C++ RefCountPtr::FillComplete方法代码示例

//==========================================================================
int Ifpack_CrsRiluk::InitValues(const Epetra_CrsMatrix & A) {

  UserMatrixIsCrs_ = true;

  if (!Allocated()) AllocateCrs();

  Teuchos::RefCountPtr<Epetra_CrsMatrix> OverlapA = Teuchos::rcp( (Epetra_CrsMatrix *) &A, false );

  if (IsOverlapped_) {
  
    OverlapA = Teuchos::rcp( new Epetra_CrsMatrix(Copy, *Graph_.OverlapGraph()) );
    EPETRA_CHK_ERR(OverlapA->Import(A, *Graph_.OverlapImporter(), Insert));
    EPETRA_CHK_ERR(OverlapA->FillComplete());
  }
  
  // Get Maximun Row length
  int MaxNumEntries = OverlapA->MaxNumEntries();

  // Set L range map and U domain map
  U_DomainMap_ = Teuchos::rcp( &(A.DomainMap()), false );
  L_RangeMap_ = Teuchos::rcp( &(A.RangeMap()), false );
  // Do the rest using generic Epetra_RowMatrix interface

  EPETRA_CHK_ERR(InitAllValues(*OverlapA, MaxNumEntries));

  return(0);
}

//==============================================================================
int main(int argc, char *argv[])
{

#ifdef HAVE_MPI
  MPI_Init(&argc,&argv);
  Epetra_MpiComm Comm(MPI_COMM_WORLD);
#else
  Epetra_SerialComm Comm;
#endif

  // only one process
  if (Comm.NumProc() != 1) {
#ifdef HAVE_MPI
    MPI_Finalize();
#endif
    if (Comm.MyPID() == 0)
      cout << "Please run this test with one process only" << endl;
    // return success not to break the tests
    exit(EXIT_SUCCESS);
  }

  // ======================================================== //
  // now create the famous "upper arrow" matrix, which        //
  // should be reordered as a "lower arrow". Sparsity pattern //
  // will be printed on screen.                               //
  // ======================================================== //
  
  int NumPoints = 16;
  
#if !defined(EPETRA_NO_32BIT_GLOBAL_INDICES) || !defined(EPETRA_NO_64BIT_GLOBAL_INDICES)
  Epetra_Map Map(-1,NumPoints,0,Comm);
#else
  Epetra_Map Map;
#endif

  std::vector<int> Indices(NumPoints);
  std::vector<double> Values(NumPoints);

  Teuchos::RefCountPtr<Epetra_CrsMatrix> A = Teuchos::rcp( new Epetra_CrsMatrix(Copy,Map,0) );
  for (int i = 0 ; i < NumPoints ; ++i) {
    
    int NumEntries;
    if (i == 0) {
      NumEntries = NumPoints;
      for (int j = 0 ; j < NumPoints ; ++j) {
	Indices[j] = j;
	Values[j] = 1.0;
      }
    }
    else {
      NumEntries = 2;
      Indices[0] = 0;
      Indices[1] = i;
      Values[0] = 1.0;
      Values[1] = 1.0;
    }

#if !defined(EPETRA_NO_32BIT_GLOBAL_INDICES) || !defined(EPETRA_NO_64BIT_GLOBAL_INDICES)
    A->InsertGlobalValues(i, NumEntries, &Values[0], &Indices[0]);
#endif
  }

  A->FillComplete();

  // print the sparsity to file, postscript format
  ////Ifpack_PrintSparsity(A,"OrigA.ps");

  // create the reordering...
  Teuchos::RefCountPtr<Ifpack_RCMReordering> Reorder = Teuchos::rcp( new Ifpack_RCMReordering() );
  // and compute is on A
  IFPACK_CHK_ERR(Reorder->Compute(*A));

  // cout information
  cout << *Reorder;

  // create a reordered matrix
  Ifpack_ReorderFilter ReordA(A, Reorder);

  // print the sparsity to file, postscript format
  ////Ifpack_PrintSparsity(ReordA,"ReordA.ps");

#ifdef HAVE_MPI
  MPI_Finalize(); 
#endif
  return(EXIT_SUCCESS);

}

//==============================================================================
// NOTE:
// - matrix is supposed to be localized, and passes through the
// singleton filter. This means that I do not have to look
// for Dirichlet nodes (singletons). Also, all rows and columns are 
// local.
int Ifpack_METISPartitioner::ComputePartitions()
{

  int ierr;
#ifdef HAVE_IFPACK_METIS
  int nbytes = 0;
  int edgecut;
#endif

  Teuchos::RefCountPtr<Epetra_CrsGraph> SymGraph ;
  Teuchos::RefCountPtr<Epetra_Map> SymMap;
  Teuchos::RefCountPtr<Ifpack_Graph_Epetra_CrsGraph> SymIFPACKGraph;
  Teuchos::RefCountPtr<Ifpack_Graph> IFPACKGraph = Teuchos::rcp( (Ifpack_Graph*)Graph_, false );

  int Length = 2 * MaxNumEntries();
  int NumIndices;
  std::vector<int> Indices;
  Indices.resize(Length);

  /* construct the CSR graph information of the LOCAL matrix
     using the get_row function */

  std::vector<idxtype> wgtflag;
  wgtflag.resize(4);

  std::vector<int> options;
  options.resize(4);
  
  int numflag;

  if (UseSymmetricGraph_) {

#if !defined(EPETRA_NO_32BIT_GLOBAL_INDICES) || !defined(EPETRA_NO_64BIT_GLOBAL_INDICES)
    // need to build a symmetric graph. 
    // I do this in two stages:
    // 1.- construct an Epetra_CrsMatrix, symmetric
    // 2.- convert the Epetra_CrsMatrix into METIS format
    SymMap = Teuchos::rcp( new Epetra_Map(NumMyRows(),0,Graph_->Comm()) );
    SymGraph = Teuchos::rcp( new Epetra_CrsGraph(Copy,*SymMap,0) );
#endif

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
      if(SymGraph->RowMap().GlobalIndicesInt()) {
        for (int i = 0; i < NumMyRows() ; ++i) {

          ierr = Graph_->ExtractMyRowCopy(i, Length, NumIndices, &Indices[0]);
          IFPACK_CHK_ERR(ierr);

          for (int j = 0 ; j < NumIndices ; ++j) {
            int jj = Indices[j];
            if (jj != i) {
              SymGraph->InsertGlobalIndices(i,1,&jj);
              SymGraph->InsertGlobalIndices(jj,1,&i);
            }
          }
        }
      }
      else
#endif
#ifndef EPETRA_NO_64BIT_GLOBAL_INDICES
      if(SymGraph->RowMap().GlobalIndicesLongLong()) {
        for (int i = 0; i < NumMyRows() ; ++i) {
          long long i_LL = i;

          ierr = Graph_->ExtractMyRowCopy(i, Length, NumIndices, &Indices[0]);
          IFPACK_CHK_ERR(ierr);

          for (int j = 0 ; j < NumIndices ; ++j) {
            long long jj = Indices[j];
            if (jj != i_LL) {
              SymGraph->InsertGlobalIndices(i_LL,1,&jj);
              SymGraph->InsertGlobalIndices(jj,1,&i_LL);
            }
          }
        }
      }
      else
#endif
        throw "Ifpack_METISPartitioner::ComputePartitions: GlobalIndices type unknown";

    IFPACK_CHK_ERR(SymGraph->FillComplete());
    SymIFPACKGraph = Teuchos::rcp( new Ifpack_Graph_Epetra_CrsGraph(SymGraph) );
    IFPACKGraph = SymIFPACKGraph;
  }

  // now work on IFPACKGraph, that can be the symmetric or
  // the non-symmetric one

  /* set parameters */
   
  wgtflag[0] = 0;    /* no weights */
  numflag    = 0;    /* C style */
  options[0] = 0;    /* default options */
   
//.........这里部分代码省略.........