CFEOverlapOperatorContext.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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 *   it under the terms of the Lesser GNU General Public License as           *
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 *   See the Lesser GNU General Public License for more details.              *
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/*
 * @author Avirup Sircar
 */
 
#ifndef dftefeCFEOverlapOperatorContext_h
#define dftefeCFEOverlapOperatorContext_h
 
#include <utils/MemorySpaceType.h>
#include <linearAlgebra/BlasLapackTypedef.h>
#include <linearAlgebra/LinAlgOpContext.h>
#include <linearAlgebra/Vector.h>
#include <linearAlgebra/MultiVector.h>
#include <linearAlgebra/OperatorContext.h>
#include <basis/FEBasisManager.h>
#include <basis/CFEBasisDataStorageDealii.h>
#include <quadrature/QuadratureAttributes.h>
#include <memory>
 
namespace dftefe
{
  namespace basis
  {
    template <typename ValueTypeOperator,
              typename ValueTypeOperand,
              utils::MemorySpace memorySpace,
              size_type          dim>
    class CFEOverlapOperatorContext
      : public linearAlgebra::
          OperatorContext<ValueTypeOperator, ValueTypeOperand, memorySpace>
    {
    public:
      using ValueType =
        linearAlgebra::blasLapack::scalar_type<ValueTypeOperator,
                                               ValueTypeOperand>;
 
      using Storage =
        dftefe::utils::MemoryStorage<ValueTypeOperator, memorySpace>;
 
    public:
      CFEOverlapOperatorContext(
        const FEBasisManager<ValueTypeOperand,
                             ValueTypeOperator,
                             memorySpace,
                             dim> &feBasisManager,
        const FEBasisDataStorage<ValueTypeOperator, memorySpace>
          &             feBasisDataStorage,
        const size_type maxCellTimesNumVecs);
 
      CFEOverlapOperatorContext(
        const FEBasisManager<ValueTypeOperand,
                             ValueTypeOperator,
                             memorySpace,
                             dim> &feBasisManager,
        const FEBasisDataStorage<ValueTypeOperator, memorySpace>
          &feBasisDataStorage,
        std::shared_ptr<linearAlgebra::LinAlgOpContext<memorySpace>>
          linAlgOpContext);
 
      // void
      // apply(const linearAlgebra::Vector<ValueTypeOperand, memorySpace> &x,
      //       linearAlgberba::Vector<ValueType, memorySpace> &y) const
      //       override;
 
      void
      apply(
        linearAlgebra::MultiVector<ValueTypeOperand, memorySpace> &X,
        linearAlgebra::MultiVector<ValueType, memorySpace> &Y) const override;
 
      // get overlap of two basis functions in a cell
      Storage
      getBasisOverlap(const size_type cellId,
                      const size_type basisId1,
                      const size_type basisId2) const;
 
      // get overlap of all the basis functions in a cell
      Storage
      getBasisOverlapInCell(const size_type cellId) const;
 
      // get overlap of all the basis functions in all cells
      const Storage &
      getBasisOverlapInAllCells() const;
 
    private:
      const FEBasisManager<ValueTypeOperand,
                           ValueTypeOperator,
                           memorySpace,
                           dim> *d_feBasisManager;
      std::shared_ptr<Storage>   d_basisOverlap;
      std::vector<size_type>     d_cellStartIdsBasisOverlap;
      std::vector<size_type>     d_dofsInCell;
      const size_type            d_maxCellTimesNumVecs;
 
      bool d_isMassLumping;
      std::shared_ptr<linearAlgebra::Vector<ValueTypeOperator, memorySpace>>
        d_diagonal;
 
    }; // end of class CFEOverlapOperatorContext
  }    // end of namespace basis
} // end of namespace dftefe
#include <basis/CFEOverlapOperatorContext.t.cpp>
#endif // dftefeCFEOverlapOperatorContext_h