dolfin::PETScLUSolver Class Reference

#include <PETScLUSolver.h>

Inheritance diagram for dolfin::PETScLUSolver:

Collaboration diagram for dolfin::PETScLUSolver:

Public Member Functions
	PETScLUSolver (MPI_Comm comm, std::string method="default")
	Constructor.
	PETScLUSolver (std::string method="default")
	Constructor.
	PETScLUSolver (MPI_Comm comm, std::shared_ptr< const PETScMatrix > A, std::string method="default")
	Constructor.
	PETScLUSolver (std::shared_ptr< const PETScMatrix > A, std::string method="default")
	Constructor.
	~PETScLUSolver ()
	Destructor.
void	set_operator (std::shared_ptr< const GenericLinearOperator > A)
	Set operator (matrix)
void	set_operator (const PETScMatrix &A)
	Set operator (matrix)
std::size_t	solve (GenericVector &x, const GenericVector &b)
	Solve linear system Ax = b.
std::size_t	solve (GenericVector &x, const GenericVector &b, bool transpose)
	Solve linear system Ax = b (A^t x = b if transpose is true)
std::size_t	solve (const GenericLinearOperator &A, GenericVector &x, const GenericVector &b)
	Solve linear system Ax = b.
std::size_t	solve (const PETScMatrix &A, PETScVector &x, const PETScVector &b)
	Solve linear system Ax = b.
void	set_options_prefix (std::string options_prefix)
std::string	get_options_prefix () const
void	set_from_options () const
	Set options from the PETSc options database.
MPI_Comm	mpi_comm () const
	Returns the MPI communicator.
std::string	str (bool verbose) const
	Return informal string representation (pretty-print)
KSP	ksp () const
	Return PETSc KSP pointer.
std::string	parameter_type () const
	Return parameter type: "krylov_solver" or "lu_solver".
Public Member Functions inherited from dolfin::GenericLinearSolver
virtual void	set_operators (std::shared_ptr< const GenericLinearOperator > A, std::shared_ptr< const GenericLinearOperator > P)
	Set operator (matrix) and preconditioner matrix.
virtual void	update_parameters (const Parameters &parameters)
	Update solver parameters (useful for LinearSolver wrapper)
Public Member Functions inherited from dolfin::Variable
	Variable ()
	Create unnamed variable.
	Variable (const std::string name, const std::string label)
	Create variable with given name and label.
	Variable (const Variable &variable)
	Copy constructor.
virtual	~Variable ()
	Destructor.
const Variable &	operator= (const Variable &variable)
	Assignment operator.
void	rename (const std::string name, const std::string label)
	Rename variable.
std::string	name () const
	Return name.
std::string	label () const
	Return label (description)
std::size_t	id () const

Static Public Member Functions
static std::map< std::string, std::string >	methods ()
	Return a list of available solver methods.
static Parameters	default_parameters ()
	Default parameter values.

Friends
class	PETScSNESSolver
class	PETScTAOSolver

Additional Inherited Members
Public Attributes inherited from dolfin::Variable
Parameters	parameters
	Parameters.
Static Protected Member Functions inherited from dolfin::GenericLinearSolver
static const GenericMatrix &	require_matrix (const GenericLinearOperator &A)
static std::shared_ptr< const GenericMatrix >	require_matrix (std::shared_ptr< const GenericLinearOperator > A)

Detailed Description

This class implements the direct solution (LU factorization) for linear systems of the form Ax = b. It is a wrapper for the LU solver of PETSc.

Member Function Documentation

get_options_prefix()

std::string PETScLUSolver::get_options_prefix

(

)

const

Returns the prefix used by PETSc when searching the options database

set_options_prefix()

void PETScLUSolver::set_options_prefix

(

std::string

options_prefix

)

Sets the prefix used by PETSc when searching the options database

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

• /home/fenics/shared/dolfin/dolfin/la/PETScLUSolver.h
• /home/fenics/shared/dolfin/dolfin/la/PETScLUSolver.cpp