HYPRE_Int
main( HYPRE_Int argc,
char *argv[] )
{
hypre_ParVector *vector1;
hypre_ParVector *vector2;
hypre_ParVector *tmp_vector;
HYPRE_Int num_procs, my_id;
HYPRE_Int global_size = 20;
HYPRE_Int local_size;
HYPRE_Int first_index;
HYPRE_Int num_vectors, vecstride, idxstride;
HYPRE_Int i, j;
HYPRE_Int *partitioning;
double prod;
double *data, *data2;
hypre_Vector *vector;
hypre_Vector *local_vector;
hypre_Vector *local_vector2;
/* Initialize MPI */
hypre_MPI_Init(&argc, &argv);
hypre_MPI_Comm_size(hypre_MPI_COMM_WORLD, &num_procs );
hypre_MPI_Comm_rank(hypre_MPI_COMM_WORLD, &my_id );
hypre_printf(" my_id: %d num_procs: %d\n", my_id, num_procs);
partitioning = NULL;
num_vectors = 3;
vector1 = hypre_ParMultiVectorCreate
( hypre_MPI_COMM_WORLD, global_size, partitioning, num_vectors );
partitioning = hypre_ParVectorPartitioning(vector1);
hypre_ParVectorInitialize(vector1);
local_vector = hypre_ParVectorLocalVector(vector1);
data = hypre_VectorData(local_vector);
local_size = hypre_VectorSize(local_vector);
vecstride = hypre_VectorVectorStride(local_vector);
idxstride = hypre_VectorIndexStride(local_vector);
first_index = partitioning[my_id];
hypre_printf("vecstride=%i idxstride=%i local_size=%i num_vectors=%i",
vecstride, idxstride, local_size, num_vectors );
for (j=0; j<num_vectors; ++j )
for (i=0; i < local_size; i++)
data[ j*vecstride + i*idxstride ] = first_index+i + 100*j;
hypre_ParVectorPrint(vector1, "Vector");
local_vector2 = hypre_SeqMultiVectorCreate( global_size, num_vectors );
hypre_SeqVectorInitialize(local_vector2);
data2 = hypre_VectorData(local_vector2);
vecstride = hypre_VectorVectorStride(local_vector2);
idxstride = hypre_VectorIndexStride(local_vector2);
for (j=0; j<num_vectors; ++j )
for (i=0; i < global_size; i++)
data2[ j*vecstride + i*idxstride ] = i + 100*j;
/* partitioning = hypre_CTAlloc(HYPRE_Int,4);
partitioning[0] = 0;
partitioning[1] = 10;
partitioning[2] = 10;
partitioning[3] = 20;
*/
partitioning = hypre_CTAlloc(HYPRE_Int,1+num_procs);
hypre_GeneratePartitioning( global_size, num_procs, &partitioning );
vector2 = hypre_VectorToParVector(hypre_MPI_COMM_WORLD,local_vector2,partitioning);
hypre_ParVectorSetPartitioningOwner(vector2,0);
hypre_ParVectorPrint(vector2, "Convert");
vector = hypre_ParVectorToVectorAll(vector2);
/*-----------------------------------------------------------
* Copy the vector into tmp_vector
*-----------------------------------------------------------*/
/* Read doesn't work for multivectors yet...
tmp_vector = hypre_ParVectorRead(hypre_MPI_COMM_WORLD, "Convert");*/
tmp_vector = hypre_ParMultiVectorCreate
( hypre_MPI_COMM_WORLD, global_size, partitioning, num_vectors );
hypre_ParVectorInitialize( tmp_vector );
hypre_ParVectorCopy( vector2, tmp_vector );
/*
tmp_vector = hypre_ParVectorCreate(hypre_MPI_COMM_WORLD,global_size,partitioning);
hypre_ParVectorSetPartitioningOwner(tmp_vector,0);
hypre_ParVectorInitialize(tmp_vector);
hypre_ParVectorCopy(vector1, tmp_vector);
hypre_ParVectorPrint(tmp_vector,"Copy");
*/
/*-----------------------------------------------------------
* Scale tmp_vector
*-----------------------------------------------------------*/
hypre_ParVectorScale(2.0, tmp_vector);
hypre_ParVectorPrint(tmp_vector,"Scale");
/*-----------------------------------------------------------
* Do an Axpy (2*vector - vector) = vector
*-----------------------------------------------------------*/
hypre_ParVectorAxpy(-1.0, vector1, tmp_vector);
hypre_ParVectorPrint(tmp_vector,"Axpy");
/*-----------------------------------------------------------
* Do an inner product vector* tmp_vector
*-----------------------------------------------------------*/
prod = hypre_ParVectorInnerProd(vector1, tmp_vector);
hypre_printf (" prod: %8.2f \n", prod);
/*-----------------------------------------------------------
* Finalize things
*-----------------------------------------------------------*/
hypre_ParVectorDestroy(vector1);
hypre_ParVectorDestroy(vector2);
hypre_ParVectorDestroy(tmp_vector);
hypre_SeqVectorDestroy(local_vector2);
if (vector) hypre_SeqVectorDestroy(vector);
/* Finalize MPI */
hypre_MPI_Finalize();
return 0;
}
HYPRE_Int
hypre_Maxwell_PhysBdy( hypre_SStructGrid **grid_l,
HYPRE_Int num_levels,
hypre_Index rfactors,
HYPRE_Int ***BdryRanksl_ptr,
HYPRE_Int **BdryRanksCntsl_ptr )
{
MPI_Comm comm= (grid_l[0]-> comm);
HYPRE_Int **BdryRanks_l;
HYPRE_Int *BdryRanksCnts_l;
HYPRE_Int *npts;
HYPRE_Int *ranks, *upper_rank, *lower_rank;
hypre_BoxManEntry *boxman_entry;
hypre_SStructGrid *grid;
hypre_SStructPGrid *pgrid;
hypre_StructGrid *cell_fgrid, *cell_cgrid, *sgrid;
hypre_BoxArrayArray ****bdry;
hypre_BoxArrayArray *fbdry;
hypre_BoxArrayArray *cbdry;
hypre_BoxArray *box_array;
hypre_BoxArray *fboxes, *cboxes;
hypre_Box *fbox, *cbox;
hypre_Box *box, *contract_fbox, rbox;
hypre_Box intersect;
HYPRE_Int **cbox_mapping, **fbox_mapping;
HYPRE_Int **boxes_with_bdry;
HYPRE_Int ndim, nvars;
HYPRE_Int nboxes, nfboxes;
HYPRE_Int boxi;
hypre_Index zero_shift, upper_shift, lower_shift;
hypre_Index loop_size, start, index, lindex;
HYPRE_Int i, j, k, l, m, n, p;
HYPRE_Int d;
HYPRE_Int cnt;
HYPRE_Int part= 0; /* NOTE, ASSUMING ONE PART */
HYPRE_Int matrix_type= HYPRE_PARCSR;
HYPRE_Int myproc;
HYPRE_Int ierr= 0;
hypre_MPI_Comm_rank(comm, &myproc);
ndim= hypre_SStructGridNDim(grid_l[0]);
hypre_SetIndex3(zero_shift, 0, 0, 0);
hypre_BoxInit(&intersect, ndim);
/* bounding global ranks of this processor & allocate boundary box markers. */
upper_rank= hypre_CTAlloc(HYPRE_Int, num_levels);
lower_rank= hypre_CTAlloc(HYPRE_Int, num_levels);
boxes_with_bdry= hypre_TAlloc(HYPRE_Int *, num_levels);
for (i= 0; i< num_levels; i++)
{
grid = grid_l[i];
lower_rank[i]= hypre_SStructGridStartRank(grid);
/* note we are assuming only one part */
pgrid= hypre_SStructGridPGrid(grid, part);
nvars= hypre_SStructPGridNVars(pgrid);
sgrid= hypre_SStructPGridSGrid(pgrid, nvars-1);
box_array= hypre_StructGridBoxes(sgrid);
box = hypre_BoxArrayBox(box_array, hypre_BoxArraySize(box_array)-1);
hypre_SStructGridBoxProcFindBoxManEntry(grid, part, nvars-1,
hypre_BoxArraySize(box_array)-1, myproc, &boxman_entry);
hypre_SStructBoxManEntryGetGlobalCSRank(boxman_entry, hypre_BoxIMax(box),
&upper_rank[i]);
sgrid= hypre_SStructPGridCellSGrid(pgrid);
box_array= hypre_StructGridBoxes(sgrid);
boxes_with_bdry[i]= hypre_CTAlloc(HYPRE_Int, hypre_BoxArraySize(box_array));
}
/*-----------------------------------------------------------------------------
* construct box_number mapping between levels, and offset strides because of
* projection coarsening. Note: from the way the coarse boxes are created and
* numbered, to determine the coarse box that matches the fbox, we need to
* only check the tail end of the list of cboxes. In fact, given fbox_i,
* if it's coarsened extents do not interesect with the first coarse box of the
* tail end, then this fbox vanishes in the coarsening.
* c/fbox_mapping gives the fine/coarse box mapping between two consecutive levels
* of the multilevel hierarchy.
*-----------------------------------------------------------------------------*/
if (num_levels > 1)
{
cbox_mapping= hypre_CTAlloc(HYPRE_Int *, num_levels);
fbox_mapping= hypre_CTAlloc(HYPRE_Int *, num_levels);
}
HYPRE_Int
HYPRE_IJMatrixPrint( HYPRE_IJMatrix matrix,
const char *filename )
{
MPI_Comm comm;
HYPRE_Int *row_partitioning;
HYPRE_Int *col_partitioning;
HYPRE_Int ilower, iupper, jlower, jupper;
HYPRE_Int i, j, ii;
HYPRE_Int ncols, *cols;
HYPRE_Complex *values;
HYPRE_Int myid;
char new_filename[255];
FILE *file;
void *object;
if (!matrix)
{
hypre_error_in_arg(1);
return hypre_error_flag;
}
if ( (hypre_IJMatrixObjectType(matrix) != HYPRE_PARCSR) )
{
hypre_error_in_arg(1);
return hypre_error_flag;
}
comm = hypre_IJMatrixComm(matrix);
hypre_MPI_Comm_rank(comm, &myid);
hypre_sprintf(new_filename,"%s.%05d", filename, myid);
if ((file = fopen(new_filename, "w")) == NULL)
{
hypre_error_in_arg(2);
return hypre_error_flag;
}
row_partitioning = hypre_IJMatrixRowPartitioning(matrix);
col_partitioning = hypre_IJMatrixColPartitioning(matrix);
#ifdef HYPRE_NO_GLOBAL_PARTITION
ilower = row_partitioning[0];
iupper = row_partitioning[1] - 1;
jlower = col_partitioning[0];
jupper = col_partitioning[1] - 1;
#else
ilower = row_partitioning[myid];
iupper = row_partitioning[myid+1] - 1;
jlower = col_partitioning[myid];
jupper = col_partitioning[myid+1] - 1;
#endif
hypre_fprintf(file, "%d %d %d %d\n", ilower, iupper, jlower, jupper);
HYPRE_IJMatrixGetObject(matrix, &object);
for (i = ilower; i <= iupper; i++)
{
if ( hypre_IJMatrixObjectType(matrix) == HYPRE_PARCSR )
{
#ifdef HYPRE_NO_GLOBAL_PARTITION
ii = i - hypre_IJMatrixGlobalFirstRow(matrix);
#else
ii = i - row_partitioning[0];
#endif
HYPRE_ParCSRMatrixGetRow((HYPRE_ParCSRMatrix) object,
ii, &ncols, &cols, &values);
for (j = 0; j < ncols; j++)
{
#ifdef HYPRE_NO_GLOBAL_PARTITION
cols[j] += hypre_IJMatrixGlobalFirstCol(matrix);
#else
cols[j] += col_partitioning[0];
#endif
}
}
for (j = 0; j < ncols; j++)
{
hypre_fprintf(file, "%d %d %.14e\n", i, cols[j], values[j]);
}
if ( hypre_IJMatrixObjectType(matrix) == HYPRE_PARCSR )
{
for (j = 0; j < ncols; j++)
{
#ifdef HYPRE_NO_GLOBAL_PARTITION
cols[j] -= hypre_IJMatrixGlobalFirstCol(matrix);
#else
cols[j] -= col_partitioning[0];
#endif
}
HYPRE_ParCSRMatrixRestoreRow((HYPRE_ParCSRMatrix) object,
ii, &ncols, &cols, &values);
}
}
fclose(file);
return hypre_error_flag;
}
HYPRE_Int
hypre_BoomerAMGSolveT( void *amg_vdata,
hypre_ParCSRMatrix *A,
hypre_ParVector *f,
hypre_ParVector *u )
{
MPI_Comm comm = hypre_ParCSRMatrixComm(A);
hypre_ParAMGData *amg_data = amg_vdata;
/* Data Structure variables */
HYPRE_Int amg_print_level;
HYPRE_Int amg_logging;
double *num_coeffs;
HYPRE_Int *num_variables;
double cycle_op_count;
HYPRE_Int num_levels;
/* HYPRE_Int num_unknowns; */
double tol;
char *file_name;
hypre_ParCSRMatrix **A_array;
hypre_ParVector **F_array;
hypre_ParVector **U_array;
/* Local variables */
/*FILE *fp;*/
HYPRE_Int j;
HYPRE_Int Solve_err_flag;
HYPRE_Int min_iter;
HYPRE_Int max_iter;
HYPRE_Int cycle_count;
double total_coeffs;
HYPRE_Int total_variables;
HYPRE_Int num_procs, my_id;
double alpha = 1.0;
double beta = -1.0;
double cycle_cmplxty = 0.0;
double operat_cmplxty;
double grid_cmplxty;
double conv_factor;
double resid_nrm;
double resid_nrm_init;
double relative_resid;
double rhs_norm;
double old_resid;
hypre_ParVector *Vtemp;
hypre_ParVector *Residual;
hypre_MPI_Comm_size(comm, &num_procs);
hypre_MPI_Comm_rank(comm,&my_id);
amg_print_level = hypre_ParAMGDataPrintLevel(amg_data);
amg_logging = hypre_ParAMGDataLogging(amg_data);
if ( amg_logging>1 )
Residual = hypre_ParAMGDataResidual(amg_data);
file_name = hypre_ParAMGDataLogFileName(amg_data);
/* num_unknowns = hypre_ParAMGDataNumUnknowns(amg_data); */
num_levels = hypre_ParAMGDataNumLevels(amg_data);
A_array = hypre_ParAMGDataAArray(amg_data);
F_array = hypre_ParAMGDataFArray(amg_data);
U_array = hypre_ParAMGDataUArray(amg_data);
tol = hypre_ParAMGDataTol(amg_data);
min_iter = hypre_ParAMGDataMinIter(amg_data);
max_iter = hypre_ParAMGDataMaxIter(amg_data);
num_coeffs = hypre_CTAlloc(double, num_levels);
num_variables = hypre_CTAlloc(HYPRE_Int, num_levels);
num_coeffs[0] = hypre_ParCSRMatrixDNumNonzeros(A_array[0]);
num_variables[0] = hypre_ParCSRMatrixGlobalNumRows(A_array[0]);
A_array[0] = A;
F_array[0] = f;
U_array[0] = u;
/* Vtemp = hypre_ParVectorCreate(hypre_ParCSRMatrixComm(A_array[0]),
hypre_ParCSRMatrixGlobalNumRows(A_array[0]),
hypre_ParCSRMatrixRowStarts(A_array[0]));
hypre_ParVectorInitialize(Vtemp);
hypre_ParVectorSetPartitioningOwner(Vtemp,0);
hypre_ParAMGDataVtemp(amg_data) = Vtemp;
*/
Vtemp = hypre_ParAMGDataVtemp(amg_data);
for (j = 1; j < num_levels; j++)
{
num_coeffs[j] = hypre_ParCSRMatrixDNumNonzeros(A_array[j]);
num_variables[j] = hypre_ParCSRMatrixGlobalNumRows(A_array[j]);
}
/*-----------------------------------------------------------------------
* Write the solver parameters
*-----------------------------------------------------------------------*/
if (my_id == 0 && amg_print_level > 1)
hypre_BoomerAMGWriteSolverParams(amg_data);
/*-----------------------------------------------------------------------
* Initialize the solver error flag and assorted bookkeeping variables
*-----------------------------------------------------------------------*/
Solve_err_flag = 0;
total_coeffs = 0;
total_variables = 0;
cycle_count = 0;
operat_cmplxty = 0;
grid_cmplxty = 0;
/*-----------------------------------------------------------------------
* open the log file and write some initial info
*-----------------------------------------------------------------------*/
if (my_id == 0 && amg_print_level > 1)
{
/*fp = fopen(file_name, "a");*/
hypre_printf("\n\nAMG SOLUTION INFO:\n");
}
/*-----------------------------------------------------------------------
* Compute initial fine-grid residual and print to logfile
*-----------------------------------------------------------------------*/
if ( amg_logging > 1 ) {
hypre_ParVectorCopy(F_array[0], Residual );
hypre_ParCSRMatrixMatvecT(alpha, A_array[0], U_array[0], beta, Residual );
resid_nrm = sqrt(hypre_ParVectorInnerProd( Residual, Residual ));
}
else {
hypre_ParVectorCopy(F_array[0], Vtemp);
hypre_ParCSRMatrixMatvecT(alpha, A_array[0], U_array[0], beta, Vtemp);
resid_nrm = sqrt(hypre_ParVectorInnerProd(Vtemp, Vtemp));
}
resid_nrm_init = resid_nrm;
rhs_norm = sqrt(hypre_ParVectorInnerProd(f, f));
relative_resid = 9999;
if (rhs_norm)
{
relative_resid = resid_nrm_init / rhs_norm;
}
if (my_id ==0 && (amg_print_level > 1))
{
hypre_printf(" relative\n");
hypre_printf(" residual factor residual\n");
hypre_printf(" -------- ------ --------\n");
hypre_printf(" Initial %e %e\n",resid_nrm_init,
relative_resid);
}
/*-----------------------------------------------------------------------
* Main V-cycle loop
*-----------------------------------------------------------------------*/
while ((relative_resid >= tol || cycle_count < min_iter)
&& cycle_count < max_iter
&& Solve_err_flag == 0)
{
hypre_ParAMGDataCycleOpCount(amg_data) = 0;
/* Op count only needed for one cycle */
Solve_err_flag = hypre_BoomerAMGCycleT(amg_data, F_array, U_array);
old_resid = resid_nrm;
/*---------------------------------------------------------------
* Compute fine-grid residual and residual norm
*----------------------------------------------------------------*/
if ( amg_logging > 1 ) {
hypre_ParVectorCopy(F_array[0], Residual );
hypre_ParCSRMatrixMatvecT(alpha, A_array[0], U_array[0], beta, Residual );
resid_nrm = sqrt(hypre_ParVectorInnerProd( Residual, Residual ));
}
else {
hypre_ParVectorCopy(F_array[0], Vtemp);
hypre_ParCSRMatrixMatvecT(alpha, A_array[0], U_array[0], beta, Vtemp);
resid_nrm = sqrt(hypre_ParVectorInnerProd(Vtemp, Vtemp));
}
conv_factor = resid_nrm / old_resid;
relative_resid = 9999;
if (rhs_norm)
{
relative_resid = resid_nrm / rhs_norm;
}
++cycle_count;
hypre_ParAMGDataRelativeResidualNorm(amg_data) = relative_resid;
hypre_ParAMGDataNumIterations(amg_data) = cycle_count;
if (my_id == 0 && (amg_print_level > 1))
{
hypre_printf(" Cycle %2d %e %f %e \n", cycle_count,
resid_nrm, conv_factor, relative_resid);
}
}
if (cycle_count == max_iter) Solve_err_flag = 1;
/*-----------------------------------------------------------------------
* Compute closing statistics
*-----------------------------------------------------------------------*/
conv_factor = pow((resid_nrm/resid_nrm_init),(1.0/((double) cycle_count)));
for (j=0;j<hypre_ParAMGDataNumLevels(amg_data);j++)
{
total_coeffs += num_coeffs[j];
total_variables += num_variables[j];
}
cycle_op_count = hypre_ParAMGDataCycleOpCount(amg_data);
if (num_variables[0])
grid_cmplxty = ((double) total_variables) / ((double) num_variables[0]);
if (num_coeffs[0])
{
operat_cmplxty = total_coeffs / num_coeffs[0];
cycle_cmplxty = cycle_op_count / num_coeffs[0];
}
if (my_id == 0 && amg_print_level > 1)
{
if (Solve_err_flag == 1)
{
hypre_printf("\n\n==============================================");
hypre_printf("\n NOTE: Convergence tolerance was not achieved\n");
hypre_printf(" within the allowed %d V-cycles\n",max_iter);
hypre_printf("==============================================");
}
hypre_printf("\n\n Average Convergence Factor = %f",conv_factor);
hypre_printf("\n\n Complexity: grid = %f\n",grid_cmplxty);
hypre_printf(" operator = %f\n",operat_cmplxty);
hypre_printf(" cycle = %f\n\n",cycle_cmplxty);
}
/*----------------------------------------------------------
* Close the output file (if open)
*----------------------------------------------------------*/
/*if (my_id == 0 && amg_print_level >= 1)
{
fclose(fp);
}*/
hypre_TFree(num_coeffs);
hypre_TFree(num_variables);
return(Solve_err_flag);
}
HYPRE_Int
HYPRE_IJMatrixCreate( MPI_Comm comm,
HYPRE_Int ilower,
HYPRE_Int iupper,
HYPRE_Int jlower,
HYPRE_Int jupper,
HYPRE_IJMatrix *matrix )
{
HYPRE_Int *row_partitioning;
HYPRE_Int *col_partitioning;
HYPRE_Int *info;
HYPRE_Int num_procs;
HYPRE_Int myid;
hypre_IJMatrix *ijmatrix;
#ifdef HYPRE_NO_GLOBAL_PARTITION
HYPRE_Int row0, col0, rowN, colN;
#else
HYPRE_Int *recv_buf;
HYPRE_Int i, i4;
HYPRE_Int square;
#endif
ijmatrix = hypre_CTAlloc(hypre_IJMatrix, 1);
hypre_IJMatrixComm(ijmatrix) = comm;
hypre_IJMatrixObject(ijmatrix) = NULL;
hypre_IJMatrixTranslator(ijmatrix) = NULL;
hypre_IJMatrixObjectType(ijmatrix) = HYPRE_UNITIALIZED;
hypre_IJMatrixAssembleFlag(ijmatrix) = 0;
hypre_IJMatrixPrintLevel(ijmatrix) = 0;
hypre_MPI_Comm_size(comm,&num_procs);
hypre_MPI_Comm_rank(comm, &myid);
if (ilower > iupper+1 || ilower < 0)
{
hypre_error_in_arg(2);
hypre_TFree(ijmatrix);
return hypre_error_flag;
}
if (iupper < -1)
{
hypre_error_in_arg(3);
hypre_TFree(ijmatrix);
return hypre_error_flag;
}
if (jlower > jupper+1 || jlower < 0)
{
hypre_error_in_arg(4);
hypre_TFree(ijmatrix);
return hypre_error_flag;
}
if (jupper < -1)
{
hypre_error_in_arg(5);
hypre_TFree(ijmatrix);
return hypre_error_flag;
}
#ifdef HYPRE_NO_GLOBAL_PARTITION
info = hypre_CTAlloc(HYPRE_Int,2);
row_partitioning = hypre_CTAlloc(HYPRE_Int, 2);
col_partitioning = hypre_CTAlloc(HYPRE_Int, 2);
row_partitioning[0] = ilower;
row_partitioning[1] = iupper+1;
col_partitioning[0] = jlower;
col_partitioning[1] = jupper+1;
/* now we need the global number of rows and columns as well
as the global first row and column index */
/* proc 0 has the first row and col */
if (myid==0)
{
info[0] = ilower;
info[1] = jlower;
}
hypre_MPI_Bcast(info, 2, HYPRE_MPI_INT, 0, comm);
row0 = info[0];
col0 = info[1];
/* proc (num_procs-1) has the last row and col */
if (myid == (num_procs-1))
{
info[0] = iupper;
info[1] = jupper;
}
hypre_MPI_Bcast(info, 2, HYPRE_MPI_INT, num_procs-1, comm);
rowN = info[0];
colN = info[1];
hypre_IJMatrixGlobalFirstRow(ijmatrix) = row0;
hypre_IJMatrixGlobalFirstCol(ijmatrix) = col0;
hypre_IJMatrixGlobalNumRows(ijmatrix) = rowN - row0 + 1;
hypre_IJMatrixGlobalNumCols(ijmatrix) = colN - col0 + 1;
hypre_TFree(info);
#else
info = hypre_CTAlloc(HYPRE_Int,4);
recv_buf = hypre_CTAlloc(HYPRE_Int,4*num_procs);
row_partitioning = hypre_CTAlloc(HYPRE_Int, num_procs+1);
info[0] = ilower;
info[1] = iupper;
info[2] = jlower;
info[3] = jupper;
/* Generate row- and column-partitioning through information exchange
across all processors, check whether the matrix is square, and
if the partitionings match. i.e. no overlaps or gaps,
if there are overlaps or gaps in the row partitioning or column
partitioning , ierr will be set to -9 or -10, respectively */
hypre_MPI_Allgather(info,4,HYPRE_MPI_INT,recv_buf,4,HYPRE_MPI_INT,comm);
row_partitioning[0] = recv_buf[0];
square = 1;
for (i=0; i < num_procs-1; i++)
{
i4 = 4*i;
if ( recv_buf[i4+1] != (recv_buf[i4+4]-1) )
{
hypre_error(HYPRE_ERROR_GENERIC);
hypre_TFree(ijmatrix);
hypre_TFree(info);
hypre_TFree(recv_buf);
hypre_TFree(row_partitioning);
return hypre_error_flag;
}
else
row_partitioning[i+1] = recv_buf[i4+4];
if ((square && (recv_buf[i4] != recv_buf[i4+2])) ||
(recv_buf[i4+1] != recv_buf[i4+3]) )
{
square = 0;
}
}
i4 = (num_procs-1)*4;
row_partitioning[num_procs] = recv_buf[i4+1]+1;
if ((recv_buf[i4] != recv_buf[i4+2]) || (recv_buf[i4+1] != recv_buf[i4+3]))
square = 0;
if (square)
col_partitioning = row_partitioning;
else
{
col_partitioning = hypre_CTAlloc(HYPRE_Int,num_procs+1);
col_partitioning[0] = recv_buf[2];
for (i=0; i < num_procs-1; i++)
{
i4 = 4*i;
if (recv_buf[i4+3] != recv_buf[i4+6]-1)
{
hypre_error(HYPRE_ERROR_GENERIC);
hypre_TFree(ijmatrix);
hypre_TFree(info);
hypre_TFree(recv_buf);
hypre_TFree(row_partitioning);
hypre_TFree(col_partitioning);
return hypre_error_flag;
}
else
col_partitioning[i+1] = recv_buf[i4+6];
}
col_partitioning[num_procs] = recv_buf[num_procs*4-1]+1;
}
hypre_IJMatrixGlobalFirstRow(ijmatrix) = row_partitioning[0];
hypre_IJMatrixGlobalFirstCol(ijmatrix) = col_partitioning[0];
hypre_IJMatrixGlobalNumRows(ijmatrix) = row_partitioning[num_procs] -
row_partitioning[0];
hypre_IJMatrixGlobalNumCols(ijmatrix) = col_partitioning[num_procs] -
col_partitioning[0];
hypre_TFree(info);
hypre_TFree(recv_buf);
#endif
hypre_IJMatrixRowPartitioning(ijmatrix) = row_partitioning;
hypre_IJMatrixColPartitioning(ijmatrix) = col_partitioning;
*matrix = (HYPRE_IJMatrix) ijmatrix;
return hypre_error_flag;
}