PetscSolverGlobalMatrix.h 3.2 KB
 Thomas Witkowski committed Apr 08, 2011 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 // ============================================================================ // == == // == AMDiS - Adaptive multidimensional simulations == // == == // == http://www.amdis-fem.org == // == == // ============================================================================ // // Software License for AMDiS // // Copyright (c) 2010 Dresden University of Technology // All rights reserved. // Authors: Simon Vey, Thomas Witkowski et al. // // This file is part of AMDiS // // See also license.opensource.txt in the distribution. /** \file PetscSolverGlobalMatrix.h */ #ifndef AMDIS_PETSC_SOLVER_GLOBAL_MATRIX_H #define AMDIS_PETSC_SOLVER_GLOBAL_MATRIX_H #include "AMDiS_fwd.h" #include "parallel/PetscSolver.h" namespace AMDiS { using namespace std; class PetscSolverGlobalMatrix : public PetscSolver { public: PetscSolverGlobalMatrix() : PetscSolver(), d_nnz(NULL), o_nnz(NULL), lastMeshNnz(0),  Thomas Witkowski committed Nov 29, 2011 42 43  zeroStartVector(false), alwaysCreateNnzStructure(false)  Thomas Witkowski committed Apr 08, 2011 44  {  Thomas Witkowski committed Apr 18, 2011 45  Parameters::get("parallel->use zero start vector", zeroStartVector);  Thomas Witkowski committed Nov 29, 2011 46 47  Parameters::get("parallel->always create nnz structure", alwaysCreateNnzStructure);  Thomas Witkowski committed Apr 08, 2011 48 49  }  Thomas Witkowski committed Nov 11, 2011 50 51 52  void fillPetscMatrix(Matrix *mat); void fillPetscRhs(SystemVector *vec);  Thomas Witkowski committed Apr 08, 2011 53 54 55  void solvePetscMatrix(SystemVector &vec, AdaptInfo *adaptInfo);  Thomas Witkowski committed Nov 14, 2011 56  void destroyMatrixData();  Thomas Witkowski committed Nov 11, 2011 57   Thomas Witkowski committed Apr 08, 2011 58 59 60 61 62 63 64 65 66 67 68 69  protected: /// Creates a new non zero pattern structure for the PETSc matrix. void createPetscNnzStructure(Matrix *mat); /// Takes a DOF matrix and sends the values to the global PETSc matrix. void setDofMatrix(DOFMatrix* mat, int dispMult = 1, int dispAddRow = 0, int dispAddCol = 0); /// Takes a DOF vector and sends its values to a given PETSc vector. void setDofVector(Vec& petscVec, DOFVector* vec, int disMult = 1, int dispAdd = 0, bool rankOnly = false);  Thomas Witkowski committed Jan 18, 2012 70 71  void createGlobalDofMapping(vector &feSpaces);  Thomas Witkowski committed Apr 08, 2011 72 73 74 75 76 77 78 79 80 81 82 83 84  protected: /// Arrays definig the non zero pattern of Petsc's matrix. int *d_nnz, *o_nnz; /** \brief * Stores the mesh change index of the mesh the nnz structure was created for. * Therefore, if the mesh change index is higher than this value, we have to create * a new nnz structure for PETSc matrices, because the mesh has been changed and * therefore also the assembled matrix structure. */ int lastMeshNnz; bool zeroStartVector;  Thomas Witkowski committed Nov 29, 2011 85 86 87 88 89 90 91 92  /// If this variable is set to true, the non-zero matrix structure is /// created each time from scratch by calling \ref createPetscNnzStrcuture. /// This can be necessary if the number of non-zeros in the matrix varies /// though the mesh does not change. This may happen if there are many /// operators using DOFVectors from old timestep containing many zeros due to /// some phase fields. bool alwaysCreateNnzStructure;  Thomas Witkowski committed Jan 18, 2012 93 94  map, int> dofToGlobalIndex;  Thomas Witkowski committed Apr 08, 2011 95 96 97 98 99 100 101  }; } #endif