CFEOverlapInverseOpContextGLL.h

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 * Copyright (c) 2021.                                                        *
 * The Regents of the University of Michigan and DFT-EFE developers.          *
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 * This file is part of the DFT-EFE code.                                     *
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 *   See the Lesser GNU General Public License for more details.              *
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/*
 * @author Avirup Sircar
 */
 
#ifndef dftefeCFEOverlapInverseOpContextGLL_h
#define dftefeCFEOverlapInverseOpContextGLL_h
 
#include <utils/TypeConfig.h>
#include <utils/MemorySpaceType.h>
#include <linearAlgebra/LinearAlgebraTypes.h>
#include <linearAlgebra/OperatorContext.h>
#include <linearAlgebra/CGLinearSolver.h>
#include <linearAlgebra/LinearAlgebraTypes.h>
#include <linearAlgebra/LinearSolverFunction.h>
#include <linearAlgebra/PreconditionerNone.h>
#include <basis/FEBasisManager.h>
#include <basis/FEBasisDataStorage.h>
#include <basis/CFEOverlapOperatorContext.h>
#include <quadrature/QuadratureAttributes.h>
#include <basis/FECellWiseDataOperations.h>
#include <vector>
#include <memory>
 
namespace dftefe
{
  namespace basis
  {
    template <typename ValueTypeOperator,
              typename ValueTypeOperand,
              utils::MemorySpace memorySpace,
              size_type          dim>
    class CFEOverlapInverseOpContextGLL
      : public linearAlgebra::
          OperatorContext<ValueTypeOperator, ValueTypeOperand, memorySpace>
    {
    public:
      using ValueType =
        linearAlgebra::blasLapack::scalar_type<ValueTypeOperator,
                                               ValueTypeOperand>;
 
    public:
      CFEOverlapInverseOpContextGLL(
        const basis::
          FEBasisManager<ValueTypeOperand, ValueTypeOperator, memorySpace, dim>
            &feBasisManager,
        const FEBasisDataStorage<ValueTypeOperator, memorySpace>
          &classicalGLLBasisDataStorage,
        std::shared_ptr<linearAlgebra::LinAlgOpContext<memorySpace>>
          linAlgOpContext);
 
      // --------------DEBUG ONLY (direct inversion using CG solve)---------
      CFEOverlapInverseOpContextGLL(
        const basis::
          FEBasisManager<ValueTypeOperand, ValueTypeOperator, memorySpace, dim>
            &                                 feBasisManager,
        const CFEOverlapOperatorContext<ValueTypeOperator,
                                        ValueTypeOperand,
                                        memorySpace,
                                        dim> &MContext,
        std::shared_ptr<linearAlgebra::LinAlgOpContext<memorySpace>>
             linAlgOpContext,
        bool isCGSolved = true);
 
      void
      apply(
        linearAlgebra::MultiVector<ValueTypeOperand, memorySpace> &X,
        linearAlgebra::MultiVector<ValueType, memorySpace> &Y) const override;
 
    private:
      const FEBasisManager<ValueTypeOperand,
                           ValueTypeOperator,
                           memorySpace,
                           dim> *                           d_feBasisManager;
      linearAlgebra::Vector<ValueTypeOperator, memorySpace> d_diagonalInv;
      const std::string                                     d_constraints;
 
      bool d_isCGSolved;
      std::shared_ptr<linearAlgebra::LinearSolverFunction<ValueTypeOperator,
                                                          ValueTypeOperand,
                                                          memorySpace>>
        d_overlapInvPoisson;
      std::shared_ptr<linearAlgebra::LinearSolverImpl<ValueTypeOperator,
                                                      ValueTypeOperand,
                                                      memorySpace>>
        d_CGSolve;
      std::shared_ptr<linearAlgebra::LinAlgOpContext<memorySpace>>
        d_linAlgOpContext;
 
    }; // end of class BasisOverlapOperatorContext
  }    // namespace basis
} // end of namespace dftefe
#include <basis/CFEOverlapInverseOpContextGLL.t.cpp>
#endif // dftefeCFEOverlapInverseOpContextGLL_h