1 #include <../src/ksp/pc/impls/bddc/bddc.h> 2 #include <../src/ksp/pc/impls/bddc/bddcprivate.h> 3 4 #undef __FUNCT__ 5 #define __FUNCT__ "PCBDDCCreateFETIDPMatContext" 6 PetscErrorCode PCBDDCCreateFETIDPMatContext(PC pc, FETIDPMat_ctx *fetidpmat_ctx) 7 { 8 FETIDPMat_ctx newctx; 9 PetscErrorCode ierr; 10 11 PetscFunctionBegin; 12 ierr = PetscNew(&newctx);CHKERRQ(ierr); 13 newctx->lambda_local = 0; 14 newctx->temp_solution_B = 0; 15 newctx->temp_solution_D = 0; 16 newctx->B_delta = 0; 17 newctx->B_Ddelta = 0; /* theoretically belongs to the FETIDP preconditioner */ 18 newctx->l2g_lambda = 0; 19 /* increase the reference count for BDDC preconditioner */ 20 ierr = PetscObjectReference((PetscObject)pc);CHKERRQ(ierr); 21 newctx->pc = pc; 22 *fetidpmat_ctx = newctx; 23 PetscFunctionReturn(0); 24 } 25 26 #undef __FUNCT__ 27 #define __FUNCT__ "PCBDDCCreateFETIDPPCContext" 28 PetscErrorCode PCBDDCCreateFETIDPPCContext(PC pc, FETIDPPC_ctx *fetidppc_ctx) 29 { 30 FETIDPPC_ctx newctx; 31 PetscErrorCode ierr; 32 33 PetscFunctionBegin; 34 ierr = PetscNew(&newctx);CHKERRQ(ierr); 35 newctx->lambda_local = 0; 36 newctx->B_Ddelta = 0; 37 newctx->l2g_lambda = 0; 38 /* increase the reference count for BDDC preconditioner */ 39 ierr = PetscObjectReference((PetscObject)pc);CHKERRQ(ierr); 40 newctx->pc = pc; 41 *fetidppc_ctx = newctx; 42 PetscFunctionReturn(0); 43 } 44 45 #undef __FUNCT__ 46 #define __FUNCT__ "PCBDDCDestroyFETIDPMat" 47 PetscErrorCode PCBDDCDestroyFETIDPMat(Mat A) 48 { 49 FETIDPMat_ctx mat_ctx; 50 PetscErrorCode ierr; 51 52 PetscFunctionBegin; 53 ierr = MatShellGetContext(A,(void**)&mat_ctx);CHKERRQ(ierr); 54 ierr = VecDestroy(&mat_ctx->lambda_local);CHKERRQ(ierr); 55 ierr = VecDestroy(&mat_ctx->temp_solution_D);CHKERRQ(ierr); 56 ierr = VecDestroy(&mat_ctx->temp_solution_B);CHKERRQ(ierr); 57 ierr = MatDestroy(&mat_ctx->B_delta);CHKERRQ(ierr); 58 ierr = MatDestroy(&mat_ctx->B_Ddelta);CHKERRQ(ierr); 59 ierr = VecScatterDestroy(&mat_ctx->l2g_lambda);CHKERRQ(ierr); 60 ierr = PCDestroy(&mat_ctx->pc);CHKERRQ(ierr); /* decrease PCBDDC reference count */ 61 ierr = PetscFree(mat_ctx);CHKERRQ(ierr); 62 PetscFunctionReturn(0); 63 } 64 65 #undef __FUNCT__ 66 #define __FUNCT__ "PCBDDCDestroyFETIDPPC" 67 PetscErrorCode PCBDDCDestroyFETIDPPC(PC pc) 68 { 69 FETIDPPC_ctx pc_ctx; 70 PetscErrorCode ierr; 71 72 PetscFunctionBegin; 73 ierr = PCShellGetContext(pc,(void**)&pc_ctx);CHKERRQ(ierr); 74 ierr = VecDestroy(&pc_ctx->lambda_local);CHKERRQ(ierr); 75 ierr = MatDestroy(&pc_ctx->B_Ddelta);CHKERRQ(ierr); 76 ierr = VecScatterDestroy(&pc_ctx->l2g_lambda);CHKERRQ(ierr); 77 ierr = MatDestroy(&pc_ctx->S_j);CHKERRQ(ierr); 78 ierr = PCDestroy(&pc_ctx->pc);CHKERRQ(ierr); /* decrease PCBDDC reference count */ 79 ierr = PetscFree(pc_ctx);CHKERRQ(ierr); 80 PetscFunctionReturn(0); 81 } 82 83 #undef __FUNCT__ 84 #define __FUNCT__ "PCBDDCSetupFETIDPMatContext" 85 PetscErrorCode PCBDDCSetupFETIDPMatContext(FETIDPMat_ctx fetidpmat_ctx ) 86 { 87 PetscErrorCode ierr; 88 PC_IS *pcis=(PC_IS*)fetidpmat_ctx->pc->data; 89 PC_BDDC *pcbddc=(PC_BDDC*)fetidpmat_ctx->pc->data; 90 PCBDDCGraph mat_graph=pcbddc->mat_graph; 91 Mat_IS *matis = (Mat_IS*)fetidpmat_ctx->pc->pmat->data; 92 MPI_Comm comm; 93 Mat ScalingMat; 94 Vec lambda_global; 95 IS IS_l2g_lambda; 96 IS subset,subset_mult,subset_n; 97 PetscBool skip_node,fully_redundant; 98 PetscInt i,j,k,s,n_boundary_dofs,n_global_lambda,n_vertices,partial_sum; 99 PetscInt cum,n_local_lambda,n_lambda_for_dof,dual_size,n_neg_values,n_pos_values; 100 PetscMPIInt rank,size,buf_size,neigh; 101 PetscScalar scalar_value; 102 PetscInt *vertex_indices; 103 PetscInt *dual_dofs_boundary_indices,*aux_local_numbering_1; 104 const PetscInt *aux_global_numbering; 105 PetscInt *aux_sums,*cols_B_delta,*l2g_indices; 106 PetscScalar *array,*scaling_factors,*vals_B_delta; 107 PetscInt *aux_local_numbering_2; 108 /* For communication of scaling factors */ 109 PetscInt *ptrs_buffer,neigh_position; 110 PetscScalar **all_factors,*send_buffer,*recv_buffer; 111 MPI_Request *send_reqs,*recv_reqs; 112 /* tests */ 113 Vec test_vec; 114 PetscBool test_fetidp; 115 PetscViewer viewer; 116 117 PetscFunctionBegin; 118 ierr = PetscObjectGetComm((PetscObject)(fetidpmat_ctx->pc),&comm);CHKERRQ(ierr); 119 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 120 ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr); 121 122 /* Default type of lagrange multipliers is non-redundant */ 123 fully_redundant = PETSC_FALSE; 124 ierr = PetscOptionsGetBool(NULL,NULL,"-fetidp_fullyredundant",&fully_redundant,NULL);CHKERRQ(ierr); 125 126 /* Evaluate local and global number of lagrange multipliers */ 127 ierr = VecSet(pcis->vec1_N,0.0);CHKERRQ(ierr); 128 n_local_lambda = 0; 129 partial_sum = 0; 130 n_boundary_dofs = 0; 131 s = 0; 132 /* Get Vertices used to define the BDDC */ 133 n_vertices = pcbddc->n_vertices; 134 vertex_indices = pcbddc->local_primal_ref_node; 135 dual_size = pcis->n_B-n_vertices; 136 ierr = PetscMalloc1(dual_size,&dual_dofs_boundary_indices);CHKERRQ(ierr); 137 ierr = PetscMalloc1(dual_size,&aux_local_numbering_1);CHKERRQ(ierr); 138 ierr = PetscMalloc1(dual_size,&aux_local_numbering_2);CHKERRQ(ierr); 139 140 ierr = VecGetArray(pcis->vec1_N,&array);CHKERRQ(ierr); 141 for (i=0;i<pcis->n;i++){ 142 j = mat_graph->count[i]; /* RECALL: mat_graph->count[i] does not count myself */ 143 if ( j > 0 ) { 144 n_boundary_dofs++; 145 } 146 skip_node = PETSC_FALSE; 147 if ( s < n_vertices && vertex_indices[s]==i) { /* it works for a sorted set of vertices */ 148 skip_node = PETSC_TRUE; 149 s++; 150 } 151 if (j < 1) { 152 skip_node = PETSC_TRUE; 153 } 154 if ( !skip_node ) { 155 if (fully_redundant) { 156 /* fully redundant set of lagrange multipliers */ 157 n_lambda_for_dof = (j*(j+1))/2; 158 } else { 159 n_lambda_for_dof = j; 160 } 161 n_local_lambda += j; 162 /* needed to evaluate global number of lagrange multipliers */ 163 array[i]=(1.0*n_lambda_for_dof)/(j+1.0); /* already scaled for the next global sum */ 164 /* store some data needed */ 165 dual_dofs_boundary_indices[partial_sum] = n_boundary_dofs-1; 166 aux_local_numbering_1[partial_sum] = i; 167 aux_local_numbering_2[partial_sum] = n_lambda_for_dof; 168 partial_sum++; 169 } 170 } 171 ierr = VecRestoreArray(pcis->vec1_N,&array);CHKERRQ(ierr); 172 173 ierr = VecSet(pcis->vec1_global,0.0);CHKERRQ(ierr); 174 ierr = VecScatterBegin(matis->rctx,pcis->vec1_N,pcis->vec1_global,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 175 ierr = VecScatterEnd(matis->rctx,pcis->vec1_N,pcis->vec1_global,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 176 ierr = VecSum(pcis->vec1_global,&scalar_value);CHKERRQ(ierr); 177 fetidpmat_ctx->n_lambda = (PetscInt)PetscRealPart(scalar_value); 178 179 /* compute global ordering of lagrange multipliers and associate l2g map */ 180 ierr = ISCreateGeneral(comm,partial_sum,aux_local_numbering_1,PETSC_COPY_VALUES,&subset_n);CHKERRQ(ierr); 181 ierr = ISLocalToGlobalMappingApplyIS(pcis->mapping,subset_n,&subset);CHKERRQ(ierr); 182 ierr = ISDestroy(&subset_n);CHKERRQ(ierr); 183 ierr = ISCreateGeneral(comm,partial_sum,aux_local_numbering_2,PETSC_OWN_POINTER,&subset_mult);CHKERRQ(ierr); 184 ierr = PCBDDCSubsetNumbering(subset,subset_mult,&i,&subset_n);CHKERRQ(ierr); 185 ierr = ISDestroy(&subset);CHKERRQ(ierr); 186 if (i != fetidpmat_ctx->n_lambda) SETERRQ2(PETSC_COMM_WORLD,PETSC_ERR_PLIB,"Global number of multipliers mismatch! (%d!=%d)\n",fetidpmat_ctx->n_lambda,i); 187 188 /* init data for scaling factors exchange */ 189 partial_sum = 0; 190 j = 0; 191 ierr = PetscMalloc1(pcis->n_neigh,&ptrs_buffer);CHKERRQ(ierr); 192 ierr = PetscMalloc1(pcis->n_neigh-1,&send_reqs);CHKERRQ(ierr); 193 ierr = PetscMalloc1(pcis->n_neigh-1,&recv_reqs);CHKERRQ(ierr); 194 ierr = PetscMalloc1(pcis->n,&all_factors);CHKERRQ(ierr); 195 ptrs_buffer[0]=0; 196 for (i=1;i<pcis->n_neigh;i++) { 197 partial_sum += pcis->n_shared[i]; 198 ptrs_buffer[i] = ptrs_buffer[i-1]+pcis->n_shared[i]; 199 } 200 ierr = PetscMalloc1(partial_sum,&send_buffer);CHKERRQ(ierr); 201 ierr = PetscMalloc1(partial_sum,&recv_buffer);CHKERRQ(ierr); 202 ierr = PetscMalloc1(partial_sum,&all_factors[0]);CHKERRQ(ierr); 203 for (i=0;i<pcis->n-1;i++) { 204 j = mat_graph->count[i]; 205 all_factors[i+1]=all_factors[i]+j; 206 } 207 /* scatter B scaling to N vec */ 208 ierr = VecScatterBegin(pcis->N_to_B,pcis->D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 209 ierr = VecScatterEnd(pcis->N_to_B,pcis->D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 210 /* communications */ 211 ierr = VecGetArrayRead(pcis->vec1_N,(const PetscScalar**)&array);CHKERRQ(ierr); 212 for (i=1;i<pcis->n_neigh;i++) { 213 for (j=0;j<pcis->n_shared[i];j++) { 214 send_buffer[ptrs_buffer[i-1]+j]=array[pcis->shared[i][j]]; 215 } 216 ierr = PetscMPIIntCast(ptrs_buffer[i]-ptrs_buffer[i-1],&buf_size);CHKERRQ(ierr); 217 ierr = PetscMPIIntCast(pcis->neigh[i],&neigh);CHKERRQ(ierr); 218 ierr = MPI_Isend(&send_buffer[ptrs_buffer[i-1]],buf_size,MPIU_SCALAR,neigh,0,comm,&send_reqs[i-1]);CHKERRQ(ierr); 219 ierr = MPI_Irecv(&recv_buffer[ptrs_buffer[i-1]],buf_size,MPIU_SCALAR,neigh,0,comm,&recv_reqs[i-1]);CHKERRQ(ierr); 220 } 221 ierr = VecRestoreArrayRead(pcis->vec1_N,(const PetscScalar**)&array);CHKERRQ(ierr); 222 ierr = MPI_Waitall((pcis->n_neigh-1),recv_reqs,MPI_STATUSES_IGNORE);CHKERRQ(ierr); 223 /* put values in correct places */ 224 for (i=1;i<pcis->n_neigh;i++) { 225 for (j=0;j<pcis->n_shared[i];j++) { 226 k = pcis->shared[i][j]; 227 neigh_position = 0; 228 while(mat_graph->neighbours_set[k][neigh_position] != pcis->neigh[i]) {neigh_position++;} 229 all_factors[k][neigh_position]=recv_buffer[ptrs_buffer[i-1]+j]; 230 } 231 } 232 ierr = MPI_Waitall((pcis->n_neigh-1),send_reqs,MPI_STATUSES_IGNORE);CHKERRQ(ierr); 233 ierr = PetscFree(send_reqs);CHKERRQ(ierr); 234 ierr = PetscFree(recv_reqs);CHKERRQ(ierr); 235 ierr = PetscFree(send_buffer);CHKERRQ(ierr); 236 ierr = PetscFree(recv_buffer);CHKERRQ(ierr); 237 ierr = PetscFree(ptrs_buffer);CHKERRQ(ierr); 238 239 /* Compute B and B_delta (local actions) */ 240 ierr = PetscMalloc1(pcis->n_neigh,&aux_sums);CHKERRQ(ierr); 241 ierr = PetscMalloc1(n_local_lambda,&l2g_indices);CHKERRQ(ierr); 242 ierr = PetscMalloc1(n_local_lambda,&vals_B_delta);CHKERRQ(ierr); 243 ierr = PetscMalloc1(n_local_lambda,&cols_B_delta);CHKERRQ(ierr); 244 ierr = PetscMalloc1(n_local_lambda,&scaling_factors);CHKERRQ(ierr); 245 ierr = ISGetIndices(subset_n,&aux_global_numbering);CHKERRQ(ierr); 246 n_global_lambda=0; 247 partial_sum=0; 248 cum = 0; 249 for (i=0;i<dual_size;i++) { 250 n_global_lambda = aux_global_numbering[cum]; 251 j = mat_graph->count[aux_local_numbering_1[i]]; 252 aux_sums[0]=0; 253 for (s=1;s<j;s++) { 254 aux_sums[s]=aux_sums[s-1]+j-s+1; 255 } 256 array = all_factors[aux_local_numbering_1[i]]; 257 n_neg_values = 0; 258 while(n_neg_values < j && mat_graph->neighbours_set[aux_local_numbering_1[i]][n_neg_values] < rank) {n_neg_values++;} 259 n_pos_values = j - n_neg_values; 260 if (fully_redundant) { 261 for (s=0;s<n_neg_values;s++) { 262 l2g_indices [partial_sum+s]=aux_sums[s]+n_neg_values-s-1+n_global_lambda; 263 cols_B_delta [partial_sum+s]=dual_dofs_boundary_indices[i]; 264 vals_B_delta [partial_sum+s]=-1.0; 265 scaling_factors[partial_sum+s]=array[s]; 266 } 267 for (s=0;s<n_pos_values;s++) { 268 l2g_indices [partial_sum+s+n_neg_values]=aux_sums[n_neg_values]+s+n_global_lambda; 269 cols_B_delta [partial_sum+s+n_neg_values]=dual_dofs_boundary_indices[i]; 270 vals_B_delta [partial_sum+s+n_neg_values]=1.0; 271 scaling_factors[partial_sum+s+n_neg_values]=array[s+n_neg_values]; 272 } 273 partial_sum += j; 274 } else { 275 /* l2g_indices and default cols and vals of B_delta */ 276 for (s=0;s<j;s++) { 277 l2g_indices [partial_sum+s]=n_global_lambda+s; 278 cols_B_delta [partial_sum+s]=dual_dofs_boundary_indices[i]; 279 vals_B_delta [partial_sum+s]=0.0; 280 } 281 /* B_delta */ 282 if ( n_neg_values > 0 ) { /* there's a rank next to me to the left */ 283 vals_B_delta [partial_sum+n_neg_values-1]=-1.0; 284 } 285 if ( n_neg_values < j ) { /* there's a rank next to me to the right */ 286 vals_B_delta [partial_sum+n_neg_values]=1.0; 287 } 288 /* scaling as in Klawonn-Widlund 1999*/ 289 for (s=0;s<n_neg_values;s++) { 290 scalar_value = 0.0; 291 for (k=0;k<s+1;k++) { 292 scalar_value += array[k]; 293 } 294 scaling_factors[partial_sum+s] = -scalar_value; 295 } 296 for (s=0;s<n_pos_values;s++) { 297 scalar_value = 0.0; 298 for (k=s+n_neg_values;k<j;k++) { 299 scalar_value += array[k]; 300 } 301 scaling_factors[partial_sum+s+n_neg_values] = scalar_value; 302 } 303 partial_sum += j; 304 } 305 cum += aux_local_numbering_2[i]; 306 } 307 ierr = ISRestoreIndices(subset_n,&aux_global_numbering);CHKERRQ(ierr); 308 ierr = ISDestroy(&subset_mult);CHKERRQ(ierr); 309 ierr = ISDestroy(&subset_n);CHKERRQ(ierr); 310 ierr = PetscFree(aux_sums);CHKERRQ(ierr); 311 ierr = PetscFree(aux_local_numbering_1);CHKERRQ(ierr); 312 ierr = PetscFree(dual_dofs_boundary_indices);CHKERRQ(ierr); 313 ierr = PetscFree(all_factors[0]);CHKERRQ(ierr); 314 ierr = PetscFree(all_factors);CHKERRQ(ierr); 315 316 /* Local to global mapping of fetidpmat */ 317 ierr = VecCreate(PETSC_COMM_SELF,&fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 318 ierr = VecSetSizes(fetidpmat_ctx->lambda_local,n_local_lambda,n_local_lambda);CHKERRQ(ierr); 319 ierr = VecSetType(fetidpmat_ctx->lambda_local,VECSEQ);CHKERRQ(ierr); 320 ierr = VecCreate(comm,&lambda_global);CHKERRQ(ierr); 321 ierr = VecSetSizes(lambda_global,PETSC_DECIDE,fetidpmat_ctx->n_lambda);CHKERRQ(ierr); 322 ierr = VecSetType(lambda_global,VECMPI);CHKERRQ(ierr); 323 ierr = ISCreateGeneral(comm,n_local_lambda,l2g_indices,PETSC_OWN_POINTER,&IS_l2g_lambda);CHKERRQ(ierr); 324 ierr = VecScatterCreate(fetidpmat_ctx->lambda_local,(IS)0,lambda_global,IS_l2g_lambda,&fetidpmat_ctx->l2g_lambda);CHKERRQ(ierr); 325 ierr = ISDestroy(&IS_l2g_lambda);CHKERRQ(ierr); 326 327 /* Create local part of B_delta */ 328 ierr = MatCreate(PETSC_COMM_SELF,&fetidpmat_ctx->B_delta);CHKERRQ(ierr); 329 ierr = MatSetSizes(fetidpmat_ctx->B_delta,n_local_lambda,pcis->n_B,n_local_lambda,pcis->n_B);CHKERRQ(ierr); 330 ierr = MatSetType(fetidpmat_ctx->B_delta,MATSEQAIJ);CHKERRQ(ierr); 331 ierr = MatSeqAIJSetPreallocation(fetidpmat_ctx->B_delta,1,NULL);CHKERRQ(ierr); 332 ierr = MatSetOption(fetidpmat_ctx->B_delta,MAT_IGNORE_ZERO_ENTRIES,PETSC_TRUE);CHKERRQ(ierr); 333 for (i=0;i<n_local_lambda;i++) { 334 ierr = MatSetValue(fetidpmat_ctx->B_delta,i,cols_B_delta[i],vals_B_delta[i],INSERT_VALUES);CHKERRQ(ierr); 335 } 336 ierr = PetscFree(vals_B_delta);CHKERRQ(ierr); 337 ierr = MatAssemblyBegin(fetidpmat_ctx->B_delta,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 338 ierr = MatAssemblyEnd (fetidpmat_ctx->B_delta,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 339 340 if (fully_redundant) { 341 ierr = MatCreate(PETSC_COMM_SELF,&ScalingMat);CHKERRQ(ierr); 342 ierr = MatSetSizes(ScalingMat,n_local_lambda,n_local_lambda,n_local_lambda,n_local_lambda);CHKERRQ(ierr); 343 ierr = MatSetType(ScalingMat,MATSEQAIJ);CHKERRQ(ierr); 344 ierr = MatSeqAIJSetPreallocation(ScalingMat,1,NULL);CHKERRQ(ierr); 345 for (i=0;i<n_local_lambda;i++) { 346 ierr = MatSetValue(ScalingMat,i,i,scaling_factors[i],INSERT_VALUES);CHKERRQ(ierr); 347 } 348 ierr = MatAssemblyBegin(ScalingMat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 349 ierr = MatAssemblyEnd (ScalingMat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 350 ierr = MatMatMult(ScalingMat,fetidpmat_ctx->B_delta,MAT_INITIAL_MATRIX,PETSC_DEFAULT,&fetidpmat_ctx->B_Ddelta);CHKERRQ(ierr); 351 ierr = MatDestroy(&ScalingMat);CHKERRQ(ierr); 352 } else { 353 ierr = MatCreate(PETSC_COMM_SELF,&fetidpmat_ctx->B_Ddelta);CHKERRQ(ierr); 354 ierr = MatSetSizes(fetidpmat_ctx->B_Ddelta,n_local_lambda,pcis->n_B,n_local_lambda,pcis->n_B);CHKERRQ(ierr); 355 ierr = MatSetType(fetidpmat_ctx->B_Ddelta,MATSEQAIJ);CHKERRQ(ierr); 356 ierr = MatSeqAIJSetPreallocation(fetidpmat_ctx->B_Ddelta,1,NULL);CHKERRQ(ierr); 357 for (i=0;i<n_local_lambda;i++) { 358 ierr = MatSetValue(fetidpmat_ctx->B_Ddelta,i,cols_B_delta[i],scaling_factors[i],INSERT_VALUES);CHKERRQ(ierr); 359 } 360 ierr = MatAssemblyBegin(fetidpmat_ctx->B_Ddelta,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 361 ierr = MatAssemblyEnd (fetidpmat_ctx->B_Ddelta,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 362 } 363 ierr = PetscFree(scaling_factors);CHKERRQ(ierr); 364 ierr = PetscFree(cols_B_delta);CHKERRQ(ierr); 365 366 /* Create some vectors needed by fetidp */ 367 ierr = VecDuplicate(pcis->vec1_B,&fetidpmat_ctx->temp_solution_B);CHKERRQ(ierr); 368 ierr = VecDuplicate(pcis->vec1_D,&fetidpmat_ctx->temp_solution_D);CHKERRQ(ierr); 369 370 test_fetidp = PETSC_FALSE; 371 ierr = PetscOptionsGetBool(NULL,NULL,"-fetidp_check",&test_fetidp,NULL);CHKERRQ(ierr); 372 373 if (test_fetidp && !pcbddc->use_deluxe_scaling) { 374 375 PetscReal real_value; 376 377 ierr = PetscViewerASCIIGetStdout(comm,&viewer);CHKERRQ(ierr); 378 ierr = PetscViewerASCIIPushSynchronized(viewer);CHKERRQ(ierr); 379 ierr = PetscViewerASCIIPrintf(viewer,"----------FETI_DP TESTS--------------\n");CHKERRQ(ierr); 380 ierr = PetscViewerASCIIPrintf(viewer,"All tests should return zero!\n");CHKERRQ(ierr); 381 ierr = PetscViewerASCIIPrintf(viewer,"FETIDP MAT context in the ");CHKERRQ(ierr); 382 if (fully_redundant) { 383 ierr = PetscViewerASCIIPrintf(viewer,"fully redundant case for lagrange multipliers.\n");CHKERRQ(ierr); 384 } else { 385 ierr = PetscViewerASCIIPrintf(viewer,"Non-fully redundant case for lagrange multiplier.\n");CHKERRQ(ierr); 386 } 387 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 388 389 /******************************************************************/ 390 /* TEST A/B: Test numbering of global lambda dofs */ 391 /******************************************************************/ 392 393 ierr = VecDuplicate(fetidpmat_ctx->lambda_local,&test_vec);CHKERRQ(ierr); 394 ierr = VecSet(lambda_global,1.0);CHKERRQ(ierr); 395 ierr = VecSet(test_vec,1.0);CHKERRQ(ierr); 396 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 397 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 398 scalar_value = -1.0; 399 ierr = VecAXPY(test_vec,scalar_value,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 400 ierr = VecNorm(test_vec,NORM_INFINITY,&real_value);CHKERRQ(ierr); 401 ierr = VecDestroy(&test_vec);CHKERRQ(ierr); 402 ierr = PetscViewerASCIISynchronizedPrintf(viewer,"A[%04d]: CHECK glob to loc: % 1.14e\n",rank,real_value);CHKERRQ(ierr); 403 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 404 if (fully_redundant) { 405 ierr = VecSet(lambda_global,0.0);CHKERRQ(ierr); 406 ierr = VecSet(fetidpmat_ctx->lambda_local,0.5);CHKERRQ(ierr); 407 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 408 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 409 ierr = VecSum(lambda_global,&scalar_value);CHKERRQ(ierr); 410 ierr = PetscViewerASCIISynchronizedPrintf(viewer,"B[%04d]: CHECK loc to glob: % 1.14e\n",rank,PetscRealPart(scalar_value)-fetidpmat_ctx->n_lambda);CHKERRQ(ierr); 411 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 412 } 413 414 /******************************************************************/ 415 /* TEST C: It should holds B_delta*w=0, w\in\widehat{W} */ 416 /* This is the meaning of the B matrix */ 417 /******************************************************************/ 418 419 ierr = VecSetRandom(pcis->vec1_N,NULL);CHKERRQ(ierr); 420 ierr = VecSet(pcis->vec1_global,0.0);CHKERRQ(ierr); 421 ierr = VecScatterBegin(matis->rctx,pcis->vec1_N,pcis->vec1_global,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 422 ierr = VecScatterEnd(matis->rctx,pcis->vec1_N,pcis->vec1_global,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 423 ierr = VecScatterBegin(matis->rctx,pcis->vec1_global,pcis->vec1_N,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 424 ierr = VecScatterEnd(matis->rctx,pcis->vec1_global,pcis->vec1_N,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 425 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 426 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 427 /* Action of B_delta */ 428 ierr = MatMult(fetidpmat_ctx->B_delta,pcis->vec1_B,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 429 ierr = VecSet(lambda_global,0.0);CHKERRQ(ierr); 430 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 431 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 432 ierr = VecNorm(lambda_global,NORM_INFINITY,&real_value);CHKERRQ(ierr); 433 ierr = PetscViewerASCIIPrintf(viewer,"C[coll]: CHECK infty norm of B_delta*w (w continuous): % 1.14e\n",real_value);CHKERRQ(ierr); 434 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 435 436 /******************************************************************/ 437 /* TEST D: It should holds E_Dw = w - P_Dw w\in\widetilde{W} */ 438 /* E_D = R_D^TR */ 439 /* P_D = B_{D,delta}^T B_{delta} */ 440 /* eq.44 Mandel Tezaur and Dohrmann 2005 */ 441 /******************************************************************/ 442 443 /* compute a random vector in \widetilde{W} */ 444 ierr = VecSetRandom(pcis->vec1_N,NULL);CHKERRQ(ierr); 445 scalar_value = 0.0; /* set zero at vertices */ 446 ierr = VecGetArray(pcis->vec1_N,&array);CHKERRQ(ierr); 447 for (i=0;i<n_vertices;i++) { array[vertex_indices[i]]=scalar_value; } 448 ierr = VecRestoreArray(pcis->vec1_N,&array);CHKERRQ(ierr); 449 /* store w for final comparison */ 450 ierr = VecDuplicate(pcis->vec1_B,&test_vec);CHKERRQ(ierr); 451 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,test_vec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 452 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,test_vec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 453 454 /* Jump operator P_D : results stored in pcis->vec1_B */ 455 456 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 457 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 458 /* Action of B_delta */ 459 ierr = MatMult(fetidpmat_ctx->B_delta,pcis->vec1_B,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 460 ierr = VecSet(lambda_global,0.0);CHKERRQ(ierr); 461 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 462 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 463 /* Action of B_Ddelta^T */ 464 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 465 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 466 ierr = MatMultTranspose(fetidpmat_ctx->B_Ddelta,fetidpmat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 467 468 /* Average operator E_D : results stored in pcis->vec2_B */ 469 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,pcis->vec2_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 470 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,pcis->vec2_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 471 ierr = PCBDDCScalingExtension(fetidpmat_ctx->pc,pcis->vec2_B,pcis->vec1_global);CHKERRQ(ierr); 472 ierr = VecScatterBegin(pcis->global_to_B,pcis->vec1_global,pcis->vec2_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 473 ierr = VecScatterEnd (pcis->global_to_B,pcis->vec1_global,pcis->vec2_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 474 475 /* test E_D=I-P_D */ 476 scalar_value = 1.0; 477 ierr = VecAXPY(pcis->vec1_B,scalar_value,pcis->vec2_B);CHKERRQ(ierr); 478 scalar_value = -1.0; 479 ierr = VecAXPY(pcis->vec1_B,scalar_value,test_vec);CHKERRQ(ierr); 480 ierr = VecNorm(pcis->vec1_B,NORM_INFINITY,&real_value);CHKERRQ(ierr); 481 ierr = VecDestroy(&test_vec);CHKERRQ(ierr); 482 ierr = PetscViewerASCIISynchronizedPrintf(viewer,"D[%04d] CHECK infty norm of E_D + P_D - I: % 1.14e\n",rank,real_value);CHKERRQ(ierr); 483 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 484 485 /******************************************************************/ 486 /* TEST E: It should holds R_D^TP_Dw=0 w\in\widetilde{W} */ 487 /* eq.48 Mandel Tezaur and Dohrmann 2005 */ 488 /******************************************************************/ 489 490 ierr = VecSetRandom(pcis->vec1_N,NULL);CHKERRQ(ierr); 491 ierr = VecGetArray(pcis->vec1_N,&array);CHKERRQ(ierr); 492 scalar_value = 0.0; /* set zero at vertices */ 493 for (i=0;i<n_vertices;i++) { array[vertex_indices[i]]=scalar_value; } 494 ierr = VecRestoreArray(pcis->vec1_N,&array);CHKERRQ(ierr); 495 496 /* Jump operator P_D : results stored in pcis->vec1_B */ 497 498 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 499 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 500 /* Action of B_delta */ 501 ierr = MatMult(fetidpmat_ctx->B_delta,pcis->vec1_B,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 502 ierr = VecSet(lambda_global,0.0);CHKERRQ(ierr); 503 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 504 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 505 /* Action of B_Ddelta^T */ 506 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 507 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 508 ierr = MatMultTranspose(fetidpmat_ctx->B_Ddelta,fetidpmat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 509 /* scaling */ 510 ierr = PCBDDCScalingExtension(fetidpmat_ctx->pc,pcis->vec1_B,pcis->vec1_global);CHKERRQ(ierr); 511 ierr = VecNorm(pcis->vec1_global,NORM_INFINITY,&real_value);CHKERRQ(ierr); 512 ierr = PetscViewerASCIIPrintf(viewer,"E[coll]: CHECK infty norm of R^T_D P_D: % 1.14e\n",real_value);CHKERRQ(ierr); 513 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 514 515 if (!fully_redundant) { 516 /******************************************************************/ 517 /* TEST F: It should holds B_{delta}B^T_{D,delta}=I */ 518 /* Corollary thm 14 Mandel Tezaur and Dohrmann 2005 */ 519 /******************************************************************/ 520 ierr = VecDuplicate(lambda_global,&test_vec);CHKERRQ(ierr); 521 ierr = VecSetRandom(lambda_global,NULL);CHKERRQ(ierr); 522 /* Action of B_Ddelta^T */ 523 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 524 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 525 ierr = MatMultTranspose(fetidpmat_ctx->B_Ddelta,fetidpmat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 526 /* Action of B_delta */ 527 ierr = MatMult(fetidpmat_ctx->B_delta,pcis->vec1_B,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 528 ierr = VecSet(test_vec,0.0);CHKERRQ(ierr); 529 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,test_vec,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 530 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,test_vec,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 531 scalar_value = -1.0; 532 ierr = VecAXPY(lambda_global,scalar_value,test_vec);CHKERRQ(ierr); 533 ierr = VecNorm(lambda_global,NORM_INFINITY,&real_value);CHKERRQ(ierr); 534 ierr = PetscViewerASCIIPrintf(viewer,"E[coll]: CHECK infty norm of P^T_D - I: % 1.14e\n",real_value);CHKERRQ(ierr); 535 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 536 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 537 ierr = VecDestroy(&test_vec);CHKERRQ(ierr); 538 } 539 } 540 /* final cleanup */ 541 ierr = VecDestroy(&lambda_global);CHKERRQ(ierr); 542 543 PetscFunctionReturn(0); 544 } 545 546 #undef __FUNCT__ 547 #define __FUNCT__ "PCBDDCSetupFETIDPPCContext" 548 PetscErrorCode PCBDDCSetupFETIDPPCContext(Mat fetimat, FETIDPPC_ctx fetidppc_ctx) 549 { 550 FETIDPMat_ctx mat_ctx; 551 PC_IS *pcis; 552 PetscErrorCode ierr; 553 554 PetscFunctionBegin; 555 ierr = MatShellGetContext(fetimat,(void**)&mat_ctx);CHKERRQ(ierr); 556 /* get references from objects created when setting up feti mat context */ 557 ierr = PetscObjectReference((PetscObject)mat_ctx->lambda_local);CHKERRQ(ierr); 558 fetidppc_ctx->lambda_local = mat_ctx->lambda_local; 559 ierr = PetscObjectReference((PetscObject)mat_ctx->B_Ddelta);CHKERRQ(ierr); 560 fetidppc_ctx->B_Ddelta = mat_ctx->B_Ddelta; 561 ierr = PetscObjectReference((PetscObject)mat_ctx->l2g_lambda);CHKERRQ(ierr); 562 fetidppc_ctx->l2g_lambda = mat_ctx->l2g_lambda; 563 /* create local Schur complement matrix */ 564 pcis = (PC_IS*)fetidppc_ctx->pc->data; 565 ierr = MatCreateSchurComplement(pcis->A_II,pcis->A_II,pcis->A_IB,pcis->A_BI,pcis->A_BB,&fetidppc_ctx->S_j);CHKERRQ(ierr); 566 ierr = MatSchurComplementSetKSP(fetidppc_ctx->S_j,pcis->ksp_D);CHKERRQ(ierr); 567 PetscFunctionReturn(0); 568 } 569 570 #undef __FUNCT__ 571 #define __FUNCT__ "FETIDPMatMult" 572 PetscErrorCode FETIDPMatMult(Mat fetimat, Vec x, Vec y) 573 { 574 FETIDPMat_ctx mat_ctx; 575 PC_IS *pcis; 576 PetscErrorCode ierr; 577 578 PetscFunctionBegin; 579 ierr = MatShellGetContext(fetimat,(void**)&mat_ctx);CHKERRQ(ierr); 580 pcis = (PC_IS*)mat_ctx->pc->data; 581 /* Application of B_delta^T */ 582 ierr = VecScatterBegin(mat_ctx->l2g_lambda,x,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 583 ierr = VecScatterEnd(mat_ctx->l2g_lambda,x,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 584 ierr = MatMultTranspose(mat_ctx->B_delta,mat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 585 /* Application of \widetilde{S}^-1 */ 586 ierr = VecSet(pcis->vec1_D,0.0);CHKERRQ(ierr); 587 ierr = PCBDDCApplyInterfacePreconditioner(mat_ctx->pc,PETSC_FALSE);CHKERRQ(ierr); 588 /* Application of B_delta */ 589 ierr = MatMult(mat_ctx->B_delta,pcis->vec1_B,mat_ctx->lambda_local);CHKERRQ(ierr); 590 ierr = VecSet(y,0.0);CHKERRQ(ierr); 591 ierr = VecScatterBegin(mat_ctx->l2g_lambda,mat_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 592 ierr = VecScatterEnd(mat_ctx->l2g_lambda,mat_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 593 PetscFunctionReturn(0); 594 } 595 596 #undef __FUNCT__ 597 #define __FUNCT__ "FETIDPMatMultTranspose" 598 PetscErrorCode FETIDPMatMultTranspose(Mat fetimat, Vec x, Vec y) 599 { 600 FETIDPMat_ctx mat_ctx; 601 PC_IS *pcis; 602 PetscErrorCode ierr; 603 604 PetscFunctionBegin; 605 ierr = MatShellGetContext(fetimat,(void**)&mat_ctx);CHKERRQ(ierr); 606 pcis = (PC_IS*)mat_ctx->pc->data; 607 /* Application of B_delta^T */ 608 ierr = VecScatterBegin(mat_ctx->l2g_lambda,x,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 609 ierr = VecScatterEnd(mat_ctx->l2g_lambda,x,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 610 ierr = MatMultTranspose(mat_ctx->B_delta,mat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 611 /* Application of \widetilde{S}^-1 */ 612 ierr = VecSet(pcis->vec1_D,0.0);CHKERRQ(ierr); 613 ierr = PCBDDCApplyInterfacePreconditioner(mat_ctx->pc,PETSC_TRUE);CHKERRQ(ierr); 614 /* Application of B_delta */ 615 ierr = MatMult(mat_ctx->B_delta,pcis->vec1_B,mat_ctx->lambda_local);CHKERRQ(ierr); 616 ierr = VecSet(y,0.0);CHKERRQ(ierr); 617 ierr = VecScatterBegin(mat_ctx->l2g_lambda,mat_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 618 ierr = VecScatterEnd(mat_ctx->l2g_lambda,mat_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 619 PetscFunctionReturn(0); 620 } 621 622 #undef __FUNCT__ 623 #define __FUNCT__ "FETIDPPCApply" 624 PetscErrorCode FETIDPPCApply(PC fetipc, Vec x, Vec y) 625 { 626 FETIDPPC_ctx pc_ctx; 627 PC_IS *pcis; 628 PetscErrorCode ierr; 629 630 PetscFunctionBegin; 631 ierr = PCShellGetContext(fetipc,(void**)&pc_ctx);CHKERRQ(ierr); 632 pcis = (PC_IS*)pc_ctx->pc->data; 633 /* Application of B_Ddelta^T */ 634 ierr = VecScatterBegin(pc_ctx->l2g_lambda,x,pc_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 635 ierr = VecScatterEnd(pc_ctx->l2g_lambda,x,pc_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 636 ierr = VecSet(pcis->vec2_B,0.0);CHKERRQ(ierr); 637 ierr = MatMultTranspose(pc_ctx->B_Ddelta,pc_ctx->lambda_local,pcis->vec2_B);CHKERRQ(ierr); 638 /* Application of local Schur complement */ 639 ierr = MatMult(pc_ctx->S_j,pcis->vec2_B,pcis->vec1_B);CHKERRQ(ierr); 640 /* Application of B_Ddelta */ 641 ierr = MatMult(pc_ctx->B_Ddelta,pcis->vec1_B,pc_ctx->lambda_local);CHKERRQ(ierr); 642 ierr = VecSet(y,0.0);CHKERRQ(ierr); 643 ierr = VecScatterBegin(pc_ctx->l2g_lambda,pc_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 644 ierr = VecScatterEnd(pc_ctx->l2g_lambda,pc_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 645 PetscFunctionReturn(0); 646 } 647 648 #undef __FUNCT__ 649 #define __FUNCT__ "FETIDPPCApplyTranspose" 650 PetscErrorCode FETIDPPCApplyTranspose(PC fetipc, Vec x, Vec y) 651 { 652 FETIDPPC_ctx pc_ctx; 653 PC_IS *pcis; 654 PetscErrorCode ierr; 655 656 PetscFunctionBegin; 657 ierr = PCShellGetContext(fetipc,(void**)&pc_ctx);CHKERRQ(ierr); 658 pcis = (PC_IS*)pc_ctx->pc->data; 659 /* Application of B_Ddelta^T */ 660 ierr = VecScatterBegin(pc_ctx->l2g_lambda,x,pc_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 661 ierr = VecScatterEnd(pc_ctx->l2g_lambda,x,pc_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 662 ierr = VecSet(pcis->vec2_B,0.0);CHKERRQ(ierr); 663 ierr = MatMultTranspose(pc_ctx->B_Ddelta,pc_ctx->lambda_local,pcis->vec2_B);CHKERRQ(ierr); 664 /* Application of local Schur complement */ 665 ierr = MatMultTranspose(pc_ctx->S_j,pcis->vec2_B,pcis->vec1_B);CHKERRQ(ierr); 666 /* Application of B_Ddelta */ 667 ierr = MatMult(pc_ctx->B_Ddelta,pcis->vec1_B,pc_ctx->lambda_local);CHKERRQ(ierr); 668 ierr = VecSet(y,0.0);CHKERRQ(ierr); 669 ierr = VecScatterBegin(pc_ctx->l2g_lambda,pc_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 670 ierr = VecScatterEnd(pc_ctx->l2g_lambda,pc_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 671 PetscFunctionReturn(0); 672 } 673