syten::Krylov::Standard< Matrix, Vector, OrthoPolicy, SolverPolicy > Class Template Reference

The "Standard" Krylov method using the same solver and orthonormalisation policies as TensorNetworksKrylov but with the original Lanczos order. More...

#include <standard_krylov.h>

Inheritance diagram for syten::Krylov::Standard< Matrix, Vector, OrthoPolicy, SolverPolicy >:

Collaboration diagram for syten::Krylov::Standard< Matrix, Vector, OrthoPolicy, SolverPolicy >:

Public Types
using	Matrix_type = Matrix
	type of the supplied matrix More...
using	Vector_type = Vector
	type of the supplied vector More...

Public Member Functions
DenseTensor< 2, SRDef >	get_projected_matrix ()
	Constructs a DenseTensor representation of the projected matrix from the stored a and b coefficients. More...
Standard &	operator= (Standard &&)=default
	Move assignment op defaulted. More...
Standard &	operator= (Standard const &)=delete
	Copy assignment op deleted. More...
void	reinit (Vector &&initial_)
	Reinitialise the solver by passing in a new initial vector. More...
template<typename... Params>
IterativeExit	solve (IterativeConfig const &conf, Vector &result, Params &&... params)
	Solve the problem obeying configuration conf. More...
template<typename... Params>
IterativeExit	solve_no_extend (IterativeConfig const &conf, Vector &result, Params &&... params)
	Solves the problem once without extending the Krylov space. More...
	Standard ()=delete
	Default ctor deleted. More...
	Standard (Matrix const &matrix_)
	Second construction method: Pass in a matrix, you still have to call reinit() to pass in an initial vector. More...
	Standard (Matrix const &matrix_, Vector &&initial_)
	First construction method: pass in a matrix and an initial vector. More...
	Standard (Standard &&)=default
	Move ctor defaulted. More...
	Standard (Standard const &)=delete
	Copy ctor deleted. More...
bool	test_solve_now (IterativeConfig const &conf)
	Returns true if one should attempt a solution at this step, depending on the configuration. More...
template<typename... Params>
void	wrapup (Params &&... params)
	Hook to evaluate data at completion of the current Krylov space calculation. More...

Private Attributes
std::vector< SRDef >	a
	Diagonal entries of generated matrix. More...
std::vector< SRDef >	b
	Off-diagonal entries of generated matrix. More...
SRDef	initial_norm {NAN}
	Norm of initial state, NAN if uninitialised. More...
std::vector< Vector >	krylov
	Vector of generated Krylov vectors. More...
Matrix const &	matrix
	Matrix object to solve. More...
Vector	vec_stored
	temporary Krylov vector candidate. More...
bool	vec_valid {false}
	true if vec_stored contains a valid result of an operator application More...

Detailed Description

template<typename Matrix, typename Vector, typename OrthoPolicy, typename SolverPolicy>
class syten::Krylov::Standard< Matrix, Vector, OrthoPolicy, SolverPolicy >

The "Standard" Krylov method using the same solver and orthonormalisation policies as TensorNetworksKrylov but with the original Lanczos order.

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

• inc/alg/standard_krylov.h