ProblemStat.cc 53.5 KB
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/******************************************************************************
 *
 * AMDiS - Adaptive multidimensional simulations
 *
 * Copyright (C) 2013 Dresden University of Technology. All Rights Reserved.
 * Web: https://fusionforge.zih.tu-dresden.de/projects/amdis
 *
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 * Authors:
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 * Simon Vey, Thomas Witkowski, Andreas Naumann, Simon Praetorius, et al.
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *
 * This file is part of AMDiS
 *
 * See also license.opensource.txt in the distribution.
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 *
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 ******************************************************************************/
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#include <sstream>
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#include <boost/lexical_cast.hpp>
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#include "ProblemStat.h"
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#include "Serializer.h"
#include "AbstractFunction.h"
#include "Operator.h"
#include "SystemVector.h"
#include "DOFMatrix.h"
#include "FiniteElemSpace.h"
#include "Marker.h"
#include "AdaptInfo.h"
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#include "io/FileWriter.h"
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#include "CoarseningManager.h"
#include "RefinementManager.h"
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#include "DualTraverse.h"
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#include "Mesh.h"
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#include "solver/LinearSolverInterface.h"
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#include "DirichletBC.h"
#include "RobinBC.h"
#include "PeriodicBC.h"
#include "Lagrange.h"
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#include "Bubble.h"
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#include "Flag.h"
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#include "est/Estimator.h"
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#include "io/VtkWriter.h"
#include "io/ValueReader.h"
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#include "ProblemStatDbg.h"
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#include "Debug.h"
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namespace AMDiS {

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  using namespace std;
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  using boost::lexical_cast;

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  ProblemStatSeq::ProblemStatSeq(string nameStr,
				 ProblemIterationInterface *problemIteration)
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    : name(nameStr),
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      nComponents(-1),
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      nAddComponents(0),
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      nMeshes(0),
      traverseInfo(0),
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      solver(NULL),
      solution(NULL),
      rhs(NULL),
      systemMatrix(NULL),
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      useGetBound(true),
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      refinementManager(NULL),
      coarseningManager(NULL),
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      info(10),
      deserialized(false),
      computeExactError(false),
      boundaryConditionSet(false),
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      writeAsmInfo(false),
      solutionTime(0.0),
      buildTime(0.0)
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  {
    Parameters::get(name + "->components", nComponents);
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    Parameters::get(name + "->additional components", nAddComponents);
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    TEST_EXIT(nComponents > 0)("No value set for parameter \"%s->components\"!\n",
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			       name.c_str());
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    TEST_EXIT(nAddComponents >= 0)("Wrong parameter \"%s->additional components\"!\n",
				    name.c_str());
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    estimator.resize(nComponents, NULL);
    marker.resize(nComponents, NULL);
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    assembleMatrixOnlyOnce.resize(nComponents);
    assembledMatrix.resize(nComponents);
    for (int i = 0; i < nComponents; i++) {
      assembleMatrixOnlyOnce[i].resize(nComponents);
      assembledMatrix[i].resize(nComponents);
      for (int j = 0; j < nComponents; j++) {
	assembleMatrixOnlyOnce[i][j] = false;
	assembledMatrix[i][j] = false;
      }
    }
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    exactSolutionFcts.resize(nComponents);


    // === Initialize name of components. ===

    componentNames.resize(nComponents, "");
    for (int i = 0; i < nComponents; i++)
      componentNames[i] = "solution[" + lexical_cast<string>(i) + "]";

    Parameters::get(name + "->name", componentNames);
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    componentNames.resize(nComponents);

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    for (int i = 0; i < nComponents; i++)
      Parameters::get(name + "->name[" + lexical_cast<string>(i) + "]",
		      componentNames[i]);
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    Parameters::get("debug->write asm info", writeAsmInfo);
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  }

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  ProblemStatSeq::~ProblemStatSeq()
  {
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    if (rhs)
      delete rhs;
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    rhs = NULL;
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    if (solution)
      delete solution;
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    solution = NULL;
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    if (solver)
      delete solver;
    solver = NULL;
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    if (systemMatrix) {
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      for (int i = 0; i < nComponents; i++)
	for (int j = 0; j < nComponents; j++)
	  if ((*systemMatrix)[i][j]) {
	    delete (*systemMatrix)[i][j];
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	    (*systemMatrix)[i][j] = NULL;
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	  }

      delete systemMatrix;
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      systemMatrix = NULL;
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    }
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    for (unsigned int i = 0; i < meshes.size(); i++)
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      if (meshes[i]) {
// 	delete meshes[i];
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// 	meshes[i] = NULL;
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      }
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    for (unsigned int i = 0; i < estimator.size(); i++)
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      if (estimator[i]) {
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	delete estimator[i];
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	estimator[i] = NULL;
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      }
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    for (unsigned int i = 0; i < marker.size(); i++)
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      if (marker[i]) {
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	delete marker[i];
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	marker[i] = NULL;
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      }
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  }
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  void ProblemStatSeq::initialize(Flag initFlag,
				  ProblemStatSeq *adoptProblem,
				  Flag adoptFlag)
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  {
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    FUNCNAME("ProblemStat::initialize()");
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    // === create meshes ===
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    if (meshes.size() != 0) {
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      WARNING("meshes already created\n");
    } else {
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      if (initFlag.isSet(CREATE_MESH) ||
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	  (!adoptFlag.isSet(INIT_MESH) &&
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	   (initFlag.isSet(INIT_SYSTEM) || initFlag.isSet(INIT_FE_SPACE))))
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	createMesh();
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      // NOTE: why using CREATE_MESH with adoptFlag.isSet(INIT_MESH) ???
      // (since then meshes is replaced by the adoptProblem.meshes)
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      if (adoptProblem &&
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	  (adoptFlag.isSet(INIT_MESH) ||
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	   adoptFlag.isSet(INIT_SYSTEM) ||
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	   adoptFlag.isSet(INIT_FE_SPACE)))
      {
	if (meshes.size() != 0) {
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	  WARNING("meshes created, by using CREATE_MESH, but overwritten, by using adoptFlag.isSet(INIT_MESH)\n");
	}
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	meshes = adoptProblem->getMeshes();
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	componentMeshes.clear();
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	if (meshes.size() == 1)
	  componentMeshes.resize(nComponents, meshes[0]);
	else if (adoptProblem->getNumComponents() >= nComponents) {
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	  componentMeshes.resize(nComponents);
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	  std::copy(adoptProblem->componentMeshes.begin(),
		    adoptProblem->componentMeshes.begin() + nComponents,
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		    componentMeshes.begin());
	} else {
	  componentMeshes.resize(nComponents, meshes[0]);
	  WARNING("componentMeshes may not be derived correctly from the adoptProblem. You have to do this manually!\n");
	}
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	if (nAddComponents > 0) {
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	  WARNING("Additional meshes can not be adopted from adoptProblem. You have to initialize these meshes manually!\n");
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	}
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      }
    }

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    if (meshes.size() == 0)
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      WARNING("no mesh created\n");

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    // === create refinement/corasening-manager ===
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    if (refinementManager != NULL && coarseningManager != NULL) {
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      WARNING("refinement-/coarseningmanager already created\n");
    } else {
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      if (initFlag.isSet(CREATE_MESH) ||
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          (!adoptFlag.isSet(INIT_MESH) &&
           (initFlag.isSet(INIT_SYSTEM) || initFlag.isSet(INIT_FE_SPACE))))
        createRefCoarseManager();

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      if (adoptProblem &&
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          (adoptFlag.isSet(INIT_MESH) ||
           adoptFlag.isSet(INIT_SYSTEM) ||
           adoptFlag.isSet(INIT_FE_SPACE))) {
        refinementManager = adoptProblem->refinementManager;
        coarseningManager = adoptProblem->coarseningManager;
      }
    }

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    if (refinementManager == NULL || coarseningManager == NULL)
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      WARNING("no refinement-/coarseningmanager created\n");

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    // === create fespace ===
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    if (feSpaces.size() != 0) {
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      WARNING("feSpaces already created\n");
    } else {
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      if (initFlag.isSet(INIT_FE_SPACE) ||
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	  (initFlag.isSet(INIT_SYSTEM) && !adoptFlag.isSet(INIT_FE_SPACE)))
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	createFeSpace(NULL);
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      if (adoptProblem &&
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	  (adoptFlag.isSet(INIT_FE_SPACE) || adoptFlag.isSet(INIT_SYSTEM)))
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      {
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	feSpaces = adoptProblem->getFeSpaces();
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	traverseInfo = adoptProblem->traverseInfo;
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	componentSpaces.clear();
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	if (feSpaces.size() == 1)
	  componentSpaces.resize(nComponents, feSpaces[0]);
	else if (adoptProblem->getNumComponents() >= nComponents) {
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	  componentSpaces.resize(nComponents);
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	  std::copy(adoptProblem->componentSpaces.begin(),
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		    adoptProblem->componentSpaces.begin() + nComponents,
		    componentSpaces.begin());
	} else {
	  componentSpaces.resize(nComponents, feSpaces[0]);
	  WARNING("componentSpaces may not be derived correctly from the adoptProblem. You have to do this manually!\n");
	}
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	if (nAddComponents > 0) {
	  WARNING("Additional feSpaces can not be adopted from adoptProblem. You have to initialize these fespaces manually!\n");
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	}
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      }
    }

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    if (feSpaces.size() == 0)
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      WARNING("no feSpace created\n");

    // === create system ===
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    if (initFlag.isSet(INIT_SYSTEM))
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      createMatricesAndVectors();
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    if (adoptProblem && adoptFlag.isSet(INIT_SYSTEM)) {
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      solution = adoptProblem->getSolution();
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      rhs = adoptProblem->getRhs();
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      systemMatrix = adoptProblem->getSystemMatrix();
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    }

    // === create solver ===
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    if (solver) {
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      WARNING("solver already created\n");
    } else {
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      if (initFlag.isSet(INIT_SOLVER))
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	createSolver();
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      if (adoptProblem && adoptFlag.isSet(INIT_SOLVER)) {
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	TEST_EXIT(!solver)("solver already created\n");
	solver = adoptProblem->getSolver();
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      }
    }

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    if (!solver)
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      WARNING("no solver created\n");

    // === create estimator ===
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    if (initFlag.isSet(INIT_ESTIMATOR))
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      createEstimator();
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    if (adoptProblem && adoptFlag.isSet(INIT_ESTIMATOR))
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      estimator = adoptProblem->getEstimators();
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    // === create marker ===
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    if (initFlag.isSet(INIT_MARKER))
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      createMarker();
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    if (adoptProblem && adoptFlag.isSet(INIT_MARKER))
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      marker = adoptProblem->getMarkers();
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    // === create file writer ===
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    if (initFlag.isSet(INIT_FILEWRITER))
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      createFileWriter();
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    // === read serialization and init mesh ===
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    // There are two possiblities where the user can define a serialization
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    // to be read from disk. Either by providing the parameter -rs when
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    // executing the program or in the init file. The -rs parameter is always
    // checked first, because it can be added automatically when rescheduling
    // the program before timeout of the runqueue.
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    int readSerialization = 0;
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    string serializationFilename = "";
    Parameters::get("argv->rs", serializationFilename);
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    // If the parameter -rs is set, we do nothing here, because the problem will be
    // deserialized in the constructor of a following AdaptInstationary initialization.
    if (!serializationFilename.compare("")) {
      int readSerializationWithAdaptInfo = 0;

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      Parameters::get(name + "->input->read serialization", readSerialization);
      Parameters::get(name + "->input->serialization with adaptinfo",
		      readSerializationWithAdaptInfo);
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      // The serialization file is only read, if the adaptInfo part should not be used.
      // If the adaptInfo part should be also read, the serialization file will be read
      // in the constructor of the AdaptInstationary problem, because we do not have here
      // the adaptInfo object.
      if (readSerialization && !readSerializationWithAdaptInfo) {
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	Parameters::get(name + "->input->serialization filename",
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			serializationFilename);
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	TEST_EXIT(serializationFilename != "")("no serialization file\n");

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	// If AMDiS is compiled for parallel computations, the deserialization is
	// controlled by the parallel problem object.
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#ifndef HAVE_PARALLEL_DOMAIN_AMDIS
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	MSG("Deserialization from file: %s\n", serializationFilename.c_str());
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	ifstream in(serializationFilename.c_str());
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	// Read the revision number of the AMDiS version which was used to create
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	// the serialization file.
	int revNumber = -1;
	SerUtil::deserialize(in, revNumber);

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	deserialize(in);
	in.close();
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#endif
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	deserialized = true;
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      } else {
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	int globalRefinements = 0;
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	// If AMDiS is compiled for parallel computations, the global refinements are
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	// ignored here. Later, each rank will add the global refinements to its
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	// private mesh.
#ifndef HAVE_PARALLEL_DOMAIN_AMDIS
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	Parameters::get(meshes[0]->getName() + "->global refinements",
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			globalRefinements);
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#endif
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	bool initMesh = initFlag.isSet(INIT_MESH);
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	// Initialize the meshes if there is no serialization file.
	for (int i = 0; i < static_cast<int>(meshes.size()); i++)
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	  if (initMesh && meshes[i] && !(meshes[i]->isInitialized()))
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	    meshes[i]->initialize();
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	// === read value file and use it for the mesh values ===
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	string valueFilename("");
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	Parameters::get(meshes[0]->getName() + "->value file name", valueFilename);
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	if (valueFilename.length())
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	  io::ValueReader::readValue(valueFilename,
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				 meshes[0],
				 solution->getDOFVector(0),
				 meshes[0]->getMacroFileInfo());

	// === do global refinements ===
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	for (unsigned int i = 0; i < meshes.size(); i++)
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	  if (initMesh && meshes[i])
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	    refinementManager->globalRefine(meshes[i], globalRefinements);
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      }
    }

    doOtherStuff();
  }

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  void ProblemStatSeq::createMesh()
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  {
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    FUNCNAME("ProblemStat::createMesh()");
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    map<int, Mesh*> meshForRefinementSet;

    string meshName("");
    Parameters::get(name + "->mesh", meshName);
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    TEST_EXIT(meshName != "")("No mesh name specified for \"%s->mesh\"!\n",
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			      name.c_str());
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    int dim = 0;
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    Parameters::get(name + "->dim", dim);
    TEST_EXIT(dim)("No problem dimension specified for \"%s->dim\"!\n",
		   name.c_str());
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    componentMeshes.resize(nComponents + nAddComponents);
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    for (int i = 0; i < nComponents + nAddComponents; i++) {
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      int refSet = -1;
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      Parameters::get(name + "->refinement set[" + lexical_cast<string>(i) + "]",
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		      refSet);
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      if (refSet < 0)
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	refSet = 0;
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      if (meshForRefinementSet[refSet] == NULL) {
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	Mesh *newMesh = new Mesh(meshName, dim);
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	meshForRefinementSet[refSet] = newMesh;
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	meshes.push_back(newMesh);
	nMeshes++;
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      }
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      componentMeshes[i] = meshForRefinementSet[refSet];
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    }
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  }


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  void ProblemStatSeq::createRefCoarseManager()
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  {
    FUNCNAME("ProblemStat::createRefCoarseManager()");

    int dim = 0;
    Parameters::get(name + "->dim", dim);
    TEST_EXIT(dim)("No problem dimension specified for \"%s->dim\"!\n",
                   name.c_str());
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    switch (dim) {
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    case 1:
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      refinementManager = new RefinementManager1d();
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      coarseningManager = new CoarseningManager1d();
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      break;
    case 2:
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      refinementManager = new RefinementManager2d();
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      coarseningManager = new CoarseningManager2d();
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      break;
    case 3:
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      refinementManager = new RefinementManager3d();
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      coarseningManager = new CoarseningManager3d();
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      break;
    default:
      ERROR_EXIT("invalid dim!\n");
    }
  }

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  void ProblemStatSeq::createFeSpace(DOFAdmin *admin)
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  {
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    FUNCNAME("ProblemStat::createFeSpace()");
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    map<pair<Mesh*, string>, FiniteElemSpace*> feSpaceMap;
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    int dim = -1;
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    Parameters::get(name + "->dim", dim);
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    TEST_EXIT(dim != -1)("no problem dimension specified!\n");
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    componentSpaces.resize(nComponents + nAddComponents, NULL);
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    traverseInfo.resize(nComponents);
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    for (int i = 0; i < nComponents + nAddComponents; i++) {
      if (componentSpaces[i] != NULL) {
	WARNING("feSpace already created\n");
	continue;
      }
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      string componentString = "[" + boost::lexical_cast<string>(i) + "]";
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      string feSpaceName = "";
      string initFileStr = name + "->feSpace" + componentString;
      Parameters::get(initFileStr, feSpaceName);
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      // synonym for "feSpace"
      if (feSpaceName.size() == 0) {
	initFileStr = name + "->finite element space" + componentString;
	Parameters::get(initFileStr, feSpaceName);
      }
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      // for backward compatibility also accept the old syntax
      if (feSpaceName.size() == 0) {
	int degree = 1;
	initFileStr = name + "->polynomial degree" + componentString;
	Parameters::get(initFileStr, degree);
	TEST_EXIT(degree > 0)
	  ("Poynomial degree in component %d must be larger than zero!\n", i);
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	feSpaceName = "Lagrange" + boost::lexical_cast<string>(degree);
      }
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      if (feSpaceMap[pair<Mesh*, string>(componentMeshes[i], feSpaceName)] == NULL) {
	BasisFunctionCreator *basisFctCreator =
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	dynamic_cast<BasisFunctionCreator*>(CreatorMap<BasisFunction>::getCreator(feSpaceName, initFileStr));
	TEST_EXIT(basisFctCreator)
	  ("No valid basisfunction type found in parameter \"%s\"\n", initFileStr.c_str());
	basisFctCreator->setDim(dim);
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	FiniteElemSpace *newFeSpace =
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	  FiniteElemSpace::provideFeSpace(admin, basisFctCreator->create(),
					  componentMeshes[i], "FeSpace" + componentString + " (" + feSpaceName + ")");

	feSpaceMap[pair<Mesh*, string>(componentMeshes[i], feSpaceName)] = newFeSpace;
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	feSpaces.push_back(newFeSpace);
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      }
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      componentSpaces[i] = feSpaceMap[pair<Mesh*, string>(componentMeshes[i], feSpaceName)];
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    }

    for (int i = 0; i < nComponents; i++) {
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      for (int j = 0; j < nComponents; j++)
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	traverseInfo.getMatrix(i, j).setFeSpace(componentSpaces[i], componentSpaces[j]);
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      traverseInfo.getVector(i).setFeSpace(componentSpaces[i]);
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    }

    // create dof admin for vertex dofs if neccessary
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    for (int i = 0; i < static_cast<int>(meshes.size()); i++) {
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      if (meshes[i]->getNumberOfDofs(VERTEX) == 0) {
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	DimVec<int> ln_dof(meshes[i]->getDim(), DEFAULT_VALUE, 0);
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	ln_dof[VERTEX] = 1;
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	meshes[i]->createDOFAdmin("vertex dofs", ln_dof);
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      }
    }
  }

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  void ProblemStatSeq::createMatricesAndVectors()
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  {
    // === create vectors and system matrix ===

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    systemMatrix = new Matrix<DOFMatrix*>(nComponents, nComponents);
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    systemMatrix->set((DOFMatrix*)(NULL));
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    rhs = new SystemVector("rhs", componentSpaces, nComponents);
    solution = new SystemVector("solution", componentSpaces, nComponents);
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    for (int i = 0; i < nComponents; i++) {
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      (*systemMatrix)[i][i] = new DOFMatrix(componentSpaces[i],
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					    componentSpaces[i], "A_ii");
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      (*systemMatrix)[i][i]->setCoupleMatrix(false);
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      //set parallel synchronization later in ParalleProblemStat
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      rhs->setDOFVector(i, new DOFVector<double>(componentSpaces[i],
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						 "rhs[" + lexical_cast<string>(i) + "]", false));
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      //set parallel synchronization later in ParalleProblemStat
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      solution->setDOFVector(i, new DOFVector<double>(componentSpaces[i],
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      						      componentNames[i], false));
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      solution->getDOFVector(i)->setCoarsenOperation(COARSE_INTERPOL);
      solution->getDOFVector(i)->set(0.0);
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    }
  }

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  void ProblemStatSeq::createSolver()
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  {
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    FUNCNAME("ProblemStat::createSolver()");
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    // definition of standard-backends
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#if defined HAVE_PARALLEL_PETSC
    string backend("p_petsc");
#elif defined HAVE_PARALLEL_MTL
    string backend("p_mtl");
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#elif defined HAVE_SEQ_PETSC
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    string backend("petsc");
#else
    string backend("mtl");
#endif
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    // === read backend-name ===
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    string initFileStr = name + "->solver";
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    Parameters::get(initFileStr + "->backend", backend);
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    // === read solver-name ===
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    string solverType("0");
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    Parameters::get(initFileStr, solverType);
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    if (backend != "0" && backend != "no" && backend != "")
      solverType = backend + "_" + solverType;
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    // === create solver ===
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    LinearSolverCreator *solverCreator =
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      dynamic_cast<LinearSolverCreator*>(CreatorMap<LinearSolverInterface>::getCreator(solverType, initFileStr));
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    TEST_EXIT(solverCreator)
      ("No valid solver type found in parameter \"%s\"\n", initFileStr.c_str());
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    solverCreator->setName(initFileStr);
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    solver = solverCreator->create();
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  }

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  void ProblemStatSeq::createEstimator()
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  {
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    FUNCNAME("ProblemStat::createEstimator()");
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    // create and set leaf data prototype
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    for (unsigned int i = 0; i < meshes.size(); i++)
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      meshes[i]->setElementDataPrototype
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	(new LeafDataEstimatableVec(new LeafDataCoarsenableVec));
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    for (int i = 0; i < nComponents; i++) {
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      TEST_EXIT(estimator[i] == NULL)("estimator already created\n");
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      string estName =
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	name + "->estimator[" + boost::lexical_cast<string>(i) + "]";
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      // === create estimator ===
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      string estimatorType("0");
      Parameters::get(estName, estimatorType);
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      EstimatorCreator *estimatorCreator =
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	dynamic_cast<EstimatorCreator*>(CreatorMap<Estimator>::getCreator(estimatorType, estName));
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      if (estimatorCreator) {
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	estimatorCreator->setName(estName);
	estimatorCreator->setRow(i);
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	estimatorCreator->setSolution(solution->getDOFVector(i));
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	estimator[i] = estimatorCreator->create();
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      }


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      if (estimator[i])
	for (int j = 0; j < nComponents; j++)
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	  estimator[i]->addSystem((*systemMatrix)[i][j],
				  solution->getDOFVector(j),
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				  rhs->getDOFVector(i));      // NOTE: hier eventuell (i) statt (j) ??? --> corrected
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    }
  }

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  void ProblemStatSeq::createMarker()
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  {
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    int nMarkersCreated = 0;
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    for (int i = 0; i < nComponents; i++) {
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      marker[i] = Marker::createMarker
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	(name + "->marker[" + boost::lexical_cast<string>(i) + "]", i);
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      if (marker[i]) {
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	nMarkersCreated++;

	// If there is more than one marker, and all components are defined
	// on the same mesh, the maximum marking has to be enabled.
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 	if (nMarkersCreated > 1 && nMeshes == 1)
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 	  marker[i]->setMaximumMarking(true);
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      }
    }
  }

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  void ProblemStatSeq::createFileWriter()
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  {
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    FUNCNAME("ProblemStat::createFileWriter()");
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    // Create one filewriter for all components of the problem
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    string numberedName  = name + "->output";
    string filename = "";
    Parameters::get(numberedName + "->filename", filename);
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    if (filename != "") {
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      vector< DOFVector<double>* > solutionList(nComponents);
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      for (int i = 0; i < nComponents; i++) {
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	TEST_EXIT(componentMeshes[0] == componentMeshes[i])
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	  ("All Meshes have to be equal to write a vector file.\n");

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	solutionList[i] = solution->getDOFVector(i);
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      }

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      fileWriters.push_back(new FileWriter(numberedName,
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					   componentMeshes[0],
					   solutionList));
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    }

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    // Create own filewriters for each component of the problem
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    for (int i = 0; i < nComponents; i++) {
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      numberedName = name + "->output[" + boost::lexical_cast<string>(i) + "]";
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      filename = "";
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      Parameters::get(numberedName + "->filename", filename);
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      if (filename != "")
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	fileWriters.push_back(new FileWriter(numberedName,
					     componentMeshes[i],
					     solution->getDOFVector(i)));
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    }
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    // create a filewrite for groups of components to write vector-valued output
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    int nVectors = 0;
    Parameters::get(name + "->output->num vectors", nVectors);
    if (nVectors > 0) {
      for (int j = 0; j < nVectors; j++) {
	numberedName = name + "->output->vector[" + boost::lexical_cast<string>(j) + "]";
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	filename = "";
	Parameters::get(numberedName + "->filename", filename);
	std::string componentName = "";
	Parameters::get(numberedName + "->name", componentName);
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	std::vector<std::string> names;
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	if (componentName != "")
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	  names.push_back(componentName);
	std::vector<int> comp;
	Parameters::get(numberedName + "->components", comp);
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	if (filename != "" && comp.size() > 0) {
	  // Create own filewriters for each component of the problem
	  std::vector<DOFVector<double>*> vectors;
	  for (size_t i = 0; i < comp.size(); i++)
	    vectors.push_back(solution->getDOFVector(comp[i]));
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	  fileWriters.push_back(new FileWriter(numberedName,
					      componentMeshes[comp[0]],
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					      vectors,
					      names
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					      ));

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	}
      }
    }
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    int writeSerialization = 0;
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    Parameters::get(name + "->output->write serialization", writeSerialization);
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    if (writeSerialization)
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      fileWriters.push_back(new Serializer<ProblemStatSeq>(this));