Panzer_ScatterResidual_TpetraSG_impl.hpp

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#ifndef PANZER_SCATTER_RESIDUAL_TPETRA_SG_IMPL_HPP
#define PANZER_SCATTER_RESIDUAL_TPETRA_SG_IMPL_HPP

#include "Panzer_config.hpp"
#ifdef HAVE_STOKHOS

#include "Panzer_SGTpetraLinearObjContainer.hpp"
#include "Phalanx_DataLayout_MDALayout.hpp"

// **********************************************************************
// Specialization: SGResidual
// **********************************************************************

template<typename TRAITS,typename LO,typename GO,typename NodeT>
panzer::ScatterResidual_Tpetra<panzer::Traits::SGResidual, TRAITS,LO,GO,NodeT>::
ScatterResidual_Tpetra(const Teuchos::RCP<const panzer::UniqueGlobalIndexer<LO,GO> > & indexer,
                       const Teuchos::ParameterList& p)
  : globalIndexer_(indexer) 
{ 
  std::string scatterName = p.get<std::string>("Scatter Name");
  scatterHolder_ = 
    Teuchos::rcp(new PHX::Tag<ScalarT>(scatterName,Teuchos::rcp(new PHX::MDALayout<Dummy>(0))));

  // get names to be evaluated
  const std::vector<std::string>& names = 
    *(p.get< Teuchos::RCP< std::vector<std::string> > >("Dependent Names"));

  // grab map from evaluated names to field names
  fieldMap_ = p.get< Teuchos::RCP< std::map<std::string,std::string> > >("Dependent Map");

  Teuchos::RCP<PHX::DataLayout> dl = 
    p.get< Teuchos::RCP<const panzer::PureBasis> >("Basis")->functional;
  
  // build the vector of fields that this is dependent on
  scatterFields_.resize(names.size());
  for (std::size_t eq = 0; eq < names.size(); ++eq) {
    scatterFields_[eq] = PHX::MDField<ScalarT,Cell,NODE>(names[eq],dl);

    // tell the field manager that we depend on this field
    this->addDependentField(scatterFields_[eq]);
  }

  // this is what this evaluator provides
  this->addEvaluatedField(*scatterHolder_);

  this->setName(scatterName+" Scatter Residual (SGResidual)");
}

// **********************************************************************
template<typename TRAITS,typename LO,typename GO,typename NodeT> 
void panzer::ScatterResidual_Tpetra<panzer::Traits::SGResidual, TRAITS,LO,GO,NodeT>::
postRegistrationSetup(typename TRAITS::SetupData d, 
          PHX::FieldManager<TRAITS>& fm)
{
  // globalIndexer_ = d.globalIndexer_;

  fieldIds_.resize(scatterFields_.size());
  // load required field numbers for fast use
  for(std::size_t fd=0;fd<scatterFields_.size();++fd) {
    // get field ID from DOF manager
    std::string fieldName = fieldMap_->find(scatterFields_[fd].fieldTag().name())->second;
    fieldIds_[fd] = globalIndexer_->getFieldNum(fieldName);

    // fill field data object
    this->utils.setFieldData(scatterFields_[fd],fm);
  }
}

// **********************************************************************
template<typename TRAITS,typename LO,typename GO,typename NodeT>
void panzer::ScatterResidual_Tpetra<panzer::Traits::SGResidual, TRAITS,LO,GO,NodeT>::
evaluateFields(typename TRAITS::EvalData workset)
{ 
   TEUCHOS_ASSERT(false); // this doesn't even work
/*
   typedef TpetraLinearObjContainer<double,LO,GO,NodeT> LOC;
   typedef SGTpetraLinearObjContainer<double,LO,GO,NodeT> SGLOC;

   std::vector<GO> GIDs;
   std::vector<LO> LIDs;
 
   // for convenience pull out some objects from workset
   std::string blockId = this->wda(workset).block_id;
   const std::vector<std::size_t> & localCellIds = this->wda(workset).cell_local_ids;

   Teuchos::RCP<SGLOC> sgTpetraContainer 
         = Teuchos::rcp_dynamic_cast<SGLOC>(workset.ghostedLinContainer);
   Teuchos::RCP<typename LOC::VectorType> r_template = (*sgTpetraContainer->begin())->get_f();
   Teuchos::RCP<const typename LOC::MapType> map = r_template->getMap();

   // NOTE: A reordering of these loops will likely improve performance
   //       The "getGIDFieldOffsets may be expensive.  However the
   //       "getElementGIDs" can be cheaper. However the lookup for LIDs
   //       may be more expensive!

   // scatter operation for each cell in workset
   for(std::size_t worksetCellIndex=0;worksetCellIndex<localCellIds.size();++worksetCellIndex) {
      std::size_t cellLocalId = localCellIds[worksetCellIndex];

      globalIndexer_->getElementGIDs(cellLocalId,GIDs,blockId); 

      // caculate the local IDs for this element
      LIDs.resize(GIDs.size());
      for(std::size_t i=0;i<GIDs.size();i++)
         LIDs[i] = map->getLocalElement(GIDs[i]);

      // loop over each field to be scattered
      for (std::size_t fieldIndex = 0; fieldIndex < scatterFields_.size(); fieldIndex++) {
         int fieldNum = fieldIds_[fieldIndex];
         const std::vector<int> & elmtOffset = globalIndexer_->getGIDFieldOffsets(blockId,fieldNum);
   
         // loop over basis functions
         for(std::size_t basis=0;basis<elmtOffset.size();basis++) {
            int offset = elmtOffset[basis];
            LO lid = LIDs[offset];

            const ScalarT field = (scatterFields_[fieldIndex])(worksetCellIndex,basis);

            // loop over stochastic basis scatter field values to residual vectors
            int stochIndex = 0;
            typename SGLOC::iterator itr; 
            for(itr=sgTpetraContainer->begin();itr!=sgTpetraContainer->end();++itr,++stochIndex) {
               Teuchos::ArrayRCP<double> f_array = (*itr)->get_f()->get1dViewNonConst();
               f_array[lid] += field.coeff(stochIndex);
            }
         }
      }
   }
*/
}

// **********************************************************************
// Specialization: SGJacobian
// **********************************************************************

template<typename TRAITS,typename LO,typename GO,typename NodeT>
panzer::ScatterResidual_Tpetra<panzer::Traits::SGJacobian, TRAITS,LO,GO,NodeT>::
ScatterResidual_Tpetra(const Teuchos::RCP<const UniqueGlobalIndexer<LO,GO> > & indexer,
                       const Teuchos::ParameterList& p)
   : globalIndexer_(indexer)
{ 
  std::string scatterName = p.get<std::string>("Scatter Name");
  scatterHolder_ = 
    Teuchos::rcp(new PHX::Tag<ScalarT>(scatterName,Teuchos::rcp(new PHX::MDALayout<Dummy>(0))));

  // get names to be evaluated
  const std::vector<std::string>& names = 
    *(p.get< Teuchos::RCP< std::vector<std::string> > >("Dependent Names"));

  // grab map from evaluated names to field names
  fieldMap_ = p.get< Teuchos::RCP< std::map<std::string,std::string> > >("Dependent Map");

  Teuchos::RCP<PHX::DataLayout> dl = 
    p.get< Teuchos::RCP<const panzer::PureBasis> >("Basis")->functional;
  
  // build the vector of fields that this is dependent on
  scatterFields_.resize(names.size());
  for (std::size_t eq = 0; eq < names.size(); ++eq) {
    scatterFields_[eq] = PHX::MDField<ScalarT,Cell,NODE>(names[eq],dl);

    // tell the field manager that we depend on this field
    this->addDependentField(scatterFields_[eq]);
  }

  // this is what this evaluator provides
  this->addEvaluatedField(*scatterHolder_);

  this->setName(scatterName+" Scatter Residual (SGJacobian)");
}

// **********************************************************************
template<typename TRAITS,typename LO,typename GO,typename NodeT> 
void panzer::ScatterResidual_Tpetra<panzer::Traits::SGJacobian, TRAITS,LO,GO,NodeT>::
postRegistrationSetup(typename TRAITS::SetupData d,
          PHX::FieldManager<TRAITS>& fm)
{
  // globalIndexer_ = d.globalIndexer_;

  fieldIds_.resize(scatterFields_.size());
  // load required field numbers for fast use
  for(std::size_t fd=0;fd<scatterFields_.size();++fd) {
    // get field ID from DOF manager
    std::string fieldName = fieldMap_->find(scatterFields_[fd].fieldTag().name())->second;
    fieldIds_[fd] = globalIndexer_->getFieldNum(fieldName);

    // fill field data object
    this->utils.setFieldData(scatterFields_[fd],fm);
  }
}

// **********************************************************************
template<typename TRAITS,typename LO,typename GO,typename NodeT>
void panzer::ScatterResidual_Tpetra<panzer::Traits::SGJacobian, TRAITS,LO,GO,NodeT>::
evaluateFields(typename TRAITS::EvalData workset)
{  
   TEUCHOS_ASSERT(false);

/*
   typedef TpetraLinearObjContainer<double,LO,GO,NodeT> LOC;
   typedef SGTpetraLinearObjContainer<double,LO,GO,NodeT> SGLOC;

   std::vector<GO> GIDs;
   std::vector<LO> rLIDs, cLIDs;
   std::vector<double> jacRow;
 
   // for convenience pull out some objects from workset
   std::string blockId = this->wda(workset).block_id;
   const std::vector<std::size_t> & localCellIds = this->wda(workset).cell_local_ids;

   Teuchos::RCP<SGLOC> sgTpetraContainer 
         = Teuchos::rcp_dynamic_cast<SGLOC>(workset.ghostedLinContainer);
   Teuchos::RCP<typename LOC::CrsMatrixType> Jac_template = (*sgTpetraContainer->begin())->get_A();
   Teuchos::RCP<const typename LOC::MapType> rMap = Jac_template->getRowMap();
   Teuchos::RCP<const typename LOC::MapType> cMap = Jac_template->getColMap();

   // NOTE: A reordering of these loops will likely improve performance
   //       The "getGIDFieldOffsets" may be expensive.  However the
   //       "getElementGIDs" can be cheaper. However the lookup for LIDs
   //       may be more expensive!

   // scatter operation for each cell in workset
   for(std::size_t worksetCellIndex=0;worksetCellIndex<localCellIds.size();++worksetCellIndex) {
      std::size_t cellLocalId = localCellIds[worksetCellIndex];

      globalIndexer_->getElementGIDs(cellLocalId,GIDs,blockId); 

      // caculate the local IDs for this element
      rLIDs.resize(GIDs.size());
      cLIDs.resize(GIDs.size());
      for(std::size_t i=0;i<GIDs.size();i++) {
         rLIDs[i] = rMap->getLocalElement(GIDs[i]);
         cLIDs[i] = cMap->getLocalElement(GIDs[i]);
      }

      // loop over each field to be scattered
      for(std::size_t fieldIndex = 0; fieldIndex < scatterFields_.size(); fieldIndex++) {
         int fieldNum = fieldIds_[fieldIndex];
         const std::vector<int> & elmtOffset = globalIndexer_->getGIDFieldOffsets(blockId,fieldNum);
        
         // loop over the basis functions (currently they are nodes)
         for(std::size_t rowBasisNum = 0; rowBasisNum < elmtOffset.size(); rowBasisNum++) {
            const ScalarT scatterField = (scatterFields_[fieldIndex])(worksetCellIndex,rowBasisNum);
            int rowOffset = elmtOffset[rowBasisNum];
            LO row = rLIDs[rowOffset];

            // loop over stochastic basis scatter field values to residual vectors
            int stochIndex = 0;
            typename SGLOC::iterator itr; 
            for(itr=sgTpetraContainer->begin();itr!=sgTpetraContainer->end();++itr,++stochIndex) {
               Teuchos::RCP<typename LOC::VectorType> r = (*itr)->get_f();
               Teuchos::RCP<typename LOC::CrsMatrixType> Jac = (*itr)->get_A();

               // Sum residual
               if(r!=Teuchos::null) {
                r->sumIntoLocalValue(row,scatterField.val().coeff(stochIndex));
               }
       
               // loop over the sensitivity indices: all DOFs on a cell
               jacRow.resize(scatterField.size());
               
               for(int sensIndex=0;sensIndex<scatterField.size();++sensIndex)
                  jacRow[sensIndex] = scatterField.fastAccessDx(sensIndex).coeff(stochIndex);
       
               // Sum SGJacobian
               Jac->sumIntoLocalValues(row, cLIDs, jacRow);
            }
         } // end rowBasisNum
      } // end fieldIndex
   }
*/
}

// **********************************************************************

#endif

#endif