LinAlgebra Class Reference

#include <linear_algebra.h>

Public Member Functions
	LinAlgebra (Settings &s, Mesh::mesh &my_msh)
void	prepareElements (Eigen::Vector3d const &Hext, timing const &t_prm)
void	prepareElements (double const A_Hext, timing const &t_prm)
void	buildInitGuess (Eigen::Ref< Eigen::VectorXd > G) const
int	solver (timing const &t_prm)
void	set_DW_vz (double vz)
double	get_v_max (void)
void	setExtSpaceField (Settings &s)
void	base_projection ()

Private Attributes
Nodes::index	idx_dir
const int	NOD
const int	MAXITER
const double	TOL
double	ILU_tol
double	ILU_fill_factor
const int	verbose
const std::vector< Tetra::prm > &	prmTetra
const std::vector< Facette::prm > &	prmFacette
Mesh::mesh *	refMsh
double	DW_vz
double	v_max
std::vector< Eigen::Matrix< double, Nodes::DIM, Tetra::NPI > >	extSpaceField

Detailed Description

convenient class to grab altogether some part of the calculations involved using eigen BiCGSTAB solver at each timestep. The solver is handled by solver method, and is using Eigen::SparseMatrix, Row major matrix. This matrix is prepared in 'batch mode', using a vector of triplets (also called COO write sparse matrix).

Constructor & Destructor Documentation

LinAlgebra()

LinAlgebra::LinAlgebra ( Settings &  s, Mesh::mesh &  my_msh  )

inline

constructor

Parameters

[in]	s
[in]	my_msh

Member Function Documentation

base_projection()

void LinAlgebra::base_projection

(

)

computes local vector basis {ep,eq} in the tangeant plane for projection on the elements

buildInitGuess()

void LinAlgebra::buildInitGuess

(

Eigen::Ref< Eigen::VectorXd >

G

)

const

build init guess for bicgstab solver

get_v_max()

double LinAlgebra::get_v_max ( void  )

inline

getter for v_max

prepareElements() [1/2]

void LinAlgebra::prepareElements	(	double const	A_Hext,
		timing const &	t_prm
	)

computes inner data structures of tetraedrons and triangular facettes (K matrices and L vectors)

Parameters

[in]	A_Hext	amplitude applied field
[in]	t_prm

prepareElements() [2/2]

void LinAlgebra::prepareElements	(	Eigen::Vector3d const &	Hext,
		timing const &	t_prm
	)

computes inner data structures of tetraedrons and triangular facettes (K matrices and L vectors)

Parameters

[in]	Hext	applied field
[in]	t_prm

set_DW_vz()

void LinAlgebra::set_DW_vz ( double  vz )

inline

setter for DW_dz

Parameters

[in]

vz

setExtSpaceField()

void LinAlgebra::setExtSpaceField

(

Settings &

s

)

when external applied field is of field_type R4toR3 values of field_space are stored in spaceField

Parameters

[in]

s

solver()

int LinAlgebra::solver

(

timing const &

t_prm

)

solver, uses eigen stabilized biconjugate gradient solver (bicgstab) with ILU preconditionner, sparse matrix and vector are filled with multiThreading. Sparse matrix is row major.

Parameters

[in]

t_prm

Member Data Documentation

DW_vz

double LinAlgebra::DW_vz

private

speed of the domain wall

extSpaceField

std::vector< Eigen::Matrix<double,Nodes::DIM,Tetra::NPI> > LinAlgebra::extSpaceField

private

external applied space field, values on gauss points, size is number of tetraedrons

idx_dir

Nodes::index LinAlgebra::idx_dir

private

recentering index direction if any

ILU_fill_factor

double LinAlgebra::ILU_fill_factor

private

ILU preconditionner filling factor

ILU_tol

double LinAlgebra::ILU_tol

private

ILU preconditionner tolerance

MAXITER

const int LinAlgebra::MAXITER

private

maximum number of iteration for bicgstab

NOD

const int LinAlgebra::NOD

private

number of nodes, also an offset for filling sparseMatrix, initialized by constructor

prmFacette

const std::vector<Facette::prm>& LinAlgebra::prmFacette

private

material parameters of the facettes

prmTetra

const std::vector<Tetra::prm>& LinAlgebra::prmTetra

private

material parameters of the tetrahedrons

refMsh

Mesh::mesh* LinAlgebra::refMsh

private

direct access to the mesh

TOL

const double LinAlgebra::TOL

private

solver tolerance

v_max

double LinAlgebra::v_max

private

maximum speed of the magnetization in the whole physical object

verbose

const int LinAlgebra::verbose

private

verbosity

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

• linear_algebra.h
• linear_algebra.cpp
• solver.cpp