MFEM
v4.0
Finite element discretization library
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MINRES method. More...
#include <solvers.hpp>
Public Member Functions | |
MINRESSolver () | |
MINRESSolver (MPI_Comm _comm) | |
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... | |
virtual void | Mult (const Vector &b, Vector &x) const |
Operator application: y=A(x) . More... | |
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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 |
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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 MemoryClass | GetMemoryClass () const |
Return the MemoryClass preferred by the Operator. 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... | |
Type | GetType () const |
Return the type ID of the Operator class. More... | |
Protected Attributes | |
Vector | v0 |
Vector | v1 |
Vector | w0 |
Vector | w1 |
Vector | q |
Vector | u1 |
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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 { ANY_TYPE, MFEM_SPARSEMAT, Hypre_ParCSR, PETSC_MATAIJ, PETSC_MATIS, PETSC_MATSHELL, PETSC_MATNEST, PETSC_MATHYPRE, PETSC_MATGENERIC } |
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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double | Dot (const Vector &x, const Vector &y) const |
double | Norm (const Vector &x) const |
MINRES method.
Definition at line 221 of file solvers.hpp.
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inline |
Definition at line 228 of file solvers.hpp.
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inline |
Definition at line 231 of file solvers.hpp.
Operator application: y=A(x)
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Implements mfem::Operator.
Definition at line 1055 of file solvers.cpp.
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virtual |
Also calls SetOperator for the preconditioner if there is one.
Reimplemented from mfem::IterativeSolver.
Definition at line 1041 of file solvers.cpp.
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inlinevirtual |
This should be called before SetOperator.
Reimplemented from mfem::IterativeSolver.
Definition at line 234 of file solvers.hpp.
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mutableprotected |
Definition at line 224 of file solvers.hpp.
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mutableprotected |
Definition at line 225 of file solvers.hpp.
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mutableprotected |
Definition at line 224 of file solvers.hpp.
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mutableprotected |
Definition at line 224 of file solvers.hpp.
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mutableprotected |
Definition at line 224 of file solvers.hpp.
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mutableprotected |
Definition at line 224 of file solvers.hpp.