MFEM  v4.3.0
Finite element discretization library
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mfem::STRUMPACKRowLocMatrix Class Reference

#include <strumpack.hpp>

Inheritance diagram for mfem::STRUMPACKRowLocMatrix:
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Collaboration diagram for mfem::STRUMPACKRowLocMatrix:
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Public Member Functions

 STRUMPACKRowLocMatrix (MPI_Comm comm, int num_loc_rows, int first_loc_row, int glob_nrows, int glob_ncols, int *I, int *J, double *data)
 
 STRUMPACKRowLocMatrix (const HypreParMatrix &hypParMat)
 
 ~STRUMPACKRowLocMatrix ()
 
void Mult (const Vector &x, Vector &y) const
 Operator application: y=A(x). More...
 
MPI_Comm GetComm () const
 
strumpack::CSRMatrixMPI
< double, int > * 
getA () const
 
- 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 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 OperatorGetGradient (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 OperatorGetProlongation () const
 Prolongation operator from linear algebra (linear system) vectors, to input vectors for the operator. NULL means identity. More...
 
virtual const OperatorGetRestriction () const
 Restriction operator from input vectors for the operator to linear algebra (linear system) vectors. NULL means identity. More...
 
virtual const OperatorGetOutputProlongation () const
 Prolongation operator from linear algebra (linear system) vectors, to output vectors for the operator. NULL means identity. More...
 
virtual const OperatorGetOutputRestrictionTranspose () const
 Transpose of GetOutputRestriction, directly available in this form to facilitate matrix-free RAP-type operators. More...
 
virtual const OperatorGetOutputRestriction () 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

- 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
}
 Enumeration defining IDs for some classes derived from Operator. 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...
 
OperatorSetupRAP (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::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...
 

Detailed Description

Definition at line 29 of file strumpack.hpp.

Constructor & Destructor Documentation

mfem::STRUMPACKRowLocMatrix::STRUMPACKRowLocMatrix ( MPI_Comm  comm,
int  num_loc_rows,
int  first_loc_row,
int  glob_nrows,
int  glob_ncols,
int *  I,
int *  J,
double *  data 
)

Creates a general parallel matrix from a local CSR matrix on each processor described by the I, J and data arrays. The local matrix should be of size (local) nrows by (global) glob_ncols. The new parallel matrix contains copies of all input arrays (so they can be deleted).

Definition at line 25 of file strumpack.cpp.

mfem::STRUMPACKRowLocMatrix::STRUMPACKRowLocMatrix ( const HypreParMatrix hypParMat)

Creates a copy of the parallel matrix hypParMat in STRUMPACK's RowLoc format. All data is copied so the original matrix may be deleted.

Definition at line 47 of file strumpack.cpp.

mfem::STRUMPACKRowLocMatrix::~STRUMPACKRowLocMatrix ( )

Definition at line 87 of file strumpack.cpp.

Member Function Documentation

strumpack::CSRMatrixMPI<double,int>* mfem::STRUMPACKRowLocMatrix::getA ( ) const
inline

Definition at line 55 of file strumpack.hpp.

MPI_Comm mfem::STRUMPACKRowLocMatrix::GetComm ( ) const
inline

Definition at line 53 of file strumpack.hpp.

void mfem::STRUMPACKRowLocMatrix::Mult ( const Vector x,
Vector y 
) const
inlinevirtual

Operator application: y=A(x).

Implements mfem::Operator.

Definition at line 47 of file strumpack.hpp.


The documentation for this class was generated from the following files: