Drops entries the unscaled distance Laplacian. More...

#include <MueLu_DistanceLaplacianDropping.hpp>

Public Member Functions
	DropFunctor (matrix_type &A_, magnitudeType threshold, DistanceFunctorType &dist2_, results_view &results_)
KOKKOS_FORCEINLINE_FUNCTION void	operator() (local_ordinal_type rlid) const

Private Types
using	matrix_type = Xpetra::Matrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>
using	local_matrix_type = typename matrix_type::local_matrix_type
using	scalar_type = typename local_matrix_type::value_type
using	local_ordinal_type = typename local_matrix_type::ordinal_type
using	memory_space = typename local_matrix_type::memory_space
using	diag_vec_type = Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>
using	diag_view_type = typename Kokkos::DualView<const scalar_type*, Kokkos::LayoutStride, typename Node::device_type, Kokkos::MemoryUnmanaged>::t_dev
using	results_view = Kokkos::View<DecisionType*, memory_space>
using	ATS = Kokkos::ArithTraits<scalar_type>
using	magnitudeType = typename ATS::magnitudeType
using	boundary_nodes_view = Kokkos::View<const bool*, memory_space>

Private Attributes
local_matrix_type	A
magnitudeType	eps
Teuchos::RCP< diag_vec_type >	diagVec
diag_view_type	diag
DistanceFunctorType	dist2
results_view	results
const scalar_type	one = ATS::one()

Detailed Description

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>
class MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >

Drops entries the unscaled distance Laplacian.

Evaluates the dropping criterion

\[\frac{|d_{ij}|^2}{|d_{ii}| |d_{jj}|} \le \theta^2 \]

where \(d_{ij}\) is a distance metric.

Definition at line 355 of file MueLu_DistanceLaplacianDropping.hpp.

Member Typedef Documentation

◆ matrix_type

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::matrix_type = Xpetra::Matrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>

private

Definition at line 357 of file MueLu_DistanceLaplacianDropping.hpp.

◆ local_matrix_type

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::local_matrix_type = typename matrix_type::local_matrix_type

private

Definition at line 358 of file MueLu_DistanceLaplacianDropping.hpp.

◆ scalar_type

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::scalar_type = typename local_matrix_type::value_type

private

Definition at line 359 of file MueLu_DistanceLaplacianDropping.hpp.

◆ local_ordinal_type

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::local_ordinal_type = typename local_matrix_type::ordinal_type

private

Definition at line 360 of file MueLu_DistanceLaplacianDropping.hpp.

◆ memory_space

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::memory_space = typename local_matrix_type::memory_space

private

Definition at line 361 of file MueLu_DistanceLaplacianDropping.hpp.

◆ diag_vec_type

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::diag_vec_type = Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>

private

Definition at line 362 of file MueLu_DistanceLaplacianDropping.hpp.

◆ diag_view_type

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::diag_view_type = typename Kokkos::DualView<const scalar_type*, Kokkos::LayoutStride, typename Node::device_type, Kokkos::MemoryUnmanaged>::t_dev

private

Definition at line 363 of file MueLu_DistanceLaplacianDropping.hpp.

◆ results_view

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::results_view = Kokkos::View<DecisionType*, memory_space>

private

Definition at line 365 of file MueLu_DistanceLaplacianDropping.hpp.

◆ ATS

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::ATS = Kokkos::ArithTraits<scalar_type>

private

Definition at line 367 of file MueLu_DistanceLaplacianDropping.hpp.

◆ magnitudeType

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::magnitudeType = typename ATS::magnitudeType

private

Definition at line 368 of file MueLu_DistanceLaplacianDropping.hpp.

◆ boundary_nodes_view

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

using MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::boundary_nodes_view = Kokkos::View<const bool*, memory_space>

private

Definition at line 369 of file MueLu_DistanceLaplacianDropping.hpp.

Constructor & Destructor Documentation

◆ DropFunctor()

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::DropFunctor	(	matrix_type &	A_,
		magnitudeType	threshold,
		DistanceFunctorType &	dist2_,
		results_view &	results_ )

inline

Definition at line 380 of file MueLu_DistanceLaplacianDropping.hpp.

Member Function Documentation

◆ operator()()

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class DistanceFunctorType>

KOKKOS_FORCEINLINE_FUNCTION void MueLu::DistanceLaplacian::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, DistanceFunctorType >::operator() ( local_ordinal_type rlid ) const