00001 // $Id: NOX_Direction_NonlinearCG.H,v 1.15 2007/06/21 16:22:46 rhoope Exp $ 00002 // $Source: /space/CVS/Trilinos/packages/nox/src/NOX_Direction_NonlinearCG.H,v $ 00003 00004 //@HEADER 00005 // ************************************************************************ 00006 // 00007 // NOX: An Object-Oriented Nonlinear Solver Package 00008 // Copyright (2002) Sandia Corporation 00009 // 00010 // LOCA: Library of Continuation Algorithms Package 00011 // Copyright (2005) Sandia Corporation 00012 // 00013 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive 00014 // license for use of this work by or on behalf of the U.S. Government. 00015 // 00016 // This library is free software; you can redistribute it and/or modify 00017 // it under the terms of the GNU Lesser General Public License as 00018 // published by the Free Software Foundation; either version 2.1 of the 00019 // License, or (at your option) any later version. 00020 // 00021 // This library is distributed in the hope that it will be useful, but 00022 // WITHOUT ANY WARRANTY; without even the implied warranty of 00023 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00024 // Lesser General Public License for more details. 00025 // 00026 // You should have received a copy of the GNU Lesser General Public 00027 // License along with this library; if not, write to the Free Software 00028 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00029 // USA 00030 // 00031 // Questions? Contact Roger Pawlowski (rppawlo@sandia.gov) or 00032 // Eric Phipps (etphipp@sandia.gov), Sandia National Laboratories. 00033 // ************************************************************************ 00034 // CVS Information 00035 // $Source: /space/CVS/Trilinos/packages/nox/src/NOX_Direction_NonlinearCG.H,v $ 00036 // $Author: rhoope $ 00037 // $Date: 2007/06/21 16:22:46 $ 00038 // $Revision: 1.15 $ 00039 // ************************************************************************ 00040 //@HEADER 00041 00042 #ifndef SOLVER_NONLINEARCG_H 00043 #define SOLVER_NONLINEARCG_H 00044 00045 #include "NOX_Direction_Generic.H" // base class 00046 00047 // Forward declaration 00048 namespace NOX { 00049 class Utils; 00050 class GlobalData; 00051 } 00052 00053 namespace NOX { 00054 namespace Direction { 00055 00057 00154 class NonlinearCG : public Generic { 00155 00156 public: 00157 00159 NonlinearCG(const Teuchos::RCP<NOX::GlobalData>& gd, 00160 Teuchos::ParameterList& params); 00161 00163 virtual ~NonlinearCG(); 00164 00166 virtual bool reset(const Teuchos::RCP<NOX::GlobalData>& gd, 00167 Teuchos::ParameterList& p); 00168 00170 virtual bool compute(Abstract::Vector& dir, Abstract::Group& grp, 00171 const Solver::Generic& solver); 00172 00173 // derived 00174 virtual bool compute(NOX::Abstract::Vector& dir, NOX::Abstract::Group& grp, 00175 const NOX::Solver::LineSearchBased& solver); 00176 00177 private: 00178 00180 Teuchos::RCP<NOX::GlobalData> globalDataPtr; 00181 00183 Teuchos::RCP<NOX::Utils> utils; 00184 00186 const Abstract::Group* oldSolnPtr; 00187 00189 Teuchos::RCP<Abstract::Vector> tmpVecPtr; 00190 00192 00195 Teuchos::RCP<Abstract::Vector> oldDirPtr; 00196 00198 00201 Teuchos::RCP<Abstract::Vector> oldDescentDirPtr; 00202 00204 Teuchos::RCP<Abstract::Vector> diffVecPtr; 00205 00207 Teuchos::ParameterList* paramsPtr; 00208 00210 double beta; 00211 00213 int niter; 00214 00216 int restartFrequency; 00217 00219 bool doPrecondition; 00220 00222 bool usePRbeta; 00223 00224 }; 00225 } // namespace Direction 00226 } // namespace NOX 00227 00228 #endif