DOLFIN-X
DOLFIN-X C++ interface
Public Member Functions | List of all members
dolfinx::la::PETScKrylovSolver Class Reference

This class implements Krylov methods for linear systems of the form Ax = b. It is a wrapper for the Krylov solvers of PETSc. More...

#include <PETScKrylovSolver.h>

Public Member Functions

 PETScKrylovSolver (MPI_Comm comm)
 Create Krylov solver for a particular method and named preconditioner.
 
 PETScKrylovSolver (KSP ksp, bool inc_ref_count=true)
 Create solver wrapper of a PETSc KSP object.
 
virtual ~PETScKrylovSolver ()
 Destructor.
 
void set_operator (const Mat A)
 Set operator (Mat)
 
void set_operators (const Mat A, const Mat P)
 Set operator and preconditioner matrix (Mat)
 
int solve (Vec x, const Vec b, bool transpose=false)
 Solve linear system Ax = b and return number of iterations (A^t x = b if transpose is true)
 
void set_options_prefix (std::string options_prefix)
 Sets the prefix used by PETSc when searching the PETSc options database.
 
std::string get_options_prefix () const
 Returns the prefix used by PETSc when searching the PETSc options database.
 
void set_from_options () const
 Set options from PETSc options database.
 
KSP ksp () const
 Return PETSc KSP pointer.
 
void set_dm (DM dm)
 Set the DM.
 
void set_dm_active (bool val)
 Activate/deactivate DM.
 

Detailed Description

This class implements Krylov methods for linear systems of the form Ax = b. It is a wrapper for the Krylov solvers of PETSc.


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