MFEM
v4.1.0
Finite element discretization library
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Direct sparse solver using UMFPACK. More...
#include <solvers.hpp>
Public Member Functions | |
UMFPackSolver (bool _use_long_ints=false) | |
For larger matrices, if the solver fails, set the parameter _use_long_ints = true. More... | |
UMFPackSolver (SparseMatrix &A, bool _use_long_ints=false) | |
Factorize the given SparseMatrix using the defaults. For larger matrices, if the solver fails, set the parameter _use_long_ints = true. More... | |
virtual void | SetOperator (const Operator &op) |
Factorize the given Operator op which must be a SparseMatrix. More... | |
void | SetPrintLevel (int print_lvl) |
Set the print level field in the Control data member. More... | |
virtual void | Mult (const Vector &b, Vector &x) const |
Operator application: y=A(x) . More... | |
virtual void | MultTranspose (const Vector &b, Vector &x) const |
Action of the transpose operator: y=A^t(x) . The default behavior in class Operator is to generate an error. More... | |
virtual | ~UMFPackSolver () |
Public Member Functions inherited from mfem::Solver | |
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... | |
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 MemoryClass | GetMemoryClass () const |
Return the MemoryClass preferred by the Operator. 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... | |
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 * | 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... | |
Public Attributes | |
double | Control [UMFPACK_CONTROL] |
double | Info [UMFPACK_INFO] |
Public Attributes inherited from mfem::Solver | |
bool | iterative_mode |
If true, use the second argument of Mult() as an initial guess. More... | |
Protected Member Functions | |
void | Init () |
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, taking in input/output Prolongation matrices. More... | |
Protected Attributes | |
bool | use_long_ints |
SparseMatrix * | mat |
void * | Numeric |
SuiteSparse_long * | AI |
SuiteSparse_long * | AJ |
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... | |
Additional Inherited Members | |
Public Types inherited from mfem::Operator | |
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... | |
Direct sparse solver using UMFPACK.
Definition at line 580 of file solvers.hpp.
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inline |
For larger matrices, if the solver fails, set the parameter _use_long_ints = true.
Definition at line 596 of file solvers.hpp.
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Factorize the given SparseMatrix using the defaults. For larger matrices, if the solver fails, set the parameter _use_long_ints = true.
Definition at line 601 of file solvers.hpp.
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virtual |
Definition at line 2448 of file solvers.cpp.
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protected |
Definition at line 2270 of file solvers.cpp.
Operator application: y=A(x)
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Implements mfem::Operator.
Definition at line 2382 of file solvers.cpp.
Action of the transpose operator: y=A^t(x)
. The default behavior in class Operator is to generate an error.
Reimplemented from mfem::Operator.
Definition at line 2414 of file solvers.cpp.
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virtual |
Factorize the given Operator op which must be a SparseMatrix.
The factorization uses the parameters set in the Control data member.
Implements mfem::Solver.
Definition at line 2285 of file solvers.cpp.
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inline |
Set the print level field in the Control data member.
Definition at line 612 of file solvers.hpp.
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protected |
Definition at line 586 of file solvers.hpp.
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protected |
Definition at line 586 of file solvers.hpp.
double mfem::UMFPackSolver::Control[UMFPACK_CONTROL] |
Definition at line 591 of file solvers.hpp.
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mutable |
Definition at line 592 of file solvers.hpp.
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protected |
Definition at line 584 of file solvers.hpp.
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Definition at line 585 of file solvers.hpp.
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Definition at line 583 of file solvers.hpp.