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fei_Solver.cpp
00001 /*
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00003 // ************************************************************************
00004 //             FEI: Finite Element Interface to Linear Solvers
00005 //                  Copyright (2005) Sandia Corporation.
00006 //
00007 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation, the
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00009 //
00010 // Redistribution and use in source and binary forms, with or without
00011 // modification, are permitted provided that the following conditions are
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00014 // 1. Redistributions of source code must retain the above copyright
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00016 //
00017 // 2. Redistributions in binary form must reproduce the above copyright
00018 // notice, this list of conditions and the following disclaimer in the
00019 // documentation and/or other materials provided with the distribution.
00020 //
00021 // 3. Neither the name of the Corporation nor the names of the
00022 // contributors may be used to endorse or promote products derived from
00023 // this software without specific prior written permission.
00024 //
00025 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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00037 // Questions? Contact Alan Williams (william@sandia.gov) 
00038 //
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00040 // @HEADER
00041 */
00042 
00043 
00044 #include <fei_macros.hpp>
00045 
00046 #include <fei_Solver.hpp>
00047 
00048 #include <fei_Matrix_Impl.hpp>
00049 #include <fei_MatrixReducer.hpp>
00050 #include <snl_fei_LinearSystem_FEData.hpp>
00051 #include <fei_ParameterSet.hpp>
00052 #include <fei_utils.hpp>
00053 
00054 #undef fei_file
00055 #define fei_file "fei_Solver.cpp"
00056 #include <fei_ErrMacros.hpp>
00057 
00058 //----------------------------------------------------------------------------
00059 int fei_Solver_solve(fei::LinearSystem* linearSystem,
00060          fei::Matrix* preconditioningMatrix,
00061          int numParams,
00062          const char* const* solverParams,
00063          int& iterationsTaken,
00064          int& status)
00065 {
00066   fei::SharedPtr<fei::Matrix> matrix = linearSystem->getMatrix();
00067   fei::Matrix_Impl<LinearSystemCore>* lscmatrix =
00068     dynamic_cast<fei::Matrix_Impl<LinearSystemCore>*>(matrix.get());
00069 
00070   fei::MatrixReducer* matred = dynamic_cast<fei::MatrixReducer*>(matrix.get());
00071   if (matred != NULL) {
00072     lscmatrix = dynamic_cast<fei::Matrix_Impl<LinearSystemCore>*>(matred->getTargetMatrix().get());
00073   }
00074 
00075   if (lscmatrix != NULL) {
00076     fei::SharedPtr<LinearSystemCore> linSysCore = lscmatrix->getMatrix();
00077 
00078     char** params = const_cast<char**>(solverParams);
00079     CHK_ERR( linSysCore->parameters(numParams, params) );
00080 
00081     CHK_ERR( linSysCore->launchSolver(status, iterationsTaken) );
00082 
00083     return(0);
00084   }
00085 
00086   snl_fei::LinearSystem_FEData* fedlinsys =
00087     dynamic_cast<snl_fei::LinearSystem_FEData*>(linearSystem);
00088   if (fedlinsys != NULL) {
00089     fei::SharedPtr<FiniteElementData> fedata = fedlinsys->getFiniteElementData();
00090 
00091     CHK_ERR( fedata->launchSolver(status, iterationsTaken) );
00092 
00093     return(0);
00094   }
00095 
00096   ERReturn(-1);
00097 }
00098 
00099 //----------------------------------------------------------------------------
00100 int fei::Solver::solve(fei::LinearSystem* linearSystem,
00101          fei::Matrix* preconditioningMatrix,
00102          const fei::ParameterSet& parameterSet,
00103          int& iterationsTaken,
00104          int& status)
00105 {
00106   int numParams = 0;
00107   const char** paramStrings = NULL;
00108   std::vector<std::string> stdstrings;
00109   fei::utils::convert_ParameterSet_to_strings(&parameterSet, stdstrings);
00110   fei::utils::strings_to_char_ptrs(stdstrings, numParams, paramStrings);
00111 
00112   int err = fei_Solver_solve(linearSystem, preconditioningMatrix,
00113       numParams, paramStrings,
00114       iterationsTaken, status);
00115 
00116   delete [] paramStrings;
00117 
00118   return(err);
00119 }
00120 
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