46#ifndef MUELU_NOTAYAGGREGATIONFACTORY_DECL_HPP_
47#define MUELU_NOTAYAGGREGATIONFACTORY_DECL_HPP_
52#include <Xpetra_Map_fwd.hpp>
53#include <Xpetra_Vector_fwd.hpp>
54#include <Xpetra_VectorFactory_fwd.hpp>
55#include <Xpetra_MapFactory_fwd.hpp>
58#include <Xpetra_Matrix.hpp>
77#undef MUELU_NOTAYAGGREGATIONFACTORY_SHORT
86 using magnitude_type =
typename Teuchos::ScalarTraits<Scalar>::magnitudeType;
88 using row_sum_type =
typename Kokkos::View<impl_scalar_type*, Kokkos::LayoutLeft, device_type>;
125 const RCP<const Matrix>& A,
126 const ArrayView<const LO>& orderingVector,
129 std::vector<unsigned>& aggStat,
130 LO& numNonAggregatedNodes,
131 LO& numDirichletNodes)
const;
135 const RCP<const Matrix>& A,
136 const Teuchos::ArrayView<const LO> & orderingVector,
140 std::vector<LO>& localAggStat,
141 Array<LO>& localVertex2AggID,
142 LO& numLocalAggregates,
143 LO& numNonAggregatedNodes)
const;
150 const LO numDirichletNodes,
151 const LO numLocalAggregates,
152 const ArrayView<const LO>& localVertex2AggID,
162 const std::string matrixLabel,
173#define MUELU_NOTAYAGGREGATIONFACTORY_SHORT
MueLu::DefaultLocalOrdinal LocalOrdinal
MueLu::DefaultScalar Scalar
MueLu::DefaultGlobalOrdinal GlobalOrdinal
Container class for aggregation information.
Class that holds all level-specific information.
typename Kokkos::View< impl_scalar_type *, Kokkos::LayoutLeft, device_type > row_sum_type
void BuildInitialAggregates(const Teuchos::ParameterList ¶ms, const RCP< const Matrix > &A, const ArrayView< const LO > &orderingVector, const magnitude_type kappa, Aggregates &aggregates, std::vector< unsigned > &aggStat, LO &numNonAggregatedNodes, LO &numDirichletNodes) const
Initial aggregation phase.
virtual ~NotayAggregationFactory()
Destructor.
void BuildFurtherAggregates(const Teuchos::ParameterList ¶ms, const RCP< const Matrix > &A, const Teuchos::ArrayView< const LO > &orderingVector, const local_matrix_type &coarseA, const magnitude_type kappa, const row_sum_type &rowSum, std::vector< LO > &localAggStat, Array< LO > &localVertex2AggID, LO &numLocalAggregates, LO &numNonAggregatedNodes) const
Further aggregation phase increases coarsening rate by a factor of ~2 per iteration.
typename Teuchos::ScalarTraits< Scalar >::magnitudeType magnitude_type
void BuildIntermediateProlongator(const LO numRows, const LO numDirichletNodes, const LO numLocalAggregates, const ArrayView< const LO > &localVertex2AggID, local_matrix_type &intermediateP) const
Construction of a local prolongator with values equal to 1.0.
void BuildCoarseLocalMatrix(const local_matrix_type &intermediateP, local_matrix_type &coarseA) const
Implementation of a local Galerkin projection called inside BuildFurtherAggregates.
void BuildOnRankLocalMatrix(const local_matrix_type &localA, local_matrix_type &onRankA) const
typename device_type::execution_space execution_space
typename local_matrix_type::device_type device_type
typename Matrix::local_matrix_type local_matrix_type
typename Kokkos::ArithTraits< Scalar >::val_type impl_scalar_type
RCP< const ParameterList > GetValidParameterList() const
Return a const parameter list of valid parameters that setParameterList() will accept.
NotayAggregationFactory()
Constructor.
void DeclareInput(Level ¤tLevel) const
Input.
void Build(Level ¤tLevel) const
Build aggregates.
void localSpGEMM(const local_matrix_type &A, const local_matrix_type &B, const std::string matrixLabel, local_matrix_type &C) const
Wrapper for kokkos-kernels' spgemm that takes in CrsMatrix.
Base class for factories that use one level (currentLevel).
Namespace for MueLu classes and methods.
KokkosClassic::DefaultNode::DefaultNodeType DefaultNode
Tpetra::Details::DefaultTypes::scalar_type DefaultScalar