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sparse_matrix_petsc.hh
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rAKA akantu
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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