hypre_ParCSRMatrix * hypre_ParCSRBlockMatrixCompress( hypre_ParCSRBlockMatrix *matrix ) { MPI_Comm comm = hypre_ParCSRBlockMatrixComm(matrix); hypre_CSRBlockMatrix *diag = hypre_ParCSRBlockMatrixDiag(matrix); hypre_CSRBlockMatrix *offd = hypre_ParCSRBlockMatrixOffd(matrix); HYPRE_Int global_num_rows = hypre_ParCSRBlockMatrixGlobalNumRows(matrix); HYPRE_Int global_num_cols = hypre_ParCSRBlockMatrixGlobalNumCols(matrix); HYPRE_Int *row_starts = hypre_ParCSRBlockMatrixRowStarts(matrix); HYPRE_Int *col_starts = hypre_ParCSRBlockMatrixColStarts(matrix); HYPRE_Int num_cols_offd = hypre_CSRBlockMatrixNumCols(offd); HYPRE_Int num_nonzeros_diag = hypre_CSRBlockMatrixNumNonzeros(diag); HYPRE_Int num_nonzeros_offd = hypre_CSRBlockMatrixNumNonzeros(offd); hypre_ParCSRMatrix *matrix_C; HYPRE_Int i; matrix_C = hypre_ParCSRMatrixCreate(comm, global_num_rows, global_num_cols, row_starts,col_starts,num_cols_offd,num_nonzeros_diag,num_nonzeros_offd); hypre_ParCSRMatrixInitialize(matrix_C); hypre_CSRMatrixDestroy(hypre_ParCSRMatrixDiag(matrix_C)); hypre_ParCSRMatrixDiag(matrix_C) = hypre_CSRBlockMatrixCompress(diag); hypre_CSRMatrixDestroy(hypre_ParCSRMatrixOffd(matrix_C)); hypre_ParCSRMatrixOffd(matrix_C) = hypre_CSRBlockMatrixCompress(offd); for(i = 0; i < num_cols_offd; i++) hypre_ParCSRMatrixColMapOffd(matrix_C)[i] = hypre_ParCSRBlockMatrixColMapOffd(matrix)[i]; return matrix_C; }
HYPRE_Int hypre_IJMatrixInitializePETSc(hypre_IJMatrix *matrix) { HYPRE_Int ierr = 0; hypre_ParCSRMatrix *par_matrix = hypre_IJMatrixLocalStorage(matrix); hypre_AuxParCSRMatrix *aux_matrix = hypre_IJMatrixTranslator(matrix); HYPRE_Int local_num_rows = hypre_AuxParCSRMatrixLocalNumRows(aux_matrix); HYPRE_Int local_num_cols = hypre_AuxParCSRMatrixLocalNumCols(aux_matrix); HYPRE_Int *row_space = hypre_AuxParCSRMatrixRowSpace(aux_matrix); HYPRE_Int num_nonzeros = hypre_ParCSRMatrixNumNonzeros(par_matrix); HYPRE_Int local_nnz; HYPRE_Int num_procs, my_id; MPI_Comm comm = hypre_IJMatrixContext(matrix); HYPRE_Int global_num_rows = hypre_IJMatrixM(matrix); hypre_MPI_Comm_size(comm,&num_procs); hypre_MPI_Comm_rank(comm,&my_id); local_nnz = (num_nonzeros/global_num_rows+1)*local_num_rows; if (local_num_rows < 0) hypre_AuxParCSRMatrixLocalNumRows(aux_matrix) = hypre_CSRMatrixNumRows(hypre_ParCSRMatrixDiag(par_matrix)); if (local_num_cols < 0) hypre_AuxParCSRMatrixLocalNumCols(aux_matrix) = hypre_CSRMatrixNumCols(hypre_ParCSRMatrixDiag(par_matrix)); ierr = hypre_AuxParCSRMatrixInitialize(aux_matrix); ierr += hypre_ParCSRMatrixInitialize(par_matrix); return ierr; }
hypre_ParCSRMatrix * hypre_ParCSRBlockMatrixConvertToParCSRMatrix(hypre_ParCSRBlockMatrix *matrix) { MPI_Comm comm = hypre_ParCSRBlockMatrixComm(matrix); hypre_CSRBlockMatrix *diag = hypre_ParCSRBlockMatrixDiag(matrix); hypre_CSRBlockMatrix *offd = hypre_ParCSRBlockMatrixOffd(matrix); HYPRE_Int block_size = hypre_ParCSRBlockMatrixBlockSize(matrix); HYPRE_Int global_num_rows = hypre_ParCSRBlockMatrixGlobalNumRows(matrix); HYPRE_Int global_num_cols = hypre_ParCSRBlockMatrixGlobalNumCols(matrix); HYPRE_Int *row_starts = hypre_ParCSRBlockMatrixRowStarts(matrix); HYPRE_Int *col_starts = hypre_ParCSRBlockMatrixColStarts(matrix); HYPRE_Int num_cols_offd = hypre_CSRBlockMatrixNumCols(offd); HYPRE_Int num_nonzeros_diag = hypre_CSRBlockMatrixNumNonzeros(diag); HYPRE_Int num_nonzeros_offd = hypre_CSRBlockMatrixNumNonzeros(offd); hypre_ParCSRMatrix *matrix_C; HYPRE_Int *matrix_C_row_starts; HYPRE_Int *matrix_C_col_starts; HYPRE_Int *counter, *new_j_map; HYPRE_Int size_j, size_map, index, new_num_cols, removed = 0; HYPRE_Int *offd_j, *col_map_offd, *new_col_map_offd; HYPRE_Int num_procs, i, j; hypre_CSRMatrix *diag_nozeros, *offd_nozeros; hypre_MPI_Comm_size(comm,&num_procs); #ifdef HYPRE_NO_GLOBAL_PARTITION matrix_C_row_starts = hypre_CTAlloc(HYPRE_Int, 2); matrix_C_col_starts = hypre_CTAlloc(HYPRE_Int, 2); for(i = 0; i < 2; i++) { matrix_C_row_starts[i] = row_starts[i]*block_size; matrix_C_col_starts[i] = col_starts[i]*block_size; } #else matrix_C_row_starts = hypre_CTAlloc(HYPRE_Int, num_procs + 1); matrix_C_col_starts = hypre_CTAlloc(HYPRE_Int, num_procs + 1); for(i = 0; i < num_procs + 1; i++) { matrix_C_row_starts[i] = row_starts[i]*block_size; matrix_C_col_starts[i] = col_starts[i]*block_size; } #endif matrix_C = hypre_ParCSRMatrixCreate(comm, global_num_rows*block_size, global_num_cols*block_size, matrix_C_row_starts, matrix_C_col_starts, num_cols_offd*block_size, num_nonzeros_diag*block_size*block_size, num_nonzeros_offd*block_size*block_size); hypre_ParCSRMatrixInitialize(matrix_C); /* DIAG */ hypre_CSRMatrixDestroy(hypre_ParCSRMatrixDiag(matrix_C)); hypre_ParCSRMatrixDiag(matrix_C) = hypre_CSRBlockMatrixConvertToCSRMatrix(diag); /* AB - added to delete zeros */ diag_nozeros = hypre_CSRMatrixDeleteZeros( hypre_ParCSRMatrixDiag(matrix_C), 1e-14); if(diag_nozeros) { hypre_CSRMatrixDestroy(hypre_ParCSRMatrixDiag(matrix_C)); hypre_ParCSRMatrixDiag(matrix_C) = diag_nozeros; } /* OFF-DIAG */ hypre_CSRMatrixDestroy(hypre_ParCSRMatrixOffd(matrix_C)); hypre_ParCSRMatrixOffd(matrix_C) = hypre_CSRBlockMatrixConvertToCSRMatrix(offd); /* AB - added to delete zeros - this just deletes from data and j arrays */ offd_nozeros = hypre_CSRMatrixDeleteZeros( hypre_ParCSRMatrixOffd(matrix_C), 1e-14); if(offd_nozeros) { hypre_CSRMatrixDestroy(hypre_ParCSRMatrixOffd(matrix_C)); hypre_ParCSRMatrixOffd(matrix_C) = offd_nozeros; removed = 1; } /* now convert the col_map_offd */ for (i = 0; i < num_cols_offd; i++) for (j = 0; j < block_size; j++) hypre_ParCSRMatrixColMapOffd(matrix_C)[i*block_size + j] = hypre_ParCSRBlockMatrixColMapOffd(matrix)[i]*block_size + j; /* if we deleted zeros, then it is possible that col_map_offd can be compressed as well - this requires some amount of work that could be skipped... */ if (removed) { size_map = num_cols_offd*block_size; counter = hypre_CTAlloc(HYPRE_Int, size_map); new_j_map = hypre_CTAlloc(HYPRE_Int, size_map); offd_j = hypre_CSRMatrixJ(hypre_ParCSRMatrixOffd(matrix_C)); col_map_offd = hypre_ParCSRMatrixColMapOffd(matrix_C); size_j = hypre_CSRMatrixNumNonzeros(hypre_ParCSRMatrixOffd(matrix_C)); /* mark which off_d entries are found in j */ for (i=0; i < size_j; i++) { counter[offd_j[i]] = 1; } /*now find new numbering for columns (we will delete the cols where counter = 0*/ index = 0; for (i=0; i < size_map; i++) { if (counter[i]) new_j_map[i] = index++; } new_num_cols = index; /* if there are some col entries to remove: */ if (!(index == size_map)) { /* go thru j and adjust entries */ for (i=0; i < size_j; i++) { offd_j[i] = new_j_map[offd_j[i]]; } /*now go thru col map and get rid of non-needed entries */ new_col_map_offd = hypre_CTAlloc(HYPRE_Int, new_num_cols); index = 0; for (i=0; i < size_map; i++) { if (counter[i]) { new_col_map_offd[index++] = col_map_offd[i]; } } /* set the new col map */ hypre_TFree(col_map_offd); hypre_ParCSRMatrixColMapOffd(matrix_C) = new_col_map_offd; /* modify the number of cols */ hypre_CSRMatrixNumCols(hypre_ParCSRMatrixOffd(matrix_C)) = new_num_cols; } hypre_TFree(new_j_map); hypre_TFree(counter); } hypre_ParCSRMatrixSetNumNonzeros( matrix_C ); hypre_ParCSRMatrixSetDNumNonzeros( matrix_C ); /* we will not copy the comm package */ hypre_ParCSRMatrixCommPkg(matrix_C) = NULL; return matrix_C; }