MueLu  Version of the Day
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
Public Types | Public Member Functions | Private Attributes | List of all members
MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure > Class Template Reference

Classical dropping criterion. More...

#include <MueLu_ClassicalDropping.hpp>

Public Types

using matrix_type = Xpetra::Matrix< Scalar, LocalOrdinal, GlobalOrdinal, Node >
 
using diag_vec_type = Xpetra::MultiVector< 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_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 mATS = Kokkos::ArithTraits< magnitudeType >
 
using boundary_nodes_view = Kokkos::View< const bool *, memory_space >
 

Public Member Functions

 DropFunctor (matrix_type &A_, magnitudeType threshold, results_view &results_)
 
KOKKOS_FORCEINLINE_FUNCTION void operator() (const local_ordinal_type rlid) const
 

Private Attributes

local_matrix_type A
 
Teuchos::RCP< diag_vec_type > diagVec
 
diag_view_type diag
 
magnitudeType eps
 
results_view results
 

Detailed Description

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
class MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >

Classical dropping criterion.

Depending on the value of measure evaluates the dropping criterion

SmoothedAggregationMeasure

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

SignedRugeStuebenMeasure

\[ \frac{-\operatorname{Re}A_{ij}}{| max_j -A_{ij}|} \le \theta \]

SignedSmoothedAggregationMeasure

\[ \frac{-\operatorname{sign}(A_{ij}) |A_{ij}|^2}{|A_{ii}| |A_{jj}|} \le \theta^2 \]

Definition at line 46 of file MueLu_ClassicalDropping.hpp.

Member Typedef Documentation

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::matrix_type = Xpetra::Matrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>

Definition at line 48 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::diag_vec_type = Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>

Definition at line 49 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::local_matrix_type = typename matrix_type::local_matrix_type

Definition at line 50 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::scalar_type = typename local_matrix_type::value_type

Definition at line 51 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::local_ordinal_type = typename local_matrix_type::ordinal_type

Definition at line 52 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::memory_space = typename local_matrix_type::memory_space

Definition at line 53 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::diag_view_type = typename Kokkos::DualView<const scalar_type*, Kokkos::LayoutStride, typename Node::device_type, Kokkos::MemoryUnmanaged>::t_dev

Definition at line 54 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::results_view = Kokkos::View<DecisionType*, memory_space>

Definition at line 56 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::ATS = Kokkos::ArithTraits<scalar_type>

Definition at line 58 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::magnitudeType = typename ATS::magnitudeType

Definition at line 59 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::mATS = Kokkos::ArithTraits<magnitudeType>

Definition at line 60 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
using MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::boundary_nodes_view = Kokkos::View<const bool*, memory_space>

Definition at line 61 of file MueLu_ClassicalDropping.hpp.

Constructor & Destructor Documentation

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::DropFunctor ( matrix_type &  A_,
magnitudeType  threshold,
results_view &  results_ 
)
inline

Definition at line 71 of file MueLu_ClassicalDropping.hpp.

Member Function Documentation

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
KOKKOS_FORCEINLINE_FUNCTION void MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::operator() ( const local_ordinal_type  rlid) const
inline

Definition at line 88 of file MueLu_ClassicalDropping.hpp.

Member Data Documentation

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
local_matrix_type MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::A
private

Definition at line 64 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
Teuchos::RCP<diag_vec_type> MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::diagVec
private

Definition at line 65 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
diag_view_type MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::diag
private

Definition at line 66 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
magnitudeType MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::eps
private

Definition at line 67 of file MueLu_ClassicalDropping.hpp.

template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, Misc::StrengthMeasure measure>
results_view MueLu::ClassicalDropping::DropFunctor< Scalar, LocalOrdinal, GlobalOrdinal, Node, measure >::results
private

Definition at line 68 of file MueLu_ClassicalDropping.hpp.

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