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EpetraExt_SubCopy_CrsMatrix.cpp
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41 
43 
44 #include <Epetra_CrsMatrix.h>
45 #include <Epetra_Map.h>
46 #include <Epetra_Import.h>
47 #include <Epetra_IntSerialDenseVector.h>
48 #include <Epetra_LongLongSerialDenseVector.h>
49 #include <Epetra_GIDTypeSerialDenseVector.h>
50 #include <vector>
51 
52 namespace EpetraExt {
53 
56 {
57  if( newObj_ ) delete newObj_;
58 }
59 
60 template<typename int_type>
62 CrsMatrix_SubCopy::
63 transform( OriginalTypeRef orig )
64 {
65  origObj_ = &orig;
66 
67  //Error, must be local indices
68  assert( orig.Filled() );
69 
70  //test maps, new map must be subset of old
71  const Epetra_Map & oRowMap = orig.RowMap();
72  const Epetra_Map & oColMap = orig.ColMap();
73 
74  int oNumRows = oRowMap.NumMyElements();
75  (void) oNumRows; // Silence "unused variable" compiler warning.
76  int oNumCols = oColMap.NumMyElements();
77  int nNumRows = newRowMap_.NumMyElements();
78  int nNumDomain = newDomainMap_.NumMyElements();
79 
80  bool matched = true;
81 
82  // Make sure all rows in newRowMap are already on this processor
83  for( int i = 0; i < nNumRows; ++i )
84  matched = matched && ( oRowMap.MyGID(newRowMap_.GID64(i)) );
85  if( !matched ) std::cerr << "EDT_CrsMatrix_SubCopy: Bad new_row_Map. GIDs of new row map must be GIDs of the original row map on the same processor.\n";
86 
87  // Make sure all GIDs in the new domain map are GIDs in the old domain map
88  if( !newRangeMap_.SameAs(newDomainMap_) ) {
89  Epetra_IntSerialDenseVector pidList(nNumDomain);
90  int_type* newDomainMap_MyGlob = 0;
91  newDomainMap_.MyGlobalElementsPtr(newDomainMap_MyGlob);
92  oColMap.RemoteIDList(newDomainMap_.NumMyElements(), newDomainMap_MyGlob, pidList.Values(), 0);
93  for( int i = 0; i < nNumDomain; ++i )
94  matched = matched && ( pidList[i]>=0 );
95  }
96 
97  if( !matched ) std::cout << "EDT_CrsMatrix_SubCopy: Bad newDomainMap. One or more GIDs in new domain map are not part of original domain map.\n";
98  assert( matched );
99 
100 
101  // Next build new column map
102  Epetra_IntSerialDenseVector pidList(oNumCols);
103  Epetra_IntSerialDenseVector lidList(oNumCols);
104  Epetra_IntSerialDenseVector sizeList(oNumCols);
105  int_type* oColMap_MyGlob = 0;
106  oColMap.MyGlobalElementsPtr(oColMap_MyGlob);
107  newDomainMap_.RemoteIDList(oColMap.NumMyElements(), oColMap_MyGlob, pidList.Values(), 0);
108  int numNewCols = 0;
109  typename Epetra_GIDTypeSerialDenseVector<int_type>::impl newColMapGidList(oNumCols);
110  int_type * origColGidList = 0;
111  oColMap.MyGlobalElementsPtr(origColGidList);
112  for( int i = 0; i < oNumCols; ++i )
113  if (pidList[i] >=0)
114  newColMapGidList[numNewCols++]= origColGidList[i];
115  newColMap_ = Epetra_Map(-1, numNewCols, newColMapGidList.Values(), 0, oColMap.Comm());
116 
117  importer_ = new Epetra_Import(newRowMap_, oRowMap);
118 
119  Epetra_CrsMatrix * newMatrix = new Epetra_CrsMatrix(Copy, newRowMap_, newColMap_, 0);
120 
121  newObj_ = newMatrix;
122 
123  newObj_->Import(*origObj_, *importer_, Add);
124 
125  newObj_->FillComplete();
126 
127  return *newObj_;
128 }
129 
130 //==============================================================================
131 
135 {
136  const Epetra_Map & oRowMap = orig.RowMap();
137  const Epetra_Map & oColMap = orig.ColMap();
138 
139 #ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
140  if(oRowMap.GlobalIndicesInt() && oColMap.GlobalIndicesInt()) {
141  return transform<int>(orig);
142  }
143  else
144 #endif
145 #ifndef EPETRA_NO_64BIT_GLOBAL_INDICES
146  if(oRowMap.GlobalIndicesLongLong() && oColMap.GlobalIndicesLongLong()) {
147  return transform<long long>(orig);
148  }
149  else
150 #endif
151  throw "CrsMatrix_SubCopy::operator(): GlobalIndices type unknown";
152 }
153 
154 //==============================================================================
156 {
157 
158  if (newObj_->Filled()) newObj_->PutScalar(0.0); // zero contents
159 
160  newObj_->Import(*origObj_, *importer_, Add);
161 
162  newObj_->FillComplete();
163 
164 
165  return (true);
166 }
167 
168 //==============================================================================
170 {
171  if (!newObj_->Filled()) return(false); // Must have fillCompleted
172 
173  origObj_->Export(*newObj_, *importer_, Add);
174 
175  origObj_->FillComplete();
176 
177  return (true);
178 }
179 
180 } // namespace EpetraExt
181 
bool GlobalIndicesLongLong() const
bool SameAs(const Epetra_BlockMap &Map) const
bool GlobalIndicesInt() const
int NumMyElements() const
bool rvs()
Reverse transfer of data from new object created in the operator() method call to the orig object inp...
const Epetra_Comm & Comm() const
bool fwd()
Forward transfer of data from orig object input in the operator() method call to the new object creat...
NewTypeRef operator()(OriginalTypeRef orig)
Transformation Operator.
int RemoteIDList(int NumIDs, const int *GIDList, int *PIDList, int *LIDList) const