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preCICE v3.3.0
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preCICE v3.3.0
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Preconditioner that uses the recent residual to scale the quasi-Newton system. More...
#include <ResidualPreconditioner.hpp>
Public Member Functions | |
| ResidualPreconditioner (int maxNonConstTimeWindows) | |
| ~ResidualPreconditioner () override=default | |
| Destructor, empty. | |
| Public Member Functions inherited from precice::acceleration::impl::Preconditioner | |
| Preconditioner (int maxNonConstTimeWindows) | |
| virtual | ~Preconditioner ()=default |
| Destructor, empty. | |
| virtual void | initialize (std::vector< size_t > &svs) |
| initialize the preconditioner | |
| void | apply (Eigen::MatrixXd &M, bool transpose) |
| Apply preconditioner to matrix. | |
| void | revert (Eigen::MatrixXd &M, bool transpose) |
| Apply inverse preconditioner to matrix. | |
| void | apply (Eigen::MatrixXd &M) |
| To transform physical values to balanced values. Matrix version. | |
| void | apply (Eigen::VectorXd &v) |
| To transform physical values to balanced values. Vector version. | |
| void | revert (Eigen::MatrixXd &M) |
| To transform balanced values back to physical values. Matrix version. | |
| void | revert (Eigen::VectorXd &v) |
| To transform balanced values back to physical values. Vector version. | |
| void | update (bool timeWindowComplete, const Eigen::VectorXd &oldValues, const Eigen::VectorXd &res) |
| Update the scaling after every FSI iteration and require a new QR decomposition (if necessary) | |
| bool | requireNewQR () |
| returns true if a QR decomposition from scratch is necessary | |
| void | newQRfulfilled () |
| to tell the preconditioner that QR-decomposition has been recomputed | |
| std::vector< double > & | getWeights () |
| bool | isConst () |
Private Member Functions | |
| void | _update_ (bool timeWindowComplete, const Eigen::VectorXd &oldValues, const Eigen::VectorXd &res) override |
| Update the scaling after every FSI iteration. | |
Private Attributes | |
| logging::Logger | _log {"acceleration::ResidualPreconditioner"} |
Additional Inherited Members | |
| Protected Attributes inherited from precice::acceleration::impl::Preconditioner | |
| std::vector< double > | _weights |
| Weights used to scale the matrix V and the residual. | |
| std::vector< double > | _invWeights |
| Inverse weights (for efficiency reasons) | |
| std::vector< size_t > | _subVectorSizes |
| Sizes of each sub-vector, i.e. each coupling data. | |
| std::vector< size_t > | _subVectorOffsets |
| Offsets of each sub-vector in concatenated data, i.e. each coupling data. | |
| int | _maxNonConstTimeWindows |
| maximum number of non-const time windows, i.e., after this number of time windows, the preconditioner is frozen with the current weights and becomes a constant preconditioner | |
| int | _nbNonConstTimeWindows = 0 |
| Counts the number of completed time windows with a non-const weighting. | |
| bool | _requireNewQR = false |
| True if a QR decomposition from scratch is necessary. | |
| bool | _frozen = false |
| True if _nbNonConstTimeWindows >= _maxNonConstTimeWindows, i.e., preconditioner is not updated any more. | |
Preconditioner that uses the recent residual to scale the quasi-Newton system.
Definition at line 13 of file ResidualPreconditioner.hpp.
| precice::acceleration::impl::ResidualPreconditioner::ResidualPreconditioner | ( | int | maxNonConstTimeWindows | ) |
|
overridedefault |
Destructor, empty.
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overrideprivatevirtual |
Update the scaling after every FSI iteration.
| [in] | timeWindowComplete | True if this FSI iteration also completed a time window |
Implements precice::acceleration::impl::Preconditioner.
Definition at line 15 of file ResidualPreconditioner.cpp.
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private |
Definition at line 33 of file ResidualPreconditioner.hpp.