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138 lines
3.9 KiB
C++
138 lines
3.9 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/modules/SolverModules.h
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Copyright (C) 2016
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Author: Guido Cossu <guido.cossu@ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution
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directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef SOLVER_MODULES_H
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#define SOLVER_MODULES_H
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namespace Grid {
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//////////////////////////////////////////////
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// Operator Functions (Solvers)
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//////////////////////////////////////////////
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template <template <typename> class SolverType, class Field, class SPar>
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class SolverModule
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: public Parametrized<SPar>,
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public HMCModuleBase<OperatorFunction<Field> > {
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public:
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typedef HMCModuleBase< OperatorFunction<Field> > Base;
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typedef typename Base::Product Product;
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std::unique_ptr< SolverType<Field> > SolverPtr;
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SolverModule(SPar Par) : Parametrized<SPar>(Par) {}
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template <class ReaderClass>
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SolverModule(Reader<ReaderClass>& Reader) : Parametrized<SPar>(Reader){};
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virtual void print_parameters(){
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std::cout << this->Par_ << std::endl;
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}
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Product* getPtr() {
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if (!SolverPtr) initialize();
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return SolverPtr.get();
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}
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private:
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virtual void initialize() = 0;
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};
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// Factory
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template <char const *str, class Field, class ReaderClass >
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class HMC_SolverModuleFactory
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: public Factory < HMCModuleBase<OperatorFunction<Field> > , Reader<ReaderClass> > {
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public:
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// use SINGLETON FUNCTOR MACRO HERE
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typedef Reader<ReaderClass> TheReader;
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HMC_SolverModuleFactory(const HMC_SolverModuleFactory& e) = delete;
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void operator=(const HMC_SolverModuleFactory& e) = delete;
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static HMC_SolverModuleFactory& getInstance(void) {
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static HMC_SolverModuleFactory e;
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return e;
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}
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private:
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HMC_SolverModuleFactory(void) = default;
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std::string obj_type() const {
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return std::string(str);
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}
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};
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class SolverParameters : Serializable {
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(SolverParameters,
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RealD, tolerance,
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RealD, max_iterations);
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// add error on no convergence?
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};
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class SolverObjName: Serializable {
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public:
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GRID_SERIALIZABLE_CLASS_MEMBERS(SolverObjName,
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std::string, name,
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SolverParameters, parameters);
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};
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template <class Field >
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class ConjugateGradientModule: public SolverModule<ConjugateGradient, Field, SolverParameters> {
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typedef SolverModule<ConjugateGradient, Field, SolverParameters> SolverBase;
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using SolverBase::SolverBase; // for constructors
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// acquire resource
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virtual void initialize(){
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this->SolverPtr.reset(new ConjugateGradient<Field>(this->Par_.tolerance, this->Par_.max_iterations, true));
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}
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};
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template <class Field >
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class ConjugateResidualModule: public SolverModule<ConjugateResidual, Field, SolverParameters> {
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typedef SolverModule<ConjugateResidual, Field, SolverParameters> SolverBase;
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using SolverBase::SolverBase; // for constructors
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// acquire resource
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virtual void initialize(){
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this->SolverPtr.reset(new ConjugateResidual<Field>(this->Par_.tolerance, this->Par_.max_iterations));
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}
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};
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extern char solver_string[];
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} // Grid
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#endif //SOLVER_MODULES_H
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