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gen_fffc.c
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gen_fffc.c
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/******************************************************************************
* Copyright 1998-2019 Lawrence Livermore National Security, LLC and other
* HYPRE Project Developers. See the top-level COPYRIGHT file for details.
*
* SPDX-License-Identifier: (Apache-2.0 OR MIT)
******************************************************************************/
#include "_hypre_utilities.h"
#include "hypre_hopscotch_hash.h"
#include "_hypre_parcsr_mv.h"
#include "_hypre_lapack.h"
#include "_hypre_blas.h"
/* -----------------------------------------------------------------------------
* generate AFF or AFC
* ----------------------------------------------------------------------------- */
HYPRE_Int
hypre_ParCSRMatrixGenerateFFFC( hypre_ParCSRMatrix *A,
HYPRE_Int *CF_marker,
HYPRE_BigInt *cpts_starts,
hypre_ParCSRMatrix *S,
hypre_ParCSRMatrix **A_FC_ptr,
hypre_ParCSRMatrix **A_FF_ptr)
{
MPI_Comm comm = hypre_ParCSRMatrixComm(A);
HYPRE_MemoryLocation memory_location_P = hypre_ParCSRMatrixMemoryLocation(A);
hypre_ParCSRCommPkg *comm_pkg = hypre_ParCSRMatrixCommPkg(A);
hypre_ParCSRCommHandle *comm_handle;
/* diag part of A */
hypre_CSRMatrix *A_diag = hypre_ParCSRMatrixDiag(A);
HYPRE_Complex *A_diag_data = hypre_CSRMatrixData(A_diag);
HYPRE_Int *A_diag_i = hypre_CSRMatrixI(A_diag);
HYPRE_Int *A_diag_j = hypre_CSRMatrixJ(A_diag);
/* off-diag part of A */
hypre_CSRMatrix *A_offd = hypre_ParCSRMatrixOffd(A);
HYPRE_Complex *A_offd_data = hypre_CSRMatrixData(A_offd);
HYPRE_Int *A_offd_i = hypre_CSRMatrixI(A_offd);
HYPRE_Int *A_offd_j = hypre_CSRMatrixJ(A_offd);
HYPRE_Int n_fine = hypre_CSRMatrixNumRows(A_diag);
HYPRE_Int num_cols_A_offd = hypre_CSRMatrixNumCols(A_offd);
/* diag part of S */
hypre_CSRMatrix *S_diag = hypre_ParCSRMatrixDiag(S);
HYPRE_Int *S_diag_i = hypre_CSRMatrixI(S_diag);
HYPRE_Int *S_diag_j = hypre_CSRMatrixJ(S_diag);
/* off-diag part of S */
hypre_CSRMatrix *S_offd = hypre_ParCSRMatrixOffd(S);
HYPRE_Int *S_offd_i = hypre_CSRMatrixI(S_offd);
HYPRE_Int *S_offd_j = hypre_CSRMatrixJ(S_offd);
hypre_ParCSRMatrix *A_FC;
hypre_CSRMatrix *A_FC_diag, *A_FC_offd;
HYPRE_Int *A_FC_diag_i, *A_FC_diag_j, *A_FC_offd_i, *A_FC_offd_j=NULL;
HYPRE_Complex *A_FC_diag_data, *A_FC_offd_data=NULL;
HYPRE_Int num_cols_offd_A_FC;
HYPRE_BigInt *col_map_offd_A_FC = NULL;
hypre_ParCSRMatrix *A_FF;
hypre_CSRMatrix *A_FF_diag, *A_FF_offd;
HYPRE_Int *A_FF_diag_i, *A_FF_diag_j, *A_FF_offd_i, *A_FF_offd_j;
HYPRE_Complex *A_FF_diag_data, *A_FF_offd_data;
HYPRE_Int num_cols_offd_A_FF;
HYPRE_BigInt *col_map_offd_A_FF = NULL;
HYPRE_Int *fine_to_coarse;
HYPRE_Int *fine_to_fine;
HYPRE_Int *fine_to_coarse_offd = NULL;
HYPRE_Int *fine_to_fine_offd = NULL;
HYPRE_Int i, j, jj;
HYPRE_Int startc, index;
HYPRE_Int cpt, fpt, row;
HYPRE_Int *CF_marker_offd = NULL, *marker_offd=NULL;
HYPRE_Int *int_buf_data = NULL;
HYPRE_BigInt *big_convert;
HYPRE_BigInt *big_convert_offd = NULL;
HYPRE_BigInt *big_buf_data = NULL;
HYPRE_BigInt total_global_fpts, total_global_cpts, *fpts_starts;
HYPRE_Int my_id, num_procs, num_sends;
HYPRE_Int d_count_FF, d_count_FC, o_count_FF, o_count_FC;
HYPRE_Int n_Fpts;
HYPRE_Int *cpt_array, *fpt_array;
HYPRE_Int start, stop;
HYPRE_Int num_threads;
num_threads = hypre_NumThreads();
/* MPI size and rank*/
hypre_MPI_Comm_size(comm, &num_procs);
hypre_MPI_Comm_rank(comm, &my_id);
fine_to_coarse = hypre_CTAlloc(HYPRE_Int, n_fine, HYPRE_MEMORY_HOST);
fine_to_fine = hypre_CTAlloc(HYPRE_Int, n_fine, HYPRE_MEMORY_HOST);
big_convert = hypre_CTAlloc(HYPRE_BigInt, n_fine, HYPRE_MEMORY_HOST);
cpt_array = hypre_CTAlloc(HYPRE_Int, num_threads+1, HYPRE_MEMORY_HOST);
fpt_array = hypre_CTAlloc(HYPRE_Int, num_threads+1, HYPRE_MEMORY_HOST);
#ifdef HYPRE_USING_OPENMP
#pragma omp parallel private(i,j,jj,start,stop,row,cpt,fpt,d_count_FC,d_count_FF,o_count_FC,o_count_FF)
#endif
{
HYPRE_Int my_thread_num = hypre_GetThreadNum();
start = (n_fine/num_threads)*my_thread_num;
if (my_thread_num == num_threads-1)
{
stop = n_fine;
}
else
{
stop = (n_fine/num_threads)*(my_thread_num+1);
}
for (i=start; i < stop; i++)
{
if (CF_marker[i] > 0)
{
cpt_array[my_thread_num+1]++;
}
else
{
fpt_array[my_thread_num+1]++;
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
if (my_thread_num == 0)
{
for (i=1; i < num_threads; i++)
{
cpt_array[i+1] += cpt_array[i];
fpt_array[i+1] += fpt_array[i];
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
cpt = cpt_array[my_thread_num];
fpt = fpt_array[my_thread_num];
for (i=start; i < stop; i++)
{
if (CF_marker[i] > 0)
{
fine_to_coarse[i] = cpt++;
fine_to_fine[i] = -1;
}
else
{
fine_to_fine[i] = fpt++;
fine_to_coarse[i] = -1;
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
if (my_thread_num == 0)
{
HYPRE_BigInt big_Fpts;
n_Fpts = fpt_array[num_threads];
big_Fpts = n_Fpts;
#ifdef HYPRE_NO_GLOBAL_PARTITION
fpts_starts = hypre_CTAlloc(HYPRE_BigInt, 2, HYPRE_MEMORY_HOST);
hypre_MPI_Scan(&big_Fpts, fpts_starts+1, 1, HYPRE_MPI_BIG_INT, hypre_MPI_SUM, comm);
fpts_starts[0] = fpts_starts[1] - big_Fpts;
if (my_id == num_procs - 1)
{
total_global_fpts = fpts_starts[1];
total_global_cpts = cpts_starts[1];
}
hypre_MPI_Bcast(&total_global_fpts, 1, HYPRE_MPI_BIG_INT, num_procs-1, comm);
hypre_MPI_Bcast(&total_global_cpts, 1, HYPRE_MPI_BIG_INT, num_procs-1, comm);
#else
fpts_starts = hypre_CTAlloc(HYPRE_BigInt, num_procs+1, HYPRE_MEMORY_HOST);
hypre_MPI_Allgather(&big_Fpts, 1, HYPRE_MPI_BIG_INT, &fpts_starts[1], 1, HYPRE_MPI_BIG_INT, comm);
fpts_starts[0] = 0;
for (i = 2; i < num_procs+1; i++)
{
fpts_starts[i] += fpts_starts[i-1];
}
total_global_fpts = fpts_starts[num_procs];
total_global_cpts = cpts_starts[num_procs];
#endif
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
for (i=start; i < stop; i++)
{
if (CF_marker[i] > 0)
{
#ifdef HYPRE_NO_GLOBAL_PARTITION
big_convert[i] = (HYPRE_BigInt)fine_to_coarse[i] + cpts_starts[0];
#else
big_convert[i] = (HYPRE_BigInt)fine_to_coarse[i] + cpts_starts[my_id];
#endif
}
else
{
#ifdef HYPRE_NO_GLOBAL_PARTITION
big_convert[i] = (HYPRE_BigInt)fine_to_fine[i] + fpts_starts[0];
#else
big_convert[i] = (HYPRE_BigInt)fine_to_fine[i] + fpts_starts[my_id];
#endif
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
if (my_thread_num == 0)
{
if (num_cols_A_offd)
{
CF_marker_offd = hypre_CTAlloc(HYPRE_Int, num_cols_A_offd, HYPRE_MEMORY_HOST);
big_convert_offd = hypre_CTAlloc(HYPRE_BigInt, num_cols_A_offd, HYPRE_MEMORY_HOST);
fine_to_coarse_offd = hypre_CTAlloc(HYPRE_Int, num_cols_A_offd, HYPRE_MEMORY_HOST);
fine_to_fine_offd = hypre_CTAlloc(HYPRE_Int, num_cols_A_offd, HYPRE_MEMORY_HOST);
}
index = 0;
num_sends = hypre_ParCSRCommPkgNumSends(comm_pkg);
int_buf_data = hypre_CTAlloc(HYPRE_Int, hypre_ParCSRCommPkgSendMapStart(comm_pkg, num_sends), HYPRE_MEMORY_HOST);
big_buf_data = hypre_CTAlloc(HYPRE_BigInt, hypre_ParCSRCommPkgSendMapStart(comm_pkg, num_sends), HYPRE_MEMORY_HOST);
for (i = 0; i < num_sends; i++)
{
startc = hypre_ParCSRCommPkgSendMapStart(comm_pkg, i);
for (j = startc; j < hypre_ParCSRCommPkgSendMapStart(comm_pkg, i+1); j++)
{
int_buf_data[index] = CF_marker[hypre_ParCSRCommPkgSendMapElmt(comm_pkg,j)];
big_buf_data[index++] = big_convert[hypre_ParCSRCommPkgSendMapElmt(comm_pkg,j)];
}
}
comm_handle = hypre_ParCSRCommHandleCreate( 11, comm_pkg, int_buf_data, CF_marker_offd);
hypre_ParCSRCommHandleDestroy(comm_handle);
comm_handle = hypre_ParCSRCommHandleCreate( 21, comm_pkg, big_buf_data, big_convert_offd);
hypre_ParCSRCommHandleDestroy(comm_handle);
marker_offd = hypre_CTAlloc(HYPRE_Int, num_cols_A_offd, HYPRE_MEMORY_HOST);
for (i = 0; i < n_fine; i++)
{
if (CF_marker[i] < 0)
{
for (j = S_offd_i[i]; j < S_offd_i[i+1]; j++)
{
marker_offd[S_offd_j[j]] = 1;
}
}
}
num_cols_offd_A_FC = 0;
num_cols_offd_A_FF = 0;
if (num_cols_A_offd)
{
for (i=0; i < num_cols_A_offd; i++)
{
if (CF_marker_offd[i] > 0 && marker_offd[i] > 0)
{
fine_to_coarse_offd[i] = num_cols_offd_A_FC++;
fine_to_fine_offd[i] = -1;
}
else if (CF_marker_offd[i] < 0 && marker_offd[i] > 0)
{
fine_to_fine_offd[i] = num_cols_offd_A_FF++;
fine_to_coarse_offd[i] = -1;
}
}
col_map_offd_A_FF = hypre_TAlloc(HYPRE_BigInt, num_cols_offd_A_FF, HYPRE_MEMORY_HOST);
col_map_offd_A_FC = hypre_TAlloc(HYPRE_BigInt, num_cols_offd_A_FC, HYPRE_MEMORY_HOST);
cpt = 0;
fpt = 0;
for (i=0; i < num_cols_A_offd; i++)
{
if (CF_marker_offd[i] > 0 && marker_offd[i] > 0)
{
col_map_offd_A_FC[cpt++] = big_convert_offd[i];
}
else if (CF_marker_offd[i] < 0 && marker_offd[i] > 0)
{
col_map_offd_A_FF[fpt++] = big_convert_offd[i];
}
}
}
A_FF_diag_i = hypre_CTAlloc(HYPRE_Int,n_Fpts+1, memory_location_P);
A_FC_diag_i = hypre_CTAlloc(HYPRE_Int,n_Fpts+1, memory_location_P);
A_FF_offd_i = hypre_CTAlloc(HYPRE_Int,n_Fpts+1, memory_location_P);
A_FC_offd_i = hypre_CTAlloc(HYPRE_Int,n_Fpts+1, memory_location_P);
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
d_count_FC = 0;
d_count_FF = 0;
o_count_FC = 0;
o_count_FF = 0;
row = fpt_array[my_thread_num];
for (i=start; i < stop; i++)
{
if (CF_marker[i] < 0)
{
row++;
d_count_FF++; /* account for diagonal element */
for (j = S_diag_i[i]; j < S_diag_i[i+1]; j++)
{
jj = S_diag_j[j];
if (CF_marker[jj] > 0)
d_count_FC++;
else
d_count_FF++;
}
A_FF_diag_i[row] = d_count_FF;
A_FC_diag_i[row] = d_count_FC;
for (j = S_offd_i[i]; j < S_offd_i[i+1]; j++)
{
jj = S_offd_j[j];
if (CF_marker_offd[jj] > 0)
o_count_FC++;
else
o_count_FF++;
}
A_FF_offd_i[row] = o_count_FF;
A_FC_offd_i[row] = o_count_FC;
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
if (my_thread_num == 0)
{
HYPRE_Int fpt2;
for (i=1; i<num_threads+1; i++)
{
fpt = fpt_array[i];
fpt2 = fpt_array[i-1];
if (fpt == fpt2)
{
continue;
}
A_FC_diag_i[fpt] += A_FC_diag_i[fpt2];
A_FF_diag_i[fpt] += A_FF_diag_i[fpt2];
A_FC_offd_i[fpt] += A_FC_offd_i[fpt2];
A_FF_offd_i[fpt] += A_FF_offd_i[fpt2];
}
row = fpt_array[num_threads];
d_count_FC = A_FC_diag_i[row];
d_count_FF = A_FF_diag_i[row];
o_count_FC = A_FC_offd_i[row];
o_count_FF = A_FF_offd_i[row];
A_FF_diag_j = hypre_CTAlloc(HYPRE_Int,d_count_FF, memory_location_P);
A_FC_diag_j = hypre_CTAlloc(HYPRE_Int,d_count_FC, memory_location_P);
A_FF_offd_j = hypre_CTAlloc(HYPRE_Int,o_count_FF, memory_location_P);
A_FC_offd_j = hypre_CTAlloc(HYPRE_Int,o_count_FC, memory_location_P);
A_FF_diag_data = hypre_CTAlloc(HYPRE_Real,d_count_FF, memory_location_P);
A_FC_diag_data = hypre_CTAlloc(HYPRE_Real,d_count_FC, memory_location_P);
A_FF_offd_data = hypre_CTAlloc(HYPRE_Real,o_count_FF, memory_location_P);
A_FC_offd_data = hypre_CTAlloc(HYPRE_Real,o_count_FC, memory_location_P);
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
row = fpt_array[my_thread_num];
d_count_FC = A_FC_diag_i[row];
d_count_FF = A_FF_diag_i[row];
o_count_FC = A_FC_offd_i[row];
o_count_FF = A_FF_offd_i[row];
for (i=start; i < stop; i++)
{
if (CF_marker[i] < 0)
{
HYPRE_Int jS, jA;
row++;
jA = A_diag_i[i];
A_FF_diag_j[d_count_FF] = fine_to_fine[A_diag_j[jA]];
A_FF_diag_data[d_count_FF++] = A_diag_data[jA++];
for (j = S_diag_i[i]; j < S_diag_i[i+1]; j++)
{
jA = A_diag_i[i]+1;
jS = S_diag_j[j];
while (A_diag_j[jA] != jS) jA++;
if (CF_marker[S_diag_j[j]] > 0)
{
A_FC_diag_j[d_count_FC] = fine_to_coarse[A_diag_j[jA]];
A_FC_diag_data[d_count_FC++] = A_diag_data[jA++];
}
else
{
A_FF_diag_j[d_count_FF] = fine_to_fine[A_diag_j[jA]];
A_FF_diag_data[d_count_FF++] = A_diag_data[jA++];
}
}
A_FF_diag_i[row] = d_count_FF;
A_FC_diag_i[row] = d_count_FC;
for (j = S_offd_i[i]; j < S_offd_i[i+1]; j++)
{
jA = A_offd_i[i];
jS = S_offd_j[j];
while (jS != A_offd_j[jA]) jA++;
if (CF_marker_offd[S_offd_j[j]] > 0)
{
A_FC_offd_j[o_count_FC] = fine_to_coarse_offd[A_offd_j[jA]];
A_FC_offd_data[o_count_FC++] = A_offd_data[jA++];
}
else
{
A_FF_offd_j[o_count_FF] = fine_to_fine_offd[A_offd_j[jA]];
A_FF_offd_data[o_count_FF++] = A_offd_data[jA++];
}
}
A_FF_offd_i[row] = o_count_FF;
A_FC_offd_i[row] = o_count_FC;
}
}
} /*end parallel region */
A_FC = hypre_ParCSRMatrixCreate(comm,
total_global_fpts,
total_global_cpts,
fpts_starts,
cpts_starts,
num_cols_offd_A_FC,
A_FC_diag_i[n_Fpts],
A_FC_offd_i[n_Fpts]);
A_FF = hypre_ParCSRMatrixCreate(comm,
total_global_fpts,
total_global_fpts,
fpts_starts,
fpts_starts,
num_cols_offd_A_FF,
A_FF_diag_i[n_Fpts],
A_FF_offd_i[n_Fpts]);
A_FC_diag = hypre_ParCSRMatrixDiag(A_FC);
hypre_CSRMatrixData(A_FC_diag) = A_FC_diag_data;
hypre_CSRMatrixI(A_FC_diag) = A_FC_diag_i;
hypre_CSRMatrixJ(A_FC_diag) = A_FC_diag_j;
A_FC_offd = hypre_ParCSRMatrixOffd(A_FC);
hypre_CSRMatrixData(A_FC_offd) = A_FC_offd_data;
hypre_CSRMatrixI(A_FC_offd) = A_FC_offd_i;
hypre_CSRMatrixJ(A_FC_offd) = A_FC_offd_j;
hypre_ParCSRMatrixOwnsRowStarts(A_FC) = 1;
hypre_ParCSRMatrixOwnsColStarts(A_FC) = 0;
hypre_ParCSRMatrixColMapOffd(A_FC) = col_map_offd_A_FC;
hypre_CSRMatrixMemoryLocation(A_FC_diag) = memory_location_P;
hypre_CSRMatrixMemoryLocation(A_FC_offd) = memory_location_P;
A_FF_diag = hypre_ParCSRMatrixDiag(A_FF);
hypre_CSRMatrixData(A_FF_diag) = A_FF_diag_data;
hypre_CSRMatrixI(A_FF_diag) = A_FF_diag_i;
hypre_CSRMatrixJ(A_FF_diag) = A_FF_diag_j;
A_FF_offd = hypre_ParCSRMatrixOffd(A_FF);
hypre_CSRMatrixData(A_FF_offd) = A_FF_offd_data;
hypre_CSRMatrixI(A_FF_offd) = A_FF_offd_i;
hypre_CSRMatrixJ(A_FF_offd) = A_FF_offd_j;
hypre_ParCSRMatrixOwnsRowStarts(A_FF) = 0;
hypre_ParCSRMatrixOwnsColStarts(A_FF) = 0;
hypre_ParCSRMatrixColMapOffd(A_FF) = col_map_offd_A_FF;
hypre_CSRMatrixMemoryLocation(A_FF_diag) = memory_location_P;
hypre_CSRMatrixMemoryLocation(A_FF_offd) = memory_location_P;
hypre_TFree(fine_to_coarse, HYPRE_MEMORY_HOST);
hypre_TFree(fine_to_fine, HYPRE_MEMORY_HOST);
hypre_TFree(big_convert, HYPRE_MEMORY_HOST);
hypre_TFree(fine_to_coarse_offd, HYPRE_MEMORY_HOST);
hypre_TFree(fine_to_fine_offd, HYPRE_MEMORY_HOST);
hypre_TFree(big_convert_offd, HYPRE_MEMORY_HOST);
hypre_TFree(CF_marker_offd, HYPRE_MEMORY_HOST);
hypre_TFree(int_buf_data, HYPRE_MEMORY_HOST);
hypre_TFree(big_buf_data, HYPRE_MEMORY_HOST);
hypre_TFree(marker_offd, HYPRE_MEMORY_HOST);
hypre_TFree(cpt_array, HYPRE_MEMORY_HOST);
hypre_TFree(fpt_array, HYPRE_MEMORY_HOST);
*A_FC_ptr = A_FC;
*A_FF_ptr = A_FF;
return hypre_error_flag;
}
/* -----------------------------------------------------------------------------
* generate AFF, AFC, for 2 stage extended interpolation
* ----------------------------------------------------------------------------- */
HYPRE_Int
hypre_ParCSRMatrixGenerateFFFC3( hypre_ParCSRMatrix *A,
HYPRE_Int *CF_marker,
HYPRE_BigInt *cpts_starts,
hypre_ParCSRMatrix *S,
hypre_ParCSRMatrix **A_FC_ptr,
hypre_ParCSRMatrix **A_FF_ptr)
{
MPI_Comm comm = hypre_ParCSRMatrixComm(A);
HYPRE_MemoryLocation memory_location_P = hypre_ParCSRMatrixMemoryLocation(A);
hypre_ParCSRCommPkg *comm_pkg = hypre_ParCSRMatrixCommPkg(A);
hypre_ParCSRCommHandle *comm_handle;
/* diag part of A */
hypre_CSRMatrix *A_diag = hypre_ParCSRMatrixDiag(A);
HYPRE_Complex *A_diag_data = hypre_CSRMatrixData(A_diag);
HYPRE_Int *A_diag_i = hypre_CSRMatrixI(A_diag);
HYPRE_Int *A_diag_j = hypre_CSRMatrixJ(A_diag);
/* off-diag part of A */
hypre_CSRMatrix *A_offd = hypre_ParCSRMatrixOffd(A);
HYPRE_Complex *A_offd_data = hypre_CSRMatrixData(A_offd);
HYPRE_Int *A_offd_i = hypre_CSRMatrixI(A_offd);
HYPRE_Int *A_offd_j = hypre_CSRMatrixJ(A_offd);
HYPRE_Int n_fine = hypre_CSRMatrixNumRows(A_diag);
HYPRE_Int num_cols_A_offd = hypre_CSRMatrixNumCols(A_offd);
/* diag part of S */
hypre_CSRMatrix *S_diag = hypre_ParCSRMatrixDiag(S);
HYPRE_Int *S_diag_i = hypre_CSRMatrixI(S_diag);
HYPRE_Int *S_diag_j = hypre_CSRMatrixJ(S_diag);
/* off-diag part of S */
hypre_CSRMatrix *S_offd = hypre_ParCSRMatrixOffd(S);
HYPRE_Int *S_offd_i = hypre_CSRMatrixI(S_offd);
HYPRE_Int *S_offd_j = hypre_CSRMatrixJ(S_offd);
hypre_ParCSRMatrix *A_FC;
hypre_CSRMatrix *A_FC_diag, *A_FC_offd;
HYPRE_Int *A_FC_diag_i, *A_FC_diag_j, *A_FC_offd_i, *A_FC_offd_j=NULL;
HYPRE_Complex *A_FC_diag_data, *A_FC_offd_data=NULL;
HYPRE_Int num_cols_offd_A_FC;
HYPRE_BigInt *col_map_offd_A_FC = NULL;
hypre_ParCSRMatrix *A_FF;
hypre_CSRMatrix *A_FF_diag, *A_FF_offd;
HYPRE_Int *A_FF_diag_i, *A_FF_diag_j, *A_FF_offd_i, *A_FF_offd_j;
HYPRE_Complex *A_FF_diag_data, *A_FF_offd_data;
HYPRE_Int num_cols_offd_A_FF;
HYPRE_BigInt *col_map_offd_A_FF = NULL;
HYPRE_Int *fine_to_coarse;
HYPRE_Int *fine_to_fine;
HYPRE_Int *fine_to_coarse_offd = NULL;
HYPRE_Int *fine_to_fine_offd = NULL;
HYPRE_Int i, j, jj;
HYPRE_Int startc, index;
HYPRE_Int cpt, fpt, new_fpt, row, rowc;
HYPRE_Int *CF_marker_offd = NULL;
HYPRE_Int *int_buf_data = NULL;
HYPRE_BigInt *big_convert;
HYPRE_BigInt *big_convert_offd = NULL;
HYPRE_BigInt *big_buf_data = NULL;
HYPRE_BigInt total_global_fpts, total_global_cpts, total_global_new_fpts;
HYPRE_BigInt *fpts_starts, *new_fpts_starts;
HYPRE_Int my_id, num_procs, num_sends;
HYPRE_Int d_count_FF, d_count_FC, o_count_FF, o_count_FC;
HYPRE_Int n_Fpts;
HYPRE_Int n_new_Fpts;
HYPRE_Int *cpt_array, *fpt_array, *new_fpt_array;
HYPRE_Int start, stop;
HYPRE_Int num_threads;
num_threads = hypre_NumThreads();
/* MPI size and rank*/
hypre_MPI_Comm_size(comm, &num_procs);
hypre_MPI_Comm_rank(comm, &my_id);
fine_to_coarse = hypre_CTAlloc(HYPRE_Int, n_fine, HYPRE_MEMORY_HOST);
fine_to_fine = hypre_CTAlloc(HYPRE_Int, n_fine, HYPRE_MEMORY_HOST);
big_convert = hypre_CTAlloc(HYPRE_BigInt, n_fine, HYPRE_MEMORY_HOST);
cpt_array = hypre_CTAlloc(HYPRE_Int, num_threads+1, HYPRE_MEMORY_HOST);
fpt_array = hypre_CTAlloc(HYPRE_Int, num_threads+1, HYPRE_MEMORY_HOST);
new_fpt_array = hypre_CTAlloc(HYPRE_Int, num_threads+1, HYPRE_MEMORY_HOST);
#ifdef HYPRE_USING_OPENMP
#pragma omp parallel private(i,j,jj,start,stop,row,rowc,cpt,new_fpt,fpt,d_count_FC,d_count_FF,o_count_FC,o_count_FF)
#endif
{
HYPRE_Int my_thread_num = hypre_GetThreadNum();
start = (n_fine/num_threads)*my_thread_num;
if (my_thread_num == num_threads-1)
{
stop = n_fine;
}
else
{
stop = (n_fine/num_threads)*(my_thread_num+1);
}
for (i=start; i < stop; i++)
{
if (CF_marker[i] > 0)
{
cpt_array[my_thread_num+1]++;
}
else if (CF_marker[i] == -2)
{
new_fpt_array[my_thread_num+1]++;
fpt_array[my_thread_num+1]++;
}
else
{
fpt_array[my_thread_num+1]++;
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
if (my_thread_num == 0)
{
for (i=1; i < num_threads; i++)
{
cpt_array[i+1] += cpt_array[i];
fpt_array[i+1] += fpt_array[i];
new_fpt_array[i+1] += new_fpt_array[i];
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
cpt = cpt_array[my_thread_num];
fpt = fpt_array[my_thread_num];
for (i=start; i < stop; i++)
{
if (CF_marker[i] > 0)
{
fine_to_coarse[i] = cpt++;
fine_to_fine[i] = -1;
}
else
{
fine_to_fine[i] = fpt++;
fine_to_coarse[i] = -1;
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
if (my_thread_num == 0)
{
HYPRE_BigInt big_Fpts, big_new_Fpts;
n_Fpts = fpt_array[num_threads];
n_new_Fpts = new_fpt_array[num_threads];
big_Fpts = n_Fpts;
big_new_Fpts = n_new_Fpts;
#ifdef HYPRE_NO_GLOBAL_PARTITION
fpts_starts = hypre_CTAlloc(HYPRE_BigInt, 2, HYPRE_MEMORY_HOST);
new_fpts_starts = hypre_CTAlloc(HYPRE_BigInt, 2, HYPRE_MEMORY_HOST);
hypre_MPI_Scan(&big_Fpts, fpts_starts+1, 1, HYPRE_MPI_BIG_INT, hypre_MPI_SUM, comm);
hypre_MPI_Scan(&big_new_Fpts, new_fpts_starts+1, 1, HYPRE_MPI_BIG_INT, hypre_MPI_SUM, comm);
fpts_starts[0] = fpts_starts[1] - big_Fpts;
new_fpts_starts[0] = new_fpts_starts[1] - big_new_Fpts;
if (my_id == num_procs - 1)
{
total_global_new_fpts = new_fpts_starts[1];
total_global_fpts = fpts_starts[1];
total_global_cpts = cpts_starts[1];
}
hypre_MPI_Bcast(&total_global_new_fpts, 1, HYPRE_MPI_BIG_INT, num_procs-1, comm);
hypre_MPI_Bcast(&total_global_fpts, 1, HYPRE_MPI_BIG_INT, num_procs-1, comm);
hypre_MPI_Bcast(&total_global_cpts, 1, HYPRE_MPI_BIG_INT, num_procs-1, comm);
#else
fpts_starts = hypre_CTAlloc(HYPRE_BigInt, num_procs+1, HYPRE_MEMORY_HOST);
new_fpts_starts = hypre_CTAlloc(HYPRE_BigInt, num_procs+1, HYPRE_MEMORY_HOST);
hypre_MPI_Allgather(&big_Fpts, 1, HYPRE_MPI_BIG_INT, &fpts_starts[1], 1, HYPRE_MPI_BIG_INT, comm);
hypre_MPI_Allgather(&big_new_Fpts, 1, HYPRE_MPI_BIG_INT, &new_fpts_starts[1], 1, HYPRE_MPI_BIG_INT, comm);
fpts_starts[0] = 0;
new_fpts_starts[0] = 0;
for (i = 2; i < num_procs+1; i++)
{
fpts_starts[i] += fpts_starts[i-1];
new_fpts_starts[i] += new_fpts_starts[i-1];
}
total_global_new_fpts = new_fpts_starts[num_procs];
total_global_fpts = fpts_starts[num_procs];
total_global_cpts = cpts_starts[num_procs];
#endif
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
for (i=start; i < stop; i++)
{
if (CF_marker[i] > 0)
{
#ifdef HYPRE_NO_GLOBAL_PARTITION
big_convert[i] = (HYPRE_BigInt)fine_to_coarse[i] + cpts_starts[0];
#else
big_convert[i] = (HYPRE_BigInt)fine_to_coarse[i] + cpts_starts[my_id];
#endif
}
else
{
#ifdef HYPRE_NO_GLOBAL_PARTITION
big_convert[i] = (HYPRE_BigInt)fine_to_fine[i] + fpts_starts[0];
#else
big_convert[i] = (HYPRE_BigInt)fine_to_fine[i] + fpts_starts[my_id];
#endif
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
if (my_thread_num == 0)
{
if (num_cols_A_offd)
{
CF_marker_offd = hypre_CTAlloc(HYPRE_Int, num_cols_A_offd, HYPRE_MEMORY_HOST);
big_convert_offd = hypre_CTAlloc(HYPRE_BigInt, num_cols_A_offd, HYPRE_MEMORY_HOST);
fine_to_coarse_offd = hypre_CTAlloc(HYPRE_Int, num_cols_A_offd, HYPRE_MEMORY_HOST);
fine_to_fine_offd = hypre_CTAlloc(HYPRE_Int, num_cols_A_offd, HYPRE_MEMORY_HOST);
}
index = 0;
num_sends = hypre_ParCSRCommPkgNumSends(comm_pkg);
int_buf_data = hypre_CTAlloc(HYPRE_Int, hypre_ParCSRCommPkgSendMapStart(comm_pkg, num_sends), HYPRE_MEMORY_HOST);
big_buf_data = hypre_CTAlloc(HYPRE_BigInt, hypre_ParCSRCommPkgSendMapStart(comm_pkg, num_sends), HYPRE_MEMORY_HOST);
for (i = 0; i < num_sends; i++)
{
startc = hypre_ParCSRCommPkgSendMapStart(comm_pkg, i);
for (j = startc; j < hypre_ParCSRCommPkgSendMapStart(comm_pkg, i+1); j++)
{
int_buf_data[index] = CF_marker[hypre_ParCSRCommPkgSendMapElmt(comm_pkg,j)];
big_buf_data[index++] = big_convert[hypre_ParCSRCommPkgSendMapElmt(comm_pkg,j)];
}
}
comm_handle = hypre_ParCSRCommHandleCreate( 11, comm_pkg, int_buf_data, CF_marker_offd);
hypre_ParCSRCommHandleDestroy(comm_handle);
comm_handle = hypre_ParCSRCommHandleCreate( 21, comm_pkg, big_buf_data, big_convert_offd);
hypre_ParCSRCommHandleDestroy(comm_handle);
num_cols_offd_A_FC = 0;
num_cols_offd_A_FF = 0;
if (num_cols_A_offd)
{
for (i=0; i < num_cols_A_offd; i++)
{
if (CF_marker_offd[i] > 0)
{
fine_to_coarse_offd[i] = num_cols_offd_A_FC++;
fine_to_fine_offd[i] = -1;
}
else
{
fine_to_fine_offd[i] = num_cols_offd_A_FF++;
fine_to_coarse_offd[i] = -1;
}
}
col_map_offd_A_FF = hypre_TAlloc(HYPRE_BigInt, num_cols_offd_A_FF, HYPRE_MEMORY_HOST);
col_map_offd_A_FC = hypre_TAlloc(HYPRE_BigInt, num_cols_offd_A_FC, HYPRE_MEMORY_HOST);
cpt = 0;
fpt = 0;
for (i=0; i < num_cols_A_offd; i++)
{
if (CF_marker_offd[i] > 0)
{
col_map_offd_A_FC[cpt++] = big_convert_offd[i];
}
else
{
col_map_offd_A_FF[fpt++] = big_convert_offd[i];
}
}
}
A_FF_diag_i = hypre_CTAlloc(HYPRE_Int,n_new_Fpts+1, memory_location_P);
A_FC_diag_i = hypre_CTAlloc(HYPRE_Int,n_Fpts+1, memory_location_P);
A_FF_offd_i = hypre_CTAlloc(HYPRE_Int,n_new_Fpts+1, memory_location_P);
A_FC_offd_i = hypre_CTAlloc(HYPRE_Int,n_Fpts+1, memory_location_P);
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
d_count_FC = 0;
d_count_FF = 0;
o_count_FC = 0;
o_count_FF = 0;
row = new_fpt_array[my_thread_num];
rowc = fpt_array[my_thread_num];
for (i=start; i < stop; i++)
{
if (CF_marker[i] == -2)
{
row++;
rowc++;
d_count_FF++; /* account for diagonal element */
for (j = S_diag_i[i]; j < S_diag_i[i+1]; j++)
{
jj = S_diag_j[j];
if (CF_marker[jj] > 0)
d_count_FC++;
else
d_count_FF++;
}
A_FF_diag_i[row] = d_count_FF;
A_FC_diag_i[rowc] = d_count_FC;
for (j = S_offd_i[i]; j < S_offd_i[i+1]; j++)
{
jj = S_offd_j[j];
if (CF_marker_offd[jj] > 0)
o_count_FC++;
else
o_count_FF++;
}
A_FF_offd_i[row] = o_count_FF;
A_FC_offd_i[rowc] = o_count_FC;
}
else if (CF_marker[i] < 0)
{
rowc++;
for (j = S_diag_i[i]; j < S_diag_i[i+1]; j++)
{
jj = S_diag_j[j];
if (CF_marker[jj] > 0)
d_count_FC++;
}
A_FC_diag_i[rowc] = d_count_FC;
for (j = S_offd_i[i]; j < S_offd_i[i+1]; j++)
{
jj = S_offd_j[j];
if (CF_marker_offd[jj] > 0)
o_count_FC++;
}
A_FC_offd_i[rowc] = o_count_FC;
}
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
if (my_thread_num == 0)
{
HYPRE_Int fpt2, new_fpt2;
for (i=1; i<num_threads+1; i++)
{
fpt = fpt_array[i];
new_fpt = new_fpt_array[i];
fpt2 = fpt_array[i-1];
new_fpt2 = new_fpt_array[i-1];
if (new_fpt != new_fpt2)
{
A_FF_diag_i[new_fpt] += A_FF_diag_i[new_fpt2];
A_FF_offd_i[new_fpt] += A_FF_offd_i[new_fpt2];
}
if (fpt != fpt2)
{
A_FC_diag_i[fpt] += A_FC_diag_i[fpt2];
A_FC_offd_i[fpt] += A_FC_offd_i[fpt2];
}
}
row = new_fpt_array[num_threads];
rowc = fpt_array[num_threads];
d_count_FC = A_FC_diag_i[rowc];
d_count_FF = A_FF_diag_i[row];
o_count_FC = A_FC_offd_i[rowc];
o_count_FF = A_FF_offd_i[row];
A_FF_diag_j = hypre_CTAlloc(HYPRE_Int,d_count_FF, memory_location_P);
A_FC_diag_j = hypre_CTAlloc(HYPRE_Int,d_count_FC, memory_location_P);
A_FF_offd_j = hypre_CTAlloc(HYPRE_Int,o_count_FF, memory_location_P);
A_FC_offd_j = hypre_CTAlloc(HYPRE_Int,o_count_FC, memory_location_P);
A_FF_diag_data = hypre_CTAlloc(HYPRE_Real,d_count_FF, memory_location_P);
A_FC_diag_data = hypre_CTAlloc(HYPRE_Real,d_count_FC, memory_location_P);
A_FF_offd_data = hypre_CTAlloc(HYPRE_Real,o_count_FF, memory_location_P);
A_FC_offd_data = hypre_CTAlloc(HYPRE_Real,o_count_FC, memory_location_P);
}
#ifdef HYPRE_USING_OPENMP
#pragma omp barrier
#endif
row = new_fpt_array[my_thread_num];
rowc = fpt_array[my_thread_num];
d_count_FC = A_FC_diag_i[rowc];
d_count_FF = A_FF_diag_i[row];
o_count_FC = A_FC_offd_i[rowc];
o_count_FF = A_FF_offd_i[row];
for (i=start; i < stop; i++)
{
if (CF_marker[i] == -2)
{
HYPRE_Int jS, jA;
row++;
rowc++;
jA = A_diag_i[i];
A_FF_diag_j[d_count_FF] = fine_to_fine[A_diag_j[jA]];
A_FF_diag_data[d_count_FF++] = A_diag_data[jA++];
for (j = S_diag_i[i]; j < S_diag_i[i+1]; j++)
{
jA = A_diag_i[i]+1;
jS = S_diag_j[j];
while (A_diag_j[jA] != jS) jA++;
if (CF_marker[S_diag_j[j]] > 0)
{
A_FC_diag_j[d_count_FC] = fine_to_coarse[A_diag_j[jA]];
A_FC_diag_data[d_count_FC++] = A_diag_data[jA++];
}
else
{
A_FF_diag_j[d_count_FF] = fine_to_fine[A_diag_j[jA]];
A_FF_diag_data[d_count_FF++] = A_diag_data[jA++];
}
}
A_FF_diag_i[row] = d_count_FF;
A_FC_diag_i[rowc] = d_count_FC;
for (j = S_offd_i[i]; j < S_offd_i[i+1]; j++)
{
jA = A_offd_i[i];
jS = S_offd_j[j];
while (jS != A_offd_j[jA]) jA++;
if (CF_marker_offd[S_offd_j[j]] > 0)
{
A_FC_offd_j[o_count_FC] = fine_to_coarse_offd[A_offd_j[jA]];
A_FC_offd_data[o_count_FC++] = A_offd_data[jA++];
}
else
{
A_FF_offd_j[o_count_FF] = fine_to_fine_offd[A_offd_j[jA]];
A_FF_offd_data[o_count_FF++] = A_offd_data[jA++];
}
}
A_FF_offd_i[row] = o_count_FF;
A_FC_offd_i[rowc] = o_count_FC;
}
else if (CF_marker[i] < 0)
{
HYPRE_Int jS, jA;
rowc++;
for (j = S_diag_i[i]; j < S_diag_i[i+1]; j++)
{
jA = A_diag_i[i]+1;
jS = S_diag_j[j];
while (A_diag_j[jA] != jS) jA++;
if (CF_marker[S_diag_j[j]] > 0)
{
A_FC_diag_j[d_count_FC] = fine_to_coarse[A_diag_j[jA]];
A_FC_diag_data[d_count_FC++] = A_diag_data[jA++];
}
}
A_FC_diag_i[rowc] = d_count_FC;
for (j = S_offd_i[i]; j < S_offd_i[i+1]; j++)
{
jA = A_offd_i[i];
jS = S_offd_j[j];
while (jS != A_offd_j[jA]) jA++;
if (CF_marker_offd[S_offd_j[j]] > 0)
{
A_FC_offd_j[o_count_FC] = fine_to_coarse_offd[A_offd_j[jA]];
A_FC_offd_data[o_count_FC++] = A_offd_data[jA++];
}
}
A_FC_offd_i[rowc] = o_count_FC;
}
}
} /*end parallel region */
A_FC = hypre_ParCSRMatrixCreate(comm,
total_global_fpts,
total_global_cpts,
fpts_starts,
cpts_starts,
num_cols_offd_A_FC,
A_FC_diag_i[n_Fpts],
A_FC_offd_i[n_Fpts]);
A_FF = hypre_ParCSRMatrixCreate(comm,
total_global_new_fpts,
total_global_fpts,
new_fpts_starts,
fpts_starts,
num_cols_offd_A_FF,
A_FF_diag_i[n_new_Fpts],
A_FF_offd_i[n_new_Fpts]);