C++ Epetra_RowMatrix::NumGlobalRows64方法代码示例

int writeRowMatrix(FILE * handle, const Epetra_RowMatrix & A) {

  long long numRows_LL = A.NumGlobalRows64();
  if(numRows_LL > std::numeric_limits<int>::max())
    throw "EpetraExt::writeRowMatrix: numRows_LL > std::numeric_limits<int>::max()";

  int numRows = static_cast<int>(numRows_LL);
  Epetra_Map rowMap = A.RowMatrixRowMap();
  Epetra_Map colMap = A.RowMatrixColMap();
  const Epetra_Comm & comm = rowMap.Comm();
  long long ioffset = 1 - rowMap.IndexBase64(); // Matlab indices start at 1
  long long joffset = 1 - colMap.IndexBase64(); // Matlab indices start at 1
  if (comm.MyPID()!=0) {
    if (A.NumMyRows()!=0) {EPETRA_CHK_ERR(-1);}
    if (A.NumMyCols()!=0) {EPETRA_CHK_ERR(-1);}
  }
  else {
    if (numRows!=A.NumMyRows()) {EPETRA_CHK_ERR(-1);}
    Epetra_SerialDenseVector values(A.MaxNumEntries());
    Epetra_IntSerialDenseVector indices(A.MaxNumEntries());
    for (int i=0; i<numRows; i++) {
      long long I = rowMap.GID64(i) + ioffset;
      int numEntries;
      if (A.ExtractMyRowCopy(i, values.Length(), numEntries, 
			     values.Values(), indices.Values())!=0) {EPETRA_CHK_ERR(-1);}
      for (int j=0; j<numEntries; j++) {
	long long J = colMap.GID64(indices[j]) + joffset;
	double val = values[j];
	fprintf(handle, "%lld %lld %22.16e\n", I, J, val);
      }
    }
  }
  return(0);
}

// ============================================================================
void EpetraExt::XMLWriter::
Write(const std::string& Label, const Epetra_RowMatrix& Matrix)
{
  TEUCHOS_TEST_FOR_EXCEPTION(IsOpen_ == false, std::logic_error,
                     "No file has been opened");

  long long Rows = Matrix.NumGlobalRows64();
  long long Cols = Matrix.NumGlobalRows64();
  long long Nonzeros = Matrix.NumGlobalNonzeros64();

  if (Comm_.MyPID() == 0)
  {
    std::ofstream of(FileName_.c_str(), std::ios::app);
    of << "<PointMatrix Label=\"" << Label << '"'
      << " Rows=\"" << Rows << '"'
      << " Columns=\"" << Cols<< '"'
      << " Nonzeros=\"" << Nonzeros << '"'
      << " Type=\"double\" StartingIndex=\"0\">" << std::endl;
  }

  int Length = Matrix.MaxNumEntries();
  std::vector<int> Indices(Length);
  std::vector<double> Values(Length);

  for (int iproc = 0; iproc < Comm_.NumProc(); iproc++)
  {
    if (iproc == Comm_.MyPID())
    {
      std::ofstream of(FileName_.c_str(), std::ios::app);
      of.precision(15);

      for (int i = 0; i < Matrix.NumMyRows(); ++i)
      {
        int NumMyEntries;
        Matrix.ExtractMyRowCopy(i, Length, NumMyEntries, &Values[0], &Indices[0]);

        long long GRID = Matrix.RowMatrixRowMap().GID64(i);

        for (int j = 0; j < NumMyEntries; ++j)
          of << GRID << " " << Matrix.RowMatrixColMap().GID64(Indices[j])
             << " " << std::setiosflags(std::ios::scientific) << Values[j] << std::endl;
      }
      of.close();
    }
    Comm_.Barrier();
  }

  if (Comm_.MyPID() == 0)
  {
    std::ofstream of(FileName_.c_str(), std::ios::app);
    of << "</PointMatrix>" << std::endl;
    of.close();
  }
}

int RowMatrixToMatrixMarketFile( const char *filename, const Epetra_RowMatrix & A, 
				 const char * matrixName,
				 const char *matrixDescription, 
				 bool writeHeader) {
  long long M = A.NumGlobalRows64();
  long long N = A.NumGlobalCols64();
  long long nz = A.NumGlobalNonzeros64();

  FILE * handle = 0;

  if (A.RowMatrixRowMap().Comm().MyPID()==0) { // Only PE 0 does this section

    handle = fopen(filename,"w");
    if (!handle) {EPETRA_CHK_ERR(-1);}
    MM_typecode matcode;
    mm_initialize_typecode(&matcode);
    mm_set_matrix(&matcode);
    mm_set_coordinate(&matcode);
    mm_set_real(&matcode);

    if (writeHeader==true) { // Only write header if requested (true by default)
    
      if (mm_write_banner(handle, matcode)!=0) {EPETRA_CHK_ERR(-1);}
      
      if (matrixName!=0) fprintf(handle, "%% \n%% %s\n", matrixName);
      if (matrixDescription!=0) fprintf(handle, "%% %s\n%% \n", matrixDescription);
      
      if (mm_write_mtx_crd_size(handle, M, N, nz)!=0) {EPETRA_CHK_ERR(-1);}
    }
  }
    
  if (RowMatrixToHandle(handle, A)!=0) {EPETRA_CHK_ERR(-1);}// Everybody calls this routine

  if (A.RowMatrixRowMap().Comm().MyPID()==0) // Only PE 0 opened a file
    if (fclose(handle)!=0) {EPETRA_CHK_ERR(-1);}
  return(0);
}

int check(Epetra_RowMatrix& A, Epetra_RowMatrix & B, bool verbose)  {

  int ierr = 0;
  EPETRA_TEST_ERR(!A.Comm().NumProc()==B.Comm().NumProc(),ierr);
  EPETRA_TEST_ERR(!A.Comm().MyPID()==B.Comm().MyPID(),ierr);
  EPETRA_TEST_ERR(!A.Filled()==B.Filled(),ierr);
  EPETRA_TEST_ERR(!A.HasNormInf()==B.HasNormInf(),ierr);
  EPETRA_TEST_ERR(!A.LowerTriangular()==B.LowerTriangular(),ierr);
  EPETRA_TEST_ERR(!A.Map().SameAs(B.Map()),ierr);
  EPETRA_TEST_ERR(!A.MaxNumEntries()==B.MaxNumEntries(),ierr);
  EPETRA_TEST_ERR(!A.NumGlobalCols64()==B.NumGlobalCols64(),ierr);
  EPETRA_TEST_ERR(!A.NumGlobalDiagonals64()==B.NumGlobalDiagonals64(),ierr);
  EPETRA_TEST_ERR(!A.NumGlobalNonzeros64()==B.NumGlobalNonzeros64(),ierr);
  EPETRA_TEST_ERR(!A.NumGlobalRows64()==B.NumGlobalRows64(),ierr);
  EPETRA_TEST_ERR(!A.NumMyCols()==B.NumMyCols(),ierr);
  EPETRA_TEST_ERR(!A.NumMyDiagonals()==B.NumMyDiagonals(),ierr);
  EPETRA_TEST_ERR(!A.NumMyNonzeros()==B.NumMyNonzeros(),ierr);
  for (int i=0; i<A.NumMyRows(); i++) {
    int nA, nB;
    A.NumMyRowEntries(i,nA); B.NumMyRowEntries(i,nB);
    EPETRA_TEST_ERR(!nA==nB,ierr);
  }
  EPETRA_TEST_ERR(!A.NumMyRows()==B.NumMyRows(),ierr);
  EPETRA_TEST_ERR(!A.OperatorDomainMap().SameAs(B.OperatorDomainMap()),ierr);
  EPETRA_TEST_ERR(!A.OperatorRangeMap().SameAs(B.OperatorRangeMap()),ierr);
  EPETRA_TEST_ERR(!A.RowMatrixColMap().SameAs(B.RowMatrixColMap()),ierr);
  EPETRA_TEST_ERR(!A.RowMatrixRowMap().SameAs(B.RowMatrixRowMap()),ierr);
  EPETRA_TEST_ERR(!A.UpperTriangular()==B.UpperTriangular(),ierr);
  EPETRA_TEST_ERR(!A.UseTranspose()==B.UseTranspose(),ierr);

  int NumVectors = 5;
  { // No transpose case
    Epetra_MultiVector X(A.OperatorDomainMap(), NumVectors);
    Epetra_MultiVector YA1(A.OperatorRangeMap(), NumVectors);
    Epetra_MultiVector YA2(YA1);
    Epetra_MultiVector YB1(YA1);
    Epetra_MultiVector YB2(YA1);
    X.Random();

    bool transA = false;
    A.SetUseTranspose(transA);
    B.SetUseTranspose(transA);
    A.Apply(X,YA1);
    A.Multiply(transA, X, YA2);
    EPETRA_TEST_ERR(checkMultiVectors(YA1,YA2,"A Multiply and A Apply", verbose),ierr);
    B.Apply(X,YB1);
    EPETRA_TEST_ERR(checkMultiVectors(YA1,YB1,"A Multiply and B Multiply", verbose),ierr);
    B.Multiply(transA, X, YB2);
    EPETRA_TEST_ERR(checkMultiVectors(YA1,YB2,"A Multiply and B Apply", verbose), ierr);

  }
  {// transpose case
    Epetra_MultiVector X(A.OperatorRangeMap(), NumVectors);
    Epetra_MultiVector YA1(A.OperatorDomainMap(), NumVectors);
    Epetra_MultiVector YA2(YA1);
    Epetra_MultiVector YB1(YA1);
    Epetra_MultiVector YB2(YA1);
    X.Random();

    bool transA = true;
    A.SetUseTranspose(transA);
    B.SetUseTranspose(transA);
    A.Apply(X,YA1);
    A.Multiply(transA, X, YA2);
    EPETRA_TEST_ERR(checkMultiVectors(YA1,YA2, "A Multiply and A Apply (transpose)", verbose),ierr);
    B.Apply(X,YB1);
    EPETRA_TEST_ERR(checkMultiVectors(YA1,YB1, "A Multiply and B Multiply (transpose)", verbose),ierr);
    B.Multiply(transA, X,YB2);
    EPETRA_TEST_ERR(checkMultiVectors(YA1,YB2, "A Multiply and B Apply (transpose)", verbose),ierr);

  }

  Epetra_Vector diagA(A.RowMatrixRowMap());
  EPETRA_TEST_ERR(A.ExtractDiagonalCopy(diagA),ierr);
  Epetra_Vector diagB(B.RowMatrixRowMap());
  EPETRA_TEST_ERR(B.ExtractDiagonalCopy(diagB),ierr);
  EPETRA_TEST_ERR(checkMultiVectors(diagA,diagB, "ExtractDiagonalCopy", verbose),ierr);

  Epetra_Vector rowA(A.RowMatrixRowMap());
  EPETRA_TEST_ERR(A.InvRowSums(rowA),ierr);
  Epetra_Vector rowB(B.RowMatrixRowMap());
  EPETRA_TEST_ERR(B.InvRowSums(rowB),ierr)
  EPETRA_TEST_ERR(checkMultiVectors(rowA,rowB, "InvRowSums", verbose),ierr);

  Epetra_Vector colA(A.RowMatrixColMap());
  EPETRA_TEST_ERR(A.InvColSums(colA),ierr);
  Epetra_Vector colB(B.RowMatrixColMap());
  EPETRA_TEST_ERR(B.InvColSums(colB),ierr);
  EPETRA_TEST_ERR(checkMultiVectors(colA,colB, "InvColSums", verbose),ierr);

  EPETRA_TEST_ERR(checkValues(A.NormInf(), B.NormInf(), "NormInf before scaling", verbose), ierr);
  EPETRA_TEST_ERR(checkValues(A.NormOne(), B.NormOne(), "NormOne before scaling", verbose),ierr);

  EPETRA_TEST_ERR(A.RightScale(colA),ierr);
  EPETRA_TEST_ERR(B.RightScale(colB),ierr);


  EPETRA_TEST_ERR(A.LeftScale(rowA),ierr);
  EPETRA_TEST_ERR(B.LeftScale(rowB),ierr);

//.........这里部分代码省略.........

// ======================================================================
int Ifpack_PrintSparsity(const Epetra_RowMatrix& A, const char* InputFileName,
                         const int NumPDEEqns)
{

  int ltit;
  long long m,nc,nr,maxdim;
  double lrmrgn,botmrgn,xtit,ytit,ytitof,fnstit,siz = 0.0;
  double xl,xr, yb,yt, scfct,u2dot,frlw,delt,paperx;
  bool square = false;
  /*change square to .true. if you prefer a square frame around
    a rectangular matrix */
  double conv = 2.54;
  char munt = 'E'; /* put 'E' for centimeters, 'U' for inches */
  int ptitle = 0; /* position of the title, 0 under the drawing,
                     else above */
  FILE* fp = NULL;
  int NumMyRows;
  //int NumMyCols;
  long long NumGlobalRows;
  long long NumGlobalCols;
  int MyPID;
  int NumProc;
  char FileName[1024];
  char title[1024];

  const Epetra_Comm& Comm = A.Comm();

  /* --------------------- execution begins ---------------------- */

  if (strlen(A.Label()) != 0)
    strcpy(title, A.Label());
  else
    sprintf(title, "%s", "matrix");

  if (InputFileName == 0)
    sprintf(FileName, "%s.ps", title);
  else
    strcpy(FileName, InputFileName);

  MyPID = Comm.MyPID();
  NumProc = Comm.NumProc();

  NumMyRows = A.NumMyRows();
  //NumMyCols = A.NumMyCols();

  NumGlobalRows = A.NumGlobalRows64();
  NumGlobalCols = A.NumGlobalCols64();

  if (NumGlobalRows != NumGlobalCols)
    IFPACK_CHK_ERR(-1); // never tested

  /* to be changed for rect matrices */
  maxdim = (NumGlobalRows>NumGlobalCols)?NumGlobalRows:NumGlobalCols;
  maxdim /= NumPDEEqns;

  m = 1 + maxdim;
  nr = NumGlobalRows / NumPDEEqns + 1;
  nc = NumGlobalCols / NumPDEEqns + 1;

  if (munt == 'E') {
    u2dot = 72.0/conv;
    paperx = 21.0;
    siz = 10.0;
  }
  else {
    u2dot = 72.0;
    paperx = 8.5*conv;
    siz = siz*conv;
  }

  /* left and right margins (drawing is centered) */

  lrmrgn = (paperx-siz)/2.0;

  /* bottom margin : 2 cm */

  botmrgn = 2.0;
  /* c scaling factor */
  scfct = siz*u2dot/m;
  /* matrix frame line witdh */
  frlw = 0.25;
  /* font size for title (cm) */
  fnstit = 0.5;
  /* mfh 23 Jan 2013: title is always nonnull, since it's an array of
     fixed nonzero length.  The 'if' test thus results in a compiler
     warning. */
  /*if (title) ltit = strlen(title);*/
  /*else       ltit = 0;*/
  ltit = strlen(title);

  /* position of title : centered horizontally */
  /*                     at 1.0 cm vertically over the drawing */
  ytitof = 1.0;
  xtit = paperx/2.0;
  ytit = botmrgn+siz*nr/m + ytitof;
  /* almost exact bounding box */
  xl = lrmrgn*u2dot - scfct*frlw/2;
  xr = (lrmrgn+siz)*u2dot + scfct*frlw/2;
  yb = botmrgn*u2dot - scfct*frlw/2;
//.........这里部分代码省略.........

int Ifpack_Analyze(const Epetra_RowMatrix& A, const bool Cheap,
                   const int NumPDEEqns)
{

  int NumMyRows = A.NumMyRows();
  long long NumGlobalRows = A.NumGlobalRows64();
  long long NumGlobalCols = A.NumGlobalCols64();
  long long MyBandwidth = 0, GlobalBandwidth;
  long long MyLowerNonzeros = 0, MyUpperNonzeros = 0;
  long long GlobalLowerNonzeros, GlobalUpperNonzeros;
  long long MyDiagonallyDominant = 0, GlobalDiagonallyDominant;
  long long MyWeaklyDiagonallyDominant = 0, GlobalWeaklyDiagonallyDominant;
  double MyMin, MyAvg, MyMax;
  double GlobalMin, GlobalAvg, GlobalMax;
  long long GlobalStorage;

  bool verbose = (A.Comm().MyPID() == 0);

  GlobalStorage = sizeof(int*) * NumGlobalRows +
    sizeof(int) * A.NumGlobalNonzeros64() +
    sizeof(double) * A.NumGlobalNonzeros64();

  if (verbose) {
    print();
    Ifpack_PrintLine();
    print<const char*>("Label", A.Label());
    print<long long>("Global rows", NumGlobalRows);
    print<long long>("Global columns", NumGlobalCols);
    print<long long>("Stored nonzeros", A.NumGlobalNonzeros64());
    print<long long>("Nonzeros / row", A.NumGlobalNonzeros64() / NumGlobalRows);
    print<double>("Estimated storage (Mbytes)", 1.0e-6 * GlobalStorage);
  }

  long long NumMyActualNonzeros = 0, NumGlobalActualNonzeros;
  long long NumMyEmptyRows = 0, NumGlobalEmptyRows;
  long long NumMyDirichletRows = 0, NumGlobalDirichletRows;

  std::vector<int> colInd(A.MaxNumEntries());
  std::vector<double> colVal(A.MaxNumEntries());

  Epetra_Vector Diag(A.RowMatrixRowMap());
  Epetra_Vector RowSum(A.RowMatrixRowMap());
  Diag.PutScalar(0.0);
  RowSum.PutScalar(0.0);

  for (int i = 0 ; i < NumMyRows ; ++i) {

    long long GRID = A.RowMatrixRowMap().GID64(i);
    int Nnz;
    IFPACK_CHK_ERR(A.ExtractMyRowCopy(i,A.MaxNumEntries(),Nnz,
                                      &colVal[0],&colInd[0]));

    if (Nnz == 0)
      NumMyEmptyRows++;

    if (Nnz == 1)
      NumMyDirichletRows++;

    for (int j = 0 ; j < Nnz ; ++j) {

      double v = colVal[j];
      if (v < 0) v = -v;
      if (colVal[j] != 0.0)
        NumMyActualNonzeros++;

      long long GCID = A.RowMatrixColMap().GID64(colInd[j]);

      if (GCID != GRID)
        RowSum[i] += v;
      else
        Diag[i] = v;

      if (GCID < GRID)
        MyLowerNonzeros++;
      else if (GCID > GRID)
        MyUpperNonzeros++;
      long long b = GCID - GRID;
      if (b < 0) b = -b;
      if (b > MyBandwidth)
        MyBandwidth = b;
    }

    if (Diag[i] > RowSum[i])
      MyDiagonallyDominant++;

    if (Diag[i] >= RowSum[i])
      MyWeaklyDiagonallyDominant++;

    RowSum[i] += Diag[i];
  }

  // ======================== //
  // summing up global values //
  // ======================== //

  A.Comm().SumAll(&MyDiagonallyDominant,&GlobalDiagonallyDominant,1);
  A.Comm().SumAll(&MyWeaklyDiagonallyDominant,&GlobalWeaklyDiagonallyDominant,1);
  A.Comm().SumAll(&NumMyActualNonzeros, &NumGlobalActualNonzeros, 1);
  A.Comm().SumAll(&NumMyEmptyRows, &NumGlobalEmptyRows, 1);
  A.Comm().SumAll(&NumMyDirichletRows, &NumGlobalDirichletRows, 1);
//.........这里部分代码省略.........