This class implements a Blocked ILU0 preconditioner The decomposition is done on GPU, using exact decomposition, or ChowPatel decomposition The preconditioner is applied via two exact triangular solves.
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| rocsparseBILU0 (int verbosity_) |
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bool | initialize (std::shared_ptr< BlockedMatrix< Scalar > > matrix, std::shared_ptr< BlockedMatrix< Scalar > > jacMatrix, rocsparse_int *d_Arows, rocsparse_int *d_Acols) override |
| Initialize GPU and allocate memory.
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bool | analyze_matrix (BlockedMatrix< Scalar > *mat) override |
| Analysis, extract parallelism if specified.
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bool | analyze_matrix (BlockedMatrix< Scalar > *mat, BlockedMatrix< Scalar > *jacMat) override |
| Analysis, extract parallelism if specified.
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bool | create_preconditioner (BlockedMatrix< Scalar > *mat) override |
| ILU decomposition.
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bool | create_preconditioner (BlockedMatrix< Scalar > *mat, BlockedMatrix< Scalar > *jacMat) override |
| ILU decomposition.
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void | apply (Scalar &y, Scalar &x) override |
| Apply preconditioner, x = prec(y) via Lz = y and Ux = z.
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void | copy_system_to_gpu (Scalar *mVals) override |
| Copy matrix A values to GPU.
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void | update_system_on_gpu (Scalar *b) override |
| Reassign pointers, in case the addresses of the Dune variables have changed --> TODO: check when/if we need this method.
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void | set_matrix_analysis (rocsparse_mat_descr descr_L, rocsparse_mat_descr descr_U) |
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void | set_context (rocsparse_handle handle, rocsparse_direction dir, rocsparse_operation operation, hipStream_t stream) |
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void | setJacMat (const BlockedMatrix< Scalar > &jacMat) |
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static std::unique_ptr< rocsparsePreconditioner< Scalar, block_size > > | create (PreconditionerType type, int verbosity) |
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static std::unique_ptr< Preconditioner > | create (PreconditionerType type, bool opencl_ilu_parallel, int verbosity) |
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int | nnzbs_prec = 0 |
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bool | useJacMatrix = false |
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std::shared_ptr< BlockedMatrix< Scalar > > | jacMat {} |
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| rocsparsePreconditioner (int verbosity_) |
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| Preconditioner (int verbosity_) |
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rocsparse_handle | handle |
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rocsparse_direction | dir = rocsparse_direction_row |
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rocsparse_operation | operation = rocsparse_operation_none |
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rocsparse_mat_descr | descr_L |
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rocsparse_mat_descr | descr_U |
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hipStream_t | stream |
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int | N = 0 |
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int | Nb = 0 |
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int | nnz = 0 |
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int | nnzb = 0 |
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int | verbosity = 0 |
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template<class Scalar, unsigned int block_size>
class Opm::Accelerator::rocsparseBILU0< Scalar, block_size >
This class implements a Blocked ILU0 preconditioner The decomposition is done on GPU, using exact decomposition, or ChowPatel decomposition The preconditioner is applied via two exact triangular solves.