PETScLUSolver.h

Note

The documentation on this page was automatically extracted from the DOLFIN C++ code and may need to be edited or expanded.

class PETScLUSolver

Parent class(es)

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.

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

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)

Sets the prefix used by PETSc when searching the options database

std::string get_options_prefix() const

Returns the prefix used by PETSc when searching the options database

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

static std::map<std::string, std::string> methods()

Return a list of available solver methods

static Parameters default_parameters()

Default parameter values

std::string parameter_type() const

Return parameter type: “krylov_solver” or “lu_solver”