MFEM
v3.3
Finite element discretization library
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Abstract base class for iterative solver. More...
#include <solvers.hpp>
Public Member Functions | |
IterativeSolver () | |
IterativeSolver (MPI_Comm _comm) | |
void | SetRelTol (double rtol) |
void | SetAbsTol (double atol) |
void | SetMaxIter (int max_it) |
void | SetPrintLevel (int print_lvl) |
int | GetNumIterations () const |
int | GetConverged () const |
double | GetFinalNorm () const |
virtual void | SetPreconditioner (Solver &pr) |
This should be called before SetOperator. More... | |
virtual void | SetOperator (const Operator &op) |
Also calls SetOperator for the preconditioner if there is one. More... | |
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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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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 | Mult (const Vector &x, Vector &y) const =0 |
Operator application: y=A(x) . 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 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... | |
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... | |
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(). 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... | |
Protected Member Functions | |
double | Dot (const Vector &x, const Vector &y) const |
double | Norm (const Vector &x) const |
Protected Attributes | |
const Operator * | oper |
Solver * | prec |
int | max_iter |
int | print_level |
double | rel_tol |
double | abs_tol |
int | final_iter |
int | converged |
double | final_norm |
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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... | |
Additional Inherited Members | |
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enum | Type { MFEM_SPARSEMAT, HYPRE_PARCSR, PETSC_MATAIJ, PETSC_MATIS, PETSC_MATSHELL, PETSC_MATNEST } |
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... | |
Abstract base class for iterative solver.
Definition at line 32 of file solvers.hpp.
mfem::IterativeSolver::IterativeSolver | ( | ) |
Definition at line 23 of file solvers.cpp.
mfem::IterativeSolver::IterativeSolver | ( | MPI_Comm | _comm | ) |
Definition at line 37 of file solvers.cpp.
Definition at line 50 of file solvers.cpp.
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Definition at line 67 of file solvers.hpp.
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Definition at line 68 of file solvers.hpp.
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Definition at line 66 of file solvers.hpp.
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inlineprotected |
Definition at line 52 of file solvers.hpp.
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Definition at line 62 of file solvers.hpp.
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Definition at line 63 of file solvers.hpp.
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Also calls SetOperator for the preconditioner if there is one.
Implements mfem::Solver.
Reimplemented in mfem::KinSolver, mfem::SLBQPOptimizer, mfem::NewtonSolver, mfem::MINRESSolver, mfem::BiCGSTABSolver, mfem::CGSolver, and mfem::SLISolver.
Definition at line 98 of file solvers.cpp.
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This should be called before SetOperator.
Reimplemented in mfem::KinSolver, mfem::SLBQPOptimizer, and mfem::MINRESSolver.
Definition at line 92 of file solvers.cpp.
void mfem::IterativeSolver::SetPrintLevel | ( | int | print_lvl | ) |
Definition at line 71 of file solvers.cpp.
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Definition at line 61 of file solvers.hpp.
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Definition at line 45 of file solvers.hpp.
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Definition at line 48 of file solvers.hpp.
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Definition at line 48 of file solvers.hpp.
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Definition at line 49 of file solvers.hpp.
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Definition at line 44 of file solvers.hpp.
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Definition at line 41 of file solvers.hpp.
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Definition at line 42 of file solvers.hpp.
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Definition at line 44 of file solvers.hpp.
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Definition at line 45 of file solvers.hpp.