPardiso< M, X, Y >:

Public Types
enum	{ category =SolverCategory::sequential }
typedef M	matrix_type
	The matrix type the preconditioner is for. More...
typedef X	domain_type
	The domain type of the preconditioner. More...
typedef Y	range_type
	The range type of the preconditioner. More...
typedef X::field_type	field_type
	The field type of the preconditioner. More...
typedef M::RowIterator	RowIterator
typedef M::ColIterator	ColIterator

Public Member Functions
	SeqPardiso (const M &A)
	Constructor. More...
virtual void	pre (X &x, Y &b)
	Prepare the preconditioner. More...
virtual void	apply (X &v, const Y &d)
	Apply the preconditioner. More...
virtual void	post (X &x)
	Clean up. More...
	~SeqPardiso ()

Detailed Description

template<class M, class X, class Y>
class Dune::SeqPardiso< M, X, Y >

The sequential Pardiso preconditioner.

Put the Pardiso direct solver into the preconditioner framework.

Member Typedef Documentation

template<class M , class X , class Y >

typedef M::ColIterator Dune::SeqPardiso< M, X, Y >::ColIterator

template<class M , class X , class Y >

typedef X Dune::SeqPardiso< M, X, Y >::domain_type

The domain type of the preconditioner.

template<class M , class X , class Y >

typedef X::field_type Dune::SeqPardiso< M, X, Y >::field_type

The field type of the preconditioner.

template<class M , class X , class Y >

typedef M Dune::SeqPardiso< M, X, Y >::matrix_type

The matrix type the preconditioner is for.

template<class M , class X , class Y >

typedef Y Dune::SeqPardiso< M, X, Y >::range_type

The range type of the preconditioner.

template<class M , class X , class Y >

typedef M::RowIterator Dune::SeqPardiso< M, X, Y >::RowIterator

Member Enumeration Documentation

template<class M , class X , class Y >

anonymous enum

Enumerator
category	The category the preconditioner is part of.

Constructor & Destructor Documentation

template<class M , class X , class Y >

Dune::SeqPardiso< M, X, Y >::SeqPardiso ( const M &  A )

inline

Constructor.

Constructor gets all parameters to operate the prec.

Parameters

A	The matrix to operate on.

References F77_FUNC.

template<class M , class X , class Y >

Dune::SeqPardiso< M, X, Y >::~SeqPardiso ( )

inline

References F77_FUNC.

Member Function Documentation

template<class M , class X , class Y >

virtual void Dune::SeqPardiso< M, X, Y >::apply ( X &  v, const Y &  d  )

inlinevirtual

Apply the preconditioner.

Apply one step of the preconditioner to the system A(v)=d. On entry v=0 and d=b-A(x) (although this might not be computed in that way. On exit v contains the update, i.e one step computes where is the approximate inverse of the operator characterizing the preconditioner.

Parameters

[out]	v	The update to be computed
	d	The current defect.

Implements Dune::Preconditioner< X, Y >.

References F77_FUNC.

template<class M , class X , class Y >

virtual void Dune::SeqPardiso< M, X, Y >::post ( X &  x )

inlinevirtual

Clean up.

Clean up. This method is called after the last apply call for the linear system to be solved. Memory may be deallocated safely here. x is the solution of the linear equation.

Parameters

x	The right hand side of the equation.

Implements Dune::Preconditioner< X, Y >.

template<class M , class X , class Y >

virtual void Dune::SeqPardiso< M, X, Y >::pre ( X &  x, Y &  b  )

inlinevirtual

Prepare the preconditioner.

Prepare the preconditioner. A solver solves a linear operator equation A(x)=b by applying one or several steps of the preconditioner. The method pre() is called before the first apply operation. b and x are right hand side and solution vector of the linear system respectively. It may. e.g., scale the system, allocate memory or compute a (I)LU decomposition. Note: The ILU decomposition could also be computed in the constructor or with a separate method of the derived method if several linear systems with the same matrix are to be solved.

Parameters

x	The left hand side of the equation.
b	The right hand side of the equation.

Implements Dune::Preconditioner< X, Y >.

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

• pardiso.hh