/usr/include/trilinos/Tifpack_Condest.hpp is in libtrilinos-dev 10.4.0.dfsg-1ubuntu2.
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 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 | /*@HEADER
// ***********************************************************************
//
// Tifpack: Tempated Object-Oriented Algebraic Preconditioner Package
// Copyright (2009) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//@HEADER
*/
#ifndef TIFPACK_CONDEST_HPP
#define TIFPACK_CONDEST_HPP
#include "Tifpack_ConfigDefs.hpp"
#include "Tifpack_CondestType.hpp"
#include "Tifpack_Preconditioner.hpp"
#include <Teuchos_Ptr.hpp>
namespace Tifpack {
template<class Scalar,class LocalOrdinal,class GlobalOrdinal, class Node>
typename Teuchos::ScalarTraits<Scalar>::magnitudeType
Condest(const Tifpack::Preconditioner<Scalar,LocalOrdinal,GlobalOrdinal,Node>& TIFP,
const Tifpack::CondestType CT,
const int MaxIters = 1550,
const typename Teuchos::ScalarTraits<Scalar>::magnitudeType& Tol = 1e-9,
const Teuchos::Ptr<const Tpetra::RowMatrix<Scalar,LocalOrdinal,GlobalOrdinal,Node> > &matrix_in = Teuchos::null)
{
typedef typename Teuchos::ScalarTraits<Scalar>::magnitudeType magnitudeType;
magnitudeType ConditionNumberEstimate = -1.0;
Teuchos::Ptr<const Tpetra::RowMatrix<Scalar,LocalOrdinal,GlobalOrdinal,Node> > matrix = matrix_in;
if (matrix_in == Teuchos::null) {
matrix = TIFP.getMatrix().ptr();
}
if (CT == Tifpack::Cheap) {
// Create a vector with all values equal to one
Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node> Ones(TIFP.getDomainMap());
Ones.putScalar(1.0);
// Create the vector of results
Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node> OnesResult(TIFP.getRangeMap());
// Compute the effect of the solve on the vector of ones
TIFP.apply(Ones, OnesResult);
ConditionNumberEstimate = OnesResult.normInf();
}
else if (CT == Tifpack::CG) {
#ifdef HAVE_TIFPACK_AZTECOO
this code not yet converted!!!
Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node> LHS(IFP.getDomainMap());
LHS.PutScalar(0.0);
Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node> RHS(IFP.getRangeMap());
RHS.Random();
Tpetra_LinearProblem Problem;
Problem.SetOperator(matrix);
Problem.SetLHS(&LHS);
Problem.SetRHS(&RHS);
AztecOO Solver(Problem);
Solver.SetAztecOption(AZ_output,AZ_none);
Solver.SetAztecOption(AZ_solver,AZ_cg_condnum);
Solver.Iterate(MaxIters,Tol);
const double* status = Solver.GetAztecStatus();
ConditionNumberEstimate = status[AZ_condnum];
#endif
} else if (CT == Tifpack::GMRES) {
#ifdef HAVE_TIFPACK_AZTECOO
this code not yet converted!!!
Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node> LHS(IFP.getDomainMap());
LHS.PutScalar(0.0);
Tpetra::Vector<Scalar,LocalOrdinal,GlobalOrdinal,Node> RHS(IFP.getRangeMap());
RHS.Random();
Tpetra_LinearProblem Problem;
Problem.SetOperator(matrix);
Problem.SetLHS(&LHS);
Problem.SetRHS(&RHS);
AztecOO Solver(Problem);
Solver.SetAztecOption(AZ_solver,AZ_gmres_condnum);
Solver.SetAztecOption(AZ_output,AZ_none);
// the following can be problematic for large problems,
// but any restart would destroy useful information about
// the condition number.
Solver.SetAztecOption(AZ_kspace,MaxIters);
Solver.Iterate(MaxIters,Tol);
const double* status = Solver.GetAztecStatus();
ConditionNumberEstimate = status[AZ_condnum];
#endif
}
return(ConditionNumberEstimate);
}
}//namespace Tifpack
#endif // TIFPACK_CONDEST_HPP
|