GMRESRSolver.h

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#ifndef included_AMP_GMRESRSolver
#define included_AMP_GMRESRSolver
 
#include "AMP/solvers/SolverStrategy.h"
#include "AMP/solvers/SolverStrategyParameters.h"
#include "AMP/utils/AMP_MPI.h"
#include "AMP/utils/Array.h"
 
#include <string>
 
namespace AMP::Solver {
 
template<typename T = double>
class GMRESRSolver : public SolverStrategy
{
public:
    GMRESRSolver();
 
    explicit GMRESRSolver( std::shared_ptr<SolverStrategyParameters> params );
 
    static std::unique_ptr<SolverStrategy>
    createSolver( std::shared_ptr<SolverStrategyParameters> params )
    {
        return std::make_unique<GMRESRSolver<T>>( params );
    }
 
    virtual ~GMRESRSolver() = default;
 
    std::string type() const override { return "GMRESRSolver"; }
 
    void apply( AMP::LinearAlgebra::Vector::const_shared_ptr f,
                AMP::LinearAlgebra::Vector::shared_ptr u ) override;
 
    void initialize( std::shared_ptr<const SolverStrategyParameters> params ) override;
 
protected:
    void getFromInput( std::shared_ptr<AMP::Database> db );
 
private:
    bool d_bRestart = false; 
 
    int d_iMaxKrylovDimension = 50; 
 
    int d_restarts; 
 
    std::string d_variant;
 
    std::vector<AMP::LinearAlgebra::Vector::shared_ptr> d_c;
 
    std::vector<AMP::LinearAlgebra::Vector::shared_ptr> d_u;
};
} // namespace AMP::Solver
 
#endif