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Panzer_ScatterDirichletResidual_BlockedEpetra_Hessian_impl.hpp
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42 
43 #ifndef __Panzer_ScatterDirichletResidual_BlockedEpetra_Hessian_impl_hpp__
44 #define __Panzer_ScatterDirichletResidual_BlockedEpetra_Hessian_impl_hpp__
45 
46 // only do this if required by the user
47 #ifdef Panzer_BUILD_HESSIAN_SUPPORT
48 
49 // the includes for this file come in as a result of the includes in the main
50 // blocked Epetra scatter dirichlet residual file
51 
52 
53 namespace panzer {
54 
55 // **************************************************************
56 // Hessian Specialization
57 // **************************************************************
58 template<typename TRAITS,typename LO,typename GO>
61  const std::vector<Teuchos::RCP<const UniqueGlobalIndexer<LO,int> > > & cIndexers,
62  const Teuchos::ParameterList& p,
63  bool /* useDiscreteAdjoint */)
64  : rowIndexers_(rIndexers)
65  , colIndexers_(cIndexers)
66  , globalDataKey_("Residual Scatter Container")
67 {
68  std::string scatterName = p.get<std::string>("Scatter Name");
69  scatterHolder_ =
70  Teuchos::rcp(new PHX::Tag<ScalarT>(scatterName,Teuchos::rcp(new PHX::MDALayout<Dummy>(0))));
71 
72  // get names to be evaluated
73  const std::vector<std::string>& names =
74  *(p.get< Teuchos::RCP< std::vector<std::string> > >("Dependent Names"));
75 
76  // grab map from evaluated names to field names
77  fieldMap_ = p.get< Teuchos::RCP< std::map<std::string,std::string> > >("Dependent Map");
78 
80  p.get< Teuchos::RCP<panzer::PureBasis> >("Basis")->functional;
81 
82  side_subcell_dim_ = p.get<int>("Side Subcell Dimension");
83  local_side_id_ = p.get<int>("Local Side ID");
84 
85  // build the vector of fields that this is dependent on
86  scatterFields_.resize(names.size());
87  for (std::size_t eq = 0; eq < names.size(); ++eq) {
88  scatterFields_[eq] = PHX::MDField<const ScalarT,Cell,NODE>(names[eq],dl);
89 
90  // tell the field manager that we depend on this field
91  this->addDependentField(scatterFields_[eq]);
92  }
93 
94  checkApplyBC_ = p.get<bool>("Check Apply BC");
95  if (checkApplyBC_) {
96  applyBC_.resize(names.size());
97  for (std::size_t eq = 0; eq < names.size(); ++eq) {
98  applyBC_[eq] = PHX::MDField<const bool,Cell,NODE>(std::string("APPLY_BC_")+fieldMap_->find(names[eq])->second,dl);
99  this->addDependentField(applyBC_[eq]);
100  }
101  }
102 
103  // this is what this evaluator provides
104  this->addEvaluatedField(*scatterHolder_);
105 
106  if (p.isType<std::string>("Global Data Key"))
107  globalDataKey_ = p.get<std::string>("Global Data Key");
108 
109  if(colIndexers_.size()==0)
110  colIndexers_ = rowIndexers_;
111 
112  this->setName(scatterName+" Scatter Dirichlet Residual : BlockedEpetra (Hessian)");
113 }
114 
115 template<typename TRAITS,typename LO,typename GO>
116 void
118 postRegistrationSetup(typename TRAITS::SetupData /* d */,
119  PHX::FieldManager<TRAITS>& /* fm */)
120 {
121  indexerIds_.resize(scatterFields_.size());
122  subFieldIds_.resize(scatterFields_.size());
123 
124  // load required field numbers for fast use
125  for(std::size_t fd=0;fd<scatterFields_.size();++fd) {
126  // get field ID from DOF manager
127  std::string fieldName = fieldMap_->find(scatterFields_[fd].fieldTag().name())->second;
128 
129  indexerIds_[fd] = getFieldBlock(fieldName,rowIndexers_);
130  subFieldIds_[fd] = rowIndexers_[indexerIds_[fd]]->getFieldNum(fieldName);
131  }
132 
133  // get the number of nodes (Should be renamed basis)
134  num_nodes = scatterFields_[0].extent(1);
135  num_eq = scatterFields_.size();
136 }
137 
138 template<typename TRAITS,typename LO,typename GO>
139 void
141 preEvaluate(typename TRAITS::PreEvalData d)
142 {
143  typedef BlockedEpetraLinearObjContainer BLOC;
144 
145  using Teuchos::rcp_dynamic_cast;
146 
147  // extract dirichlet counter from container
148  Teuchos::RCP<const BLOC> blockContainer
149  = rcp_dynamic_cast<const BLOC>(d.gedc->getDataObject("Dirichlet Counter"),true);
150 
151  dirichletCounter_ = rcp_dynamic_cast<Thyra::ProductVectorBase<double> >(blockContainer->get_f(),true);
152  TEUCHOS_ASSERT(!Teuchos::is_null(dirichletCounter_));
153 
154  // extract linear object container
155  blockContainer = rcp_dynamic_cast<const BLOC>(d.gedc->getDataObject(globalDataKey_),true);
156  TEUCHOS_ASSERT(!Teuchos::is_null(blockContainer));
157 
158  Jac_ = rcp_dynamic_cast<Thyra::BlockedLinearOpBase<double> >(blockContainer->get_A());
159 }
160 
161 template<typename TRAITS,typename LO,typename GO>
162 void
164 evaluateFields(typename TRAITS::EvalData workset)
165 {
166  using Teuchos::RCP;
167  using Teuchos::ArrayRCP;
168  using Teuchos::ptrFromRef;
169  using Teuchos::rcp_dynamic_cast;
170 
171  using Thyra::SpmdVectorBase;
172 
173  // for convenience pull out some objects from workset
174  std::string blockId = this->wda(workset).block_id;
175  const std::vector<std::size_t> & localCellIds = this->wda(workset).cell_local_ids;
176 
177  int numFieldBlocks = Teuchos::as<int>(colIndexers_.size());
178 
179  std::vector<int> blockOffsets;
180  computeBlockOffsets(blockId,colIndexers_,blockOffsets);
181 
182  std::unordered_map<std::pair<int,int>,Teuchos::RCP<Epetra_CrsMatrix>,panzer::pair_hash> jacEpetraBlocks;
183 
184  // NOTE: A reordering of these loops will likely improve performance
185  // The "getGIDFieldOffsets may be expensive. However the
186  // "getElementGIDs" can be cheaper. However the lookup for LIDs
187  // may be more expensive!
188 
189  for(std::size_t fieldIndex = 0; fieldIndex < scatterFields_.size(); fieldIndex++) {
190  int rowIndexer = indexerIds_[fieldIndex];
191  int subFieldNum = subFieldIds_[fieldIndex];
192 
193  // loop over each field to be scattered
194  Teuchos::ArrayRCP<double> local_dc;
195  rcp_dynamic_cast<SpmdVectorBase<double> >(dirichletCounter_->getNonconstVectorBlock(rowIndexer))
196  ->getNonconstLocalData(ptrFromRef(local_dc));
197 
198  auto subRowIndexer = rowIndexers_[rowIndexer];
199  auto subIndicePair = subRowIndexer->getGIDFieldOffsets_closure(blockId,subFieldNum, side_subcell_dim_, local_side_id_);
200  const std::vector<int> & subElmtOffset = subIndicePair.first;
201  const std::vector<int> & subBasisIdMap = subIndicePair.second;
202 
203  // scatter operation for each cell in workset
204  for(std::size_t worksetCellIndex=0;worksetCellIndex<localCellIds.size();++worksetCellIndex) {
205  std::size_t cellLocalId = localCellIds[worksetCellIndex];
206 
207  auto rLIDs = subRowIndexer->getElementLIDs(cellLocalId);
208 
209  // loop over basis functions
210  for(std::size_t basis=0;basis<subElmtOffset.size();basis++) {
211  int offset = subElmtOffset[basis];
212  int lid = rLIDs[offset];
213  if(lid<0) // not on this processor
214  continue;
215 
216  int basisId = subBasisIdMap[basis];
217 
218  if (checkApplyBC_)
219  if (!applyBC_[fieldIndex](worksetCellIndex,basisId))
220  continue;
221 
222  // zero out matrix row
223  for(int colIndexer=0;colIndexer<numFieldBlocks;colIndexer++) {
224  int start = blockOffsets[colIndexer];
225  int end = blockOffsets[colIndexer+1];
226 
227  if(end-start<=0)
228  continue;
229 
230  // check hash table for jacobian sub block
231  std::pair<int,int> blockIndex = std::make_pair(rowIndexer,colIndexer);
232  Teuchos::RCP<Epetra_CrsMatrix> subJac = jacEpetraBlocks[blockIndex];
233  // if you didn't find one before, add it to the hash table
234  if(subJac==Teuchos::null) {
235  Teuchos::RCP<Thyra::LinearOpBase<double> > tOp = Jac_->getNonconstBlock(blockIndex.first,blockIndex.second);
236 
237  // block operator is null, don't do anything (it is excluded)
238  if(Teuchos::is_null(tOp))
239  continue;
240 
241  Teuchos::RCP<Epetra_Operator> eOp = Thyra::get_Epetra_Operator(*tOp);
242  subJac = rcp_dynamic_cast<Epetra_CrsMatrix>(eOp,true);
243  jacEpetraBlocks[blockIndex] = subJac;
244  }
245 
246  int numEntries = 0;
247  int * rowIndices = 0;
248  double * rowValues = 0;
249 
250  subJac->ExtractMyRowView(lid,numEntries,rowValues,rowIndices);
251 
252  for(int i=0;i<numEntries;i++)
253  rowValues[i] = 0.0;
254  }
255 
256  const ScalarT scatterField = (scatterFields_[fieldIndex])(worksetCellIndex,basisId);
257 
258  local_dc[lid] = 1.0; // mark row as dirichlet
259 
260  // loop over the sensitivity indices: all DOFs on a cell
261  std::vector<double> jacRow(scatterField.size(),0.0);
262 
263  for(int sensIndex=0;sensIndex<scatterField.size();++sensIndex)
264  jacRow[sensIndex] = scatterField.fastAccessDx(sensIndex).fastAccessDx(0);
265 
266  for(int colIndexer=0;colIndexer<numFieldBlocks;colIndexer++) {
267  int start = blockOffsets[colIndexer];
268  int end = blockOffsets[colIndexer+1];
269 
270  if(end-start<=0)
271  continue;
272 
273  auto subColIndexer = colIndexers_[colIndexer];
274  auto cLIDs = subColIndexer->getElementLIDs(cellLocalId);
275 
276  TEUCHOS_ASSERT(end-start==Teuchos::as<int>(cLIDs.size()));
277 
278  // check hash table for jacobian sub block
279  std::pair<int,int> blockIndex = std::make_pair(rowIndexer,colIndexer);
280  Teuchos::RCP<Epetra_CrsMatrix> subJac = jacEpetraBlocks[blockIndex];
281 
282  // if you didn't find one before, add it to the hash table
283  if(subJac==Teuchos::null) {
284  Teuchos::RCP<Thyra::LinearOpBase<double> > tOp = Jac_->getNonconstBlock(blockIndex.first,blockIndex.second);
285 
286  // block operator is null, don't do anything (it is excluded)
287  if(Teuchos::is_null(tOp))
288  continue;
289 
290  Teuchos::RCP<Epetra_Operator> eOp = Thyra::get_Epetra_Operator(*tOp);
291  subJac = rcp_dynamic_cast<Epetra_CrsMatrix>(eOp,true);
292  jacEpetraBlocks[blockIndex] = subJac;
293  }
294 
295  // Sum Jacobian
296  int err = subJac->ReplaceMyValues(lid, end-start, &jacRow[start],&cLIDs[0]);
297  if(err!=0) {
298  std::stringstream ss;
299  ss << "Failed inserting row: " << " (" << lid << "): ";
300  for(int i=0;i<end-start;i++)
301  ss << cLIDs[i] << " ";
302  ss << std::endl;
303  ss << "Into block " << rowIndexer << ", " << colIndexer << std::endl;
304 
305  ss << "scatter field = ";
306  scatterFields_[fieldIndex].print(ss);
307  ss << std::endl;
308 
309  TEUCHOS_TEST_FOR_EXCEPTION(err!=0,std::runtime_error,ss.str());
310  }
311 
312  }
313  }
314  }
315  }
316 }
317 
318 }
319 
320 // **************************************************************
321 #endif
322 
323 #endif
int getFieldBlock(const std::string &fieldName, const std::vector< Teuchos::RCP< UniqueGlobalIndexer< LocalOrdinalT, GlobalOrdinalT > > > &ugis)
T & get(const std::string &name, T def_value)
bool is_null(const std::shared_ptr< T > &p)
void computeBlockOffsets(const std::string &blockId, const std::vector< Teuchos::RCP< UniqueGlobalIndexer< LocalOrdinalT, GlobalOrdinalT > > > &ugis, std::vector< int > &blockOffsets)
#define TEUCHOS_TEST_FOR_EXCEPTION(throw_exception_test, Exception, msg)
void postRegistrationSetup(typename TRAITS::SetupData d, PHX::FieldManager< TRAITS > &vm)
int ExtractMyRowView(int MyRow, int &NumEntries, double *&Values, int *&Indices) const
Pushes residual values into the residual vector for a Newton-based solve.
TEUCHOS_DEPRECATED RCP< T > rcp(T *p, Dealloc_T dealloc, bool owns_mem)
bool isType(const std::string &name) const
#define TEUCHOS_ASSERT(assertion_test)
int ReplaceMyValues(int MyRow, int NumEntries, const double *Values, const int *Indices)
TransListIter end