IQNILSAcceleration.hpp

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#pragma once
 
#include <Eigen/Core>
#include <map>
#include <vector>
#include "acceleration/Acceleration.hpp"
#include "acceleration/BaseQNAcceleration.hpp"
#include "acceleration/impl/SharedPointer.hpp"
 
namespace precice::acceleration {

class IQNILSAcceleration : public BaseQNAcceleration {
public:
  IQNILSAcceleration(
      double                  initialRelaxation,
      bool                    forceInitialRelaxation,
      int                     maxIterationsUsed,
      int                     pastTimeWindowsReused,
      int                     filter,
      double                  singularityLimit,
      std::vector<int>        dataIDs,
      impl::PtrPreconditioner preconditioner,
      bool                    reducedTimeGrid);
 
  ~IQNILSAcceleration() override = default;

  void specializedIterationsConverged(const DataMap &cplData) override;
 
private:
  std::map<int, Eigen::VectorXd> _secondaryOldXTildes;

  void updateDifferenceMatrices(const DataMap &cplData) override;

  void computeQNUpdate(Eigen::VectorXd &xUpdate) override;

  void removeMatrixColumn(int columnIndex) override;

  void specializedInitializeVectorsAndPreconditioner(const DataMap &cplData) final override {};
};
} // namespace precice::acceleration