The basic container that stores a base vector and a corresponding basis. More...

#include <VectorFacade.hpp>

Public Types
using	size_type = typename Impl::size_type

using	value_type = typename Impl::value_type

template<class V >
using	HasLocalSize = decltype(std::declval< V >().localSize())

template<class V >
using	HasGlobalSize = decltype(std::declval< V >().globalSize())

Public Member Functions
template<class GlobalBasis , class = std::void_t<decltype(std::declval<GlobalBasis>().indexDistribution())>>
	VectorFacade (GlobalBasis const &basis)

Impl const &	impl () const
	Return the underlying linear algebra backend.

Impl &	impl ()

std::size_t	localSize () const
	Return the number of entries in the local part of the vector.

std::size_t	globalSize () const
	Return the number of entries in the global vector.

template<class Basis >
void	resize (Basis const &basis)
	Resize the vector to the size of the basis.

template<class Basis >
void	resizeZero (Basis const &basis)
	Resize the vector to the size of the basis and set to zero.

template<class Basis >
void	init (Basis const &basis, bool clear)

void	finish ()
	Finish the insertion of values, see init()

template<class Index , class Assign = Assigner::plus_assign, REQUIRES(Concepts::MultiIndex< Index >) >
void	insert (Index const &idx, typename Impl::value_type const &value, Assign assign={})
	Insert a single value into the matrix (add or overwrite to existing value) More...

template<class Index , REQUIRES(Concepts::MultiIndex< Index >) >
void	set (Index const &idx, typename Impl::value_type const &value)
	See insert for assignment operation Assigner::assign.

template<class Index , REQUIRES(Concepts::MultiIndex< Index >) >
void	add (Index const &idx, typename Impl::value_type const &value)
	See insert for assignment operation Assigner::plus_assign.

template<class Index , REQUIRES(Concepts::MultiIndex< Index >) >
Impl::value_type	get (Index const &idx) const
	Return the value of the vector at the local index idx.

template<class LocalView , class Node , class Buffer , REQUIRES(Concepts::LocalView< LocalView >) , REQUIRES(Concepts::BasisNode< Node >) >
void	gather (LocalView const &localView, Node const &node, Buffer &buffer) const
	Extract values from the vector referring to the given local indices and store it into a buffer. More...

template<class LocalView , class Buffer , REQUIRES(Concepts::LocalView< LocalView >) >
void	gather (LocalView const &localView, Buffer &buffer) const

template<class Index , class Buffer , REQUIRES(Concepts::MultiIndex< Index >) >
void	gather (std::vector< Index > const &indices, Buffer &buffer)
	Call gather the `values` associated to the `indices` into the buffer.

template<class LocalView , class Node , class NodeVector , class MaskRange , class Assign , REQUIRES(Concepts::LocalView< LocalView >) , REQUIRES(Concepts::BasisNode< Node >) >
void	scatter (LocalView const &localView, Node const &node, NodeVector const &localVector, MaskRange const &mask, Assign assign)
	Insert a block of values into the vector (add or overwrite to existing values) More...

template<class LocalView , class Node , class NodeVector , class Assign , REQUIRES(Concepts::LocalView< LocalView >) , REQUIRES(Concepts::BasisNode< Node >) >
void	scatter (LocalView const &localView, Node const &node, NodeVector const &localVector, Assign assign)
	Call scatter with `MaskRange` set to FakeContainer.

template<class LocalView , class LocalVector , class Assign , REQUIRES(Concepts::LocalView< LocalView >) >
void	scatter (LocalView const &localView, LocalVector const &localVector, Assign assign)
	Call scatter with `Node` given by the tree of the `localView`.

template<class Index , class Buffer , REQUIRES(Concepts::MultiIndex< Index >) >
void	scatter (std::vector< Index > const &indices, Buffer const &values)
	Call scatter the `values` associated to the `indices` into the vector.

template<class LocalInd , class Func >
void	forEach (LocalInd const &localInd, Func &&func)
	Apply `func` to each value at given indices `localInd`. More...

template<class LocalInd , class Func >
void	forEach (LocalInd const &localInd, Func &&func) const
	Apply `func` to each value at given indices `localInd`. More...

Detailed Description

template<class T, template< class > class VectorImpl>
class AMDiS::VectorFacade< T, VectorImpl >

The basic container that stores a base vector and a corresponding basis.

A vector storing all the assembled Operators indexed with DOF indices. The vector data is associated to a global basis.

Template Parameters

T	The coefficient type of the vector
VectorImpl	A linear-algebra backend for the vector storage

Constructor & Destructor Documentation

◆ VectorFacade()

VectorFacade ( GlobalBasis const & basis )

inline

Constructor. Forwards the basis to the implementation class and constructs a (type-erased) size-info object.

Member Function Documentation

◆ forEach() [1/2]

void forEach	(	LocalInd const &	localInd,
		Func &&	func
	)

inline

Apply func to each value at given indices localInd.

First, synchronizes the values of the vector, then applies the functor to each local value associated to the local indices localInd.

[[mutable]]

Referenced by VectorFacade< T, Traits::template Vector< GB >::template Impl >::forEach().

◆ forEach() [2/2]

void forEach	(	LocalInd const &	localInd,
		Func &&	func
	)		const

inline

Apply func to each value at given indices localInd.

First, synchronizes the values of the vector, then applies the functor to each local value associated to the local indices localInd.

[[const]]

◆ gather()

void gather	(	LocalView const &	localView,
		Node const &	node,
		Buffer &	buffer
	)		const

inline

Extract values from the vector referring to the given local indices and store it into a buffer.

Collect value of indices and store them into a buffer. The buffer must be a vector-like container with buffer.resize() and buffer.begin(). The indices must be stored in an iterable container.

If the vector is not in synchronized state, collects all necessary values possibly from neighbouring processors.

[[expects: localView is bound to an element]] [[expects: node is in localView.tree()]] [[possibly neighbor-wise collective operation]]

Referenced by VectorFacade< T, Traits::template Vector< GB >::template Impl >::gather().

◆ init()

void init	(	Basis const &	basis,
		bool	clear
	)

inline

Prepare the vector for insertion of values, finish the insertion with finish().

Referenced by VectorFacade< T, Traits::template Vector< GB >::template Impl >::resize(), and VectorFacade< T, Traits::template Vector< GB >::template Impl >::resizeZero().

◆ insert()

void insert	(	Index const &	idx,
		typename Impl::value_type const &	value,
		Assign	assign = `{}`
	)

inline

Insert a single value into the matrix (add or overwrite to existing value)

Inserts or adds a value into a certain location dof (given as dof multi-index) of a vector. The insertion mode is determined by the assign functor. Use Assigner::plus_assign for adding values (default) or Assigner::assign for overwriting (setting) values. Different insertion modes can not be mixed!

Insertion must be closed with a call to finish().

[[not collective]]

Referenced by VectorFacade< T, Traits::template Vector< GB >::template Impl >::add(), and VectorFacade< T, Traits::template Vector< GB >::template Impl >::set().

◆ scatter()

void scatter	(	LocalView const &	localView,
		Node const &	node,
		NodeVector const &	localVector,
		MaskRange const &	mask,
		Assign	assign
	)

inline

Insert a block of values into the vector (add or overwrite to existing values)

Inserts or adds values into certain locations of a vector. Insertion indices are extracted from the given localView. The insertion mode is determined by the assign functor. Use Assigner::plus_assign for adding values (default) or Assigner::assign for overwriting (setting) values. Different insertion modes can not be mixed! The localVector is assumed to be a continuous memory container with a data() method to get a pointer to the beginning.

The mask models a boolean range with at least a begin() method. Must be forward iterable for at least localVector.size() elements. Does not need an end() method. See, e.g. FakeContainer.

Insertion must be closed with a call to finish(). It is not allowed to switch insertion mode before calling finish().

[[expects: localView is bound to an element]] [[expects: node is in localView.tree()]] [[not collective]]

Referenced by VectorFacade< T, Traits::template Vector< GB >::template Impl >::scatter().

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

/home/docs/checkouts/readthedocs.org/user_builds/amdis/checkouts/latest/amdis/linearalgebra/VectorFacade.hpp

Public Types

Public Member Functions

Detailed Description

template<class T, template< class > class VectorImpl> class AMDiS::VectorFacade< T, VectorImpl >

Constructor & Destructor Documentation

◆ VectorFacade()

Member Function Documentation

◆ forEach() [1/2]

◆ forEach() [2/2]

◆ gather()

◆ init()

◆ insert()

◆ scatter()

template<class T, template< class > class VectorImpl>
class AMDiS::VectorFacade< T, VectorImpl >