HYPRE_Int
hypre_ParCSRBlockMatrixDestroy( hypre_ParCSRBlockMatrix *matrix )
{
if (matrix)
{
if ( hypre_ParCSRBlockMatrixOwnsData(matrix) )
{
hypre_CSRBlockMatrixDestroy(hypre_ParCSRBlockMatrixDiag(matrix));
hypre_CSRBlockMatrixDestroy(hypre_ParCSRBlockMatrixOffd(matrix));
if (hypre_ParCSRBlockMatrixColMapOffd(matrix))
hypre_TFree(hypre_ParCSRBlockMatrixColMapOffd(matrix));
if (hypre_ParCSRBlockMatrixCommPkg(matrix))
hypre_MatvecCommPkgDestroy(hypre_ParCSRBlockMatrixCommPkg(matrix));
if (hypre_ParCSRBlockMatrixCommPkgT(matrix))
hypre_MatvecCommPkgDestroy(hypre_ParCSRBlockMatrixCommPkgT(matrix));
}
if ( hypre_ParCSRBlockMatrixOwnsRowStarts(matrix) )
hypre_TFree(hypre_ParCSRBlockMatrixRowStarts(matrix));
if ( hypre_ParCSRBlockMatrixOwnsColStarts(matrix) )
hypre_TFree(hypre_ParCSRBlockMatrixColStarts(matrix));
if (hypre_ParCSRBlockMatrixAssumedPartition(matrix))
hypre_ParCSRBlockMatrixDestroyAssumedPartition(matrix);
hypre_TFree(matrix);
}
return hypre_error_flag;
}
HYPRE_Int hypre_ParCSRBooleanMatrixDestroy( hypre_ParCSRBooleanMatrix *matrix )
{
HYPRE_Int ierr=0;
if (matrix)
{
if ( hypre_ParCSRBooleanMatrix_Get_OwnsData(matrix) )
{
hypre_CSRBooleanMatrixDestroy(hypre_ParCSRBooleanMatrix_Get_Diag(matrix));
hypre_CSRBooleanMatrixDestroy(hypre_ParCSRBooleanMatrix_Get_Offd(matrix));
if (hypre_ParCSRBooleanMatrix_Get_ColMapOffd(matrix))
hypre_TFree(hypre_ParCSRBooleanMatrix_Get_ColMapOffd(matrix));
if (hypre_ParCSRBooleanMatrix_Get_CommPkg(matrix))
hypre_MatvecCommPkgDestroy(hypre_ParCSRBooleanMatrix_Get_CommPkg(matrix));
}
if ( hypre_ParCSRBooleanMatrix_Get_OwnsRowStarts(matrix) )
hypre_TFree(hypre_ParCSRBooleanMatrix_Get_RowStarts(matrix));
if ( hypre_ParCSRBooleanMatrix_Get_OwnsColStarts(matrix) )
hypre_TFree(hypre_ParCSRBooleanMatrix_Get_ColStarts(matrix));
hypre_TFree(hypre_ParCSRBooleanMatrix_Get_Rowindices(matrix));
hypre_TFree(matrix);
}
return ierr;
}
HYPRE_Int
main( HYPRE_Int argc,
char *argv[] )
{
HYPRE_Int num_procs, myid;
HYPRE_Int verbose = 0, build_matrix_type = 1;
HYPRE_Int index, matrix_arg_index, commpkg_flag=3;
HYPRE_Int i, k, ierr=0;
HYPRE_Int row_start, row_end;
HYPRE_Int col_start, col_end, global_num_rows;
HYPRE_Int *row_part, *col_part;
char *csrfilename;
HYPRE_Int preload = 0, loop = 0, loop2 = LOOP2;
HYPRE_Int bcast_rows[2], *info;
hypre_ParCSRMatrix *parcsr_A, *small_A;
HYPRE_ParCSRMatrix A_temp, A_temp_small;
hypre_CSRMatrix *A_CSR;
hypre_ParCSRCommPkg *comm_pkg;
HYPRE_Int nx, ny, nz;
HYPRE_Int P, Q, R;
HYPRE_Int p, q, r;
HYPRE_Real values[4];
hypre_ParVector *x_new;
hypre_ParVector *y_new, *y;
HYPRE_Int *row_starts;
HYPRE_Real ans;
HYPRE_Real start_time, end_time, total_time, *loop_times;
HYPRE_Real T_avg, T_std;
HYPRE_Int noparmprint = 0;
#if mydebug
HYPRE_Int j, tmp_int;
#endif
/*-----------------------------------------------------------
* 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, &myid );
/*-----------------------------------------------------------
* default - is 27pt laplace
*-----------------------------------------------------------*/
build_matrix_type = 2;
matrix_arg_index = argc;
/*-----------------------------------------------------------
* Parse command line
*-----------------------------------------------------------*/
index = 1;
while ( index < argc)
{
if ( strcmp(argv[index], "-verbose") == 0 )
{
index++;
verbose = 1;
}
else if ( strcmp(argv[index], "-fromonecsrfile") == 0 )
{
index++;
build_matrix_type = 1;
matrix_arg_index = index; /*this tells where the name is*/
}
else if ( strcmp(argv[index], "-commpkg") == 0 )
{
index++;
commpkg_flag = atoi(argv[index++]);
}
else if ( strcmp(argv[index], "-laplacian") == 0 )
{
index++;
build_matrix_type = 2;
matrix_arg_index = index;
}
else if ( strcmp(argv[index], "-27pt") == 0 )
{
index++;
build_matrix_type = 4;
matrix_arg_index = index;
}
/*
else if ( strcmp(argv[index], "-nopreload") == 0 )
{
index++;
preload = 0;
}
*/
else if ( strcmp(argv[index], "-loop") == 0 )
{
index++;
loop = atoi(argv[index++]);
}
else if ( strcmp(argv[index], "-noparmprint") == 0 )
{
index++;
noparmprint = 1;
}
else
{
index++;
/*hypre_printf("Warning: Unrecogized option '%s'\n",argv[index++] );*/
}
}
/*-----------------------------------------------------------
* Setup the Matrix problem
*-----------------------------------------------------------*/
/*-----------------------------------------------------------
* Get actual partitioning-
* read in an actual csr matrix.
*-----------------------------------------------------------*/
if (build_matrix_type ==1) /*read in a csr matrix from one file */
{
if (matrix_arg_index < argc)
{
csrfilename = argv[matrix_arg_index];
}
else
{
hypre_printf("Error: No filename specified \n");
exit(1);
}
if (myid == 0)
{
/*hypre_printf(" FromFile: %s\n", csrfilename);*/
A_CSR = hypre_CSRMatrixRead(csrfilename);
}
row_part = NULL;
col_part = NULL;
parcsr_A = hypre_CSRMatrixToParCSRMatrix(hypre_MPI_COMM_WORLD, A_CSR,
row_part, col_part);
if (myid == 0) hypre_CSRMatrixDestroy(A_CSR);
}
else if (build_matrix_type ==2)
{
myBuildParLaplacian(argc, argv, matrix_arg_index, &A_temp, !noparmprint);
parcsr_A = (hypre_ParCSRMatrix *) A_temp;
}
else if (build_matrix_type ==4)
{
myBuildParLaplacian27pt(argc, argv, matrix_arg_index, &A_temp, !noparmprint);
parcsr_A = (hypre_ParCSRMatrix *) A_temp;
}
/*-----------------------------------------------------------
* create a small problem so that timings are more accurate -
* code gets run twice (small laplace)
*-----------------------------------------------------------*/
/*this is no longer being used - preload = 0 is set at the beginning */
if (preload == 1)
{
/*hypre_printf("preload!\n");*/
values[1] = -1;
values[2] = -1;
values[3] = -1;
values[0] = - 6.0 ;
nx = 2;
ny = num_procs;
nz = 2;
P = 1;
Q = num_procs;
R = 1;
p = myid % P;
q = (( myid - p)/P) % Q;
r = ( myid - p - P*q)/( P*Q );
A_temp_small = (HYPRE_ParCSRMatrix) GenerateLaplacian(hypre_MPI_COMM_WORLD, nx, ny, nz,
P, Q, R, p, q, r, values);
small_A = (hypre_ParCSRMatrix *) A_temp_small;
/*do comm packages*/
hypre_NewCommPkgCreate(small_A);
hypre_NewCommPkgDestroy(small_A);
hypre_MatvecCommPkgCreate(small_A);
hypre_ParCSRMatrixDestroy(small_A);
}
/*-----------------------------------------------------------
* Prepare for timing
*-----------------------------------------------------------*/
/* instead of preloading, let's not time the first one if more than one*/
if (!loop)
{
loop = 1;
/* and don't do any timings */
}
else
{
loop +=1;
if (loop < 2) loop = 2;
}
loop_times = hypre_CTAlloc(HYPRE_Real, loop);
/******************************************************************************************/
hypre_MPI_Barrier(hypre_MPI_COMM_WORLD);
if (commpkg_flag == 1 || commpkg_flag ==3 )
{
/*-----------------------------------------------------------
* Create new comm package
*-----------------------------------------------------------*/
if (!myid) hypre_printf("********************************************************\n" );
/*do loop times*/
for (i=0; i< loop; i++)
{
loop_times[i] = 0.0;
for (k=0; k< loop2; k++)
{
hypre_MPI_Barrier(hypre_MPI_COMM_WORLD);
start_time = hypre_MPI_Wtime();
#if mpip_on
if (i==(loop-1)) hypre_MPI_Pcontrol(1);
#endif
hypre_NewCommPkgCreate(parcsr_A);
#if mpip_on
if (i==(loop-1)) hypre_MPI_Pcontrol(0);
#endif
end_time = hypre_MPI_Wtime();
end_time = end_time - start_time;
hypre_MPI_Allreduce(&end_time, &total_time, 1,
HYPRE_MPI_REAL, hypre_MPI_MAX, hypre_MPI_COMM_WORLD);
loop_times[i] += total_time;
if ( !((i+1)== loop && (k+1) == loop2)) hypre_NewCommPkgDestroy(parcsr_A);
}/*end of loop2 */
} /*end of loop*/
/* calculate the avg and std. */
if (loop > 1)
{
/* calculate the avg and std. */
stats_mo(loop_times, loop, &T_avg, &T_std);
if (!myid) hypre_printf(" NewCommPkgCreate: AVG. wall clock time = %f seconds\n", T_avg);
if (!myid) hypre_printf(" STD. for %d runs = %f\n", loop-1, T_std);
if (!myid) hypre_printf(" (Note: avg./std. timings exclude run 0.)\n");
if (!myid) hypre_printf("********************************************************\n" );
for (i=0; i< loop; i++)
{
if (!myid) hypre_printf(" run %d = %f sec.\n", i, loop_times[i]);
}
if (!myid) hypre_printf("********************************************************\n" );
}
else
{
if (!myid) hypre_printf("********************************************************\n" );
if (!myid) hypre_printf(" NewCommPkgCreate:\n");
if (!myid) hypre_printf(" run time = %f sec.\n", loop_times[0]);
if (!myid) hypre_printf("********************************************************\n" );
}
/*-----------------------------------------------------------
* Verbose printing
*-----------------------------------------------------------*/
/*some verification*/
global_num_rows = hypre_ParCSRMatrixGlobalNumRows(parcsr_A);
if (verbose)
{
ierr = hypre_ParCSRMatrixGetLocalRange( parcsr_A,
&row_start, &row_end ,
&col_start, &col_end );
comm_pkg = hypre_ParCSRMatrixCommPkg(parcsr_A);
hypre_printf("myid = %i, my ACTUAL local range: [%i, %i]\n", myid,
row_start, row_end);
ierr = hypre_GetAssumedPartitionRowRange( myid, global_num_rows, &row_start,
&row_end);
hypre_printf("myid = %i, my assumed local range: [%i, %i]\n", myid,
row_start, row_end);
hypre_printf("myid = %d, num_recvs = %d\n", myid,
hypre_ParCSRCommPkgNumRecvs(comm_pkg) );
#if mydebug
for (i=0; i < hypre_ParCSRCommPkgNumRecvs(comm_pkg); i++)
{
hypre_printf("myid = %d, recv proc = %d, vec_starts = [%d : %d]\n",
myid, hypre_ParCSRCommPkgRecvProcs(comm_pkg)[i],
hypre_ParCSRCommPkgRecvVecStarts(comm_pkg)[i],
hypre_ParCSRCommPkgRecvVecStarts(comm_pkg)[i+1]-1);
}
#endif
hypre_printf("myid = %d, num_sends = %d\n", myid,
hypre_ParCSRCommPkgNumSends(comm_pkg) );
#if mydebug
for (i=0; i <hypre_ParCSRCommPkgNumSends(comm_pkg) ; i++)
{
tmp_int = hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i+1] -
hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i];
index = hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i];
for (j=0; j< tmp_int; j++)
{
hypre_printf("myid = %d, send proc = %d, send element = %d\n",myid,
hypre_ParCSRCommPkgSendProcs(comm_pkg)[i],
hypre_ParCSRCommPkgSendMapElmts(comm_pkg)[index+j]);
}
}
#endif
}
/*-----------------------------------------------------------
* To verify correctness (if commpkg_flag = 3)
*-----------------------------------------------------------*/
if (commpkg_flag == 3 )
{
/*do a matvec - we are assuming a square matrix */
row_starts = hypre_ParCSRMatrixRowStarts(parcsr_A);
x_new = hypre_ParVectorCreate(hypre_MPI_COMM_WORLD, global_num_rows, row_starts);
hypre_ParVectorSetPartitioningOwner(x_new, 0);
hypre_ParVectorInitialize(x_new);
hypre_ParVectorSetRandomValues(x_new, 1);
y_new = hypre_ParVectorCreate(hypre_MPI_COMM_WORLD, global_num_rows, row_starts);
hypre_ParVectorSetPartitioningOwner(y_new, 0);
hypre_ParVectorInitialize(y_new);
hypre_ParVectorSetConstantValues(y_new, 0.0);
/*y = 1.0*A*x+1.0*y */
hypre_ParCSRMatrixMatvec (1.0, parcsr_A, x_new, 1.0, y_new);
}
/*-----------------------------------------------------------
* Clean up after MyComm
*-----------------------------------------------------------*/
hypre_NewCommPkgDestroy(parcsr_A);
}
/******************************************************************************************/
/******************************************************************************************/
hypre_MPI_Barrier(hypre_MPI_COMM_WORLD);
if (commpkg_flag > 1 )
{
/*-----------------------------------------------------------
* Set up standard comm package
*-----------------------------------------------------------*/
bcast_rows[0] = 23;
bcast_rows[1] = 1789;
if (!myid) hypre_printf("********************************************************\n" );
/*do loop times*/
for (i=0; i< loop; i++)
{
loop_times[i] = 0.0;
for (k=0; k< loop2; k++)
{
hypre_MPI_Barrier(hypre_MPI_COMM_WORLD);
start_time = hypre_MPI_Wtime();
#if time_gather
info = hypre_CTAlloc(HYPRE_Int, num_procs);
hypre_MPI_Allgather(bcast_rows, 1, HYPRE_MPI_INT, info, 1, HYPRE_MPI_INT, hypre_MPI_COMM_WORLD);
#endif
hypre_MatvecCommPkgCreate(parcsr_A);
end_time = hypre_MPI_Wtime();
end_time = end_time - start_time;
hypre_MPI_Allreduce(&end_time, &total_time, 1,
HYPRE_MPI_REAL, hypre_MPI_MAX, hypre_MPI_COMM_WORLD);
loop_times[i] += total_time;
if ( !((i+1)== loop && (k+1) == loop2)) hypre_MatvecCommPkgDestroy(hypre_ParCSRMatrixCommPkg(parcsr_A));
}/* end of loop 2*/
} /*end of loop*/
/* calculate the avg and std. */
if (loop > 1)
{
stats_mo(loop_times, loop, &T_avg, &T_std);
if (!myid) hypre_printf("Current CommPkgCreate: AVG. wall clock time = %f seconds\n", T_avg);
if (!myid) hypre_printf(" STD. for %d runs = %f\n", loop-1, T_std);
if (!myid) hypre_printf(" (Note: avg./std. timings exclude run 0.)\n");
if (!myid) hypre_printf("********************************************************\n" );
for (i=0; i< loop; i++)
{
if (!myid) hypre_printf(" run %d = %f sec.\n", i, loop_times[i]);
}
if (!myid) hypre_printf("********************************************************\n" );
}
else
{
if (!myid) hypre_printf("********************************************************\n" );
if (!myid) hypre_printf(" Current CommPkgCreate:\n");
if (!myid) hypre_printf(" run time = %f sec.\n", loop_times[0]);
if (!myid) hypre_printf("********************************************************\n" );
}
/*-----------------------------------------------------------
* Verbose printing
*-----------------------------------------------------------*/
/*some verification*/
if (verbose)
{
ierr = hypre_ParCSRMatrixGetLocalRange( parcsr_A,
&row_start, &row_end ,
&col_start, &col_end );
comm_pkg = hypre_ParCSRMatrixCommPkg(parcsr_A);
hypre_printf("myid = %i, std - my local range: [%i, %i]\n", myid,
row_start, row_end);
ierr = hypre_ParCSRMatrixGetLocalRange( parcsr_A,
&row_start, &row_end ,
&col_start, &col_end );
hypre_printf("myid = %d, std - num_recvs = %d\n", myid,
hypre_ParCSRCommPkgNumRecvs(comm_pkg) );
#if mydebug
for (i=0; i < hypre_ParCSRCommPkgNumRecvs(comm_pkg); i++)
{
hypre_printf("myid = %d, std - recv proc = %d, vec_starts = [%d : %d]\n",
myid, hypre_ParCSRCommPkgRecvProcs(comm_pkg)[i],
hypre_ParCSRCommPkgRecvVecStarts(comm_pkg)[i],
hypre_ParCSRCommPkgRecvVecStarts(comm_pkg)[i+1]-1);
}
#endif
hypre_printf("myid = %d, std - num_sends = %d\n", myid,
hypre_ParCSRCommPkgNumSends(comm_pkg));
#if mydebug
for (i=0; i <hypre_ParCSRCommPkgNumSends(comm_pkg) ; i++)
{
tmp_int = hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i+1] -
hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i];
index = hypre_ParCSRCommPkgSendMapStarts(comm_pkg)[i];
for (j=0; j< tmp_int; j++)
{
hypre_printf("myid = %d, std - send proc = %d, send element = %d\n",myid,
hypre_ParCSRCommPkgSendProcs(comm_pkg)[i],
hypre_ParCSRCommPkgSendMapElmts(comm_pkg)[index+j]);
}
}
#endif
}
/*-----------------------------------------------------------
* Verify correctness
*-----------------------------------------------------------*/
if (commpkg_flag == 3 )
{
global_num_rows = hypre_ParCSRMatrixGlobalNumRows(parcsr_A);
row_starts = hypre_ParCSRMatrixRowStarts(parcsr_A);
y = hypre_ParVectorCreate(hypre_MPI_COMM_WORLD, global_num_rows,row_starts);
hypre_ParVectorSetPartitioningOwner(y, 0);
hypre_ParVectorInitialize(y);
hypre_ParVectorSetConstantValues(y, 0.0);
hypre_ParCSRMatrixMatvec (1.0, parcsr_A, x_new, 1.0, y);
}
}
/*-----------------------------------------------------------
* Compare matvecs for both comm packages (3)
*-----------------------------------------------------------*/
if (commpkg_flag == 3 )
{
/*make sure that y and y_new are the same - now y_new should=0*/
hypre_ParVectorAxpy( -1.0, y, y_new );
hypre_ParVectorSetRandomValues(y, 1);
ans = hypre_ParVectorInnerProd( y, y_new );
if (!myid)
{
if ( fabs(ans) > 1e-8 )
{
hypre_printf("!!!!! WARNING !!!!! should be zero if correct = %6.10f\n",
ans);
}
else
{
hypre_printf("Matvecs match ( should be zero = %6.10f )\n",
ans);
}
}
}
/*-----------------------------------------------------------
* Clean up
*-----------------------------------------------------------*/
hypre_ParCSRMatrixDestroy(parcsr_A); /*this calls the standard comm
package destroy - but we'll destroy
ours separately until it is
incorporated */
if (commpkg_flag == 3 )
{
hypre_ParVectorDestroy(x_new);
hypre_ParVectorDestroy(y);
hypre_ParVectorDestroy(y_new);
}
hypre_MPI_Finalize();
return(ierr);
}
/******************************************************************************
* hypre_BoomerAMGFitInterpVectors
*
This routine for updating the interp operator to interpolate the
supplied smooth vectors with a L.S. fitting. This code (varient 0)
was used for the Baker, Kolev and Yang elasticity paper in section 3
to evaluate the least squares fitting methed proposed by Stuben in
his talk (see paper for details). So this code is basically a
post-processing step that performs the LS fit (the size and sparsity
of P do not change).
Note: truncation only works correctly for 1 processor - needs to
just use the other truncation rouitne
Variant = 0: do L.S. fit to existing interp weights (default)
Variant = 1: extends the neighborhood to incl. other unknowns on the
same node - ASSUMES A NODAL COARSENING, ASSUMES VARIABLES ORDERED
GRID POINT, THEN UNKNOWN (e.g., u0, v0, u1, v1, etc. ), AND AT MOST
3 FCNS (NOTE: **only** works with 1 processor)
This code is not compiled or accessible through hypre at this time
(it was not particularly effective - compared to the LN and GM
approaches), but is checked-in in case there is interest in the
future.
******************************************************************************/
HYPRE_Int hypre_BoomerAMGFitInterpVectors( hypre_ParCSRMatrix *A,
hypre_ParCSRMatrix **P,
HYPRE_Int num_smooth_vecs,
hypre_ParVector **smooth_vecs,
hypre_ParVector **coarse_smooth_vecs,
double delta,
HYPRE_Int num_functions,
HYPRE_Int *dof_func,
HYPRE_Int *CF_marker,
HYPRE_Int max_elmts,
double trunc_factor,
HYPRE_Int variant, HYPRE_Int level)
{
HYPRE_Int i,j, k;
HYPRE_Int one_i = 1;
HYPRE_Int info;
HYPRE_Int coarse_index;;
HYPRE_Int num_coarse_diag;
HYPRE_Int num_coarse_offd;
HYPRE_Int num_nonzeros = 0;
HYPRE_Int coarse_point = 0;
HYPRE_Int k_size;
HYPRE_Int k_alloc;
HYPRE_Int counter;
HYPRE_Int *piv;
HYPRE_Int tmp_int;
HYPRE_Int num_sends;
double *alpha;
double *Beta;
double *w;
double *w_old;
double *B_s;
double tmp_double;
double one = 1.0;
double mone = -1.0;;
double *vec_data;
hypre_CSRMatrix *P_diag = hypre_ParCSRMatrixDiag(*P);
hypre_CSRMatrix *P_offd = hypre_ParCSRMatrixOffd(*P);
double *P_diag_data = hypre_CSRMatrixData(P_diag);
HYPRE_Int *P_diag_i = hypre_CSRMatrixI(P_diag);
HYPRE_Int *P_diag_j = hypre_CSRMatrixJ(P_diag);
double *P_offd_data = hypre_CSRMatrixData(P_offd);
HYPRE_Int *P_offd_i = hypre_CSRMatrixI(P_offd);
HYPRE_Int *P_offd_j = hypre_CSRMatrixJ(P_offd);
HYPRE_Int num_rows_P = hypre_CSRMatrixNumRows(P_diag);
HYPRE_Int P_diag_size = P_diag_i[num_rows_P];
HYPRE_Int P_offd_size = P_offd_i[num_rows_P];
HYPRE_Int num_cols_P_offd = hypre_CSRMatrixNumCols(P_offd);
HYPRE_Int *col_map_offd_P;
hypre_CSRMatrix *A_offd = hypre_ParCSRMatrixOffd(A);
HYPRE_Int num_cols_A_offd = hypre_CSRMatrixNumCols(A_offd);
hypre_ParCSRCommPkg *comm_pkg = hypre_ParCSRMatrixCommPkg(*P);
hypre_ParCSRCommHandle *comm_handle;
MPI_Comm comm;
double *dbl_buf_data;
double *smooth_vec_offd = NULL;
double *offd_vec_data;
HYPRE_Int index, start;
HYPRE_Int *P_marker;
HYPRE_Int num_procs;
hypre_ParVector *vector;
HYPRE_Int new_nnz, orig_start, j_pos, fcn_num, num_elements;
HYPRE_Int *P_diag_j_new;
double *P_diag_data_new;
HYPRE_Int adjust_3D[] = {1, 2, -1, 1, -2, -1};
HYPRE_Int adjust_2D[] = {1, -1};
HYPRE_Int *adjust_list;
if (variant ==1 && num_functions > 1)
{
/* First add new entries to P with value 0.0 corresponding to weights from
other unknowns on the same grid point */
/* Loop through each row */
new_nnz = P_diag_size*num_functions; /* this is an over-estimate */
P_diag_j_new = hypre_CTAlloc(HYPRE_Int, new_nnz);
P_diag_data_new = hypre_CTAlloc (double, new_nnz);
if (num_functions ==2)
adjust_list = adjust_2D;
else if (num_functions ==3)
adjust_list = adjust_3D;
j_pos = 0;
orig_start = 0;
/* loop through rows */
for (i=0; i < num_rows_P; i++)
{
fcn_num = (HYPRE_Int) fmod(i, num_functions);
if (fcn_num != dof_func[i])
printf("WARNING - ROWS incorrectly ordered!\n");
/* loop through elements */
num_elements = P_diag_i[i+1] - orig_start;
/* add zeros corrresponding to other unknowns */
if (num_elements > 1)
{
for (j=0; j < num_elements; j++)
{
P_diag_j_new[j_pos] = P_diag_j[orig_start+j];
P_diag_data_new[j_pos++] = P_diag_data[orig_start+j];
for (k=0; k < num_functions-1; k++)
{
P_diag_j_new[j_pos] = P_diag_j[orig_start+j]+ ADJUST(fcn_num,k);
P_diag_data_new[j_pos++] = 0.0;
}
}
}
else if (num_elements == 1)/* only one element - just copy to new */
{
P_diag_j_new[j_pos] = P_diag_j[orig_start];
P_diag_data_new[j_pos++] = P_diag_data[orig_start];
}
orig_start = P_diag_i[i+1];
if (num_elements > 1)
P_diag_i[i+1] = P_diag_i[i] + num_elements*num_functions;
else
P_diag_i[i+1] = P_diag_i[i] + num_elements;
if (j_pos != P_diag_i[i+1]) printf("Problem!\n");
}/* end loop through rows */
/* modify P */
hypre_TFree(P_diag_j);
hypre_TFree(P_diag_data);
hypre_CSRMatrixJ(P_diag) = P_diag_j_new;
hypre_CSRMatrixData(P_diag) = P_diag_data_new;
hypre_CSRMatrixNumNonzeros(P_diag) = P_diag_i[num_rows_P];
P_diag_j = P_diag_j_new;
P_diag_data = P_diag_data_new;
/* check if there is already a comm pkg - if so, destroy*/
if (comm_pkg)
{
hypre_MatvecCommPkgDestroy(comm_pkg );
comm_pkg = NULL;
}
} /* end variant == 1 and num functions > 0 */
