gsBlockPrecondStokes< T, MatOrder, BlockFType > Class Template Reference

Detailed Description

template<class T, int MatOrder, class BlockFType = gsINSPrecondBlockF<T, MatOrder>>
class gismo::gsBlockPrecondStokes< T, MatOrder, BlockFType >

Block diagonal preconditioner for the Stokes problem.

Template Parameters

T	coefficient type
BlockFType	type of block \fF\f

Inherits gsINSPreconditioner< T, MatOrder >.

Collaboration diagram for gsBlockPrecondStokes< T, MatOrder, BlockFType >:

Public Member Functions
virtual void	apply (const gsMatrix< T > &input, gsMatrix< T > &x) const
	Apply the preconditioner. Computes the vector \fx = P^{-1} y\f.
virtual int	cols () const
	Returns the number of columns of the preconditioner.
virtual std::string	getName ()
	Returns the preconditioner name as a string.
	gsBlockPrecondStokes (const std::map< std::string, gsSparseMatrix< T, MatOrder > > &mat, const gsOptionList &opt)
	Constructor.
virtual int	rows () const
	Returns the number of rows of the preconditioner.
virtual void	setOptions (const gsOptionList &)
	Set options based on a gsOptionList object.
virtual void	update (const std::map< std::string, gsSparseMatrix< T, MatOrder > > &mat)
	Update the preconditioner (new linearization or time step).

Static Public Member Functions
static gsOptionList	defaultOptions ()
	Returns default preconditioner options as a gsOptionList object.
static gsIdentityOp< T >	Identity (const index_t dim)
	Identity operator.
static uPtr	make ()
	Returns a unique pointer to a newly created instance.
static uPtr	make (const std::map< std::string, gsSparseMatrix< T, MatOrder > > &mat, const gsOptionList &opt)
	Returns a unique pointer to a newly created instance.
static uPtr	make (std::string precType, const std::map< std::string, gsSparseMatrix< T, MatOrder > > &mat, const gsOptionList &opt)
	Returns a unique pointer to a newly created instance of the given preconditioner type.

Constructor & Destructor Documentation

gsBlockPrecondStokes()

template<class T , int MatOrder, class BlockFType = gsINSPrecondBlockF<T, MatOrder>>

gsBlockPrecondStokes ( const std::map< std::string, gsSparseMatrix< T, MatOrder > > &  mat, const gsOptionList &  opt  )

inline

Constructor.

Parameters

[in]	mat	a reference to the std::map of labeled matrices needed for construction of the preconditioner
[in]	opt	a list of options for the preconditioner

Member Function Documentation

apply()

template<class T , int MatOrder, class BlockFType >

void apply ( const gsMatrix< T > &  input, gsMatrix< T > &  x  ) const

virtual

Apply the preconditioner. Computes the vector \fx = P^{-1} y\f.

Parameters

[in]	input	a const reference the vector \f y \f
[out]	x	a reference to the resulting vector \f x \f

Implements gsLinearOperator< T >.

make() [1/2]

template<class T , int MatOrder, class BlockFType = gsINSPrecondBlockF<T, MatOrder>>

static uPtr make ( const std::map< std::string, gsSparseMatrix< T, MatOrder > > &  mat, const gsOptionList &  opt  )

inlinestatic

Returns a unique pointer to a newly created instance.

Parameters

[in]	mat	a const reference to std::map of labeled matrices needed for construction of the preconditioner
[in]	opt	a list of options for the preconditioner

make() [2/2]

template<class T , int MatOrder>

gsINSPreconditioner< T, MatOrder >::uPtr make ( std::string  precType, const std::map< std::string, gsSparseMatrix< T, MatOrder > > &  mat, const gsOptionList &  opt  )

staticinherited

Returns a unique pointer to a newly created instance of the given preconditioner type.

Parameters

[in]	precType	the reqiured preconditioner type as a string
[in]	mat	a const reference to std::map of labeled matrices needed for construction of the preconditioner (assuming the following order: NS system matrix, mass matrix (velocity, pressure or both), other matrices)
[in]	opt	a list of options for the preconditioner

update()

template<class T , int MatOrder, class BlockFType = gsINSPrecondBlockF<T, MatOrder>>

virtual void update ( const std::map< std::string, gsSparseMatrix< T, MatOrder > > &  mat )

inlinevirtual

Update the preconditioner (new linearization or time step).

Parameters

[in]

mat

a const reference to std::map of updated matrices