Kratos::DeflationUtils Class Reference

#include <deflation_utils.h>

Collaboration diagram for Kratos::DeflationUtils:

Public Types
Type Definitions
typedef boost::numeric::ublas::compressed_matrix< double >	SparseMatrixType
typedef boost::numeric::ublas::vector< double >	SparseVectorType

Operators
Constructor. Destructor.
void	VisualizeAggregates (ModelPart::NodesContainerType &rNodes, Variable< double > &rVariable, const int max_reduced_size)
static void	ConstructW (const std::size_t max_reduced_size, SparseMatrixType &rA, std::vector< int > &w, SparseMatrixType &deflatedA)
static void	ConstructW (const int max_reduced_size, SparseMatrixType &rA, std::vector< int > &w, SparseMatrixType &deflatedA, const std::size_t block_size)
	block version of ConstructW. To be used when multiple DOFS are associated to the same node. More...
static void	ApplyW (const std::vector< int > &w, const SparseVectorType &x, SparseVectorType &y)
static void	ApplyWtranspose (const std::vector< int > &w, const SparseVectorType &x, SparseVectorType &y)
static void	FillDeflatedMatrix (const SparseMatrixType &rA, std::vector< int > &w, SparseMatrixType &Ah)

Detailed Description

This class defines utility for aggregation of node clusters to be used in deflated solvers. Detail class definition.

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Member Typedef Documentation

SparseMatrixType

typedef boost::numeric::ublas::compressed_matrix<double> Kratos::DeflationUtils::SparseMatrixType

SparseVectorType

typedef boost::numeric::ublas::vector<double> Kratos::DeflationUtils::SparseVectorType

Member Function Documentation

ApplyW()

static void Kratos::DeflationUtils::ApplyW ( const std::vector< int > &  w, const SparseVectorType &  x, SparseVectorType &  y  )

inlinestatic

ApplyWtranspose()

static void Kratos::DeflationUtils::ApplyWtranspose ( const std::vector< int > &  w, const SparseVectorType &  x, SparseVectorType &  y  )

inlinestatic

ConstructW() [1/2]

static void Kratos::DeflationUtils::ConstructW ( const int  max_reduced_size, SparseMatrixType &  rA, std::vector< int > &  w, SparseMatrixType &  deflatedA, const std::size_t  block_size  )

inlinestatic

block version of ConstructW. To be used when multiple DOFS are associated to the same node.

ConstructW() [2/2]

static void Kratos::DeflationUtils::ConstructW ( const std::size_t  max_reduced_size, SparseMatrixType &  rA, std::vector< int > &  w, SparseMatrixType &  deflatedA  )

inlinestatic

this function constructs the structure of a smaller matrix using a technique taken from MIS aggregation the algorythm is taken from the pyamg lib

FillDeflatedMatrix()

static void Kratos::DeflationUtils::FillDeflatedMatrix ( const SparseMatrixType &  rA, std::vector< int > &  w, SparseMatrixType &  Ah  )

inlinestatic

VisualizeAggregates()

void Kratos::DeflationUtils::VisualizeAggregates ( ModelPart::NodesContainerType &  rNodes, Variable< double > &  rVariable, const int  max_reduced_size  )

inline

visualize aggregates. This function assumes that neighbours are calculated and builds the connectivity matrix then writes it to a nodal variable so that it can be used for visualizing it.

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

• /home/runner/work/Documentation/Documentation/master/kratos/utilities/deflation_utils.h