 |
MFEM
v4.6.0
Finite element discretization library
|
|
MFEM
v4.6.0
Finite element discretization library
|
Partial assembly extension for DiscreteLinearOperator. More...
#include <bilinearform_ext.hpp>
Public Member Functions | |
| PADiscreteLinearOperatorExtension (DiscreteLinearOperator *linop) | |
| void | Assemble () |
| Partial assembly of all internal integrators. More... | |
| void | AddMult (const Vector &x, Vector &y, const double c=1.0) const |
| y += c*A*x More... | |
| void | AddMultTranspose (const Vector &x, Vector &y, const double c=1.0) const |
| y += c*A^T*x More... | |
| void | FormRectangularSystemOperator (const Array< int > &, const Array< int > &, OperatorHandle &A) |
| Setup OperatorHandle A to contain constrained linear operator. More... | |
| const Operator * | GetOutputRestrictionTranspose () const |
| Transpose of GetOutputRestriction, directly available in this form to facilitate matrix-free RAP-type operators. More... | |
 Public Member Functions inherited from mfem::PAMixedBilinearFormExtension | |
| PAMixedBilinearFormExtension (MixedBilinearForm *form) | |
| void | FormRectangularLinearSystem (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, Vector &x, Vector &b, OperatorHandle &A, Vector &X, Vector &B) |
| void | Mult (const Vector &x, Vector &y) const |
| y = A*x More... | |
| void | MultTranspose (const Vector &x, Vector &y) const |
| y = A^T*x More... | |
| void | AssembleDiagonal_ADAt (const Vector &D, Vector &diag) const |
| Assemble the diagonal of ADA^T for a diagonal vector D. More... | |
| void | Update () |
| Update internals for when a new MixedBilinearForm is given to this class. More... | |
| Public Member Functions inherited from mfem::MixedBilinearFormExtension | |
| MixedBilinearFormExtension (MixedBilinearForm *form) | |
| virtual MemoryClass | GetMemoryClass () const |
| Return the MemoryClass preferred by the Operator. More... | |
| virtual const Operator * | GetProlongation () const |
| Get the finite element space prolongation matrix. More... | |
| virtual const Operator * | GetRestriction () const |
| Get the finite element space restriction matrix. More... | |
| virtual const Operator * | GetOutputProlongation () const |
| Get the output finite element space restriction matrix. More... | |
| virtual const Operator * | GetOutputRestriction () const |
| Get the output finite element space restriction matrix. More... | |
| Public Member Functions inherited from mfem::Operator | |
| void | InitTVectors (const Operator *Po, const Operator *Ri, const Operator *Pi, Vector &x, Vector &b, Vector &X, Vector &B) const |
| Initializes memory for true vectors of linear system. More... | |
| Operator (int s=0) | |
| Construct a square Operator with given size s (default 0). More... | |
| Operator (int h, int w) | |
| Construct an Operator with the given height (output size) and width (input size). More... | |
| int | Height () const |
| Get the height (size of output) of the Operator. Synonym with NumRows(). More... | |
| int | NumRows () const |
| Get the number of rows (size of output) of the Operator. Synonym with Height(). More... | |
| int | Width () const |
| Get the width (size of input) of the Operator. Synonym with NumCols(). More... | |
| int | NumCols () const |
| Get the number of columns (size of input) of the Operator. Synonym with Width(). More... | |
| virtual void | ArrayMult (const Array< const Vector *> &X, Array< Vector *> &Y) const |
Operator application on a matrix: Y=A(X). More... | |
| virtual void | ArrayMultTranspose (const Array< const Vector *> &X, Array< Vector *> &Y) const |
Action of the transpose operator on a matrix: Y=A^t(X). More... | |
| virtual void | ArrayAddMult (const Array< const Vector *> &X, Array< Vector *> &Y, const double a=1.0) const |
Operator application on a matrix: Y+=A(X) (default) or Y+=a*A(X). More... | |
| virtual void | ArrayAddMultTranspose (const Array< const Vector *> &X, Array< Vector *> &Y, const double a=1.0) const |
Operator transpose application on a matrix: Y+=A^t(X) (default) or Y+=a*A^t(X). More... | |
| virtual Operator & | GetGradient (const Vector &x) const |
| Evaluate the gradient operator at the point x. The default behavior in class Operator is to generate an error. More... | |
| virtual void | AssembleDiagonal (Vector &diag) const |
| Computes the diagonal entries into diag. Typically, this operation only makes sense for linear Operators. In some cases, only an approximation of the diagonal is computed. More... | |
| void | FormLinearSystem (const Array< int > &ess_tdof_list, Vector &x, Vector &b, Operator *&A, Vector &X, Vector &B, int copy_interior=0) |
| Form a constrained linear system using a matrix-free approach. More... | |
| void | FormRectangularLinearSystem (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, Vector &x, Vector &b, Operator *&A, Vector &X, Vector &B) |
| Form a column-constrained linear system using a matrix-free approach. More... | |
| virtual void | RecoverFEMSolution (const Vector &X, const Vector &b, Vector &x) |
| Reconstruct a solution vector x (e.g. a GridFunction) from the solution X of a constrained linear system obtained from Operator::FormLinearSystem() or Operator::FormRectangularLinearSystem(). More... | |
| void | FormSystemOperator (const Array< int > &ess_tdof_list, Operator *&A) |
| Return in A a parallel (on truedofs) version of this square operator. More... | |
| void | FormRectangularSystemOperator (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, Operator *&A) |
| Return in A a parallel (on truedofs) version of this rectangular operator (including constraints). More... | |
| void | FormDiscreteOperator (Operator *&A) |
| Return in A a parallel (on truedofs) version of this rectangular operator. More... | |
| void | PrintMatlab (std::ostream &out, int n, int m=0) const |
| Prints operator with input size n and output size m in Matlab format. More... | |
| virtual void | PrintMatlab (std::ostream &out) const |
| Prints operator in Matlab format. More... | |
| virtual | ~Operator () |
| Virtual destructor. More... | |
| Type | GetType () const |
| Return the type ID of the Operator class. More... | |
Additional Inherited Members | |
| Public Types inherited from mfem::Operator | |
| enum | DiagonalPolicy { DIAG_ZERO, DIAG_ONE, DIAG_KEEP } |
| Defines operator diagonal policy upon elimination of rows and/or columns. More... | |
| enum | Type { ANY_TYPE, MFEM_SPARSEMAT, Hypre_ParCSR, PETSC_MATAIJ, PETSC_MATIS, PETSC_MATSHELL, PETSC_MATNEST, PETSC_MATHYPRE, PETSC_MATGENERIC, Complex_Operator, MFEM_ComplexSparseMat, Complex_Hypre_ParCSR, Complex_DenseMat, MFEM_Block_Matrix, MFEM_Block_Operator } |
| Enumeration defining IDs for some classes derived from Operator. More... | |
| Protected Member Functions inherited from mfem::PAMixedBilinearFormExtension | |
| void | SetupMultInputs (const Operator *elem_restrict_x, const Vector &x, Vector &localX, const Operator *elem_restrict_y, Vector &y, Vector &localY, const double c) const |
| Helper function to set up inputs/outputs for Mult or MultTranspose. More... | |
| Protected Member Functions inherited from mfem::Operator | |
| void | FormConstrainedSystemOperator (const Array< int > &ess_tdof_list, ConstrainedOperator *&Aout) |
| see FormSystemOperator() More... | |
| void | FormRectangularConstrainedSystemOperator (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, RectangularConstrainedOperator *&Aout) |
| see FormRectangularSystemOperator() More... | |
| Operator * | SetupRAP (const Operator *Pi, const Operator *Po) |
| Returns RAP Operator of this, using input/output Prolongation matrices Pi corresponds to "P", Po corresponds to "Rt". More... | |
| Protected Attributes inherited from mfem::PAMixedBilinearFormExtension | |
| const FiniteElementSpace * | trial_fes |
| const FiniteElementSpace * | test_fes |
| Vector | localTrial |
| Vector | localTest |
| Vector | tempY |
| const Operator * | elem_restrict_trial |
| const Operator * | elem_restrict_test |
| Protected Attributes inherited from mfem::MixedBilinearFormExtension | |
| MixedBilinearForm * | a |
| Not owned. More... | |
| Protected Attributes inherited from mfem::Operator | |
| int | height |
| Dimension of the output / number of rows in the matrix. More... | |
| int | width |
| Dimension of the input / number of columns in the matrix. More... | |
Partial assembly extension for DiscreteLinearOperator.
This acts very much like PAMixedBilinearFormExtension, but its FormRectangularSystemOperator implementation emulates 'Set' rather than 'Add' in the assembly case.
Definition at line 300 of file bilinearform_ext.hpp.
| mfem::PADiscreteLinearOperatorExtension::PADiscreteLinearOperatorExtension | ( | DiscreteLinearOperator * | linop | ) |
Definition at line 1601 of file bilinearform_ext.cpp.
|
virtual |
y += c*A*x
Reimplemented from mfem::PAMixedBilinearFormExtension.
Definition at line 1646 of file bilinearform_ext.cpp.
|
virtual |
y += c*A^T*x
Reimplemented from mfem::PAMixedBilinearFormExtension.
Definition at line 1679 of file bilinearform_ext.cpp.
|
virtual |
Partial assembly of all internal integrators.
Reimplemented from mfem::PAMixedBilinearFormExtension.
Definition at line 1614 of file bilinearform_ext.cpp.
|
virtual |
Setup OperatorHandle A to contain constrained linear operator.
OperatorHandle A contains matrix-free constrained operator formed for RAP system where ess_tdof_list are in trial space and eliminated from "columns" of A.
Reimplemented from mfem::PAMixedBilinearFormExtension.
Definition at line 1718 of file bilinearform_ext.cpp.
|
virtual |
Transpose of GetOutputRestriction, directly available in this form to facilitate matrix-free RAP-type operators.
NULL means identity.
Reimplemented from mfem::Operator.
Definition at line 1608 of file bilinearform_ext.cpp.
1.8.14