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sparse_matrix_petsc.hh
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/**
* @file sparse_matrix_petsc.hh
*
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Tue Feb 06 2018
*
* @brief Interface for PETSc matrices
*
* @section LICENSE
*
* Copyright (©) 2010-2018 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_PETSC_MATRIX_HH__
#define __AKANTU_PETSC_MATRIX_HH__
/* -------------------------------------------------------------------------- */
#include "sparse_matrix.hh"
/* -------------------------------------------------------------------------- */
#include <petscao.h>
#include <petscmat.h>
/* -------------------------------------------------------------------------- */
namespace akantu {
class DOFManagerPETSc;
}
namespace akantu {
class SparseMatrixPETSc : public SparseMatrix {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
SparseMatrixPETSc(DOFManagerPETSc & dof_manager,
const MatrixType & matrix_type,
const ID & id = "sparse_matrix",
const MemoryID & memory_id = 0);
SparseMatrixPETSc(const SparseMatrix & matrix,
const ID & id = "sparse_matrix_petsc",
const MemoryID & memory_id = 0);
virtual ~SparseMatrixPETSc();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// set the matrix to 0
virtual void clear();
/// modify the matrix to "remove" the blocked dof
virtual void applyBoundary(const Array<bool> & boundary, Real block_val = 1.);
/// save the matrix in a ASCII file format
virtual void saveMatrix(const std::string & filename) const;
/// add a sparse matrix assuming the profile are the same
virtual void add(const SparseMatrix & matrix, Real alpha);
/// add a petsc matrix assuming the profile are the same
virtual void add(const SparseMatrixPETSc & matrix, Real alpha);
Real operator()(UInt i, UInt j) const;
protected:
typedef std::pair<UInt, UInt> KeyCOO;
inline KeyCOO key(UInt i, UInt j) const { return std::make_pair(i, j); }
private:
virtual void destroyInternalData();
/// set the size of the PETSc matrix
void setSize();
void createGlobalAkantuToPETScMap(Int * local_master_eq_nbs_ptr);
void createLocalAkantuToPETScMap();
/// start to assemble the matrix
void beginAssembly();
/// finishes to assemble the matrix
void endAssembly();
/// perform the assembly stuff from petsc
void performAssembly();
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
AKANTU_GET_MACRO(PETScMat, mat, const Mat &);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private:
// DOFManagerPETSc that contains the numbering for petsc
DOFManagerPETSc & dof_manager;
/// store the PETSc matrix
Mat mat;
AO ao;
/// size of the diagonal part of the matrix partition
Int local_size;
/// number of nonzeros in every row of the diagonal part
Array<Int> d_nnz;
/// number of nonzeros in every row of the off-diagonal part
Array<Int> o_nnz;
/// the global index of the first local row
Int first_global_index;
/// bool to indicate if the matrix data has been initialized by calling
/// MatCreate
bool is_petsc_matrix_initialized;
};
} // akantu
#endif /* __AKANTU_PETSC_MATRIX_HH__ */

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