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non_linear_solver_petsc.hh
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/**
* @file non_linear_solver_petsc.hh
*
* @author Nicolas Richart
*
* @date creation Tue Jan 01 2019
*
* @brief A Documented file.
*
*
* Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "non_linear_solver.hh"
/* -------------------------------------------------------------------------- */
#include <petscsnes.h>
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_NON_LINEAR_SOLVER_PETSC_HH_
#define AKANTU_NON_LINEAR_SOLVER_PETSC_HH_
namespace akantu {
class DOFManagerPETSc;
class NonLinearSolverPETScCallback;
class SolverVectorPETSc;
} // namespace akantu
namespace akantu {
class NonLinearSolverPETSc : public NonLinearSolver {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
NonLinearSolverPETSc(DOFManagerPETSc & dof_manager,
const NonLinearSolverType & non_linear_solver_type,
const ID & id = "non_linear_solver_petsc");
~NonLinearSolverPETSc() override;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// solve the system described by the jacobian matrix, and rhs contained in
/// the dof manager
void solve(SolverCallback & callback) override;
/// parse the arguments from the input file
void parseSection(const ParserSection & section) override;
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
static PetscErrorCode FormFunction(SNES snes, Vec dx, Vec f, void * ctx);
static PetscErrorCode FormJacobian(SNES snes, Vec dx, Mat J, Mat P,
void * ctx);
void set_param(const ID & param, const std::string & value) override;
DOFManagerPETSc & dof_manager;
/// PETSc non linear solver
SNES snes;
SNESConvergedReason reason;
SolverCallback * callback{nullptr};
std::unique_ptr<SolverVectorPETSc> x;
std::unique_ptr<NonLinearSolverPETScCallback> ctx;
Int n_iter{0};
};
namespace debug {
class SNESNotConvergedException : public NLSNotConvergedException {
public:
SNESNotConvergedException(SNESConvergedReason reason, UInt niter,
Real error, Real absolute_tolerance,
Real relative_tolerance, UInt max_iterations)
: NLSNotConvergedException(relative_tolerance, niter, error),
reason(reason), absolute_tolerance(absolute_tolerance),
max_iterations(max_iterations) {}
SNESConvergedReason reason;
Real absolute_tolerance;
UInt max_iterations;
};
} // namespace debug
} // namespace akantu
#endif /* AKANTU_NON_LINEAR_SOLVER_PETSC_HH_ */

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