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MFEM
v4.3.0
Finite element discretization library
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The identity operator as a hypre solver. More...
#include <hypre.hpp>
Public Member Functions | |
virtual | operator HYPRE_Solver () const |
Typecast to HYPRE_Solver – return the solver. More... | |
virtual HYPRE_PtrToParSolverFcn | SetupFcn () const |
hypre's internal Setup function More... | |
virtual HYPRE_PtrToParSolverFcn | SolveFcn () const |
hypre's internal Solve function More... | |
virtual | ~HypreIdentity () |
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HypreSolver () | |
HypreSolver (const HypreParMatrix *A_) | |
virtual void | SetOperator (const Operator &op) |
Set/update the solver for the given operator. More... | |
virtual MemoryClass | GetMemoryClass () const |
Return the MemoryClass preferred by the Operator. More... | |
virtual void | Mult (const HypreParVector &b, HypreParVector &x) const |
Solve the linear system Ax=b. More... | |
virtual void | Mult (const Vector &b, Vector &x) const |
Operator application: y=A(x) . More... | |
void | SetErrorMode (ErrorMode err_mode) const |
Set the behavior for treating hypre errors, see the ErrorMode enum. The default mode in the base class is ABORT_HYPRE_ERRORS. More... | |
virtual | ~HypreSolver () |
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Solver (int s=0, bool iter_mode=false) | |
Initialize a square Solver with size s. More... | |
Solver (int h, int w, bool iter_mode=false) | |
Initialize a Solver with height h and width w. More... | |
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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 | MultTranspose (const Vector &x, Vector &y) const |
Action of the transpose operator: y=A^t(x) . The default behavior in class Operator is to generate an error. 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... | |
virtual const Operator * | GetProlongation () const |
Prolongation operator from linear algebra (linear system) vectors, to input vectors for the operator. NULL means identity. More... | |
virtual const Operator * | GetRestriction () const |
Restriction operator from input vectors for the operator to linear algebra (linear system) vectors. NULL means identity. More... | |
virtual const Operator * | GetOutputProlongation () const |
Prolongation operator from linear algebra (linear system) vectors, to output vectors for the operator. NULL means identity. More... | |
virtual const Operator * | GetOutputRestrictionTranspose () const |
Transpose of GetOutputRestriction, directly available in this form to facilitate matrix-free RAP-type operators. More... | |
virtual const Operator * | GetOutputRestriction () const |
Restriction operator from output vectors for the operator to linear algebra (linear system) vectors. NULL means identity. 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=0, int m=0) const |
Prints operator with input size n and output size m in Matlab format. More... | |
virtual | ~Operator () |
Virtual destructor. More... | |
Type | GetType () const |
Return the type ID of the Operator class. More... | |
Additional Inherited Members | |
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enum | ErrorMode { IGNORE_HYPRE_ERRORS, WARN_HYPRE_ERRORS, ABORT_HYPRE_ERRORS } |
How to treat errors returned by hypre function calls. More... | |
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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 } |
Enumeration defining IDs for some classes derived from Operator. More... | |
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bool | iterative_mode |
If true, use the second argument of Mult() as an initial guess. More... | |
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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... | |
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const HypreParMatrix * | A |
The linear system matrix. More... | |
HypreParVector * | B |
Right-hand side and solution vector. More... | |
HypreParVector * | X |
Memory< double > | auxB |
Memory< double > | auxX |
int | setup_called |
Was hypre's Setup function called already? More... | |
ErrorMode | error_mode |
How to treat hypre errors. More... | |
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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... | |
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inlinevirtual |
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inlinevirtual |
Typecast to HYPRE_Solver – return the solver.
Implements mfem::HypreSolver.
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inlinevirtual |
hypre's internal Setup function
Implements mfem::HypreSolver.
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inlinevirtual |
hypre's internal Solve function
Implements mfem::HypreSolver.