Ipopt Documentation  
Ipopt::Ma86SolverInterface Class Reference

#include <IpMa86SolverInterface.hpp>

+ Inheritance diagram for Ipopt::Ma86SolverInterface:

Public Member Functions

 Ma86SolverInterface ()
 
 ~Ma86SolverInterface ()
 
bool InitializeImpl (const OptionsList &options, const std::string &prefix)
 Implementation of the initialization method that has to be overloaded by for each derived class. More...
 
Methods for requesting solution of the linear system.
ESymSolverStatus InitializeStructure (Index dim, Index nonzeros, const Index *ia, const Index *ja)
 Method for initializing internal structures. More...
 
double * GetValuesArrayPtr ()
 Method returning an internal array into which the nonzero elements (in the same order as ja) will be stored by the calling routine before a call to MultiSolve with a new_matrix=true (or after a return of MultiSolve with SYMSOLV_CALL_AGAIN). More...
 
ESymSolverStatus MultiSolve (bool new_matrix, const Index *ia, const Index *ja, Index nrhs, double *rhs_vals, bool check_NegEVals, Index numberOfNegEVals)
 Solve operation for multiple right hand sides. More...
 
Index NumberOfNegEVals () const
 Number of negative eigenvalues detected during last factorization. More...
 
bool IncreaseQuality ()
 Request to increase quality of solution for next solve. More...
 
bool ProvidesInertia () const
 Query whether inertia is computed by linear solver. More...
 
EMatrixFormat MatrixFormat () const
 Query of requested matrix type that the linear solver understands. More...
 
Methods related to the detection of linearly dependent

rows in a matrix

bool ProvidesDegeneracyDetection () const
 Query whether the indices of linearly dependent rows/columns can be determined by this linear solver. More...
 
ESymSolverStatus DetermineDependentRows (const Index *, const Index *, std::list< Index > &)
 This method determines the list of row indices of the linearly dependent rows. More...
 
- Public Member Functions inherited from Ipopt::SparseSymLinearSolverInterface
 SparseSymLinearSolverInterface ()
 
virtual ~SparseSymLinearSolverInterface ()
 
- Public Member Functions inherited from Ipopt::AlgorithmStrategyObject
 AlgorithmStrategyObject ()
 Default Constructor. More...
 
virtual ~AlgorithmStrategyObject ()
 Destructor. More...
 
bool Initialize (const Journalist &jnlst, IpoptNLP &ip_nlp, IpoptData &ip_data, IpoptCalculatedQuantities &ip_cq, const OptionsList &options, const std::string &prefix)
 This method is called every time the algorithm starts again - it is used to reset any internal state. More...
 
bool ReducedInitialize (const Journalist &jnlst, const OptionsList &options, const std::string &prefix)
 Reduced version of the Initialize method, which does not require special Ipopt information. More...
 
- Public Member Functions inherited from Ipopt::ReferencedObject
 ReferencedObject ()
 
virtual ~ReferencedObject ()
 
Index ReferenceCount () const
 
void AddRef (const Referencer *referencer) const
 
void ReleaseRef (const Referencer *referencer) const
 

Static Public Member Functions

static void RegisterOptions (SmartPtr< RegisteredOptions > roptions)
 

Private Types

enum  order_opts { ORDER_AUTO , ORDER_AMD , ORDER_METIS }
 

Private Attributes

int ndim_
 Number of dimensions. More...
 
double * val_
 Storage for variables. More...
 
int numneg_
 Number of negative pivots in last factorization. More...
 
Indexorder_
 Fill reducing permutation. More...
 
void * keep_
 Stores pointer to factors (only understood by Fortran code!) More...
 
bool pivtol_changed_
 indicates if pivtol has been changed More...
 
struct ma86_control control_
 
double umax_
 
int ordering_
 

Additional Inherited Members

- Public Types inherited from Ipopt::SparseSymLinearSolverInterface
enum  EMatrixFormat {
  Triplet_Format , CSR_Format_0_Offset , CSR_Format_1_Offset , CSR_Full_Format_0_Offset ,
  CSR_Full_Format_1_Offset
}
 Enum to specify sparse matrix format. More...
 
- Protected Member Functions inherited from Ipopt::AlgorithmStrategyObject
const JournalistJnlst () const
 
IpoptNLPIpNLP () const
 
IpoptDataIpData () const
 
IpoptCalculatedQuantitiesIpCq () const
 
bool HaveIpData () const
 

Detailed Description

Definition at line 23 of file IpMa86SolverInterface.hpp.

Member Enumeration Documentation

◆ order_opts

Enumerator
ORDER_AUTO 
ORDER_AMD 
ORDER_METIS 

Definition at line 26 of file IpMa86SolverInterface.hpp.

Constructor & Destructor Documentation

◆ Ma86SolverInterface()

Ipopt::Ma86SolverInterface::Ma86SolverInterface ( )
inline

Definition at line 47 of file IpMa86SolverInterface.hpp.

◆ ~Ma86SolverInterface()

Ipopt::Ma86SolverInterface::~Ma86SolverInterface ( )

Member Function Documentation

◆ RegisterOptions()

static void Ipopt::Ma86SolverInterface::RegisterOptions ( SmartPtr< RegisteredOptions roptions)
static

◆ InitializeImpl()

bool Ipopt::Ma86SolverInterface::InitializeImpl ( const OptionsList options,
const std::string &  prefix 
)
virtual

Implementation of the initialization method that has to be overloaded by for each derived class.

Implements Ipopt::SparseSymLinearSolverInterface.

◆ InitializeStructure()

ESymSolverStatus Ipopt::Ma86SolverInterface::InitializeStructure ( Index  dim,
Index  nonzeros,
const Index ia,
const Index ja 
)
virtual

Method for initializing internal structures.

Here, ndim gives the number of rows and columns of the matrix, nonzeros give the number of nonzero elements, and ia and ja give the positions of the nonzero elements, given in the matrix format determined by MatrixFormat.

Implements Ipopt::SparseSymLinearSolverInterface.

◆ GetValuesArrayPtr()

double* Ipopt::Ma86SolverInterface::GetValuesArrayPtr ( )
inlinevirtual

Method returning an internal array into which the nonzero elements (in the same order as ja) will be stored by the calling routine before a call to MultiSolve with a new_matrix=true (or after a return of MultiSolve with SYMSOLV_CALL_AGAIN).

The returned array must have space for at least nonzero elements.

Implements Ipopt::SparseSymLinearSolverInterface.

Definition at line 74 of file IpMa86SolverInterface.hpp.

◆ MultiSolve()

ESymSolverStatus Ipopt::Ma86SolverInterface::MultiSolve ( bool  new_matrix,
const Index ia,
const Index ja,
Index  nrhs,
double *  rhs_vals,
bool  check_NegEVals,
Index  numberOfNegEVals 
)
virtual

Solve operation for multiple right hand sides.

Solves the linear system A * x = b with multiple right hand sides, where A is the symmetric indefinite matrix. Here, ia and ja give the positions of the values (in the required matrix data format). The actual values of the matrix will have been given to this object by copying them into the array provided by GetValuesArrayPtr. ia and ja are identical to the ones given to InitializeStructure. The flag new_matrix is set to true, if the values of the matrix has changed, and a refactorization is required.

Returns
SYMSOLV_SUCCESS if the factorization and solves were successful, SYMSOLV_SINGULAR if the linear system is singular, and SYMSOLV_WRONG_INERTIA if check_NegEVals is true and the number of negative eigenvalues in the matrix does not match numberOfNegEVals. If SYMSOLV_CALL_AGAIN is returned, then the calling function will request the pointer for the array for storing a again (with GetValuesPtr), write the values of the nonzero elements into it, and call this MultiSolve method again with the same right-hand sides. (This can be done, for example, if the linear solver realized it does not have sufficient memory and needs to redo the factorization; e.g., for MA27.)

The number of right-hand sides is given by nrhs, the values of the right-hand sides are given in rhs_vals (one full right-hand side stored immediately after the other), and solutions are to be returned in the same array.

check_NegEVals will not be chosen true, if ProvidesInertia() returns false.

Implements Ipopt::SparseSymLinearSolverInterface.

◆ NumberOfNegEVals()

Index Ipopt::Ma86SolverInterface::NumberOfNegEVals ( ) const
inlinevirtual

Number of negative eigenvalues detected during last factorization.

Returns
the number of negative eigenvalues of the most recent factorized matrix.

This must not be called if the linear solver does not compute this quantities (see ProvidesInertia).

Implements Ipopt::SparseSymLinearSolverInterface.

Definition at line 89 of file IpMa86SolverInterface.hpp.

◆ IncreaseQuality()

bool Ipopt::Ma86SolverInterface::IncreaseQuality ( )
virtual

Request to increase quality of solution for next solve.

The calling class asks linear solver to increase quality of solution for the next solve (e.g. increase pivot tolerance).

Returns
false, if this is not possible (e.g. maximal pivot tolerance already used.)

Implements Ipopt::SparseSymLinearSolverInterface.

◆ ProvidesInertia()

bool Ipopt::Ma86SolverInterface::ProvidesInertia ( ) const
inlinevirtual

Query whether inertia is computed by linear solver.

Returns
true, if linear solver provides inertia

Implements Ipopt::SparseSymLinearSolverInterface.

Definition at line 99 of file IpMa86SolverInterface.hpp.

◆ MatrixFormat()

EMatrixFormat Ipopt::Ma86SolverInterface::MatrixFormat ( ) const
inlinevirtual

Query of requested matrix type that the linear solver understands.

Implements Ipopt::SparseSymLinearSolverInterface.

Definition at line 104 of file IpMa86SolverInterface.hpp.

◆ ProvidesDegeneracyDetection()

bool Ipopt::Ma86SolverInterface::ProvidesDegeneracyDetection ( ) const
inlinevirtual

Query whether the indices of linearly dependent rows/columns can be determined by this linear solver.

Reimplemented from Ipopt::SparseSymLinearSolverInterface.

Definition at line 113 of file IpMa86SolverInterface.hpp.

◆ DetermineDependentRows()

ESymSolverStatus Ipopt::Ma86SolverInterface::DetermineDependentRows ( const Index ,
const Index ,
std::list< Index > &   
)
inlinevirtual

This method determines the list of row indices of the linearly dependent rows.

Reimplemented from Ipopt::SparseSymLinearSolverInterface.

Definition at line 118 of file IpMa86SolverInterface.hpp.

Member Data Documentation

◆ ndim_

int Ipopt::Ma86SolverInterface::ndim_
private

Number of dimensions.

Definition at line 33 of file IpMa86SolverInterface.hpp.

◆ val_

double* Ipopt::Ma86SolverInterface::val_
private

Storage for variables.

Definition at line 34 of file IpMa86SolverInterface.hpp.

◆ numneg_

int Ipopt::Ma86SolverInterface::numneg_
private

Number of negative pivots in last factorization.

Definition at line 35 of file IpMa86SolverInterface.hpp.

◆ order_

Index* Ipopt::Ma86SolverInterface::order_
private

Fill reducing permutation.

Definition at line 36 of file IpMa86SolverInterface.hpp.

◆ keep_

void* Ipopt::Ma86SolverInterface::keep_
private

Stores pointer to factors (only understood by Fortran code!)

Definition at line 37 of file IpMa86SolverInterface.hpp.

◆ pivtol_changed_

bool Ipopt::Ma86SolverInterface::pivtol_changed_
private

indicates if pivtol has been changed

Definition at line 38 of file IpMa86SolverInterface.hpp.

◆ control_

struct ma86_control Ipopt::Ma86SolverInterface::control_
private

Definition at line 38 of file IpMa86SolverInterface.hpp.

◆ umax_

double Ipopt::Ma86SolverInterface::umax_
private

Definition at line 42 of file IpMa86SolverInterface.hpp.

◆ ordering_

int Ipopt::Ma86SolverInterface::ordering_
private

Definition at line 43 of file IpMa86SolverInterface.hpp.


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