MueLu_PatternFactory_def.hpp

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#ifndef MUELU_PATTERNFACTORY_DEF_HPP
#define MUELU_PATTERNFACTORY_DEF_HPP
 
#include <Xpetra_Matrix.hpp>
#include <Xpetra_MatrixMatrix.hpp>
 
#include "MueLu_PatternFactory_decl.hpp"
 
#include "MueLu_MasterList.hpp"
#include "MueLu_Monitor.hpp"
//#include "MueLu_Utilities.hpp"
 
namespace MueLu {
 
  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  RCP<const ParameterList> PatternFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::GetValidParameterList() const {
    RCP<ParameterList> validParamList = rcp(new ParameterList());
 
#define SET_VALID_ENTRY(name) validParamList->setEntry(name, MasterList::getEntry(name))
    SET_VALID_ENTRY("emin: pattern order");
#undef  SET_VALID_ENTRY
 
    validParamList->set< RCP<const FactoryBase> >("A", Teuchos::null, "Generating factory for the matrix");
    validParamList->set< RCP<const FactoryBase> >("P", Teuchos::null, "Generating factory for the matrix providing nonzero graph");
 
    return validParamList;
  }
 
  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  void PatternFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::DeclareInput(Level& fineLevel, Level& coarseLevel) const {
    Input(coarseLevel, "P");
 
    const ParameterList& pL = GetParameterList();
    if (pL.get<int>("emin: pattern order") > 0)
      Input(fineLevel, "A");
  }
 
  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  void PatternFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::Build(Level& fineLevel, Level& coarseLevel) const {
    FactoryMonitor m(*this, "Ppattern", coarseLevel);
 
    RCP<Matrix> P = Get< RCP<Matrix> >(coarseLevel, "P");
 
    const ParameterList& pL = GetParameterList();
    int k = pL.get<int>("emin: pattern order");
 
    if (k > 0) {
      RCP<Matrix> A = Get< RCP<Matrix> >(fineLevel, "A");
      RCP<Matrix> AP;
 
      bool doFillComplete  = true;
      bool optimizeStorage = true;
 
      for (int i = 0; i < k; i++) {
        AP = Xpetra::MatrixMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>::Multiply(*A, false, *P, false, GetOStream(Statistics2), doFillComplete, optimizeStorage);
        P.swap(AP);
      }
    }
 
    Set(coarseLevel, "Ppattern", P->getCrsGraph());
  }
 
 
} // namespace MueLu
 
#endif // MUELU_PATTERNFACTORY_DEF_HPP