MueLu_BlockedCoordinatesTransferFactory_def.hpp

Go to the documentation of this file.

// @HEADER
//
// ***********************************************************************
//
//        MueLu: A package for multigrid based preconditioning
//                  Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact
//                    Jonathan Hu       (jhu@sandia.gov)
//                    Andrey Prokopenko (aprokop@sandia.gov)
//                    Ray Tuminaro      (rstumin@sandia.gov)
//
// ***********************************************************************
//
// @HEADER
#ifndef MUELU_BLOCKEDCOORDINATESTRANSFER_FACTORY_DEF_HPP
#define MUELU_BLOCKEDCOORDINATESTRANSFER_FACTORY_DEF_HPP
 
#include "Xpetra_ImportFactory.hpp"
#include "Xpetra_MultiVectorFactory.hpp"
#include "Xpetra_MapFactory.hpp"
#include "Xpetra_IO.hpp"
 
#include "MueLu_CoarseMapFactory.hpp"
#include "MueLu_Aggregates.hpp"
#include "MueLu_BlockedCoordinatesTransferFactory_decl.hpp"
 
#include "MueLu_Level.hpp"
#include "MueLu_Monitor.hpp"
 
namespace MueLu {
 
  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  RCP<const ParameterList> BlockedCoordinatesTransferFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::GetValidParameterList() const {
    RCP<ParameterList> validParamList = rcp(new ParameterList());
 
    validParamList->set<RCP<const FactoryBase> >("Coordinates",                  Teuchos::null, "Factory for coordinates generation");
    validParamList->set<RCP<const FactoryBase> >("CoarseMap",                    Teuchos::null, "Generating factory of the coarse map");
    return validParamList;
  }
 
  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  void BlockedCoordinatesTransferFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::DeclareInput(Level& fineLevel, Level& coarseLevel) const {
    Input(coarseLevel, "CoarseMap");
 
    // Make sure the Level knows I need these sub-Factories
    const size_t numSubFactories = NumFactories();
    for(size_t i=0; i<numSubFactories; i++) {
      const RCP<const FactoryBase>& myFactory = subFactories_[i];
      coarseLevel.DeclareInput("Coordinates", myFactory.getRawPtr(), this);
    }
 
    // call DeclareInput of all user-given transfer factories
    for (std::vector<RCP<const FactoryBase> >::const_iterator it = subFactories_.begin(); it != subFactories_.end(); ++it)
      (*it)->CallDeclareInput(coarseLevel);
  }
 
  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  void BlockedCoordinatesTransferFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::Build(Level & fineLevel, Level &coarseLevel) const {
    FactoryMonitor m(*this, "Build", coarseLevel);
 
    typedef Xpetra::MultiVector<double,LO,GO,NO> dMV;
    typedef Xpetra::BlockedMultiVector<double,LO,GO,NO> dBV;
    typedef Xpetra::BlockedMap<LO,GO,NO> BlockedMap;
 
    GetOStream(Runtime0) << "Transferring (blocked) coordinates" << std::endl;
 
    const size_t numSubFactories = NumFactories();
    //std::vector<RCP<const Map> > subBlockMaps(numSubFactories);
    std::vector<RCP<dMV> > subBlockCoords(numSubFactories);
 
    if (coarseLevel.IsAvailable("Coordinates", this)) {
      GetOStream(Runtime0) << "Reusing coordinates" << std::endl;
      return;
    }
 
    // Get components
    for(size_t i=0; i<numSubFactories; i++) {
      GetOStream(Runtime1) << "Generating Coordinates for block " << i <<"/"<<numSubFactories <<std::endl;
      const RCP<const FactoryBase>& myFactory = subFactories_[i];
      myFactory->CallBuild(coarseLevel);
      subBlockCoords[i] = coarseLevel.Get<RCP<dMV> >("Coordinates", myFactory.get());
      //      subBlockMaps[i]   = subBlockCoords[i]->getMap();      
    }
    
    // Blocked Map
    RCP<const BlockedMap> coarseMap = Get< RCP<const BlockedMap> >(coarseLevel, "CoarseMap");
 
    // Build blocked coordinates vector
    RCP<dBV> bcoarseCoords = rcp(new dBV(coarseMap,subBlockCoords));
 
    // Turn the blocked coordinates vector into an unblocked one
    RCP<dMV> coarseCoords = bcoarseCoords->Merge();   
    Set<RCP<dMV> >(coarseLevel, "Coordinates", coarseCoords);
  }
 
  template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
  void BlockedCoordinatesTransferFactory<Scalar, LocalOrdinal, GlobalOrdinal, Node>::AddFactory(const RCP<const FactoryBase>& factory) {
    subFactories_.push_back(factory);
  }
 
 
 
} // namespace MueLu
 
#endif // MUELU_BLOCKEDCOORDINATESTRANSFER_FACTORY_DEF_HPP