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 = fetidpmat_ctx->fully_redundant; 124 125 /* Evaluate local and global number of lagrange multipliers */ 126 ierr = VecSet(pcis->vec1_N,0.0);CHKERRQ(ierr); 127 n_local_lambda = 0; 128 partial_sum = 0; 129 n_boundary_dofs = 0; 130 s = 0; 131 /* Get Vertices used to define the BDDC */ 132 n_vertices = pcbddc->n_vertices; 133 vertex_indices = pcbddc->local_primal_ref_node; 134 dual_size = pcis->n_B-n_vertices; 135 ierr = PetscMalloc1(dual_size,&dual_dofs_boundary_indices);CHKERRQ(ierr); 136 ierr = PetscMalloc1(dual_size,&aux_local_numbering_1);CHKERRQ(ierr); 137 ierr = PetscMalloc1(dual_size,&aux_local_numbering_2);CHKERRQ(ierr); 138 139 ierr = VecGetArray(pcis->vec1_N,&array);CHKERRQ(ierr); 140 for (i=0;i<pcis->n;i++){ 141 j = mat_graph->count[i]; /* RECALL: mat_graph->count[i] does not count myself */ 142 if ( j > 0 ) { 143 n_boundary_dofs++; 144 } 145 skip_node = PETSC_FALSE; 146 if ( s < n_vertices && vertex_indices[s]==i) { /* it works for a sorted set of vertices */ 147 skip_node = PETSC_TRUE; 148 s++; 149 } 150 if (j < 1) { 151 skip_node = PETSC_TRUE; 152 } 153 if ( !skip_node ) { 154 if (fully_redundant) { 155 /* fully redundant set of lagrange multipliers */ 156 n_lambda_for_dof = (j*(j+1))/2; 157 } else { 158 n_lambda_for_dof = j; 159 } 160 n_local_lambda += j; 161 /* needed to evaluate global number of lagrange multipliers */ 162 array[i]=(1.0*n_lambda_for_dof)/(j+1.0); /* already scaled for the next global sum */ 163 /* store some data needed */ 164 dual_dofs_boundary_indices[partial_sum] = n_boundary_dofs-1; 165 aux_local_numbering_1[partial_sum] = i; 166 aux_local_numbering_2[partial_sum] = n_lambda_for_dof; 167 partial_sum++; 168 } 169 } 170 ierr = VecRestoreArray(pcis->vec1_N,&array);CHKERRQ(ierr); 171 172 /* compute global ordering of lagrange multipliers and associate l2g map */ 173 ierr = ISCreateGeneral(comm,partial_sum,aux_local_numbering_1,PETSC_COPY_VALUES,&subset_n);CHKERRQ(ierr); 174 ierr = ISLocalToGlobalMappingApplyIS(pcis->mapping,subset_n,&subset);CHKERRQ(ierr); 175 ierr = ISDestroy(&subset_n);CHKERRQ(ierr); 176 ierr = ISCreateGeneral(comm,partial_sum,aux_local_numbering_2,PETSC_OWN_POINTER,&subset_mult);CHKERRQ(ierr); 177 ierr = ISRenumber(subset,subset_mult,&fetidpmat_ctx->n_lambda,&subset_n);CHKERRQ(ierr); 178 ierr = ISDestroy(&subset);CHKERRQ(ierr); 179 180 #if defined(PETSC_USE_DEBUG) 181 ierr = VecSet(pcis->vec1_global,0.0);CHKERRQ(ierr); 182 ierr = VecScatterBegin(matis->rctx,pcis->vec1_N,pcis->vec1_global,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 183 ierr = VecScatterEnd(matis->rctx,pcis->vec1_N,pcis->vec1_global,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 184 ierr = VecSum(pcis->vec1_global,&scalar_value);CHKERRQ(ierr); 185 i = (PetscInt)PetscRealPart(scalar_value); 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 #endif 188 189 /* init data for scaling factors exchange */ 190 partial_sum = 0; 191 ierr = PetscMalloc1(pcis->n_neigh,&ptrs_buffer);CHKERRQ(ierr); 192 ierr = PetscMalloc1(PetscMax(pcis->n_neigh-1,0),&send_reqs);CHKERRQ(ierr); 193 ierr = PetscMalloc1(PetscMax(pcis->n_neigh-1,0),&recv_reqs);CHKERRQ(ierr); 194 ierr = PetscMalloc1(pcis->n,&all_factors);CHKERRQ(ierr); 195 if (pcis->n_neigh > 0) 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 if (pcis->n_neigh > 0) { 223 ierr = MPI_Waitall(pcis->n_neigh-1,recv_reqs,MPI_STATUSES_IGNORE);CHKERRQ(ierr); 224 } 225 /* put values in correct places */ 226 for (i=1;i<pcis->n_neigh;i++) { 227 for (j=0;j<pcis->n_shared[i];j++) { 228 k = pcis->shared[i][j]; 229 neigh_position = 0; 230 while(mat_graph->neighbours_set[k][neigh_position] != pcis->neigh[i]) {neigh_position++;} 231 all_factors[k][neigh_position]=recv_buffer[ptrs_buffer[i-1]+j]; 232 } 233 } 234 if (pcis->n_neigh > 0) { 235 ierr = MPI_Waitall(pcis->n_neigh-1,send_reqs,MPI_STATUSES_IGNORE);CHKERRQ(ierr); 236 } 237 ierr = PetscFree(send_reqs);CHKERRQ(ierr); 238 ierr = PetscFree(recv_reqs);CHKERRQ(ierr); 239 ierr = PetscFree(send_buffer);CHKERRQ(ierr); 240 ierr = PetscFree(recv_buffer);CHKERRQ(ierr); 241 ierr = PetscFree(ptrs_buffer);CHKERRQ(ierr); 242 243 /* Compute B and B_delta (local actions) */ 244 ierr = PetscMalloc1(pcis->n_neigh,&aux_sums);CHKERRQ(ierr); 245 ierr = PetscMalloc1(n_local_lambda,&l2g_indices);CHKERRQ(ierr); 246 ierr = PetscMalloc1(n_local_lambda,&vals_B_delta);CHKERRQ(ierr); 247 ierr = PetscMalloc1(n_local_lambda,&cols_B_delta);CHKERRQ(ierr); 248 ierr = PetscMalloc1(n_local_lambda,&scaling_factors);CHKERRQ(ierr); 249 ierr = ISGetIndices(subset_n,&aux_global_numbering);CHKERRQ(ierr); 250 partial_sum=0; 251 cum = 0; 252 for (i=0;i<dual_size;i++) { 253 n_global_lambda = aux_global_numbering[cum]; 254 j = mat_graph->count[aux_local_numbering_1[i]]; 255 aux_sums[0]=0; 256 for (s=1;s<j;s++) { 257 aux_sums[s]=aux_sums[s-1]+j-s+1; 258 } 259 array = all_factors[aux_local_numbering_1[i]]; 260 n_neg_values = 0; 261 while(n_neg_values < j && mat_graph->neighbours_set[aux_local_numbering_1[i]][n_neg_values] < rank) {n_neg_values++;} 262 n_pos_values = j - n_neg_values; 263 if (fully_redundant) { 264 for (s=0;s<n_neg_values;s++) { 265 l2g_indices [partial_sum+s]=aux_sums[s]+n_neg_values-s-1+n_global_lambda; 266 cols_B_delta [partial_sum+s]=dual_dofs_boundary_indices[i]; 267 vals_B_delta [partial_sum+s]=-1.0; 268 scaling_factors[partial_sum+s]=array[s]; 269 } 270 for (s=0;s<n_pos_values;s++) { 271 l2g_indices [partial_sum+s+n_neg_values]=aux_sums[n_neg_values]+s+n_global_lambda; 272 cols_B_delta [partial_sum+s+n_neg_values]=dual_dofs_boundary_indices[i]; 273 vals_B_delta [partial_sum+s+n_neg_values]=1.0; 274 scaling_factors[partial_sum+s+n_neg_values]=array[s+n_neg_values]; 275 } 276 partial_sum += j; 277 } else { 278 /* l2g_indices and default cols and vals of B_delta */ 279 for (s=0;s<j;s++) { 280 l2g_indices [partial_sum+s]=n_global_lambda+s; 281 cols_B_delta [partial_sum+s]=dual_dofs_boundary_indices[i]; 282 vals_B_delta [partial_sum+s]=0.0; 283 } 284 /* B_delta */ 285 if ( n_neg_values > 0 ) { /* there's a rank next to me to the left */ 286 vals_B_delta [partial_sum+n_neg_values-1]=-1.0; 287 } 288 if ( n_neg_values < j ) { /* there's a rank next to me to the right */ 289 vals_B_delta [partial_sum+n_neg_values]=1.0; 290 } 291 /* scaling as in Klawonn-Widlund 1999*/ 292 for (s=0;s<n_neg_values;s++) { 293 scalar_value = 0.0; 294 for (k=0;k<s+1;k++) { 295 scalar_value += array[k]; 296 } 297 scaling_factors[partial_sum+s] = -scalar_value; 298 } 299 for (s=0;s<n_pos_values;s++) { 300 scalar_value = 0.0; 301 for (k=s+n_neg_values;k<j;k++) { 302 scalar_value += array[k]; 303 } 304 scaling_factors[partial_sum+s+n_neg_values] = scalar_value; 305 } 306 partial_sum += j; 307 } 308 cum += aux_local_numbering_2[i]; 309 } 310 ierr = ISRestoreIndices(subset_n,&aux_global_numbering);CHKERRQ(ierr); 311 ierr = ISDestroy(&subset_mult);CHKERRQ(ierr); 312 ierr = ISDestroy(&subset_n);CHKERRQ(ierr); 313 ierr = PetscFree(aux_sums);CHKERRQ(ierr); 314 ierr = PetscFree(aux_local_numbering_1);CHKERRQ(ierr); 315 ierr = PetscFree(dual_dofs_boundary_indices);CHKERRQ(ierr); 316 ierr = PetscFree(all_factors[0]);CHKERRQ(ierr); 317 ierr = PetscFree(all_factors);CHKERRQ(ierr); 318 319 /* Local to global mapping of fetidpmat */ 320 ierr = VecCreate(PETSC_COMM_SELF,&fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 321 ierr = VecSetSizes(fetidpmat_ctx->lambda_local,n_local_lambda,n_local_lambda);CHKERRQ(ierr); 322 ierr = VecSetType(fetidpmat_ctx->lambda_local,VECSEQ);CHKERRQ(ierr); 323 ierr = VecCreate(comm,&lambda_global);CHKERRQ(ierr); 324 ierr = VecSetSizes(lambda_global,PETSC_DECIDE,fetidpmat_ctx->n_lambda);CHKERRQ(ierr); 325 ierr = VecSetType(lambda_global,VECMPI);CHKERRQ(ierr); 326 ierr = ISCreateGeneral(comm,n_local_lambda,l2g_indices,PETSC_OWN_POINTER,&IS_l2g_lambda);CHKERRQ(ierr); 327 ierr = VecScatterCreate(fetidpmat_ctx->lambda_local,(IS)0,lambda_global,IS_l2g_lambda,&fetidpmat_ctx->l2g_lambda);CHKERRQ(ierr); 328 ierr = ISDestroy(&IS_l2g_lambda);CHKERRQ(ierr); 329 330 /* Create local part of B_delta */ 331 ierr = MatCreate(PETSC_COMM_SELF,&fetidpmat_ctx->B_delta);CHKERRQ(ierr); 332 ierr = MatSetSizes(fetidpmat_ctx->B_delta,n_local_lambda,pcis->n_B,n_local_lambda,pcis->n_B);CHKERRQ(ierr); 333 ierr = MatSetType(fetidpmat_ctx->B_delta,MATSEQAIJ);CHKERRQ(ierr); 334 ierr = MatSeqAIJSetPreallocation(fetidpmat_ctx->B_delta,1,NULL);CHKERRQ(ierr); 335 ierr = MatSetOption(fetidpmat_ctx->B_delta,MAT_IGNORE_ZERO_ENTRIES,PETSC_TRUE);CHKERRQ(ierr); 336 for (i=0;i<n_local_lambda;i++) { 337 ierr = MatSetValue(fetidpmat_ctx->B_delta,i,cols_B_delta[i],vals_B_delta[i],INSERT_VALUES);CHKERRQ(ierr); 338 } 339 ierr = PetscFree(vals_B_delta);CHKERRQ(ierr); 340 ierr = MatAssemblyBegin(fetidpmat_ctx->B_delta,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 341 ierr = MatAssemblyEnd (fetidpmat_ctx->B_delta,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 342 343 if (fully_redundant) { 344 ierr = MatCreate(PETSC_COMM_SELF,&ScalingMat);CHKERRQ(ierr); 345 ierr = MatSetSizes(ScalingMat,n_local_lambda,n_local_lambda,n_local_lambda,n_local_lambda);CHKERRQ(ierr); 346 ierr = MatSetType(ScalingMat,MATSEQAIJ);CHKERRQ(ierr); 347 ierr = MatSeqAIJSetPreallocation(ScalingMat,1,NULL);CHKERRQ(ierr); 348 for (i=0;i<n_local_lambda;i++) { 349 ierr = MatSetValue(ScalingMat,i,i,scaling_factors[i],INSERT_VALUES);CHKERRQ(ierr); 350 } 351 ierr = MatAssemblyBegin(ScalingMat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 352 ierr = MatAssemblyEnd (ScalingMat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 353 ierr = MatMatMult(ScalingMat,fetidpmat_ctx->B_delta,MAT_INITIAL_MATRIX,PETSC_DEFAULT,&fetidpmat_ctx->B_Ddelta);CHKERRQ(ierr); 354 ierr = MatDestroy(&ScalingMat);CHKERRQ(ierr); 355 } else { 356 ierr = MatCreate(PETSC_COMM_SELF,&fetidpmat_ctx->B_Ddelta);CHKERRQ(ierr); 357 ierr = MatSetSizes(fetidpmat_ctx->B_Ddelta,n_local_lambda,pcis->n_B,n_local_lambda,pcis->n_B);CHKERRQ(ierr); 358 ierr = MatSetType(fetidpmat_ctx->B_Ddelta,MATSEQAIJ);CHKERRQ(ierr); 359 ierr = MatSeqAIJSetPreallocation(fetidpmat_ctx->B_Ddelta,1,NULL);CHKERRQ(ierr); 360 for (i=0;i<n_local_lambda;i++) { 361 ierr = MatSetValue(fetidpmat_ctx->B_Ddelta,i,cols_B_delta[i],scaling_factors[i],INSERT_VALUES);CHKERRQ(ierr); 362 } 363 ierr = MatAssemblyBegin(fetidpmat_ctx->B_Ddelta,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 364 ierr = MatAssemblyEnd (fetidpmat_ctx->B_Ddelta,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 365 } 366 ierr = PetscFree(scaling_factors);CHKERRQ(ierr); 367 ierr = PetscFree(cols_B_delta);CHKERRQ(ierr); 368 369 /* Create some vectors needed by fetidp */ 370 ierr = VecDuplicate(pcis->vec1_B,&fetidpmat_ctx->temp_solution_B);CHKERRQ(ierr); 371 ierr = VecDuplicate(pcis->vec1_D,&fetidpmat_ctx->temp_solution_D);CHKERRQ(ierr); 372 373 test_fetidp = PETSC_FALSE; 374 ierr = PetscOptionsGetBool(NULL,NULL,"-fetidp_check",&test_fetidp,NULL);CHKERRQ(ierr); 375 376 if (test_fetidp && !pcbddc->use_deluxe_scaling) { 377 378 PetscReal real_value; 379 380 ierr = PetscViewerASCIIGetStdout(comm,&viewer);CHKERRQ(ierr); 381 ierr = PetscViewerASCIIPushSynchronized(viewer);CHKERRQ(ierr); 382 ierr = PetscViewerASCIIPrintf(viewer,"----------FETI_DP TESTS--------------\n");CHKERRQ(ierr); 383 ierr = PetscViewerASCIIPrintf(viewer,"All tests should return zero!\n");CHKERRQ(ierr); 384 ierr = PetscViewerASCIIPrintf(viewer,"FETIDP MAT context in the ");CHKERRQ(ierr); 385 if (fully_redundant) { 386 ierr = PetscViewerASCIIPrintf(viewer,"fully redundant case for lagrange multipliers.\n");CHKERRQ(ierr); 387 } else { 388 ierr = PetscViewerASCIIPrintf(viewer,"Non-fully redundant case for lagrange multiplier.\n");CHKERRQ(ierr); 389 } 390 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 391 392 /******************************************************************/ 393 /* TEST A/B: Test numbering of global lambda dofs */ 394 /******************************************************************/ 395 396 ierr = VecDuplicate(fetidpmat_ctx->lambda_local,&test_vec);CHKERRQ(ierr); 397 ierr = VecSet(lambda_global,1.0);CHKERRQ(ierr); 398 ierr = VecSet(test_vec,1.0);CHKERRQ(ierr); 399 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 400 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 401 scalar_value = -1.0; 402 ierr = VecAXPY(test_vec,scalar_value,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 403 ierr = VecNorm(test_vec,NORM_INFINITY,&real_value);CHKERRQ(ierr); 404 ierr = VecDestroy(&test_vec);CHKERRQ(ierr); 405 ierr = PetscViewerASCIISynchronizedPrintf(viewer,"A[%04d]: CHECK glob to loc: % 1.14e\n",rank,real_value);CHKERRQ(ierr); 406 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 407 if (fully_redundant) { 408 ierr = VecSet(lambda_global,0.0);CHKERRQ(ierr); 409 ierr = VecSet(fetidpmat_ctx->lambda_local,0.5);CHKERRQ(ierr); 410 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 411 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 412 ierr = VecSum(lambda_global,&scalar_value);CHKERRQ(ierr); 413 ierr = PetscViewerASCIISynchronizedPrintf(viewer,"B[%04d]: CHECK loc to glob: % 1.14e\n",rank,PetscRealPart(scalar_value)-fetidpmat_ctx->n_lambda);CHKERRQ(ierr); 414 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 415 } 416 417 /******************************************************************/ 418 /* TEST C: It should holds B_delta*w=0, w\in\widehat{W} */ 419 /* This is the meaning of the B matrix */ 420 /******************************************************************/ 421 422 ierr = VecSetRandom(pcis->vec1_N,NULL);CHKERRQ(ierr); 423 ierr = VecSet(pcis->vec1_global,0.0);CHKERRQ(ierr); 424 ierr = VecScatterBegin(matis->rctx,pcis->vec1_N,pcis->vec1_global,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 425 ierr = VecScatterEnd(matis->rctx,pcis->vec1_N,pcis->vec1_global,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 426 ierr = VecScatterBegin(matis->rctx,pcis->vec1_global,pcis->vec1_N,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 427 ierr = VecScatterEnd(matis->rctx,pcis->vec1_global,pcis->vec1_N,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 428 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 429 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 430 /* Action of B_delta */ 431 ierr = MatMult(fetidpmat_ctx->B_delta,pcis->vec1_B,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 432 ierr = VecSet(lambda_global,0.0);CHKERRQ(ierr); 433 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 434 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 435 ierr = VecNorm(lambda_global,NORM_INFINITY,&real_value);CHKERRQ(ierr); 436 ierr = PetscViewerASCIIPrintf(viewer,"C[coll]: CHECK infty norm of B_delta*w (w continuous): % 1.14e\n",real_value);CHKERRQ(ierr); 437 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 438 439 /******************************************************************/ 440 /* TEST D: It should holds E_Dw = w - P_Dw w\in\widetilde{W} */ 441 /* E_D = R_D^TR */ 442 /* P_D = B_{D,delta}^T B_{delta} */ 443 /* eq.44 Mandel Tezaur and Dohrmann 2005 */ 444 /******************************************************************/ 445 446 /* compute a random vector in \widetilde{W} */ 447 ierr = VecSetRandom(pcis->vec1_N,NULL);CHKERRQ(ierr); 448 scalar_value = 0.0; /* set zero at vertices */ 449 ierr = VecGetArray(pcis->vec1_N,&array);CHKERRQ(ierr); 450 for (i=0;i<n_vertices;i++) { array[vertex_indices[i]]=scalar_value; } 451 ierr = VecRestoreArray(pcis->vec1_N,&array);CHKERRQ(ierr); 452 /* store w for final comparison */ 453 ierr = VecDuplicate(pcis->vec1_B,&test_vec);CHKERRQ(ierr); 454 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,test_vec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 455 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,test_vec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 456 457 /* Jump operator P_D : results stored in pcis->vec1_B */ 458 459 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 460 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 461 /* Action of B_delta */ 462 ierr = MatMult(fetidpmat_ctx->B_delta,pcis->vec1_B,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 463 ierr = VecSet(lambda_global,0.0);CHKERRQ(ierr); 464 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 465 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 466 /* Action of B_Ddelta^T */ 467 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 468 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 469 ierr = MatMultTranspose(fetidpmat_ctx->B_Ddelta,fetidpmat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 470 471 /* Average operator E_D : results stored in pcis->vec2_B */ 472 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,pcis->vec2_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 473 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,pcis->vec2_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 474 ierr = PCBDDCScalingExtension(fetidpmat_ctx->pc,pcis->vec2_B,pcis->vec1_global);CHKERRQ(ierr); 475 ierr = VecScatterBegin(pcis->global_to_B,pcis->vec1_global,pcis->vec2_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 476 ierr = VecScatterEnd (pcis->global_to_B,pcis->vec1_global,pcis->vec2_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 477 478 /* test E_D=I-P_D */ 479 scalar_value = 1.0; 480 ierr = VecAXPY(pcis->vec1_B,scalar_value,pcis->vec2_B);CHKERRQ(ierr); 481 scalar_value = -1.0; 482 ierr = VecAXPY(pcis->vec1_B,scalar_value,test_vec);CHKERRQ(ierr); 483 ierr = VecNorm(pcis->vec1_B,NORM_INFINITY,&real_value);CHKERRQ(ierr); 484 ierr = VecDestroy(&test_vec);CHKERRQ(ierr); 485 ierr = PetscViewerASCIISynchronizedPrintf(viewer,"D[%04d] CHECK infty norm of E_D + P_D - I: % 1.14e\n",rank,real_value);CHKERRQ(ierr); 486 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 487 488 /******************************************************************/ 489 /* TEST E: It should holds R_D^TP_Dw=0 w\in\widetilde{W} */ 490 /* eq.48 Mandel Tezaur and Dohrmann 2005 */ 491 /******************************************************************/ 492 493 ierr = VecSetRandom(pcis->vec1_N,NULL);CHKERRQ(ierr); 494 ierr = VecGetArray(pcis->vec1_N,&array);CHKERRQ(ierr); 495 scalar_value = 0.0; /* set zero at vertices */ 496 for (i=0;i<n_vertices;i++) { array[vertex_indices[i]]=scalar_value; } 497 ierr = VecRestoreArray(pcis->vec1_N,&array);CHKERRQ(ierr); 498 499 /* Jump operator P_D : results stored in pcis->vec1_B */ 500 501 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 502 ierr = VecScatterEnd (pcis->N_to_B,pcis->vec1_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 503 /* Action of B_delta */ 504 ierr = MatMult(fetidpmat_ctx->B_delta,pcis->vec1_B,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 505 ierr = VecSet(lambda_global,0.0);CHKERRQ(ierr); 506 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 507 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,lambda_global,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 508 /* Action of B_Ddelta^T */ 509 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 510 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 511 ierr = MatMultTranspose(fetidpmat_ctx->B_Ddelta,fetidpmat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 512 /* scaling */ 513 ierr = PCBDDCScalingExtension(fetidpmat_ctx->pc,pcis->vec1_B,pcis->vec1_global);CHKERRQ(ierr); 514 ierr = VecNorm(pcis->vec1_global,NORM_INFINITY,&real_value);CHKERRQ(ierr); 515 ierr = PetscViewerASCIIPrintf(viewer,"E[coll]: CHECK infty norm of R^T_D P_D: % 1.14e\n",real_value);CHKERRQ(ierr); 516 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 517 518 if (!fully_redundant) { 519 /******************************************************************/ 520 /* TEST F: It should holds B_{delta}B^T_{D,delta}=I */ 521 /* Corollary thm 14 Mandel Tezaur and Dohrmann 2005 */ 522 /******************************************************************/ 523 ierr = VecDuplicate(lambda_global,&test_vec);CHKERRQ(ierr); 524 ierr = VecSetRandom(lambda_global,NULL);CHKERRQ(ierr); 525 /* Action of B_Ddelta^T */ 526 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 527 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,lambda_global,fetidpmat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 528 ierr = MatMultTranspose(fetidpmat_ctx->B_Ddelta,fetidpmat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 529 /* Action of B_delta */ 530 ierr = MatMult(fetidpmat_ctx->B_delta,pcis->vec1_B,fetidpmat_ctx->lambda_local);CHKERRQ(ierr); 531 ierr = VecSet(test_vec,0.0);CHKERRQ(ierr); 532 ierr = VecScatterBegin(fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,test_vec,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 533 ierr = VecScatterEnd (fetidpmat_ctx->l2g_lambda,fetidpmat_ctx->lambda_local,test_vec,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 534 scalar_value = -1.0; 535 ierr = VecAXPY(lambda_global,scalar_value,test_vec);CHKERRQ(ierr); 536 ierr = VecNorm(lambda_global,NORM_INFINITY,&real_value);CHKERRQ(ierr); 537 ierr = PetscViewerASCIIPrintf(viewer,"E[coll]: CHECK infty norm of P^T_D - I: % 1.14e\n",real_value);CHKERRQ(ierr); 538 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 539 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 540 ierr = VecDestroy(&test_vec);CHKERRQ(ierr); 541 } 542 } 543 /* final cleanup */ 544 ierr = VecDestroy(&lambda_global);CHKERRQ(ierr); 545 546 PetscFunctionReturn(0); 547 } 548 549 #undef __FUNCT__ 550 #define __FUNCT__ "PCBDDCSetupFETIDPPCContext" 551 PetscErrorCode PCBDDCSetupFETIDPPCContext(Mat fetimat, FETIDPPC_ctx fetidppc_ctx) 552 { 553 FETIDPMat_ctx mat_ctx; 554 PC_IS *pcis; 555 PetscBool lumped = PETSC_FALSE; 556 PetscErrorCode ierr; 557 558 PetscFunctionBegin; 559 ierr = MatShellGetContext(fetimat,(void**)&mat_ctx);CHKERRQ(ierr); 560 /* get references from objects created when setting up feti mat context */ 561 ierr = PetscObjectReference((PetscObject)mat_ctx->lambda_local);CHKERRQ(ierr); 562 fetidppc_ctx->lambda_local = mat_ctx->lambda_local; 563 ierr = PetscObjectReference((PetscObject)mat_ctx->B_Ddelta);CHKERRQ(ierr); 564 fetidppc_ctx->B_Ddelta = mat_ctx->B_Ddelta; 565 ierr = PetscObjectReference((PetscObject)mat_ctx->l2g_lambda);CHKERRQ(ierr); 566 fetidppc_ctx->l2g_lambda = mat_ctx->l2g_lambda; 567 /* create preconditioner */ 568 pcis = (PC_IS*)fetidppc_ctx->pc->data; 569 /* Dirichlet preconditioner */ 570 ierr = PetscOptionsGetBool(NULL,NULL,"-fetidp_lumped",&lumped,NULL);CHKERRQ(ierr); 571 if (!lumped) { 572 ierr = MatCreateSchurComplement(pcis->A_II,pcis->A_II,pcis->A_IB,pcis->A_BI,pcis->A_BB,&fetidppc_ctx->S_j);CHKERRQ(ierr); 573 ierr = MatSchurComplementSetKSP(fetidppc_ctx->S_j,pcis->ksp_D);CHKERRQ(ierr); 574 } else { 575 ierr = PetscObjectReference((PetscObject)pcis->A_BB);CHKERRQ(ierr); 576 fetidppc_ctx->S_j = pcis->A_BB; 577 } 578 PetscFunctionReturn(0); 579 } 580 581 #undef __FUNCT__ 582 #define __FUNCT__ "FETIDPMatMult" 583 PetscErrorCode FETIDPMatMult(Mat fetimat, Vec x, Vec y) 584 { 585 FETIDPMat_ctx mat_ctx; 586 PC_BDDC *pcbddc; 587 PC_IS *pcis; 588 PetscErrorCode ierr; 589 590 PetscFunctionBegin; 591 ierr = MatShellGetContext(fetimat,(void**)&mat_ctx);CHKERRQ(ierr); 592 pcis = (PC_IS*)mat_ctx->pc->data; 593 pcbddc = (PC_BDDC*)mat_ctx->pc->data; 594 /* Application of B_delta^T */ 595 ierr = VecScatterBegin(mat_ctx->l2g_lambda,x,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 596 ierr = VecScatterEnd(mat_ctx->l2g_lambda,x,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 597 ierr = MatMultTranspose(mat_ctx->B_delta,mat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 598 /* Application of \widetilde{S}^-1 */ 599 ierr = VecSet(pcis->vec1_D,0.0);CHKERRQ(ierr); 600 ierr = PetscMemzero(pcbddc->benign_p0,pcbddc->benign_n*sizeof(PetscScalar));CHKERRQ(ierr); 601 ierr = PCBDDCApplyInterfacePreconditioner(mat_ctx->pc,PETSC_FALSE);CHKERRQ(ierr); 602 ierr = PetscMemzero(pcbddc->benign_p0,pcbddc->benign_n*sizeof(PetscScalar));CHKERRQ(ierr); 603 /* Application of B_delta */ 604 ierr = MatMult(mat_ctx->B_delta,pcis->vec1_B,mat_ctx->lambda_local);CHKERRQ(ierr); 605 ierr = VecSet(y,0.0);CHKERRQ(ierr); 606 ierr = VecScatterBegin(mat_ctx->l2g_lambda,mat_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 607 ierr = VecScatterEnd(mat_ctx->l2g_lambda,mat_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 608 PetscFunctionReturn(0); 609 } 610 611 #undef __FUNCT__ 612 #define __FUNCT__ "FETIDPMatMultTranspose" 613 PetscErrorCode FETIDPMatMultTranspose(Mat fetimat, Vec x, Vec y) 614 { 615 FETIDPMat_ctx mat_ctx; 616 PC_IS *pcis; 617 PetscErrorCode ierr; 618 619 PetscFunctionBegin; 620 ierr = MatShellGetContext(fetimat,(void**)&mat_ctx);CHKERRQ(ierr); 621 pcis = (PC_IS*)mat_ctx->pc->data; 622 /* Application of B_delta^T */ 623 ierr = VecScatterBegin(mat_ctx->l2g_lambda,x,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 624 ierr = VecScatterEnd(mat_ctx->l2g_lambda,x,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 625 ierr = MatMultTranspose(mat_ctx->B_delta,mat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 626 /* Application of \widetilde{S}^-1 */ 627 ierr = VecSet(pcis->vec1_D,0.0);CHKERRQ(ierr); 628 ierr = PCBDDCApplyInterfacePreconditioner(mat_ctx->pc,PETSC_TRUE);CHKERRQ(ierr); 629 /* Application of B_delta */ 630 ierr = MatMult(mat_ctx->B_delta,pcis->vec1_B,mat_ctx->lambda_local);CHKERRQ(ierr); 631 ierr = VecSet(y,0.0);CHKERRQ(ierr); 632 ierr = VecScatterBegin(mat_ctx->l2g_lambda,mat_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 633 ierr = VecScatterEnd(mat_ctx->l2g_lambda,mat_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 634 PetscFunctionReturn(0); 635 } 636 637 #undef __FUNCT__ 638 #define __FUNCT__ "FETIDPPCApply" 639 PetscErrorCode FETIDPPCApply(PC fetipc, Vec x, Vec y) 640 { 641 FETIDPPC_ctx pc_ctx; 642 PC_IS *pcis; 643 PetscErrorCode ierr; 644 645 PetscFunctionBegin; 646 ierr = PCShellGetContext(fetipc,(void**)&pc_ctx);CHKERRQ(ierr); 647 pcis = (PC_IS*)pc_ctx->pc->data; 648 /* Application of B_Ddelta^T */ 649 ierr = VecScatterBegin(pc_ctx->l2g_lambda,x,pc_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 650 ierr = VecScatterEnd(pc_ctx->l2g_lambda,x,pc_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 651 ierr = VecSet(pcis->vec2_B,0.0);CHKERRQ(ierr); 652 ierr = MatMultTranspose(pc_ctx->B_Ddelta,pc_ctx->lambda_local,pcis->vec2_B);CHKERRQ(ierr); 653 /* Application of local Schur complement */ 654 ierr = MatMult(pc_ctx->S_j,pcis->vec2_B,pcis->vec1_B);CHKERRQ(ierr); 655 /* Application of B_Ddelta */ 656 ierr = MatMult(pc_ctx->B_Ddelta,pcis->vec1_B,pc_ctx->lambda_local);CHKERRQ(ierr); 657 ierr = VecSet(y,0.0);CHKERRQ(ierr); 658 ierr = VecScatterBegin(pc_ctx->l2g_lambda,pc_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 659 ierr = VecScatterEnd(pc_ctx->l2g_lambda,pc_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 660 PetscFunctionReturn(0); 661 } 662 663 #undef __FUNCT__ 664 #define __FUNCT__ "FETIDPPCApplyTranspose" 665 PetscErrorCode FETIDPPCApplyTranspose(PC fetipc, Vec x, Vec y) 666 { 667 FETIDPPC_ctx pc_ctx; 668 PC_IS *pcis; 669 PetscErrorCode ierr; 670 671 PetscFunctionBegin; 672 ierr = PCShellGetContext(fetipc,(void**)&pc_ctx);CHKERRQ(ierr); 673 pcis = (PC_IS*)pc_ctx->pc->data; 674 /* Application of B_Ddelta^T */ 675 ierr = VecScatterBegin(pc_ctx->l2g_lambda,x,pc_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 676 ierr = VecScatterEnd(pc_ctx->l2g_lambda,x,pc_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 677 ierr = VecSet(pcis->vec2_B,0.0);CHKERRQ(ierr); 678 ierr = MatMultTranspose(pc_ctx->B_Ddelta,pc_ctx->lambda_local,pcis->vec2_B);CHKERRQ(ierr); 679 /* Application of local Schur complement */ 680 ierr = MatMultTranspose(pc_ctx->S_j,pcis->vec2_B,pcis->vec1_B);CHKERRQ(ierr); 681 /* Application of B_Ddelta */ 682 ierr = MatMult(pc_ctx->B_Ddelta,pcis->vec1_B,pc_ctx->lambda_local);CHKERRQ(ierr); 683 ierr = VecSet(y,0.0);CHKERRQ(ierr); 684 ierr = VecScatterBegin(pc_ctx->l2g_lambda,pc_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 685 ierr = VecScatterEnd(pc_ctx->l2g_lambda,pc_ctx->lambda_local,y,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 686 PetscFunctionReturn(0); 687 } 688