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EpetraExt_Overlap_CrsGraph.cpp
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4// EpetraExt: Epetra Extended - Linear Algebra Services Package
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41
43
44#include <Epetra_Import.h>
45#include <Epetra_CrsGraph.h>
46#include <Epetra_Map.h>
47
48namespace EpetraExt {
49
52{
53 if( newObj_ ) delete newObj_;
54
55 if( OverlapMap_ ) delete OverlapMap_;
56}
57
60operator()( OriginalTypeRef orig )
61{
62 origObj_ = &orig;
63
64 //check that this is a distributed graph and overlap level is not zero
65 if( orig.DomainMap().DistributedGlobal() && levelOverlap_ )
66 {
67 Epetra_CrsGraph * OverlapGraph = new Epetra_CrsGraph( orig );
68 OverlapMap_ = new Epetra_BlockMap( orig.RowMap() );
69
70 Epetra_BlockMap * DomainMap = &(const_cast<Epetra_BlockMap&>(orig.DomainMap()));
71 Epetra_BlockMap * RangeMap = &(const_cast<Epetra_BlockMap&>(orig.RangeMap()));
72
73 for( int level = 0; level < levelOverlap_; ++level )
74 {
75 Epetra_BlockMap * OldRowMap = OverlapMap_;
76 Epetra_CrsGraph * OldGraph = OverlapGraph;
77
78 Epetra_Import & OverlapImporter = *(const_cast<Epetra_Import *>( OldGraph->Importer() ));
79 OverlapMap_ = new Epetra_BlockMap( OverlapImporter.TargetMap() );
80
81 //filter to local square block on last level if required
82 if( squareLocalBlock_ && level==(levelOverlap_-1) )
83 OverlapGraph = new Epetra_CrsGraph( Copy, *OverlapMap_, *OverlapMap_, 0 );
84 else
85 OverlapGraph = new Epetra_CrsGraph( Copy, *OverlapMap_, 0 );
86
87 OverlapGraph->Import( *OldGraph, OverlapImporter, Insert );
88 OverlapGraph->FillComplete( *DomainMap, *RangeMap );
89
90 delete OldGraph;
91 delete OldRowMap;
92 }
93
94 newObj_ = OverlapGraph;
95 }
96 else //just create a copy since this is not a InPlaceTransform
97 newObj_ = new Epetra_CrsGraph( orig );
98
99 return *newObj_;
100}
101
102} // namespace EpetraExt
Insert
Copy
NewTypeRef operator()(OriginalTypeRef orig)
Constructs "overlapped" Epetra_CrsGraph from original.
EpetraExt::BlockCrsMatrix: A class for constructing a distributed block matrix.