46 #ifndef IFPACK2_EXPERIMENTALCRSRBILUK_DECL_HPP
47 #define IFPACK2_EXPERIMENTALCRSRBILUK_DECL_HPP
49 #include <Tpetra_BlockCrsMatrix.hpp>
51 #include <Ifpack2_RILUK.hpp>
55 namespace Experimental {
127 template<
class MatrixType>
129 typename MatrixType::local_ordinal_type, typename MatrixType::global_ordinal_type, typename MatrixType::node_type> >
135 typedef typename MatrixType::scalar_type
scalar_type;
139 typedef typename Kokkos::ArithTraits<typename MatrixType::scalar_type>::val_type impl_scalar_type;
143 typedef typename MatrixType::local_ordinal_type LO;
147 typedef typename MatrixType::global_ordinal_type GO;
176 template <
class NewMatrixType>
friend class RBILUK;
182 typedef typename crs_matrix_type::local_matrix_device_type local_matrix_device_type;
183 typedef typename local_matrix_device_type::StaticCrsGraphType::row_map_type lno_row_view_t;
184 typedef typename local_matrix_device_type::StaticCrsGraphType::entries_type lno_nonzero_view_t;
185 typedef typename local_matrix_device_type::values_type scalar_nonzero_view_t;
186 typedef typename local_matrix_device_type::StaticCrsGraphType::device_type::memory_space TemporaryMemorySpace;
187 typedef typename local_matrix_device_type::StaticCrsGraphType::device_type::memory_space PersistentMemorySpace;
188 typedef typename local_matrix_device_type::StaticCrsGraphType::device_type::execution_space HandleExecSpace;
189 typedef typename KokkosKernels::Experimental::KokkosKernelsHandle
190 <
typename lno_row_view_t::const_value_type,
typename lno_nonzero_view_t::const_value_type,
typename scalar_nonzero_view_t::value_type,
191 HandleExecSpace, TemporaryMemorySpace,PersistentMemorySpace > kk_handle_type;
245 using RILUK<Tpetra::RowMatrix<
typename MatrixType::scalar_type,
246 typename MatrixType::local_ordinal_type,
247 typename MatrixType::global_ordinal_type,
316 apply (
const Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type>& X,
317 Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type>& Y,
329 const block_crs_matrix_type&
getLBlock ()
const;
332 const block_crs_matrix_type&
getDBlock ()
const;
335 const block_crs_matrix_type&
getUBlock ()
const;
338 typedef Tpetra::MultiVector<scalar_type,local_ordinal_type,global_ordinal_type,node_type> MV;
341 typedef typename block_crs_matrix_type::little_block_type little_block_type;
342 typedef typename block_crs_matrix_type::little_block_host_type little_block_host_type;
343 typedef typename block_crs_matrix_type::little_vec_type little_vec_type;
344 typedef typename block_crs_matrix_type::little_host_vec_type little_host_vec_type;
345 typedef typename block_crs_matrix_type::const_host_little_vec_type const_host_little_vec_type;
347 using local_inds_host_view_type =
typename block_crs_matrix_type::local_inds_host_view_type;
348 using values_host_view_type =
typename block_crs_matrix_type::values_host_view_type;
349 using local_inds_device_view_type =
typename block_crs_matrix_type::local_inds_device_view_type;
350 using values_device_view_type =
typename block_crs_matrix_type::values_device_view_type;
352 void allocate_L_and_U_blocks();
353 void initAllValues ();
void initialize()
Initialize by computing the symbolic incomplete factorization.
Definition: Ifpack2_Experimental_RBILUK_def.hpp:344
MatrixType::global_ordinal_type global_ordinal_type
The type of global indices in the input MatrixType.
Definition: Ifpack2_Experimental_RBILUK_decl.hpp:146
virtual ~RBILUK()
Destructor (declared virtual for memory safety).
Definition: Ifpack2_Experimental_RBILUK_def.hpp:133
const block_crs_matrix_type & getUBlock() const
Return the U factor of the ILU factorization.
Definition: Ifpack2_Experimental_RBILUK_def.hpp:190
MatrixType::scalar_type scalar_type
The type of the entries of the input MatrixType.
Definition: Ifpack2_Experimental_RBILUK_decl.hpp:136
void apply(const Tpetra::MultiVector< scalar_type, local_ordinal_type, global_ordinal_type, node_type > &X, Tpetra::MultiVector< scalar_type, local_ordinal_type, global_ordinal_type, node_type > &Y, Teuchos::ETransp mode=Teuchos::NO_TRANS, scalar_type alpha=Teuchos::ScalarTraits< scalar_type >::one(), scalar_type beta=Teuchos::ScalarTraits< scalar_type >::zero()) const
Apply the (inverse of the) incomplete factorization to X, resulting in Y.
Definition: Ifpack2_Experimental_RBILUK_def.hpp:920
Teuchos::ScalarTraits< scalar_type >::magnitudeType magnitude_type
The type of the magnitude (absolute value) of a matrix entry.
Definition: Ifpack2_Experimental_RBILUK_decl.hpp:153
ILU(k) factorization of a given Tpetra::RowMatrix.
Definition: Ifpack2_RILUK_decl.hpp:245
MatrixType::node_type node_type
The Node type used by the input MatrixType.
Definition: Ifpack2_Experimental_RBILUK_decl.hpp:150
Tpetra::CrsMatrix< scalar_type, local_ordinal_type, global_ordinal_type, node_type > crs_matrix_type
Tpetra::CrsMatrix specialization used by this class for representing L and U.
Definition: Ifpack2_Experimental_RBILUK_decl.hpp:165
MatrixType::local_ordinal_type local_ordinal_type
The type of local indices in the input MatrixType.
Definition: Ifpack2_Experimental_RBILUK_decl.hpp:142
const block_crs_matrix_type & getDBlock() const
Return the diagonal entries of the ILU factorization.
Definition: Ifpack2_Experimental_RBILUK_def.hpp:176
void compute()
Compute the (numeric) incomplete factorization.
Definition: Ifpack2_Experimental_RBILUK_def.hpp:578
Teuchos::RCP< const block_crs_matrix_type > getBlockMatrix() const
Get the input matrix.
void setMatrix(const Teuchos::RCP< const block_crs_matrix_type > &A)
Change the matrix to be preconditioned.
Definition: Ifpack2_Experimental_RBILUK_def.hpp:138
const block_crs_matrix_type & getLBlock() const
Return the L factor of the ILU factorization.
Definition: Ifpack2_Experimental_RBILUK_def.hpp:162
Tpetra::RowMatrix< scalar_type, local_ordinal_type, global_ordinal_type, node_type > row_matrix_type
Tpetra::RowMatrix specialization used by this class.
Definition: Ifpack2_Experimental_RBILUK_decl.hpp:159
std::string description() const
A one-line description of this object.
Definition: Ifpack2_Experimental_RBILUK_def.hpp:1072
ILU(k) factorization of a given Tpetra::BlockCrsMatrix.
Definition: Ifpack2_Experimental_RBILUK_decl.hpp:128