| Line |
Branch |
Exec |
Source |
| 1 |
|
|
// ______ ______ _ _ _____ ______ |
| 2 |
|
|
// | ____| ____| | (_)/ ____| | ____| |
| 3 |
|
|
// | |__ | |__ | | _| (___ ___| |__ |
| 4 |
|
|
// | __| | __| | | | |\___ \ / __| __| |
| 5 |
|
|
// | | | |____| |____| |____) | (__| |____ |
| 6 |
|
|
// |_| |______|______|_|_____/ \___|______| |
| 7 |
|
|
// Finite Elements for Life Sciences and Engineering |
| 8 |
|
|
// |
| 9 |
|
|
// License: LGL2.1 License |
| 10 |
|
|
// FELiScE default license: LICENSE in root folder |
| 11 |
|
|
// |
| 12 |
|
|
// Main authors: |
| 13 |
|
|
// |
| 14 |
|
|
|
| 15 |
|
|
#ifndef _REDUCEDSTEKLOV_HPP_ |
| 16 |
|
|
#define _REDUCEDSTEKLOV_HPP_ |
| 17 |
|
|
|
| 18 |
|
|
// System includes |
| 19 |
|
|
#include <vector> |
| 20 |
|
|
|
| 21 |
|
|
// External includes |
| 22 |
|
|
|
| 23 |
|
|
// Project includes |
| 24 |
|
|
#include "InputOutput/io.hpp" |
| 25 |
|
|
#include "Core/chrono.hpp" |
| 26 |
|
|
|
| 27 |
|
|
namespace felisce { |
| 28 |
|
|
|
| 29 |
|
|
// Forward declaration |
| 30 |
|
|
template< class volumeProblem > |
| 31 |
|
|
class LinearProblemReducedSteklov; |
| 32 |
|
|
|
| 33 |
|
|
template< class volumeProblem > |
| 34 |
|
|
class ReducedSteklov { |
| 35 |
|
|
|
| 36 |
|
|
typename LinearProblemReducedSteklov<volumeProblem>::imgType m_imgType; |
| 37 |
|
|
/// (0) Phase zero: initialization |
| 38 |
|
|
public: |
| 39 |
|
|
/// The constructor |
| 40 |
|
|
ReducedSteklov(PetscMatrix& mass, PetscMatrix& laplacian, MPI_Comm comm, LinearProblemReducedSteklov<volumeProblem>* pb, typename LinearProblemReducedSteklov<volumeProblem>::imgType imType,ChronoInstance::Pointer); |
| 41 |
|
|
private: |
| 42 |
|
|
/// The communicator |
| 43 |
|
|
MPI_Comm m_comm; |
| 44 |
|
|
/// The mass matrix |
| 45 |
|
|
PetscMatrix m_mass; |
| 46 |
|
|
/// The matrix of the laplacian operator |
| 47 |
|
|
PetscMatrix m_laplacian; |
| 48 |
|
|
/// The linearProblem; |
| 49 |
|
|
LinearProblemReducedSteklov<volumeProblem>* m_lpb; |
| 50 |
|
|
|
| 51 |
|
|
/// (1) Phase one: the solution of the laplacian eigenProblem |
| 52 |
|
|
public: |
| 53 |
|
|
void solveLaplacianEP(); |
| 54 |
|
|
private: |
| 55 |
|
|
std::vector<PetscVector> m_laplacianEVec; |
| 56 |
|
|
std::vector<PetscVector> m_imgLaplacianEVec; |
| 57 |
|
|
/// (2) Phase two: steklov eigenPairs |
| 58 |
|
|
public: |
| 59 |
|
|
void steklovEVecEstimate(); |
| 60 |
|
|
void applySteklovOperatorOnLEV(felInt imesh); |
| 61 |
|
|
void approximateSteklovEigenVec(std::vector<PetscVector> &coefficients); |
| 62 |
|
|
void assembleReducedMatrix( PetscMatrix& ReducedMatrix ); |
| 63 |
|
|
/// The approximated Steklov eigen-values |
| 64 |
|
|
std::vector<double> m_eValues; |
| 65 |
|
|
std::vector<PetscVector> m_eVecW; |
| 66 |
|
|
/// (3) Phase three: online phase |
| 67 |
|
|
void applyLowRankSteklov(PetscVector& in, PetscVector& out); |
| 68 |
|
|
std::vector<PetscVector> m_onlineInputs; |
| 69 |
|
|
std::vector<PetscVector> m_onlineOutputs; |
| 70 |
|
|
/// Usefull parameters: |
| 71 |
|
|
std::size_t m_offLineBasisDim; |
| 72 |
|
|
std::size_t m_onLineBasisDim; |
| 73 |
|
|
std::size_t m_currentBasisDim; |
| 74 |
|
|
/// PostProcess |
| 75 |
|
|
void exportAllEig(felInt imesh); |
| 76 |
|
|
/// (4) loading/saving off-line basis |
| 77 |
|
|
private: |
| 78 |
|
|
bool m_loaded; |
| 79 |
|
|
bool loadFromFile(std::string folder); |
| 80 |
|
|
std::vector<PetscVector> m_constantResponse; |
| 81 |
|
|
public: |
| 82 |
|
✗ |
inline bool loadedFromFile() { return m_loaded; } |
| 83 |
|
✗ |
void addConstantResponse(const PetscVector& cR) { |
| 84 |
|
✗ |
m_constantResponse.push_back(cR); |
| 85 |
|
|
} |
| 86 |
|
|
ChronoInstance:: Pointer m_chronoRS; |
| 87 |
|
|
}; |
| 88 |
|
|
} |
| 89 |
|
|
// The implementation |
| 90 |
|
|
#include "Solver/reducedSteklov.hxx" |
| 91 |
|
|
#endif |
| 92 |
|
|
|