sgpp::datadriven::DBMatDMS_SMW Class Reference

This class solves an (lhs + lambda*I) * alpha = b system of linear equations after the offline and online phases are done. More...

#include <DBMatDMS_SMW.hpp>

Inheritance diagram for sgpp::datadriven::DBMatDMS_SMW:

Public Member Functions
	DBMatDMS_SMW ()=default
	Constructor.
void	solve (sgpp::base::DataMatrix &A_inv, sgpp::base::DataMatrix &B, sgpp::base::DataVector &b, sgpp::base::DataVector &alpha)
	Solves the system after the corresponding offline and online objects are done with decomposing and adaptivity, resp.
void	solveParallel (DataMatrixDistributed &A_inv, DataMatrixDistributed &B, DataVectorDistributed &b, DataVectorDistributed &alpha)
	Parallel/Distributed version of solve.
Public Member Functions inherited from sgpp::datadriven::DBMatDecompMatrixSolver
	DBMatDecompMatrixSolver ()
Public Member Functions inherited from sgpp::solver::SGSolver
double	getEpsilon ()
	gets the the epsilon, that is used in the SGSolver
size_t	getNumberIterations ()
	function that returns the number of needed solve steps
double	getResiduum ()
	function the returns the residuum (current or final), error of the solver
void	setEpsilon (double eps)
	resets the epsilon, that is used in the SGSolver
void	setMaxIterations (size_t nIterations)
	resets the number of maximum iterations
	SGSolver (size_t nMaximumIterations, double epsilon)
	Std-Constructor.
virtual	~SGSolver ()
	Std-Destructor.

Additional Inherited Members
Protected Attributes inherited from sgpp::solver::SGSolver
double	myEpsilon
	epsilon needed in the, e.g. final error in the iterative solver, or a timestep
size_t	nIterations
	Number of Iterations needed for the solve.
size_t	nMaxIterations
	Number of maximum iterations for cg.
double	residuum
	residuum

Detailed Description

This class solves an (lhs + lambda*I) * alpha = b system of linear equations after the offline and online phases are done.

Constructor & Destructor Documentation

DBMatDMS_SMW()

sgpp::datadriven::DBMatDMS_SMW::DBMatDMS_SMW ( )

default

Constructor.

Member Function Documentation

solve()

void sgpp::datadriven::DBMatDMS_SMW::solve	(	sgpp::base::DataMatrix &	A_inv,
		sgpp::base::DataMatrix &	B,
		sgpp::base::DataVector &	b,
		sgpp::base::DataVector &	alpha
	)

Solves the system after the corresponding offline and online objects are done with decomposing and adaptivity, resp.

The computation done: alpha = A_inv*b + B*b

Parameters

A_inv	Inverse of the original lhs matrix
B	Storage of the online objects refined/coarsened points
b	The right side of the system
alpha	The solution vector of the system, computed values go there

References alpha, sgpp::base::DataMatrix::getNcols(), sgpp::base::DataMatrix::getNrows(), sgpp::base::DataMatrix::getPointer(), sgpp::base::DataVector::getPointer(), and sgpp::base::DataVector::getSize().

solveParallel()

void sgpp::datadriven::DBMatDMS_SMW::solveParallel	(	DataMatrixDistributed &	A_inv,
		DataMatrixDistributed &	B,
		DataVectorDistributed &	b,
		DataVectorDistributed &	alpha
	)

Parallel/Distributed version of solve.

Parameters

A_inv	Inverse of a tridiagonal matrix
B	Storage of the online objects refined/coarsened points
b	The right side of the system
alpha	The solution vector of the system, computed values go there

References alpha, sgpp::datadriven::DataMatrixDistributed::getGlobalCols(), sgpp::datadriven::DataMatrixDistributed::getGlobalRows(), and sgpp::datadriven::DataMatrixDistributed::mult().

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

• datadriven/src/sgpp/datadriven/algorithm/DBMatDMS_SMW.hpp
• datadriven/src/sgpp/datadriven/algorithm/DBMatDMS_SMW.cpp