int32_t
impl_bHYPRE_IJParCSRMatrix_SetRowSizes(
/* in */ bHYPRE_IJParCSRMatrix self,
/* in rarray[nrows] */ int32_t* sizes,
/* in */ int32_t nrows,
/* out */ sidl_BaseInterface *_ex)
{
*_ex = 0;
{
/* DO-NOT-DELETE splicer.begin(bHYPRE.IJParCSRMatrix.SetRowSizes) */
/* Insert the implementation of the SetRowSizes method here... */
int ierr=0;
struct bHYPRE_IJParCSRMatrix__data * data;
HYPRE_IJMatrix ij_A;
data = bHYPRE_IJParCSRMatrix__get_data( self );
ij_A = data -> ij_A;
ierr = HYPRE_IJMatrixSetRowSizes( ij_A, sizes );
return( ierr );
/* DO-NOT-DELETE splicer.end(bHYPRE.IJParCSRMatrix.SetRowSizes) */
}
}
int
hypre_SStructUMatrixInitialize( hypre_SStructMatrix *matrix )
{
HYPRE_IJMatrix ijmatrix = hypre_SStructMatrixIJMatrix(matrix);
hypre_SStructGraph *graph = hypre_SStructMatrixGraph(matrix);
hypre_SStructGrid *grid = hypre_SStructGraphGrid(graph);
int nparts = hypre_SStructGraphNParts(graph);
hypre_SStructPGrid **pgrids = hypre_SStructGraphPGrids(graph);
hypre_SStructStencil ***stencils = hypre_SStructGraphStencils(graph);
int nUventries = hypre_SStructGraphNUVEntries(graph);
int *iUventries = hypre_SStructGraphIUVEntries(graph);
hypre_SStructUVEntry **Uventries = hypre_SStructGraphUVEntries(graph);
int **nvneighbors = hypre_SStructGridNVNeighbors(grid);
hypre_StructGrid *sgrid;
hypre_SStructStencil *stencil;
int *split;
int nvars;
int nrows, nnzs ;
int part, var, entry, i, j, k,m,b;
int *row_sizes;
int max_row_size;
int matrix_type = hypre_SStructMatrixObjectType(matrix);
hypre_Box *gridbox;
hypre_Box *loopbox;
hypre_Box *ghostbox;
hypre_BoxArray *boxes;
int *num_ghost;
HYPRE_IJMatrixSetObjectType(ijmatrix, HYPRE_PARCSR);
/* GEC1002 the ghlocalsize is used to set the number of rows */
if (matrix_type == HYPRE_PARCSR)
{
nrows = hypre_SStructGridLocalSize(grid);
}
if (matrix_type == HYPRE_SSTRUCT || matrix_type == HYPRE_STRUCT)
{
nrows = hypre_SStructGridGhlocalSize(grid) ;
}
/* set row sizes */
m = 0;
row_sizes = hypre_CTAlloc(int, nrows);
max_row_size = 0;
for (part = 0; part < nparts; part++)
{
nvars = hypre_SStructPGridNVars(pgrids[part]);
for (var = 0; var < nvars; var++)
{
sgrid = hypre_SStructPGridSGrid(pgrids[part], var);
stencil = stencils[part][var];
split = hypre_SStructMatrixSplit(matrix, part, var);
nnzs = 0;
for (entry = 0; entry < hypre_SStructStencilSize(stencil); entry++)
{
if (split[entry] == -1)
{
nnzs++;
}
}
#if 0
/* TODO: For now, assume stencil is full/complete */
if (hypre_SStructMatrixSymmetric(matrix))
{
nnzs = 2*nnzs - 1;
}
#endif
/**************/
boxes = hypre_StructGridBoxes(sgrid) ;
num_ghost = hypre_StructGridNumGhost(sgrid);
for (b = 0; b < hypre_BoxArraySize(boxes); b++)
{
gridbox = hypre_BoxArrayBox(boxes, b);
ghostbox = hypre_BoxCreate();
loopbox = hypre_BoxCreate();
hypre_CopyBox(gridbox,ghostbox);
hypre_BoxExpand(ghostbox,num_ghost);
if (matrix_type == HYPRE_SSTRUCT || matrix_type == HYPRE_STRUCT)
{
hypre_CopyBox(ghostbox,loopbox);
}
if (matrix_type == HYPRE_PARCSR)
{
hypre_CopyBox(gridbox,loopbox);
}
for (k = hypre_BoxIMinZ(loopbox); k <= hypre_BoxIMaxZ(loopbox); k++)
{
for (j = hypre_BoxIMinY(loopbox); j <= hypre_BoxIMaxY(loopbox); j++)
{
for (i = hypre_BoxIMinX(loopbox); i <= hypre_BoxIMaxX(loopbox); i++)
{
if ( ( ( i>=hypre_BoxIMinX(gridbox) )
&& ( j>=hypre_BoxIMinY(gridbox) ) )
&& ( k>=hypre_BoxIMinZ(gridbox) ) )
{
if ( ( ( i<=hypre_BoxIMaxX(gridbox) )
&& ( j<=hypre_BoxIMaxY(gridbox) ) )
&& ( k<=hypre_BoxIMaxZ(gridbox) ) )
{
row_sizes[m] = nnzs;
max_row_size = hypre_max(max_row_size, row_sizes[m]);
}
}
m++;
}
}
}
hypre_BoxDestroy(ghostbox);
hypre_BoxDestroy(loopbox);
}
if (nvneighbors[part][var])
{
max_row_size = hypre_max(max_row_size,
hypre_SStructStencilSize(stencil));
}
/*********************/
}
}
/* GEC0902 essentially for each UVentry we figure out how many extra columns
* we need to add to the rowsizes */
for (entry = 0; entry < nUventries; entry++)
{
i = iUventries[entry];
row_sizes[i] += hypre_SStructUVEntryNUEntries(Uventries[i]);
max_row_size = hypre_max(max_row_size, row_sizes[i]);
}
/* ZTODO: Update row_sizes based on neighbor off-part couplings */
HYPRE_IJMatrixSetRowSizes (ijmatrix, (const int *) row_sizes);
hypre_TFree(row_sizes);
hypre_SStructMatrixTmpColCoords(matrix) =
hypre_CTAlloc(HYPRE_BigInt, max_row_size);
hypre_SStructMatrixTmpCoeffs(matrix) =
hypre_CTAlloc(double, max_row_size);
/* GEC1002 at this point the processor has the partitioning (creation of ij) */
HYPRE_IJMatrixInitialize(ijmatrix);
return hypre_error_flag;
}
inline void numfact(unsigned int ncol, int* I, int* loc2glob, int* J, K* C) {
static_assert(std::is_same<double, K>::value, "Hypre only supports double-precision floating-point real numbers");
static_assert(S == 'G', "Hypre only supports nonsymmetric matrices");
HYPRE_IJMatrixCreate(DMatrix::_communicator, loc2glob[0], loc2glob[1], loc2glob[0], loc2glob[1], &_A);
HYPRE_IJMatrixSetObjectType(_A, HYPRE_PARCSR);
HYPRE_IJMatrixSetRowSizes(_A, I + 1);
_local = ncol;
int* rows = new int[3 * _local]();
int* diag_sizes = rows + _local;
int* offdiag_sizes = diag_sizes + _local;
rows[0] = I[0];
for(unsigned int i = 0; i < _local; ++i) {
std::for_each(J + rows[0], J + rows[0] + I[i + 1], [&](int& j) { (j < loc2glob[0] || loc2glob[1] < j) ? ++offdiag_sizes[i] : ++diag_sizes[i]; });
rows[0] += I[i + 1];
}
HYPRE_IJMatrixSetDiagOffdSizes(_A, diag_sizes, offdiag_sizes);
HYPRE_IJMatrixSetMaxOffProcElmts(_A, 0);
HYPRE_IJMatrixInitialize(_A);
std::iota(rows, rows + _local, loc2glob[0]);
HYPRE_IJMatrixSetValues(_A, _local, I + 1, rows, J, C);
HYPRE_IJMatrixAssemble(_A);
HYPRE_IJVectorCreate(DMatrix::_communicator, loc2glob[0], loc2glob[1], &_b);
HYPRE_IJVectorSetObjectType(_b, HYPRE_PARCSR);
HYPRE_IJVectorInitialize(_b);
HYPRE_IJVectorCreate(DMatrix::_communicator, loc2glob[0], loc2glob[1], &_x);
HYPRE_IJVectorSetObjectType(_x, HYPRE_PARCSR);
HYPRE_IJVectorInitialize(_x);
delete [] rows;
delete [] I;
delete [] loc2glob;
HYPRE_BoomerAMGCreate(_strategy == 1 ? &_solver : &_precond);
HYPRE_BoomerAMGSetCoarsenType(_strategy == 1 ? _solver : _precond, 6); /* Falgout coarsening */
HYPRE_BoomerAMGSetRelaxType(_strategy == 1 ? _solver : _precond, 6); /* G-S/Jacobi hybrid relaxation */
HYPRE_BoomerAMGSetNumSweeps(_strategy == 1 ? _solver : _precond, 1); /* sweeps on each level */
HYPRE_BoomerAMGSetMaxLevels(_strategy == 1 ? _solver : _precond, 10); /* maximum number of levels */
HYPRE_ParCSRMatrix parcsr_A;
HYPRE_IJMatrixGetObject(_A, reinterpret_cast<void**>(&parcsr_A));
HYPRE_ParVector par_b;
HYPRE_IJVectorGetObject(_b, reinterpret_cast<void**>(&par_b));
HYPRE_ParVector par_x;
HYPRE_IJVectorGetObject(_x, reinterpret_cast<void**>(&par_x));
if(_strategy == 1) {
HYPRE_BoomerAMGSetTol(_solver, 1.0e-8);
HYPRE_BoomerAMGSetMaxIter(_solver, 1000);
HYPRE_BoomerAMGSetPrintLevel(_solver, 1);
HYPRE_BoomerAMGSetup(_solver, parcsr_A, nullptr, nullptr);
}
else {
HYPRE_BoomerAMGSetTol(_precond, 0.0);
HYPRE_BoomerAMGSetMaxIter(_precond, 1);
HYPRE_BoomerAMGSetPrintLevel(_precond, 1);
if(_strategy == 2) {
HYPRE_ParCSRPCGCreate(DMatrix::_communicator, &_solver);
HYPRE_PCGSetMaxIter(_solver, 500);
HYPRE_PCGSetTol(_solver, 1.0e-8);
HYPRE_PCGSetTwoNorm(_solver, 1);
HYPRE_PCGSetPrintLevel(_solver, 1);
HYPRE_PCGSetLogging(_solver, 1);
HYPRE_PCGSetPrecond(_solver, reinterpret_cast<HYPRE_PtrToSolverFcn>(HYPRE_BoomerAMGSolve), reinterpret_cast<HYPRE_PtrToSolverFcn>(HYPRE_BoomerAMGSetup), _precond);
HYPRE_ParCSRPCGSetup(_solver, parcsr_A, par_b, par_x);
}
else {
HYPRE_ParCSRFlexGMRESCreate(DMatrix::_communicator, &_solver);
HYPRE_FlexGMRESSetKDim(_solver, 50);
HYPRE_FlexGMRESSetMaxIter(_solver, 500);
HYPRE_FlexGMRESSetTol(_solver, 1.0e-8);
HYPRE_FlexGMRESSetPrintLevel(_solver, 1);
HYPRE_FlexGMRESSetLogging(_solver, 1);
HYPRE_FlexGMRESSetPrecond(_solver, reinterpret_cast<HYPRE_PtrToSolverFcn>(HYPRE_BoomerAMGSolve), reinterpret_cast<HYPRE_PtrToSolverFcn>(HYPRE_BoomerAMGSetup), _precond);
HYPRE_ParCSRFlexGMRESSetup(_solver, parcsr_A, par_b, par_x);
}
}
}
