/usr/include/trilinos/Amesos_Control.h is in libtrilinos-amesos-dev 12.4.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | #ifndef AMESOS_CONTROL_H
#define AMESOS_CONTROL_H
#include "Teuchos_ParameterList.hpp"
using namespace Teuchos;
/*!
\class Amesos_Control
\brief Amesos_Control: Container for some control variables.
\author Marzio Sala, SNL 9214
\date Last updated on 24-May-05 (Champions' League Final day)
*/
class Amesos_Control
{
public:
//! Default constructor.
Amesos_Control()
{
AddToDiag_ = 0.0;
AddZeroToDiag_ = false;
rcond_threshold_ = 1e-12;
refactorize_ = false;
MaxProcesses_ = -1;
ScaleMethod_ = 0;
Reindex_ = 0;
}
//! Default destructor.
~Amesos_Control() {};
void SetControlParameters( const Teuchos::ParameterList &ParameterList ) ;
//! Add \c this value to the diagonal.
double AddToDiag_;
bool refactorize_; // if true, and if the Symbolic and Numeric
// objects have already been created, then
// attempt to "refactorize" (factor the matrix
// with no changes to the pivot order since the
// last call the klu_btf_factor).
//! If error is greater than \c this value, perform symbolic and
//! numeric factorization with full partial pivoting
double rcond_threshold_; // if we refactorize, the factorization may suffer
// in numeric quality. We compute rcond =
// min (abs (diag (U))) / max (abs (diag (U))).
// If this ratio is <= rcond_threshold_, then
// the "refactorization" is scrapped, and we factor
// with full partial pivoting instead.
int ScaleMethod_; // most methods (KLU, UMFPACK, Mumps, ...) can scale
// the input matrix prior to factorization. This can
// improve pivoting, reduce fill-in, and lead to a
// better quality factorization. The options are:
// 0: no scaling
// 1: use the default method for the specific package
// 2: use the method's 1st alternative (if it has one)
// 3: use the method's 2nd alternative, and so on.
//
// Amesos_Klu is, at present, the only code which implements this
//! Adds zero to diagonal of redistributed matrix (some solvers choke on a matrix with a partly empty diag)
bool AddZeroToDiag_;
//! Set the matrix property.
/*! Matrix property can be
- 0 : general unsymmetric matrix;
- 1 : SPD;
- 2 : general symmetric matrix.
UNUSED - See bug #2331 and bug #2332
*/
int MatrixProperty_;
int MaxProcesses_; // default is -1 ; If positive, distribute
// problem over MaxProcesses
//! If true, the Amesos class should reindex the matrix to standard indexing (i.e. 0-n-1)
//! at present, only Amesos_Klu supports this option.
bool Reindex_ ;
};
#endif
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