dolfin::PETScTAOSolver Class Reference

#include <PETScTAOSolver.h>

Inheritance diagram for dolfin::PETScTAOSolver:

Collaboration diagram for dolfin::PETScTAOSolver:

Public Member Functions
	PETScTAOSolver (MPI_Comm comm, std::string tao_type="default", std::string ksp_type="default", std::string pc_type="default")
	Create TAO solver.
	PETScTAOSolver (std::string tao_type="default", std::string ksp_type="default", std::string pc_type="default")
	Create TAO solver on MPI_COMM_WORLD.
virtual	~PETScTAOSolver ()
	Destructor.
std::pair< std::size_t, bool >	solve (OptimisationProblem &optimisation_problem, GenericVector &x, const GenericVector &lb, const GenericVector &ub)
std::pair< std::size_t, bool >	solve (OptimisationProblem &optimisation_problem, GenericVector &x)
MPI_Comm	mpi_comm () const
	Return the MPI communicator.
Tao	tao () const
	Return the TAO pointer.
void	init (OptimisationProblem &optimisation_problem, PETScVector &x, const PETScVector &lb, const PETScVector &ub)
void	init (OptimisationProblem &optimisation_problem, PETScVector &x)
Public Member Functions inherited from dolfin::PETScObject
	PETScObject ()
	Constructor. Ensures that PETSc has been initialised.
virtual	~PETScObject ()
	Destructor.

Static Public Member Functions
static std::vector< std::pair< std::string, std::string > >	methods ()
	Return a list of available solver methods.
static Parameters	default_parameters ()
	Default parameter values.
Static Public Member Functions inherited from dolfin::PETScObject
static void	petsc_error (int error_code, std::string filename, std::string petsc_function)
	Print error message for PETSc calls that return an error.

Public Attributes
Parameters	parameters
	Parameters for the PETSc TAO solver.

Detailed Description

This class implements methods for solving nonlinear optimisation problems via PETSc TAO solver. It supports unconstrained as well as bound-constrained minimisation problem

Member Function Documentation

void PETScTAOSolver::init	(	OptimisationProblem &	optimisation_problem,
		PETScVector &	x,
		const PETScVector &	lb,
		const PETScVector &	ub
	)

Initialise the TAO solver for a bound-constrained minimisation problem, in case the user wants to access the TAO object directly

void PETScTAOSolver::init	(	OptimisationProblem &	optimisation_problem,
		PETScVector &	x
	)

Initialise the TAO solver for an unconstrained minimisation problem, in case the user wants to access the TAO object directly

std::pair< std::size_t, bool > PETScTAOSolver::solve	(	OptimisationProblem &	optimisation_problem,
		GenericVector &	x,
		const GenericVector &	lb,
		const GenericVector &	ub
	)

Solve a nonlinear bound-constrained optimisation problem

Arguments optimisation_problem (OptimisationProblem) The nonlinear optimisation problem. x (GenericVector) The solution vector (initial guess). lb (GenericVector) The lower bound. ub (GenericVector) The upper bound.

Returns (its, converged) (std::pair<std::size_t, bool>) Pair of number of iterations, and whether iteration converged

std::pair< std::size_t, bool > PETScTAOSolver::solve	(	OptimisationProblem &	optimisation_problem,
		GenericVector &	x
	)

Solve a nonlinear unconstrained minimisation problem

Arguments optimisation_problem (OptimisationProblem) The nonlinear optimisation problem. x (GenericVector) The solution vector (initial guess).

Returns (its, converged) (std::pair<std::size_t, bool>) Pair of number of iterations, and whether iteration converged

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

• /home/fenics/shared/dolfin/nls/PETScTAOSolver.h
• /home/fenics/shared/dolfin/nls/PETScTAOSolver.cpp