pfc.cc

#include "AMDiS.h"
#include "Helpers.h"
#include "PhaseFieldCrystal.h"

#if defined(USE_SEQ_PETSC)
#include "preconditioner/PetscPreconPfc.h"
#elif defined(USE_PARALLEL_PETSC)
#include "preconditioner/PetscSolverPfc.h"
#elif defined(USE_MTL)
#include "preconditioner/MTLPreconPfc.h"
#endif

#include "Expressions.h"
#include "ProblemStat.h"

using namespace AMDiS;

class PfcPC : public base_problems::detail::PhaseFieldCrystal<ProblemStat>
{
public:
  typedef base_problems::detail::PhaseFieldCrystal<ProblemStat> super;

public:
  PfcPC(std::string name) : super(name) { }

  /// initialize the preconditioners, i.e. set parameters
  void finalizeData() override
  {
    super::finalizeData();

#if defined(USE_SEQ_PETSC)
    // sequential PFC preconditioner
    PetscPreconPfc* precon = dynamic_cast<PetscPreconPfc*>(prob->getSolver()->getRightPrecon());
    if (precon) {
      precon->setData(getTau(), M0);
    }
#elif defined(USE_PARALLEL_PETSC)
    // parallel PFC preconditioner
    Parallel::PetscSolverPfc* solver = dynamic_cast<Parallel::PetscSolverPfc*>(prob->getSolver());
    if (solver) {
      solver->setData(getTau(), M0);
    }
#elif defined(USE_MTL)
    // mtl4 preconditioner
    MTLPreconPfc* precon = dynamic_cast<MTLPreconPfc*>(prob->getSolver()->getRightPrecon());
    if (precon) {
      precon->setData(getTau(), M0);
    }
#endif
  }

  /// generate initial solution for evolution equation
  void solveInitialProblem(AdaptInfo *adaptInfo) override
  {
    Flag initFlag = initDataFromFile(adaptInfo);
    if (initFlag.isSet(DATA_ADOPTED))
      return;

    double amplitude = 0.1;
    Parameters::get(name + "->density amplitude",amplitude);

    DOFVector<double>* rho = prob->getSolution()->getDOFVector(1);
    *rho << eval(new Random(density, amplitude));
  }
};


int main(int argc, char** argv)
{ FUNCNAME("main");

  AMDiS::init(argc, argv);
  Timer t;

  // add preconditioner / solver to the parameter list. Must be added before problem is initialized.
#if defined(USE_SEQ_PETSC)
  CreatorMap<PetscPreconditionerNested>::addCreator("pfc", new PetscPreconPfc::Creator);
#elif defined(USE_PARALLEL_PETSC)
  CreatorMap<LinearSolverInterface>::addCreator("p_petsc_pfc", new Parallel::PetscSolverPfc::Creator);
#elif defined(USE_MTL)
  CreatorMap<typename MTLPreconPfc::precon_base>::addCreator("pfc", new MTLPreconPfc::Creator);
#endif

  // create and initialize the PFC BaseProblem
  PfcPC pfcProb("pfc");
  pfcProb.initialize(INIT_ALL);

  // Adapt-Infos
  AdaptInfo adaptInfo("adapt", pfcProb.getNumComponents());
  AdaptInstationary adaptInstat("adapt", pfcProb, adaptInfo, pfcProb, adaptInfo);

  // Scale Mesh
  bool scaleMesh = false;
  Initfile::get("mesh->scale mesh",scaleMesh);
  if (scaleMesh) {
    WorldVector<double> scale; scale.set(1.0);
    Initfile::get("mesh->dimension",scale);
    Helpers::scaleMesh(pfcProb.getMesh(), scale);
  }

  pfcProb.initTimeInterface(); // fill operators and BC
  int error_code = adaptInstat.adapt();

  MSG("elapsed time= %f sec\n", t.elapsed());
  AMDiS::finalize();
  return error_code;
}