Tpetra Matrix/Vector Services Version of the Day
Tpetra_RowMatrixTransposer_def.hpp
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00041 
00042 #ifndef TPETRA_ROWMATRIXTRANSPOSER_DEF_HPP
00043 #define TPETRA_ROWMATRIXTRANSPOSER_DEF_HPP
00044 
00045 #include "Tpetra_Map.hpp"
00046 #include "Teuchos_DefaultSerialComm.hpp"
00047 #ifdef DOXYGEN_USE_ONLY
00048   // #include "Tpetra_RowMatrixtransposer_decl.hpp"
00049 #endif
00050 
00051 namespace Tpetra {
00052 
00053 template<class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node, class SpMatOps>
00054 RowMatrixTransposer<Scalar, LocalOrdinal, GlobalOrdinal, Node, SpMatOps>::RowMatrixTransposer(const CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>& origMatrix)
00055   : origMatrix_(origMatrix), comm_(origMatrix.getComm()), indexBase_(origMatrix_.getIndexBase()) {}
00056 
00057 template<class Scalar, 
00058   class LocalOrdinal, 
00059   class GlobalOrdinal, 
00060   class Node, 
00061   class SpMatOps>
00062 RowMatrixTransposer<Scalar, LocalOrdinal, GlobalOrdinal, Node, SpMatOps>::~RowMatrixTransposer() {}
00063 
00064 template<class Scalar, 
00065   class LocalOrdinal,
00066   class GlobalOrdinal, 
00067   class Node, 
00068   class SpMatOps>
00069 RCP<CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node, SpMatOps> >
00070 RowMatrixTransposer<Scalar, LocalOrdinal, GlobalOrdinal, Node, SpMatOps>::createTranspose (
00071   const OptimizeOption optimizeTranspose,
00072   Teuchos::RCP<const Map<LocalOrdinal, GlobalOrdinal, Node> > transposeRowMap)
00073 {
00074   optimizeTranspose_ = optimizeTranspose;
00075   transposeMatrix_ = rcp(new CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node, SpMatOps>(
00076     transposeRowMap == null? origMatrix_.getDomainMap() : transposeRowMap, 0));
00077   ArrayView<const LocalOrdinal> localIndicies;
00078   ArrayView<const Scalar> localValues;
00079   ArrayView<const GlobalOrdinal> myGlobalRows = origMatrix_.getRowMap()->getNodeElementList();
00080   size_t numEntriesInRow;
00081   Array<GlobalOrdinal> rowNum(1);
00082   RCP<const Map<LocalOrdinal,GlobalOrdinal,Node> > origColMap = origMatrix_.getColMap();
00083   for(
00084     size_t i = Teuchos::OrdinalTraits<size_t>::zero();
00085     i < origMatrix_.getNodeNumRows();
00086     ++i
00087   )
00088   {
00089     rowNum[0] = origMatrix_.getRowMap()->getGlobalElement(i);
00090     numEntriesInRow = origMatrix_.getNumEntriesInLocalRow(i);
00091     origMatrix_.getLocalRowView(i, localIndicies, localValues);
00092     for(size_t j=0; j<numEntriesInRow; ++j){
00093       transposeMatrix_->insertGlobalValues(origColMap->getGlobalElement(localIndicies[j]), rowNum(0,1), localValues(j,1));
00094     }
00095   }
00096 
00097   RCP<ParameterList> params = parameterList();
00098   if (optimizeTranspose_ == DoOptimizeStorage) params->set("Optimize Storage",true);
00099   else                                         params->set("Optimize Storage",false);
00100   transposeMatrix_->fillComplete(origMatrix_.getRangeMap(), origMatrix_.getDomainMap(), params);
00101 
00102   return transposeMatrix_;
00103 }
00104 
00105 //
00106 // Explicit instantiation macro
00107 //
00108 // Must be expanded from within the Tpetra namespace!
00109 //
00110 
00111 #define TPETRA_ROWMATRIXTRANSPOSE_INSTANT(SCALAR,LO,GO,NODE) \
00112   \
00113   template class RowMatrixTransposer< SCALAR, LO , GO , NODE >;
00114 
00115 
00116 }
00117 
00118 #endif
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