1 /* TODOLIST 2 3 Solvers 4 - Add support for cholesky for coarse solver (similar to local solvers) 5 - Propagate ksp prefixes for solvers to mat objects? 6 7 User interface 8 - ** DM attached to pc? 9 10 Debugging output 11 - * Better management of verbosity levels of debugging output 12 13 Extra 14 - *** Is it possible to work with PCBDDCGraph on boundary indices only (less memory consumed)? 15 - BDDC with MG framework? 16 17 MATIS related operations contained in BDDC code 18 - Provide general case for subassembling 19 20 */ 21 22 #include <../src/ksp/pc/impls/bddc/bddc.h> /*I "petscpc.h" I*/ /* includes for fortran wrappers */ 23 #include <../src/ksp/pc/impls/bddc/bddcprivate.h> 24 #include <petscblaslapack.h> 25 26 /* temporarily declare it */ 27 PetscErrorCode PCApply_BDDC(PC,Vec,Vec); 28 29 #undef __FUNCT__ 30 #define __FUNCT__ "PCSetFromOptions_BDDC" 31 PetscErrorCode PCSetFromOptions_BDDC(PetscOptionItems *PetscOptionsObject,PC pc) 32 { 33 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 34 PetscErrorCode ierr; 35 36 PetscFunctionBegin; 37 ierr = PetscOptionsHead(PetscOptionsObject,"BDDC options");CHKERRQ(ierr); 38 /* Verbose debugging */ 39 ierr = PetscOptionsBool("-pc_bddc_dirichlet_approximate","Inform PCBDDC that we are using approximate Dirichlet solvers","none",pcbddc->NullSpace_corr[0],&pcbddc->NullSpace_corr[0],NULL);CHKERRQ(ierr); 40 ierr = PetscOptionsBool("-pc_bddc_dirichlet_approximate_scale","Inform PCBDDC that we need to scale the Dirichlet solve","none",pcbddc->NullSpace_corr[1],&pcbddc->NullSpace_corr[1],NULL);CHKERRQ(ierr); 41 ierr = PetscOptionsBool("-pc_bddc_neumann_approximate","Inform PCBDDC that we are using approximate Neumann solvers","none",pcbddc->NullSpace_corr[2],&pcbddc->NullSpace_corr[2],NULL);CHKERRQ(ierr); 42 ierr = PetscOptionsBool("-pc_bddc_neumann_approximate_scale","Inform PCBDDC that we need to scale the Neumann solve","none",pcbddc->NullSpace_corr[3],&pcbddc->NullSpace_corr[3],NULL);CHKERRQ(ierr); 43 ierr = PetscOptionsInt("-pc_bddc_check_level","Verbose output for PCBDDC (intended for debug)","none",pcbddc->dbg_flag,&pcbddc->dbg_flag,NULL);CHKERRQ(ierr); 44 /* Primal space customization */ 45 ierr = PetscOptionsBool("-pc_bddc_use_local_mat_graph","Use or not adjacency graph of local mat for interface analysis","none",pcbddc->use_local_adj,&pcbddc->use_local_adj,NULL);CHKERRQ(ierr); 46 ierr = PetscOptionsBool("-pc_bddc_use_vertices","Use or not corner dofs in coarse space","none",pcbddc->use_vertices,&pcbddc->use_vertices,NULL);CHKERRQ(ierr); 47 ierr = PetscOptionsBool("-pc_bddc_use_edges","Use or not edge constraints in coarse space","none",pcbddc->use_edges,&pcbddc->use_edges,NULL);CHKERRQ(ierr); 48 ierr = PetscOptionsBool("-pc_bddc_use_faces","Use or not face constraints in coarse space","none",pcbddc->use_faces,&pcbddc->use_faces,NULL);CHKERRQ(ierr); 49 ierr = PetscOptionsInt("-pc_bddc_vertex_size","Connected components smaller or equal to vertex size will be considered as primal vertices","none",pcbddc->vertex_size,&pcbddc->vertex_size,NULL);CHKERRQ(ierr); 50 ierr = PetscOptionsBool("-pc_bddc_use_true_nnsp","Use near null space attached to the matrix without modifications","none",pcbddc->use_nnsp_true,&pcbddc->use_nnsp_true,NULL);CHKERRQ(ierr); 51 ierr = PetscOptionsBool("-pc_bddc_use_qr_single","Use QR factorization for single constraints on cc (QR is always used when multiple constraints are present)","none",pcbddc->use_qr_single,&pcbddc->use_qr_single,NULL);CHKERRQ(ierr); 52 /* Change of basis */ 53 ierr = PetscOptionsBool("-pc_bddc_use_change_of_basis","Use or not internal change of basis on local edge nodes","none",pcbddc->use_change_of_basis,&pcbddc->use_change_of_basis,NULL);CHKERRQ(ierr); 54 ierr = PetscOptionsBool("-pc_bddc_use_change_on_faces","Use or not internal change of basis on local face nodes","none",pcbddc->use_change_on_faces,&pcbddc->use_change_on_faces,NULL);CHKERRQ(ierr); 55 if (!pcbddc->use_change_of_basis) { 56 pcbddc->use_change_on_faces = PETSC_FALSE; 57 } 58 /* Switch between M_2 (default) and M_3 preconditioners (as defined by C. Dohrmann in the ref. article) */ 59 ierr = PetscOptionsBool("-pc_bddc_switch_static","Switch on static condensation ops around the interface preconditioner","none",pcbddc->switch_static,&pcbddc->switch_static,NULL);CHKERRQ(ierr); 60 ierr = PetscOptionsInt("-pc_bddc_coarse_eqs_per_proc","Number of equations per process for coarse problem redistribution (significant only at the coarsest level)","none",pcbddc->coarse_eqs_per_proc,&pcbddc->coarse_eqs_per_proc,NULL);CHKERRQ(ierr); 61 ierr = PetscOptionsInt("-pc_bddc_coarsening_ratio","Set coarsening ratio used in multilevel coarsening","none",pcbddc->coarsening_ratio,&pcbddc->coarsening_ratio,NULL);CHKERRQ(ierr); 62 ierr = PetscOptionsInt("-pc_bddc_levels","Set maximum number of levels for multilevel","none",pcbddc->max_levels,&pcbddc->max_levels,NULL);CHKERRQ(ierr); 63 ierr = PetscOptionsBool("-pc_bddc_use_coarse_estimates","Use estimated eigenvalues for coarse problem","none",pcbddc->use_coarse_estimates,&pcbddc->use_coarse_estimates,NULL);CHKERRQ(ierr); 64 ierr = PetscOptionsBool("-pc_bddc_use_deluxe_scaling","Use deluxe scaling for BDDC","none",pcbddc->use_deluxe_scaling,&pcbddc->use_deluxe_scaling,NULL);CHKERRQ(ierr); 65 ierr = PetscOptionsBool("-pc_bddc_schur_rebuild","Whether or not the interface graph for Schur principal minors has to be rebuilt (i.e. define the interface without any adjacency)","none",pcbddc->sub_schurs_rebuild,&pcbddc->sub_schurs_rebuild,NULL);CHKERRQ(ierr); 66 ierr = PetscOptionsInt("-pc_bddc_schur_layers","Number of dofs' layers for the computation of principal minors (i.e. -1 uses all dofs)","none",pcbddc->sub_schurs_layers,&pcbddc->sub_schurs_layers,NULL);CHKERRQ(ierr); 67 ierr = PetscOptionsBool("-pc_bddc_schur_use_useradj","Whether or not the CSR graph specified by the user should be used for computing successive layers (default is to use adj of local mat)","none",pcbddc->sub_schurs_use_useradj,&pcbddc->sub_schurs_use_useradj,NULL);CHKERRQ(ierr); 68 ierr = PetscOptionsBool("-pc_bddc_schur_exact","Whether or not to use the exact Schur complement instead of the reduced one (which excludes size 1 cc)","none",pcbddc->sub_schurs_exact_schur,&pcbddc->sub_schurs_exact_schur,NULL);CHKERRQ(ierr); 69 ierr = PetscOptionsBool("-pc_bddc_deluxe_zerorows","Zero rows and columns of deluxe operators associated with primal dofs","none",pcbddc->deluxe_zerorows,&pcbddc->deluxe_zerorows,NULL);CHKERRQ(ierr); 70 ierr = PetscOptionsBool("-pc_bddc_adaptive_userdefined","Use user-defined constraints (should be attached via MatSetNearNullSpace to pmat) in addition to those adaptively generated","none",pcbddc->adaptive_userdefined,&pcbddc->adaptive_userdefined,NULL);CHKERRQ(ierr); 71 ierr = PetscOptionsReal("-pc_bddc_adaptive_threshold","Threshold to be used for adaptive selection of constraints","none",pcbddc->adaptive_threshold,&pcbddc->adaptive_threshold,NULL);CHKERRQ(ierr); 72 ierr = PetscOptionsInt("-pc_bddc_adaptive_nmin","Minimum number of constraints per connected components","none",pcbddc->adaptive_nmin,&pcbddc->adaptive_nmin,NULL);CHKERRQ(ierr); 73 ierr = PetscOptionsInt("-pc_bddc_adaptive_nmax","Maximum number of constraints per connected components","none",pcbddc->adaptive_nmax,&pcbddc->adaptive_nmax,NULL);CHKERRQ(ierr); 74 ierr = PetscOptionsBool("-pc_bddc_symmetric","Symmetric computation of primal basis functions","none",pcbddc->symmetric_primal,&pcbddc->symmetric_primal,NULL);CHKERRQ(ierr); 75 ierr = PetscOptionsInt("-pc_bddc_coarse_adj","Number of processors where to map the coarse adjacency list","none",pcbddc->coarse_adj_red,&pcbddc->coarse_adj_red,NULL);CHKERRQ(ierr); 76 ierr = PetscOptionsBool("-pc_bddc_benign_trick","Apply the benign subspace trick to saddle point problems with discontinuous pressures","none",pcbddc->benign_saddle_point,&pcbddc->benign_saddle_point,NULL);CHKERRQ(ierr); 77 ierr = PetscOptionsBool("-pc_bddc_benign_change","Compute the pressure change of basis explicitly","none",pcbddc->benign_change_explicit,&pcbddc->benign_change_explicit,NULL);CHKERRQ(ierr); 78 ierr = PetscOptionsBool("-pc_bddc_benign_compute_correction","Compute the benign correction during PreSolve","none",pcbddc->benign_compute_correction,&pcbddc->benign_compute_correction,NULL);CHKERRQ(ierr); 79 ierr = PetscOptionsBool("-pc_bddc_nonetflux","Automatic computation of no-net-flux quadrature weights","none",pcbddc->compute_nonetflux,&pcbddc->compute_nonetflux,NULL);CHKERRQ(ierr); 80 ierr = PetscOptionsBool("-pc_bddc_detect_disconnected","Detects disconnected subdomains","none",pcbddc->detect_disconnected,&pcbddc->detect_disconnected,NULL);CHKERRQ(ierr); 81 ierr = PetscOptionsBool("-pc_bddc_eliminate_dirichlet","Whether or not we want to eliminate dirichlet dofs during presolve","none",pcbddc->eliminate_dirdofs,&pcbddc->eliminate_dirdofs,NULL);CHKERRQ(ierr); 82 ierr = PetscOptionsTail();CHKERRQ(ierr); 83 PetscFunctionReturn(0); 84 } 85 86 #undef __FUNCT__ 87 #define __FUNCT__ "PCView_BDDC" 88 static PetscErrorCode PCView_BDDC(PC pc,PetscViewer viewer) 89 { 90 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 91 PC_IS *pcis = (PC_IS*)pc->data; 92 PetscErrorCode ierr; 93 PetscBool isascii,isstring; 94 PetscSubcomm subcomm; 95 PetscViewer subviewer; 96 97 PetscFunctionBegin; 98 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii);CHKERRQ(ierr); 99 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERSTRING,&isstring);CHKERRQ(ierr); 100 /* Nothing printed for the String viewer */ 101 /* ASCII viewer */ 102 if (isascii) { 103 PetscMPIInt color,rank,size; 104 PetscInt64 loc[6],gsum[5],gmax[5],gmin[5],totbenign; 105 PetscScalar interface_size; 106 PetscReal ratio1=0.,ratio2=0.; 107 Vec counter; 108 109 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use verbose output: %d\n",pcbddc->dbg_flag);CHKERRQ(ierr); 110 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use user-defined CSR: %d\n",!!pcbddc->mat_graph->nvtxs_csr);CHKERRQ(ierr); 111 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use local mat graph: %d\n",pcbddc->use_local_adj);CHKERRQ(ierr); 112 if (pcbddc->mat_graph->twodim) { 113 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Connectivity graph topological dimension: 2\n");CHKERRQ(ierr); 114 } else { 115 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Connectivity graph topological dimension: 3\n");CHKERRQ(ierr); 116 } 117 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use vertices: %d (vertex size %d)\n",pcbddc->use_vertices,pcbddc->vertex_size);CHKERRQ(ierr); 118 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use edges: %d\n",pcbddc->use_edges);CHKERRQ(ierr); 119 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use faces: %d\n",pcbddc->use_faces);CHKERRQ(ierr); 120 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use true near null space: %d\n",pcbddc->use_nnsp_true);CHKERRQ(ierr); 121 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use QR for single constraints on cc: %d\n",pcbddc->use_qr_single);CHKERRQ(ierr); 122 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use change of basis on local edge nodes: %d\n",pcbddc->use_change_of_basis);CHKERRQ(ierr); 123 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use change of basis on local face nodes: %d\n",pcbddc->use_change_on_faces);CHKERRQ(ierr); 124 ierr = PetscViewerASCIIPrintf(viewer," BDDC: User defined change of basis matrix: %d\n",!!pcbddc->user_ChangeOfBasisMatrix);CHKERRQ(ierr); 125 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Has change of basis matrix: %d\n",!!pcbddc->ChangeOfBasisMatrix);CHKERRQ(ierr); 126 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Eliminate dirichlet boundary dofs: %d\n",pcbddc->eliminate_dirdofs);CHKERRQ(ierr); 127 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Switch on static condensation ops around the interface preconditioner: %d\n",pcbddc->switch_static);CHKERRQ(ierr); 128 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use exact dirichlet trick: %d\n",pcbddc->use_exact_dirichlet_trick);CHKERRQ(ierr); 129 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Multilevel max levels: %d\n",pcbddc->max_levels);CHKERRQ(ierr); 130 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Multilevel coarsening ratio: %d\n",pcbddc->coarsening_ratio);CHKERRQ(ierr); 131 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use estimated eigs for coarse problem: %d\n",pcbddc->use_coarse_estimates);CHKERRQ(ierr); 132 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use deluxe scaling: %d\n",pcbddc->use_deluxe_scaling);CHKERRQ(ierr); 133 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use deluxe zerorows: %d\n",pcbddc->deluxe_zerorows);CHKERRQ(ierr); 134 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Rebuild interface graph for Schur principal minors: %d\n",pcbddc->sub_schurs_rebuild);CHKERRQ(ierr); 135 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Number of dofs' layers for the computation of principal minors: %d\n",pcbddc->sub_schurs_layers);CHKERRQ(ierr); 136 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Use user CSR graph to compute successive layers: %d\n",pcbddc->sub_schurs_use_useradj);CHKERRQ(ierr); 137 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Adaptive constraint selection threshold (active %d, userdefined %d): %g\n",pcbddc->adaptive_threshold,pcbddc->adaptive_selection,pcbddc->adaptive_userdefined);CHKERRQ(ierr); 138 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Min constraints / connected component: %d\n",pcbddc->adaptive_nmin);CHKERRQ(ierr); 139 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Max constraints / connected component: %d\n",pcbddc->adaptive_nmax);CHKERRQ(ierr); 140 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Invert exact Schur complement for adaptive selection: %d\n",pcbddc->sub_schurs_exact_schur);CHKERRQ(ierr); 141 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Symmetric computation of primal basis functions: %d\n",pcbddc->symmetric_primal);CHKERRQ(ierr); 142 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Num. Procs. to map coarse adjacency list: %d\n",pcbddc->coarse_adj_red);CHKERRQ(ierr); 143 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Coarse eqs per proc (significant at the coarsest level): %d\n",pcbddc->coarse_eqs_per_proc);CHKERRQ(ierr); 144 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Detect disconnected: %d\n",pcbddc->detect_disconnected);CHKERRQ(ierr); 145 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Benign subspace trick: %d (change explicit %d)\n",pcbddc->benign_saddle_point,pcbddc->benign_change_explicit);CHKERRQ(ierr); 146 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Benign subspace trick is active: %d\n",pcbddc->benign_have_null);CHKERRQ(ierr); 147 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Algebraic computation of no-net-flux %d\n",pcbddc->compute_nonetflux);CHKERRQ(ierr); 148 149 /* compute some numbers on the domain decomposition */ 150 ierr = VecSet(pcis->vec1_B,1.0);CHKERRQ(ierr); 151 ierr = MatCreateVecs(pc->pmat,&counter,0);CHKERRQ(ierr); 152 ierr = VecSet(counter,0.0);CHKERRQ(ierr); 153 ierr = VecScatterBegin(pcis->global_to_B,pcis->vec1_B,counter,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 154 ierr = VecScatterEnd(pcis->global_to_B,pcis->vec1_B,counter,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 155 ierr = VecSum(counter,&interface_size);CHKERRQ(ierr); 156 ierr = VecDestroy(&counter);CHKERRQ(ierr); 157 gsum[0] = 1; 158 gsum[1] = gsum[2] = gsum[3] = gsum[4] = 0; 159 loc[0] = !!pcis->n; 160 loc[1] = pcis->n - pcis->n_B; 161 loc[2] = pcis->n_B; 162 loc[3] = pcbddc->local_primal_size; 163 loc[4] = pcis->n; 164 loc[5] = pcbddc->benign_n; 165 ierr = MPI_Reduce(loc,gsum,5,MPIU_INT64,MPI_SUM,0,PetscObjectComm((PetscObject)pc));CHKERRQ(ierr); 166 if (!loc[0]) loc[1] = loc[2] = loc[3] = loc[4] = -1; 167 ierr = MPI_Reduce(loc,gmax,5,MPIU_INT64,MPI_MAX,0,PetscObjectComm((PetscObject)pc));CHKERRQ(ierr); 168 if (!loc[0]) loc[1] = loc[2] = loc[3] = loc[4] = PETSC_MAX_INT; 169 ierr = MPI_Reduce(loc,gmin,5,MPIU_INT64,MPI_MIN,0,PetscObjectComm((PetscObject)pc));CHKERRQ(ierr); 170 ierr = MPI_Reduce(&loc[5],&totbenign,1,MPIU_INT64,MPI_SUM,0,PetscObjectComm((PetscObject)pc));CHKERRQ(ierr); 171 if (pcbddc->coarse_size) { 172 ratio1 = pc->pmat->rmap->N/(1.*pcbddc->coarse_size); 173 ratio2 = PetscRealPart(interface_size)/pcbddc->coarse_size; 174 } 175 ierr = PetscViewerASCIIPrintf(viewer," BDDC: ********************************** STATISTICS AT LEVEL %d **********************************\n",pcbddc->current_level);CHKERRQ(ierr); 176 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Global dofs sizes: all %d interface %d coarse %d\n",pc->pmat->rmap->N,(PetscInt)PetscRealPart(interface_size),pcbddc->coarse_size);CHKERRQ(ierr); 177 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Coarsening ratios: all/coarse %d interface/coarse %d\n",(PetscInt)ratio1,(PetscInt)ratio2);CHKERRQ(ierr); 178 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Active processes : %d\n",(PetscInt)gsum[0]);CHKERRQ(ierr); 179 if (pcbddc->benign_have_null) { 180 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Benign subs : %d\n",(PetscInt)totbenign);CHKERRQ(ierr); 181 } 182 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Dofs type :\tMIN\tMAX\tMEAN\n",(PetscInt)gmin[1],(PetscInt)gmax[1],(PetscInt)(gsum[1]/gsum[0]));CHKERRQ(ierr); 183 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Interior dofs :\t%d\t%d\t%d\n",(PetscInt)gmin[1],(PetscInt)gmax[1],(PetscInt)(gsum[1]/gsum[0]));CHKERRQ(ierr); 184 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Interface dofs :\t%d\t%d\t%d\n",(PetscInt)gmin[2],(PetscInt)gmax[2],(PetscInt)(gsum[2]/gsum[0]));CHKERRQ(ierr); 185 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Primal dofs :\t%d\t%d\t%d\n",(PetscInt)gmin[3],(PetscInt)gmax[3],(PetscInt)(gsum[3]/gsum[0]));CHKERRQ(ierr); 186 ierr = PetscViewerASCIIPrintf(viewer," BDDC: Local dofs :\t%d\t%d\t%d\n",(PetscInt)gmin[4],(PetscInt)gmax[4],(PetscInt)(gsum[4]/gsum[0]));CHKERRQ(ierr); 187 ierr = PetscViewerASCIIPrintf(viewer," BDDC: ********************************** COARSE PROBLEM DETAILS *********************************\n",pcbddc->current_level);CHKERRQ(ierr); 188 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 189 190 /* the coarse problem can be handled with a different communicator */ 191 if (pcbddc->coarse_ksp) color = 1; 192 else color = 0; 193 ierr = MPI_Comm_rank(PetscObjectComm((PetscObject)pc),&rank);CHKERRQ(ierr); 194 ierr = MPI_Comm_size(PetscObjectComm((PetscObject)pc),&size);CHKERRQ(ierr); 195 ierr = PetscSubcommCreate(PetscObjectComm((PetscObject)pc),&subcomm);CHKERRQ(ierr); 196 ierr = PetscSubcommSetNumber(subcomm,PetscMin(size,2));CHKERRQ(ierr); 197 ierr = PetscSubcommSetTypeGeneral(subcomm,color,rank);CHKERRQ(ierr); 198 ierr = PetscViewerGetSubViewer(viewer,PetscSubcommChild(subcomm),&subviewer);CHKERRQ(ierr); 199 if (color == 1) { 200 ierr = KSPView(pcbddc->coarse_ksp,subviewer);CHKERRQ(ierr); 201 ierr = PetscViewerFlush(subviewer);CHKERRQ(ierr); 202 } 203 ierr = PetscViewerRestoreSubViewer(viewer,PetscSubcommChild(subcomm),&subviewer);CHKERRQ(ierr); 204 ierr = PetscSubcommDestroy(&subcomm);CHKERRQ(ierr); 205 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 206 } 207 PetscFunctionReturn(0); 208 } 209 /* -------------------------------------------------------------------------- */ 210 #undef __FUNCT__ 211 #define __FUNCT__ "PCBDDCSetDivergenceMat_BDDC" 212 static PetscErrorCode PCBDDCSetDivergenceMat_BDDC(PC pc, Mat divudotp, PetscBool trans, IS vl2l) 213 { 214 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 215 PetscErrorCode ierr; 216 217 PetscFunctionBegin; 218 ierr = PetscObjectReference((PetscObject)divudotp);CHKERRQ(ierr); 219 ierr = MatDestroy(&pcbddc->divudotp);CHKERRQ(ierr); 220 pcbddc->divudotp = divudotp; 221 pcbddc->divudotp_trans = trans; 222 pcbddc->compute_nonetflux = PETSC_TRUE; 223 if (vl2l) { 224 ierr = PetscObjectReference((PetscObject)vl2l);CHKERRQ(ierr); 225 ierr = ISDestroy(&pcbddc->divudotp_vl2l);CHKERRQ(ierr); 226 pcbddc->divudotp_vl2l = vl2l; 227 } 228 PetscFunctionReturn(0); 229 } 230 231 #undef __FUNCT__ 232 #define __FUNCT__ "PCBDDCSetDivergenceMat" 233 /*@ 234 PCBDDCSetDivergenceMat - Sets the linear operator representing \int_\Omega \div {\bf u} \cdot p dx 235 236 Collective on PC 237 238 Input Parameters: 239 + pc - the preconditioning context 240 . divudotp - the matrix (must be of type MATIS) 241 . trans - if trans if false (resp. true), then pressures are in the test (trial) space and velocities are in the trial (test) space. 242 - vl2l - optional IS describing the local (wrt the local mat in divudotp) to local (wrt the local mat in pc->pmat) map for the velocities 243 244 Level: advanced 245 246 Notes: This auxiliary matrix is used to compute quadrature weights representing the net-flux across subdomain boundaries 247 248 .seealso: PCBDDC 249 @*/ 250 PetscErrorCode PCBDDCSetDivergenceMat(PC pc, Mat divudotp, PetscBool trans, IS vl2l) 251 { 252 PetscBool ismatis; 253 PetscErrorCode ierr; 254 255 PetscFunctionBegin; 256 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 257 PetscValidHeaderSpecific(divudotp,MAT_CLASSID,2); 258 PetscCheckSameComm(pc,1,divudotp,2); 259 PetscValidLogicalCollectiveBool(pc,trans,3); 260 if (vl2l) PetscValidHeaderSpecific(divudotp,IS_CLASSID,4); 261 ierr = PetscObjectTypeCompare((PetscObject)divudotp,MATIS,&ismatis);CHKERRQ(ierr); 262 if (!ismatis) SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_ARG_WRONG,"Divergence matrix needs to be of type MATIS"); 263 ierr = PetscTryMethod(pc,"PCBDDCSetDivergenceMat_C",(PC,Mat,PetscBool,IS),(pc,divudotp,trans,vl2l));CHKERRQ(ierr); 264 PetscFunctionReturn(0); 265 } 266 267 #undef __FUNCT__ 268 #define __FUNCT__ "PCBDDCSetChangeOfBasisMat_BDDC" 269 static PetscErrorCode PCBDDCSetChangeOfBasisMat_BDDC(PC pc, Mat change, PetscBool interior) 270 { 271 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 272 PetscErrorCode ierr; 273 274 PetscFunctionBegin; 275 ierr = PetscObjectReference((PetscObject)change);CHKERRQ(ierr); 276 ierr = MatDestroy(&pcbddc->user_ChangeOfBasisMatrix);CHKERRQ(ierr); 277 pcbddc->user_ChangeOfBasisMatrix = change; 278 pcbddc->change_interior = interior; 279 PetscFunctionReturn(0); 280 } 281 #undef __FUNCT__ 282 #define __FUNCT__ "PCBDDCSetChangeOfBasisMat" 283 /*@ 284 PCBDDCSetChangeOfBasisMat - Set user defined change of basis for dofs 285 286 Collective on PC 287 288 Input Parameters: 289 + pc - the preconditioning context 290 . change - the change of basis matrix 291 - interior - whether or not the change of basis modifies interior dofs 292 293 Level: intermediate 294 295 Notes: 296 297 .seealso: PCBDDC 298 @*/ 299 PetscErrorCode PCBDDCSetChangeOfBasisMat(PC pc, Mat change, PetscBool interior) 300 { 301 PetscErrorCode ierr; 302 303 PetscFunctionBegin; 304 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 305 PetscValidHeaderSpecific(change,MAT_CLASSID,2); 306 PetscCheckSameComm(pc,1,change,2); 307 if (pc->mat) { 308 PetscInt rows_c,cols_c,rows,cols; 309 ierr = MatGetSize(pc->mat,&rows,&cols);CHKERRQ(ierr); 310 ierr = MatGetSize(change,&rows_c,&cols_c);CHKERRQ(ierr); 311 if (rows_c != rows) SETERRQ2(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"Invalid number of rows for change of basis matrix! %d != %d",rows_c,rows); 312 if (cols_c != cols) SETERRQ2(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"Invalid number of columns for change of basis matrix! %d != %d",cols_c,cols); 313 ierr = MatGetLocalSize(pc->mat,&rows,&cols);CHKERRQ(ierr); 314 ierr = MatGetLocalSize(change,&rows_c,&cols_c);CHKERRQ(ierr); 315 if (rows_c != rows) SETERRQ2(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"Invalid number of local rows for change of basis matrix! %d != %d",rows_c,rows); 316 if (cols_c != cols) SETERRQ2(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"Invalid number of local columns for change of basis matrix! %d != %d",cols_c,cols); 317 } 318 ierr = PetscTryMethod(pc,"PCBDDCSetChangeOfBasisMat_C",(PC,Mat,PetscBool),(pc,change,interior));CHKERRQ(ierr); 319 PetscFunctionReturn(0); 320 } 321 322 #undef __FUNCT__ 323 #define __FUNCT__ "PCBDDCSetPrimalVerticesIS_BDDC" 324 static PetscErrorCode PCBDDCSetPrimalVerticesIS_BDDC(PC pc, IS PrimalVertices) 325 { 326 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 327 PetscBool isequal = PETSC_FALSE; 328 PetscErrorCode ierr; 329 330 PetscFunctionBegin; 331 ierr = PetscObjectReference((PetscObject)PrimalVertices);CHKERRQ(ierr); 332 if (pcbddc->user_primal_vertices) { 333 ierr = ISEqual(PrimalVertices,pcbddc->user_primal_vertices,&isequal);CHKERRQ(ierr); 334 } 335 ierr = ISDestroy(&pcbddc->user_primal_vertices);CHKERRQ(ierr); 336 ierr = ISDestroy(&pcbddc->user_primal_vertices_local);CHKERRQ(ierr); 337 pcbddc->user_primal_vertices = PrimalVertices; 338 if (!isequal) pcbddc->recompute_topography = PETSC_TRUE; 339 PetscFunctionReturn(0); 340 } 341 #undef __FUNCT__ 342 #define __FUNCT__ "PCBDDCSetPrimalVerticesIS" 343 /*@ 344 PCBDDCSetPrimalVerticesIS - Set additional user defined primal vertices in PCBDDC 345 346 Collective 347 348 Input Parameters: 349 + pc - the preconditioning context 350 - PrimalVertices - index set of primal vertices in global numbering (can be empty) 351 352 Level: intermediate 353 354 Notes: 355 Any process can list any global node 356 357 .seealso: PCBDDC 358 @*/ 359 PetscErrorCode PCBDDCSetPrimalVerticesIS(PC pc, IS PrimalVertices) 360 { 361 PetscErrorCode ierr; 362 363 PetscFunctionBegin; 364 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 365 PetscValidHeaderSpecific(PrimalVertices,IS_CLASSID,2); 366 PetscCheckSameComm(pc,1,PrimalVertices,2); 367 ierr = PetscTryMethod(pc,"PCBDDCSetPrimalVerticesIS_C",(PC,IS),(pc,PrimalVertices));CHKERRQ(ierr); 368 PetscFunctionReturn(0); 369 } 370 371 #undef __FUNCT__ 372 #define __FUNCT__ "PCBDDCSetPrimalVerticesLocalIS_BDDC" 373 static PetscErrorCode PCBDDCSetPrimalVerticesLocalIS_BDDC(PC pc, IS PrimalVertices) 374 { 375 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 376 PetscBool isequal = PETSC_FALSE; 377 PetscErrorCode ierr; 378 379 PetscFunctionBegin; 380 ierr = PetscObjectReference((PetscObject)PrimalVertices);CHKERRQ(ierr); 381 if (pcbddc->user_primal_vertices_local) { 382 ierr = ISEqual(PrimalVertices,pcbddc->user_primal_vertices_local,&isequal);CHKERRQ(ierr); 383 } 384 ierr = ISDestroy(&pcbddc->user_primal_vertices);CHKERRQ(ierr); 385 ierr = ISDestroy(&pcbddc->user_primal_vertices_local);CHKERRQ(ierr); 386 pcbddc->user_primal_vertices_local = PrimalVertices; 387 if (!isequal) pcbddc->recompute_topography = PETSC_TRUE; 388 PetscFunctionReturn(0); 389 } 390 #undef __FUNCT__ 391 #define __FUNCT__ "PCBDDCSetPrimalVerticesLocalIS" 392 /*@ 393 PCBDDCSetPrimalVerticesLocalIS - Set additional user defined primal vertices in PCBDDC 394 395 Collective 396 397 Input Parameters: 398 + pc - the preconditioning context 399 - PrimalVertices - index set of primal vertices in local numbering (can be empty) 400 401 Level: intermediate 402 403 Notes: 404 405 .seealso: PCBDDC 406 @*/ 407 PetscErrorCode PCBDDCSetPrimalVerticesLocalIS(PC pc, IS PrimalVertices) 408 { 409 PetscErrorCode ierr; 410 411 PetscFunctionBegin; 412 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 413 PetscValidHeaderSpecific(PrimalVertices,IS_CLASSID,2); 414 PetscCheckSameComm(pc,1,PrimalVertices,2); 415 ierr = PetscTryMethod(pc,"PCBDDCSetPrimalVerticesLocalIS_C",(PC,IS),(pc,PrimalVertices));CHKERRQ(ierr); 416 PetscFunctionReturn(0); 417 } 418 419 #undef __FUNCT__ 420 #define __FUNCT__ "PCBDDCSetCoarseningRatio_BDDC" 421 static PetscErrorCode PCBDDCSetCoarseningRatio_BDDC(PC pc,PetscInt k) 422 { 423 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 424 425 PetscFunctionBegin; 426 pcbddc->coarsening_ratio = k; 427 PetscFunctionReturn(0); 428 } 429 430 #undef __FUNCT__ 431 #define __FUNCT__ "PCBDDCSetCoarseningRatio" 432 /*@ 433 PCBDDCSetCoarseningRatio - Set coarsening ratio used in multilevel 434 435 Logically collective on PC 436 437 Input Parameters: 438 + pc - the preconditioning context 439 - k - coarsening ratio (H/h at the coarser level) 440 441 Options Database Keys: 442 . -pc_bddc_coarsening_ratio 443 444 Level: intermediate 445 446 Notes: 447 Approximatively k subdomains at the finer level will be aggregated into a single subdomain at the coarser level 448 449 .seealso: PCBDDC, PCBDDCSetLevels() 450 @*/ 451 PetscErrorCode PCBDDCSetCoarseningRatio(PC pc,PetscInt k) 452 { 453 PetscErrorCode ierr; 454 455 PetscFunctionBegin; 456 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 457 PetscValidLogicalCollectiveInt(pc,k,2); 458 ierr = PetscTryMethod(pc,"PCBDDCSetCoarseningRatio_C",(PC,PetscInt),(pc,k));CHKERRQ(ierr); 459 PetscFunctionReturn(0); 460 } 461 462 /* The following functions (PCBDDCSetUseExactDirichlet PCBDDCSetLevel) are not public */ 463 #undef __FUNCT__ 464 #define __FUNCT__ "PCBDDCSetUseExactDirichlet_BDDC" 465 static PetscErrorCode PCBDDCSetUseExactDirichlet_BDDC(PC pc,PetscBool flg) 466 { 467 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 468 469 PetscFunctionBegin; 470 pcbddc->use_exact_dirichlet_trick = flg; 471 PetscFunctionReturn(0); 472 } 473 474 #undef __FUNCT__ 475 #define __FUNCT__ "PCBDDCSetUseExactDirichlet" 476 PetscErrorCode PCBDDCSetUseExactDirichlet(PC pc,PetscBool flg) 477 { 478 PetscErrorCode ierr; 479 480 PetscFunctionBegin; 481 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 482 PetscValidLogicalCollectiveBool(pc,flg,2); 483 ierr = PetscTryMethod(pc,"PCBDDCSetUseExactDirichlet_C",(PC,PetscBool),(pc,flg));CHKERRQ(ierr); 484 PetscFunctionReturn(0); 485 } 486 487 #undef __FUNCT__ 488 #define __FUNCT__ "PCBDDCSetLevel_BDDC" 489 static PetscErrorCode PCBDDCSetLevel_BDDC(PC pc,PetscInt level) 490 { 491 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 492 493 PetscFunctionBegin; 494 pcbddc->current_level = level; 495 PetscFunctionReturn(0); 496 } 497 498 #undef __FUNCT__ 499 #define __FUNCT__ "PCBDDCSetLevel" 500 PetscErrorCode PCBDDCSetLevel(PC pc,PetscInt level) 501 { 502 PetscErrorCode ierr; 503 504 PetscFunctionBegin; 505 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 506 PetscValidLogicalCollectiveInt(pc,level,2); 507 ierr = PetscTryMethod(pc,"PCBDDCSetLevel_C",(PC,PetscInt),(pc,level));CHKERRQ(ierr); 508 PetscFunctionReturn(0); 509 } 510 511 #undef __FUNCT__ 512 #define __FUNCT__ "PCBDDCSetLevels_BDDC" 513 static PetscErrorCode PCBDDCSetLevels_BDDC(PC pc,PetscInt levels) 514 { 515 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 516 517 PetscFunctionBegin; 518 pcbddc->max_levels = levels; 519 PetscFunctionReturn(0); 520 } 521 522 #undef __FUNCT__ 523 #define __FUNCT__ "PCBDDCSetLevels" 524 /*@ 525 PCBDDCSetLevels - Sets the maximum number of levels for multilevel 526 527 Logically collective on PC 528 529 Input Parameters: 530 + pc - the preconditioning context 531 - levels - the maximum number of levels (max 9) 532 533 Options Database Keys: 534 . -pc_bddc_levels 535 536 Level: intermediate 537 538 Notes: 539 Default value is 0, i.e. traditional one-level BDDC 540 541 .seealso: PCBDDC, PCBDDCSetCoarseningRatio() 542 @*/ 543 PetscErrorCode PCBDDCSetLevels(PC pc,PetscInt levels) 544 { 545 PetscErrorCode ierr; 546 547 PetscFunctionBegin; 548 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 549 PetscValidLogicalCollectiveInt(pc,levels,2); 550 if (levels > 99) SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"Maximum number of levels for bddc is 99\n"); 551 ierr = PetscTryMethod(pc,"PCBDDCSetLevels_C",(PC,PetscInt),(pc,levels));CHKERRQ(ierr); 552 PetscFunctionReturn(0); 553 } 554 555 #undef __FUNCT__ 556 #define __FUNCT__ "PCBDDCSetDirichletBoundaries_BDDC" 557 static PetscErrorCode PCBDDCSetDirichletBoundaries_BDDC(PC pc,IS DirichletBoundaries) 558 { 559 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 560 PetscBool isequal = PETSC_FALSE; 561 PetscErrorCode ierr; 562 563 PetscFunctionBegin; 564 ierr = PetscObjectReference((PetscObject)DirichletBoundaries);CHKERRQ(ierr); 565 if (pcbddc->DirichletBoundaries) { 566 ierr = ISEqual(DirichletBoundaries,pcbddc->DirichletBoundaries,&isequal);CHKERRQ(ierr); 567 } 568 /* last user setting takes precendence -> destroy any other customization */ 569 ierr = ISDestroy(&pcbddc->DirichletBoundariesLocal);CHKERRQ(ierr); 570 ierr = ISDestroy(&pcbddc->DirichletBoundaries);CHKERRQ(ierr); 571 pcbddc->DirichletBoundaries = DirichletBoundaries; 572 if (!isequal) pcbddc->recompute_topography = PETSC_TRUE; 573 PetscFunctionReturn(0); 574 } 575 576 #undef __FUNCT__ 577 #define __FUNCT__ "PCBDDCSetDirichletBoundaries" 578 /*@ 579 PCBDDCSetDirichletBoundaries - Set IS defining Dirichlet boundaries for the global problem. 580 581 Collective 582 583 Input Parameters: 584 + pc - the preconditioning context 585 - DirichletBoundaries - parallel IS defining the Dirichlet boundaries 586 587 Level: intermediate 588 589 Notes: 590 Provide the information if you used MatZeroRows/Columns routines. Any process can list any global node 591 592 .seealso: PCBDDC, PCBDDCSetDirichletBoundariesLocal(), MatZeroRows(), MatZeroRowsColumns() 593 @*/ 594 PetscErrorCode PCBDDCSetDirichletBoundaries(PC pc,IS DirichletBoundaries) 595 { 596 PetscErrorCode ierr; 597 598 PetscFunctionBegin; 599 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 600 PetscValidHeaderSpecific(DirichletBoundaries,IS_CLASSID,2); 601 PetscCheckSameComm(pc,1,DirichletBoundaries,2); 602 ierr = PetscTryMethod(pc,"PCBDDCSetDirichletBoundaries_C",(PC,IS),(pc,DirichletBoundaries));CHKERRQ(ierr); 603 PetscFunctionReturn(0); 604 } 605 606 #undef __FUNCT__ 607 #define __FUNCT__ "PCBDDCSetDirichletBoundariesLocal_BDDC" 608 static PetscErrorCode PCBDDCSetDirichletBoundariesLocal_BDDC(PC pc,IS DirichletBoundaries) 609 { 610 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 611 PetscBool isequal = PETSC_FALSE; 612 PetscErrorCode ierr; 613 614 PetscFunctionBegin; 615 ierr = PetscObjectReference((PetscObject)DirichletBoundaries);CHKERRQ(ierr); 616 if (pcbddc->DirichletBoundariesLocal) { 617 ierr = ISEqual(DirichletBoundaries,pcbddc->DirichletBoundariesLocal,&isequal);CHKERRQ(ierr); 618 } 619 /* last user setting takes precendence -> destroy any other customization */ 620 ierr = ISDestroy(&pcbddc->DirichletBoundariesLocal);CHKERRQ(ierr); 621 ierr = ISDestroy(&pcbddc->DirichletBoundaries);CHKERRQ(ierr); 622 pcbddc->DirichletBoundariesLocal = DirichletBoundaries; 623 if (!isequal) pcbddc->recompute_topography = PETSC_TRUE; 624 PetscFunctionReturn(0); 625 } 626 627 #undef __FUNCT__ 628 #define __FUNCT__ "PCBDDCSetDirichletBoundariesLocal" 629 /*@ 630 PCBDDCSetDirichletBoundariesLocal - Set IS defining Dirichlet boundaries for the global problem in local ordering. 631 632 Collective 633 634 Input Parameters: 635 + pc - the preconditioning context 636 - DirichletBoundaries - parallel IS defining the Dirichlet boundaries (in local ordering) 637 638 Level: intermediate 639 640 Notes: 641 642 .seealso: PCBDDC, PCBDDCSetDirichletBoundaries(), MatZeroRows(), MatZeroRowsColumns() 643 @*/ 644 PetscErrorCode PCBDDCSetDirichletBoundariesLocal(PC pc,IS DirichletBoundaries) 645 { 646 PetscErrorCode ierr; 647 648 PetscFunctionBegin; 649 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 650 PetscValidHeaderSpecific(DirichletBoundaries,IS_CLASSID,2); 651 PetscCheckSameComm(pc,1,DirichletBoundaries,2); 652 ierr = PetscTryMethod(pc,"PCBDDCSetDirichletBoundariesLocal_C",(PC,IS),(pc,DirichletBoundaries));CHKERRQ(ierr); 653 PetscFunctionReturn(0); 654 } 655 656 #undef __FUNCT__ 657 #define __FUNCT__ "PCBDDCSetNeumannBoundaries_BDDC" 658 static PetscErrorCode PCBDDCSetNeumannBoundaries_BDDC(PC pc,IS NeumannBoundaries) 659 { 660 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 661 PetscBool isequal = PETSC_FALSE; 662 PetscErrorCode ierr; 663 664 PetscFunctionBegin; 665 ierr = PetscObjectReference((PetscObject)NeumannBoundaries);CHKERRQ(ierr); 666 if (pcbddc->NeumannBoundaries) { 667 ierr = ISEqual(NeumannBoundaries,pcbddc->NeumannBoundaries,&isequal);CHKERRQ(ierr); 668 } 669 /* last user setting takes precendence -> destroy any other customization */ 670 ierr = ISDestroy(&pcbddc->NeumannBoundariesLocal);CHKERRQ(ierr); 671 ierr = ISDestroy(&pcbddc->NeumannBoundaries);CHKERRQ(ierr); 672 pcbddc->NeumannBoundaries = NeumannBoundaries; 673 if (!isequal) pcbddc->recompute_topography = PETSC_TRUE; 674 PetscFunctionReturn(0); 675 } 676 677 #undef __FUNCT__ 678 #define __FUNCT__ "PCBDDCSetNeumannBoundaries" 679 /*@ 680 PCBDDCSetNeumannBoundaries - Set IS defining Neumann boundaries for the global problem. 681 682 Collective 683 684 Input Parameters: 685 + pc - the preconditioning context 686 - NeumannBoundaries - parallel IS defining the Neumann boundaries 687 688 Level: intermediate 689 690 Notes: 691 Any process can list any global node 692 693 .seealso: PCBDDC, PCBDDCSetNeumannBoundariesLocal() 694 @*/ 695 PetscErrorCode PCBDDCSetNeumannBoundaries(PC pc,IS NeumannBoundaries) 696 { 697 PetscErrorCode ierr; 698 699 PetscFunctionBegin; 700 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 701 PetscValidHeaderSpecific(NeumannBoundaries,IS_CLASSID,2); 702 PetscCheckSameComm(pc,1,NeumannBoundaries,2); 703 ierr = PetscTryMethod(pc,"PCBDDCSetNeumannBoundaries_C",(PC,IS),(pc,NeumannBoundaries));CHKERRQ(ierr); 704 PetscFunctionReturn(0); 705 } 706 707 #undef __FUNCT__ 708 #define __FUNCT__ "PCBDDCSetNeumannBoundariesLocal_BDDC" 709 static PetscErrorCode PCBDDCSetNeumannBoundariesLocal_BDDC(PC pc,IS NeumannBoundaries) 710 { 711 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 712 PetscBool isequal = PETSC_FALSE; 713 PetscErrorCode ierr; 714 715 PetscFunctionBegin; 716 ierr = PetscObjectReference((PetscObject)NeumannBoundaries);CHKERRQ(ierr); 717 if (pcbddc->NeumannBoundariesLocal) { 718 ierr = ISEqual(NeumannBoundaries,pcbddc->NeumannBoundariesLocal,&isequal);CHKERRQ(ierr); 719 } 720 /* last user setting takes precendence -> destroy any other customization */ 721 ierr = ISDestroy(&pcbddc->NeumannBoundariesLocal);CHKERRQ(ierr); 722 ierr = ISDestroy(&pcbddc->NeumannBoundaries);CHKERRQ(ierr); 723 pcbddc->NeumannBoundariesLocal = NeumannBoundaries; 724 if (!isequal) pcbddc->recompute_topography = PETSC_TRUE; 725 PetscFunctionReturn(0); 726 } 727 728 #undef __FUNCT__ 729 #define __FUNCT__ "PCBDDCSetNeumannBoundariesLocal" 730 /*@ 731 PCBDDCSetNeumannBoundariesLocal - Set IS defining Neumann boundaries for the global problem in local ordering. 732 733 Collective 734 735 Input Parameters: 736 + pc - the preconditioning context 737 - NeumannBoundaries - parallel IS defining the subdomain part of Neumann boundaries (in local ordering) 738 739 Level: intermediate 740 741 Notes: 742 743 .seealso: PCBDDC, PCBDDCSetNeumannBoundaries() 744 @*/ 745 PetscErrorCode PCBDDCSetNeumannBoundariesLocal(PC pc,IS NeumannBoundaries) 746 { 747 PetscErrorCode ierr; 748 749 PetscFunctionBegin; 750 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 751 PetscValidHeaderSpecific(NeumannBoundaries,IS_CLASSID,2); 752 PetscCheckSameComm(pc,1,NeumannBoundaries,2); 753 ierr = PetscTryMethod(pc,"PCBDDCSetNeumannBoundariesLocal_C",(PC,IS),(pc,NeumannBoundaries));CHKERRQ(ierr); 754 PetscFunctionReturn(0); 755 } 756 757 #undef __FUNCT__ 758 #define __FUNCT__ "PCBDDCGetDirichletBoundaries_BDDC" 759 static PetscErrorCode PCBDDCGetDirichletBoundaries_BDDC(PC pc,IS *DirichletBoundaries) 760 { 761 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 762 763 PetscFunctionBegin; 764 *DirichletBoundaries = pcbddc->DirichletBoundaries; 765 PetscFunctionReturn(0); 766 } 767 768 #undef __FUNCT__ 769 #define __FUNCT__ "PCBDDCGetDirichletBoundaries" 770 /*@ 771 PCBDDCGetDirichletBoundaries - Get parallel IS for Dirichlet boundaries 772 773 Collective 774 775 Input Parameters: 776 . pc - the preconditioning context 777 778 Output Parameters: 779 . DirichletBoundaries - index set defining the Dirichlet boundaries 780 781 Level: intermediate 782 783 Notes: 784 The IS returned (if any) is the same passed in earlier by the user with PCBDDCSetDirichletBoundaries 785 786 .seealso: PCBDDC 787 @*/ 788 PetscErrorCode PCBDDCGetDirichletBoundaries(PC pc,IS *DirichletBoundaries) 789 { 790 PetscErrorCode ierr; 791 792 PetscFunctionBegin; 793 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 794 ierr = PetscUseMethod(pc,"PCBDDCGetDirichletBoundaries_C",(PC,IS*),(pc,DirichletBoundaries));CHKERRQ(ierr); 795 PetscFunctionReturn(0); 796 } 797 798 #undef __FUNCT__ 799 #define __FUNCT__ "PCBDDCGetDirichletBoundariesLocal_BDDC" 800 static PetscErrorCode PCBDDCGetDirichletBoundariesLocal_BDDC(PC pc,IS *DirichletBoundaries) 801 { 802 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 803 804 PetscFunctionBegin; 805 *DirichletBoundaries = pcbddc->DirichletBoundariesLocal; 806 PetscFunctionReturn(0); 807 } 808 809 #undef __FUNCT__ 810 #define __FUNCT__ "PCBDDCGetDirichletBoundariesLocal" 811 /*@ 812 PCBDDCGetDirichletBoundariesLocal - Get parallel IS for Dirichlet boundaries (in local ordering) 813 814 Collective 815 816 Input Parameters: 817 . pc - the preconditioning context 818 819 Output Parameters: 820 . DirichletBoundaries - index set defining the subdomain part of Dirichlet boundaries 821 822 Level: intermediate 823 824 Notes: 825 The IS returned could be the same passed in earlier by the user (if provided with PCBDDCSetDirichletBoundariesLocal) or a global-to-local map of the global IS (if provided with PCBDDCSetDirichletBoundaries). 826 In the latter case, the IS will be available after PCSetUp. 827 828 .seealso: PCBDDC 829 @*/ 830 PetscErrorCode PCBDDCGetDirichletBoundariesLocal(PC pc,IS *DirichletBoundaries) 831 { 832 PetscErrorCode ierr; 833 834 PetscFunctionBegin; 835 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 836 ierr = PetscUseMethod(pc,"PCBDDCGetDirichletBoundariesLocal_C",(PC,IS*),(pc,DirichletBoundaries));CHKERRQ(ierr); 837 PetscFunctionReturn(0); 838 } 839 840 #undef __FUNCT__ 841 #define __FUNCT__ "PCBDDCGetNeumannBoundaries_BDDC" 842 static PetscErrorCode PCBDDCGetNeumannBoundaries_BDDC(PC pc,IS *NeumannBoundaries) 843 { 844 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 845 846 PetscFunctionBegin; 847 *NeumannBoundaries = pcbddc->NeumannBoundaries; 848 PetscFunctionReturn(0); 849 } 850 851 #undef __FUNCT__ 852 #define __FUNCT__ "PCBDDCGetNeumannBoundaries" 853 /*@ 854 PCBDDCGetNeumannBoundaries - Get parallel IS for Neumann boundaries 855 856 Collective 857 858 Input Parameters: 859 . pc - the preconditioning context 860 861 Output Parameters: 862 . NeumannBoundaries - index set defining the Neumann boundaries 863 864 Level: intermediate 865 866 Notes: 867 The IS returned (if any) is the same passed in earlier by the user with PCBDDCSetNeumannBoundaries 868 869 .seealso: PCBDDC 870 @*/ 871 PetscErrorCode PCBDDCGetNeumannBoundaries(PC pc,IS *NeumannBoundaries) 872 { 873 PetscErrorCode ierr; 874 875 PetscFunctionBegin; 876 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 877 ierr = PetscUseMethod(pc,"PCBDDCGetNeumannBoundaries_C",(PC,IS*),(pc,NeumannBoundaries));CHKERRQ(ierr); 878 PetscFunctionReturn(0); 879 } 880 881 #undef __FUNCT__ 882 #define __FUNCT__ "PCBDDCGetNeumannBoundariesLocal_BDDC" 883 static PetscErrorCode PCBDDCGetNeumannBoundariesLocal_BDDC(PC pc,IS *NeumannBoundaries) 884 { 885 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 886 887 PetscFunctionBegin; 888 *NeumannBoundaries = pcbddc->NeumannBoundariesLocal; 889 PetscFunctionReturn(0); 890 } 891 892 #undef __FUNCT__ 893 #define __FUNCT__ "PCBDDCGetNeumannBoundariesLocal" 894 /*@ 895 PCBDDCGetNeumannBoundariesLocal - Get parallel IS for Neumann boundaries (in local ordering) 896 897 Collective 898 899 Input Parameters: 900 . pc - the preconditioning context 901 902 Output Parameters: 903 . NeumannBoundaries - index set defining the subdomain part of Neumann boundaries 904 905 Level: intermediate 906 907 Notes: 908 The IS returned could be the same passed in earlier by the user (if provided with PCBDDCSetNeumannBoundariesLocal) or a global-to-local map of the global IS (if provided with PCBDDCSetNeumannBoundaries). 909 In the latter case, the IS will be available after PCSetUp. 910 911 .seealso: PCBDDC 912 @*/ 913 PetscErrorCode PCBDDCGetNeumannBoundariesLocal(PC pc,IS *NeumannBoundaries) 914 { 915 PetscErrorCode ierr; 916 917 PetscFunctionBegin; 918 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 919 ierr = PetscUseMethod(pc,"PCBDDCGetNeumannBoundariesLocal_C",(PC,IS*),(pc,NeumannBoundaries));CHKERRQ(ierr); 920 PetscFunctionReturn(0); 921 } 922 923 #undef __FUNCT__ 924 #define __FUNCT__ "PCBDDCSetLocalAdjacencyGraph_BDDC" 925 static PetscErrorCode PCBDDCSetLocalAdjacencyGraph_BDDC(PC pc, PetscInt nvtxs,const PetscInt xadj[],const PetscInt adjncy[], PetscCopyMode copymode) 926 { 927 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 928 PCBDDCGraph mat_graph = pcbddc->mat_graph; 929 PetscBool same_data = PETSC_FALSE; 930 PetscErrorCode ierr; 931 932 PetscFunctionBegin; 933 if (!nvtxs) { 934 ierr = PCBDDCGraphResetCSR(mat_graph);CHKERRQ(ierr); 935 PetscFunctionReturn(0); 936 } 937 if (mat_graph->nvtxs_csr == nvtxs && mat_graph->freecsr) { /* we own the data */ 938 if (mat_graph->xadj == xadj && mat_graph->adjncy == adjncy) same_data = PETSC_TRUE; 939 if (!same_data && mat_graph->xadj[nvtxs] == xadj[nvtxs]) { 940 ierr = PetscMemcmp(xadj,mat_graph->xadj,(nvtxs+1)*sizeof(PetscInt),&same_data);CHKERRQ(ierr); 941 if (same_data) { 942 ierr = PetscMemcmp(adjncy,mat_graph->adjncy,xadj[nvtxs]*sizeof(PetscInt),&same_data);CHKERRQ(ierr); 943 } 944 } 945 } 946 if (!same_data) { 947 /* free old CSR */ 948 ierr = PCBDDCGraphResetCSR(mat_graph);CHKERRQ(ierr); 949 /* get CSR into graph structure */ 950 if (copymode == PETSC_COPY_VALUES) { 951 ierr = PetscMalloc1(nvtxs+1,&mat_graph->xadj);CHKERRQ(ierr); 952 ierr = PetscMalloc1(xadj[nvtxs],&mat_graph->adjncy);CHKERRQ(ierr); 953 ierr = PetscMemcpy(mat_graph->xadj,xadj,(nvtxs+1)*sizeof(PetscInt));CHKERRQ(ierr); 954 ierr = PetscMemcpy(mat_graph->adjncy,adjncy,xadj[nvtxs]*sizeof(PetscInt));CHKERRQ(ierr); 955 mat_graph->freecsr = PETSC_TRUE; 956 } else if (copymode == PETSC_OWN_POINTER) { 957 mat_graph->xadj = (PetscInt*)xadj; 958 mat_graph->adjncy = (PetscInt*)adjncy; 959 mat_graph->freecsr = PETSC_TRUE; 960 } else if (copymode == PETSC_USE_POINTER) { 961 mat_graph->xadj = (PetscInt*)xadj; 962 mat_graph->adjncy = (PetscInt*)adjncy; 963 mat_graph->freecsr = PETSC_FALSE; 964 } else SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SUP,"Unsupported copy mode %d",copymode); 965 mat_graph->nvtxs_csr = nvtxs; 966 pcbddc->recompute_topography = PETSC_TRUE; 967 } 968 PetscFunctionReturn(0); 969 } 970 971 #undef __FUNCT__ 972 #define __FUNCT__ "PCBDDCSetLocalAdjacencyGraph" 973 /*@ 974 PCBDDCSetLocalAdjacencyGraph - Set adjacency structure (CSR graph) of the local matrix 975 976 Not collective 977 978 Input Parameters: 979 + pc - the preconditioning context 980 . nvtxs - number of local vertices of the graph (i.e., the size of the local problem) 981 . xadj, adjncy - the CSR graph 982 - copymode - either PETSC_COPY_VALUES or PETSC_OWN_POINTER. 983 984 Level: intermediate 985 986 Notes: 987 988 .seealso: PCBDDC,PetscCopyMode 989 @*/ 990 PetscErrorCode PCBDDCSetLocalAdjacencyGraph(PC pc,PetscInt nvtxs,const PetscInt xadj[],const PetscInt adjncy[], PetscCopyMode copymode) 991 { 992 void (*f)(void) = 0; 993 PetscErrorCode ierr; 994 995 PetscFunctionBegin; 996 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 997 if (nvtxs) { 998 PetscValidIntPointer(xadj,3); 999 PetscValidIntPointer(adjncy,4); 1000 } 1001 ierr = PetscTryMethod(pc,"PCBDDCSetLocalAdjacencyGraph_C",(PC,PetscInt,const PetscInt[],const PetscInt[],PetscCopyMode),(pc,nvtxs,xadj,adjncy,copymode));CHKERRQ(ierr); 1002 /* free arrays if PCBDDC is not the PC type */ 1003 ierr = PetscObjectQueryFunction((PetscObject)pc,"PCBDDCSetLocalAdjacencyGraph_C",&f);CHKERRQ(ierr); 1004 if (!f && copymode == PETSC_OWN_POINTER) { 1005 ierr = PetscFree(xadj);CHKERRQ(ierr); 1006 ierr = PetscFree(adjncy);CHKERRQ(ierr); 1007 } 1008 PetscFunctionReturn(0); 1009 } 1010 1011 #undef __FUNCT__ 1012 #define __FUNCT__ "PCBDDCSetDofsSplittingLocal_BDDC" 1013 static PetscErrorCode PCBDDCSetDofsSplittingLocal_BDDC(PC pc,PetscInt n_is, IS ISForDofs[]) 1014 { 1015 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 1016 PetscInt i; 1017 PetscBool isequal = PETSC_FALSE; 1018 PetscErrorCode ierr; 1019 1020 PetscFunctionBegin; 1021 if (pcbddc->n_ISForDofsLocal == n_is) { 1022 for (i=0;i<n_is;i++) { 1023 PetscBool isequalt; 1024 ierr = ISEqual(ISForDofs[i],pcbddc->ISForDofsLocal[i],&isequalt);CHKERRQ(ierr); 1025 if (!isequalt) break; 1026 } 1027 if (i == n_is) isequal = PETSC_TRUE; 1028 } 1029 for (i=0;i<n_is;i++) { 1030 ierr = PetscObjectReference((PetscObject)ISForDofs[i]);CHKERRQ(ierr); 1031 } 1032 /* Destroy ISes if they were already set */ 1033 for (i=0;i<pcbddc->n_ISForDofsLocal;i++) { 1034 ierr = ISDestroy(&pcbddc->ISForDofsLocal[i]);CHKERRQ(ierr); 1035 } 1036 ierr = PetscFree(pcbddc->ISForDofsLocal);CHKERRQ(ierr); 1037 /* last user setting takes precendence -> destroy any other customization */ 1038 for (i=0;i<pcbddc->n_ISForDofs;i++) { 1039 ierr = ISDestroy(&pcbddc->ISForDofs[i]);CHKERRQ(ierr); 1040 } 1041 ierr = PetscFree(pcbddc->ISForDofs);CHKERRQ(ierr); 1042 pcbddc->n_ISForDofs = 0; 1043 /* allocate space then set */ 1044 if (n_is) { 1045 ierr = PetscMalloc1(n_is,&pcbddc->ISForDofsLocal);CHKERRQ(ierr); 1046 } 1047 for (i=0;i<n_is;i++) { 1048 pcbddc->ISForDofsLocal[i] = ISForDofs[i]; 1049 } 1050 pcbddc->n_ISForDofsLocal = n_is; 1051 if (n_is) pcbddc->user_provided_isfordofs = PETSC_TRUE; 1052 if (!isequal) pcbddc->recompute_topography = PETSC_TRUE; 1053 PetscFunctionReturn(0); 1054 } 1055 1056 #undef __FUNCT__ 1057 #define __FUNCT__ "PCBDDCSetDofsSplittingLocal" 1058 /*@ 1059 PCBDDCSetDofsSplittingLocal - Set index sets defining fields of the local subdomain matrix 1060 1061 Collective 1062 1063 Input Parameters: 1064 + pc - the preconditioning context 1065 . n_is - number of index sets defining the fields 1066 - ISForDofs - array of IS describing the fields in local ordering 1067 1068 Level: intermediate 1069 1070 Notes: 1071 n_is should be the same among processes. Not all nodes need to be listed: unlisted nodes will belong to the complement field. 1072 1073 .seealso: PCBDDC 1074 @*/ 1075 PetscErrorCode PCBDDCSetDofsSplittingLocal(PC pc,PetscInt n_is, IS ISForDofs[]) 1076 { 1077 PetscInt i; 1078 PetscErrorCode ierr; 1079 1080 PetscFunctionBegin; 1081 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 1082 PetscValidLogicalCollectiveInt(pc,n_is,2); 1083 for (i=0;i<n_is;i++) { 1084 PetscCheckSameComm(pc,1,ISForDofs[i],3); 1085 PetscValidHeaderSpecific(ISForDofs[i],IS_CLASSID,3); 1086 } 1087 ierr = PetscTryMethod(pc,"PCBDDCSetDofsSplittingLocal_C",(PC,PetscInt,IS[]),(pc,n_is,ISForDofs));CHKERRQ(ierr); 1088 PetscFunctionReturn(0); 1089 } 1090 1091 #undef __FUNCT__ 1092 #define __FUNCT__ "PCBDDCSetDofsSplitting_BDDC" 1093 static PetscErrorCode PCBDDCSetDofsSplitting_BDDC(PC pc,PetscInt n_is, IS ISForDofs[]) 1094 { 1095 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 1096 PetscInt i; 1097 PetscBool isequal = PETSC_FALSE; 1098 PetscErrorCode ierr; 1099 1100 PetscFunctionBegin; 1101 if (pcbddc->n_ISForDofs == n_is) { 1102 for (i=0;i<n_is;i++) { 1103 PetscBool isequalt; 1104 ierr = ISEqual(ISForDofs[i],pcbddc->ISForDofs[i],&isequalt);CHKERRQ(ierr); 1105 if (!isequalt) break; 1106 } 1107 if (i == n_is) isequal = PETSC_TRUE; 1108 } 1109 for (i=0;i<n_is;i++) { 1110 ierr = PetscObjectReference((PetscObject)ISForDofs[i]);CHKERRQ(ierr); 1111 } 1112 /* Destroy ISes if they were already set */ 1113 for (i=0;i<pcbddc->n_ISForDofs;i++) { 1114 ierr = ISDestroy(&pcbddc->ISForDofs[i]);CHKERRQ(ierr); 1115 } 1116 ierr = PetscFree(pcbddc->ISForDofs);CHKERRQ(ierr); 1117 /* last user setting takes precendence -> destroy any other customization */ 1118 for (i=0;i<pcbddc->n_ISForDofsLocal;i++) { 1119 ierr = ISDestroy(&pcbddc->ISForDofsLocal[i]);CHKERRQ(ierr); 1120 } 1121 ierr = PetscFree(pcbddc->ISForDofsLocal);CHKERRQ(ierr); 1122 pcbddc->n_ISForDofsLocal = 0; 1123 /* allocate space then set */ 1124 if (n_is) { 1125 ierr = PetscMalloc1(n_is,&pcbddc->ISForDofs);CHKERRQ(ierr); 1126 } 1127 for (i=0;i<n_is;i++) { 1128 pcbddc->ISForDofs[i] = ISForDofs[i]; 1129 } 1130 pcbddc->n_ISForDofs = n_is; 1131 if (n_is) pcbddc->user_provided_isfordofs = PETSC_TRUE; 1132 if (!isequal) pcbddc->recompute_topography = PETSC_TRUE; 1133 PetscFunctionReturn(0); 1134 } 1135 1136 #undef __FUNCT__ 1137 #define __FUNCT__ "PCBDDCSetDofsSplitting" 1138 /*@ 1139 PCBDDCSetDofsSplitting - Set index sets defining fields of the global matrix 1140 1141 Collective 1142 1143 Input Parameters: 1144 + pc - the preconditioning context 1145 . n_is - number of index sets defining the fields 1146 - ISForDofs - array of IS describing the fields in global ordering 1147 1148 Level: intermediate 1149 1150 Notes: 1151 Any process can list any global node. Not all nodes need to be listed: unlisted nodes will belong to the complement field. 1152 1153 .seealso: PCBDDC 1154 @*/ 1155 PetscErrorCode PCBDDCSetDofsSplitting(PC pc,PetscInt n_is, IS ISForDofs[]) 1156 { 1157 PetscInt i; 1158 PetscErrorCode ierr; 1159 1160 PetscFunctionBegin; 1161 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 1162 PetscValidLogicalCollectiveInt(pc,n_is,2); 1163 for (i=0;i<n_is;i++) { 1164 PetscCheckSameComm(pc,1,ISForDofs[i],3); 1165 PetscValidHeaderSpecific(ISForDofs[i],IS_CLASSID,3); 1166 } 1167 ierr = PetscTryMethod(pc,"PCBDDCSetDofsSplitting_C",(PC,PetscInt,IS[]),(pc,n_is,ISForDofs));CHKERRQ(ierr); 1168 PetscFunctionReturn(0); 1169 } 1170 1171 #undef __FUNCT__ 1172 #define __FUNCT__ "PCPreSolve_BDDC" 1173 /* 1174 PCPreSolve_BDDC - Changes the right hand side and (if necessary) the initial 1175 guess if a transformation of basis approach has been selected. 1176 1177 Input Parameter: 1178 + pc - the preconditioner contex 1179 1180 Application Interface Routine: PCPreSolve() 1181 1182 Notes: 1183 The interface routine PCPreSolve() is not usually called directly by 1184 the user, but instead is called by KSPSolve(). 1185 */ 1186 static PetscErrorCode PCPreSolve_BDDC(PC pc, KSP ksp, Vec rhs, Vec x) 1187 { 1188 PetscErrorCode ierr; 1189 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 1190 PC_IS *pcis = (PC_IS*)(pc->data); 1191 Vec used_vec; 1192 PetscBool save_rhs = PETSC_TRUE, benign_correction_computed; 1193 1194 PetscFunctionBegin; 1195 /* if we are working with CG, one dirichlet solve can be avoided during Krylov iterations */ 1196 if (ksp) { 1197 PetscBool iscg, isgroppcg, ispipecg, ispipecgrr; 1198 ierr = PetscObjectTypeCompare((PetscObject)ksp,KSPCG,&iscg);CHKERRQ(ierr); 1199 ierr = PetscObjectTypeCompare((PetscObject)ksp,KSPGROPPCG,&isgroppcg);CHKERRQ(ierr); 1200 ierr = PetscObjectTypeCompare((PetscObject)ksp,KSPPIPECG,&ispipecg);CHKERRQ(ierr); 1201 ierr = PetscObjectTypeCompare((PetscObject)ksp,KSPPIPECGRR,&ispipecgrr);CHKERRQ(ierr); 1202 if (pcbddc->benign_apply_coarse_only || pcbddc->switch_static || (!iscg && !isgroppcg && !ispipecg && !ispipecgrr)) { 1203 ierr = PCBDDCSetUseExactDirichlet(pc,PETSC_FALSE);CHKERRQ(ierr); 1204 } 1205 } 1206 if (pcbddc->benign_apply_coarse_only || pcbddc->switch_static) { 1207 ierr = PCBDDCSetUseExactDirichlet(pc,PETSC_FALSE);CHKERRQ(ierr); 1208 } 1209 1210 /* Creates parallel work vectors used in presolve */ 1211 if (!pcbddc->original_rhs) { 1212 ierr = VecDuplicate(pcis->vec1_global,&pcbddc->original_rhs);CHKERRQ(ierr); 1213 } 1214 if (!pcbddc->temp_solution) { 1215 ierr = VecDuplicate(pcis->vec1_global,&pcbddc->temp_solution);CHKERRQ(ierr); 1216 } 1217 1218 pcbddc->temp_solution_used = PETSC_FALSE; 1219 if (x) { 1220 ierr = PetscObjectReference((PetscObject)x);CHKERRQ(ierr); 1221 used_vec = x; 1222 } else { /* it can only happen when calling PCBDDCMatFETIDPGetRHS */ 1223 ierr = PetscObjectReference((PetscObject)pcbddc->temp_solution);CHKERRQ(ierr); 1224 used_vec = pcbddc->temp_solution; 1225 ierr = VecSet(used_vec,0.0);CHKERRQ(ierr); 1226 pcbddc->temp_solution_used = PETSC_TRUE; 1227 ierr = VecCopy(rhs,pcbddc->original_rhs);CHKERRQ(ierr); 1228 save_rhs = PETSC_FALSE; 1229 pcbddc->eliminate_dirdofs = PETSC_TRUE; 1230 } 1231 1232 /* hack into ksp data structure since PCPreSolve comes earlier than setting to zero the guess in src/ksp/ksp/interface/itfunc.c */ 1233 if (ksp) { 1234 /* store the flag for the initial guess since it will be restored back during PCPostSolve_BDDC */ 1235 ierr = KSPGetInitialGuessNonzero(ksp,&pcbddc->ksp_guess_nonzero);CHKERRQ(ierr); 1236 if (!pcbddc->ksp_guess_nonzero) { 1237 ierr = VecSet(used_vec,0.0);CHKERRQ(ierr); 1238 } 1239 } 1240 1241 pcbddc->rhs_change = PETSC_FALSE; 1242 /* Take into account zeroed rows -> change rhs and store solution removed */ 1243 if (rhs && pcbddc->eliminate_dirdofs) { 1244 IS dirIS = NULL; 1245 1246 /* DirichletBoundariesLocal may not be consistent among neighbours; gets a dirichlet dofs IS from graph (may be cached) */ 1247 ierr = PCBDDCGraphGetDirichletDofs(pcbddc->mat_graph,&dirIS);CHKERRQ(ierr); 1248 if (dirIS) { 1249 Mat_IS *matis = (Mat_IS*)pc->pmat->data; 1250 PetscInt dirsize,i,*is_indices; 1251 PetscScalar *array_x; 1252 const PetscScalar *array_diagonal; 1253 1254 ierr = MatGetDiagonal(pc->pmat,pcis->vec1_global);CHKERRQ(ierr); 1255 ierr = VecPointwiseDivide(pcis->vec1_global,rhs,pcis->vec1_global);CHKERRQ(ierr); 1256 ierr = VecScatterBegin(matis->rctx,pcis->vec1_global,pcis->vec2_N,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1257 ierr = VecScatterEnd(matis->rctx,pcis->vec1_global,pcis->vec2_N,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1258 ierr = VecScatterBegin(matis->rctx,used_vec,pcis->vec1_N,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1259 ierr = VecScatterEnd(matis->rctx,used_vec,pcis->vec1_N,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1260 ierr = ISGetLocalSize(dirIS,&dirsize);CHKERRQ(ierr); 1261 ierr = VecGetArray(pcis->vec1_N,&array_x);CHKERRQ(ierr); 1262 ierr = VecGetArrayRead(pcis->vec2_N,&array_diagonal);CHKERRQ(ierr); 1263 ierr = ISGetIndices(dirIS,(const PetscInt**)&is_indices);CHKERRQ(ierr); 1264 for (i=0; i<dirsize; i++) array_x[is_indices[i]] = array_diagonal[is_indices[i]]; 1265 ierr = ISRestoreIndices(dirIS,(const PetscInt**)&is_indices);CHKERRQ(ierr); 1266 ierr = VecRestoreArrayRead(pcis->vec2_N,&array_diagonal);CHKERRQ(ierr); 1267 ierr = VecRestoreArray(pcis->vec1_N,&array_x);CHKERRQ(ierr); 1268 ierr = VecScatterBegin(matis->rctx,pcis->vec1_N,used_vec,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1269 ierr = VecScatterEnd(matis->rctx,pcis->vec1_N,used_vec,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1270 pcbddc->rhs_change = PETSC_TRUE; 1271 ierr = ISDestroy(&dirIS);CHKERRQ(ierr); 1272 } 1273 } 1274 1275 /* remove the computed solution or the initial guess from the rhs */ 1276 if (pcbddc->rhs_change || (ksp && pcbddc->ksp_guess_nonzero) ) { 1277 /* save the original rhs */ 1278 if (save_rhs) { 1279 ierr = VecSwap(rhs,pcbddc->original_rhs);CHKERRQ(ierr); 1280 save_rhs = PETSC_FALSE; 1281 } 1282 pcbddc->rhs_change = PETSC_TRUE; 1283 ierr = VecScale(used_vec,-1.0);CHKERRQ(ierr); 1284 ierr = MatMultAdd(pc->mat,used_vec,pcbddc->original_rhs,rhs);CHKERRQ(ierr); 1285 ierr = VecScale(used_vec,-1.0);CHKERRQ(ierr); 1286 ierr = VecCopy(used_vec,pcbddc->temp_solution);CHKERRQ(ierr); 1287 pcbddc->temp_solution_used = PETSC_TRUE; 1288 if (ksp) { 1289 ierr = KSPSetInitialGuessNonzero(ksp,PETSC_FALSE);CHKERRQ(ierr); 1290 } 1291 } 1292 ierr = VecDestroy(&used_vec);CHKERRQ(ierr); 1293 1294 /* compute initial vector in benign space if needed 1295 and remove non-benign solution from the rhs */ 1296 benign_correction_computed = PETSC_FALSE; 1297 if (rhs && pcbddc->benign_compute_correction && pcbddc->benign_have_null) { 1298 /* compute u^*_h using ideas similar to those in Xuemin Tu's PhD thesis (see Section 4.8.1) 1299 Recursively apply BDDC in the multilevel case */ 1300 if (!pcbddc->benign_vec) { 1301 ierr = VecDuplicate(rhs,&pcbddc->benign_vec);CHKERRQ(ierr); 1302 } 1303 pcbddc->benign_apply_coarse_only = PETSC_TRUE; 1304 if (!pcbddc->benign_skip_correction) { 1305 ierr = PCApply_BDDC(pc,rhs,pcbddc->benign_vec);CHKERRQ(ierr); 1306 benign_correction_computed = PETSC_TRUE; 1307 if (pcbddc->temp_solution_used) { 1308 ierr = VecAXPY(pcbddc->temp_solution,1.0,pcbddc->benign_vec);CHKERRQ(ierr); 1309 } 1310 ierr = VecScale(pcbddc->benign_vec,-1.0);CHKERRQ(ierr); 1311 /* store the original rhs if not done earlier */ 1312 if (save_rhs) { 1313 ierr = VecSwap(rhs,pcbddc->original_rhs);CHKERRQ(ierr); 1314 save_rhs = PETSC_FALSE; 1315 } 1316 if (pcbddc->rhs_change) { 1317 ierr = MatMultAdd(pc->mat,pcbddc->benign_vec,rhs,rhs);CHKERRQ(ierr); 1318 } else { 1319 ierr = MatMultAdd(pc->mat,pcbddc->benign_vec,pcbddc->original_rhs,rhs);CHKERRQ(ierr); 1320 } 1321 pcbddc->rhs_change = PETSC_TRUE; 1322 } 1323 pcbddc->benign_apply_coarse_only = PETSC_FALSE; 1324 } 1325 1326 /* dbg output */ 1327 if (pcbddc->dbg_flag && benign_correction_computed) { 1328 Vec v; 1329 ierr = VecDuplicate(pcis->vec1_global,&v);CHKERRQ(ierr); 1330 ierr = MatMultTranspose(pcbddc->ChangeOfBasisMatrix,rhs,v);CHKERRQ(ierr); 1331 ierr = PCBDDCBenignGetOrSetP0(pc,v,PETSC_TRUE);CHKERRQ(ierr); 1332 ierr = PetscViewerASCIIPrintf(pcbddc->dbg_viewer,"LEVEL %d: is the correction benign?\n",pcbddc->current_level);CHKERRQ(ierr); 1333 ierr = PetscScalarView(pcbddc->benign_n,pcbddc->benign_p0,PETSC_VIEWER_STDOUT_(PetscObjectComm((PetscObject)pc)));CHKERRQ(ierr); 1334 ierr = VecDestroy(&v);CHKERRQ(ierr); 1335 } 1336 1337 /* set initial guess if using PCG */ 1338 pcbddc->exact_dirichlet_trick_app = PETSC_FALSE; 1339 if (x && pcbddc->use_exact_dirichlet_trick) { 1340 ierr = VecSet(x,0.0);CHKERRQ(ierr); 1341 if (pcbddc->ChangeOfBasisMatrix && pcbddc->change_interior) { 1342 if (benign_correction_computed) { /* we have already saved the changed rhs */ 1343 ierr = VecLockPop(pcis->vec1_global);CHKERRQ(ierr); 1344 } else { 1345 ierr = MatMultTranspose(pcbddc->ChangeOfBasisMatrix,rhs,pcis->vec1_global);CHKERRQ(ierr); 1346 } 1347 ierr = VecScatterBegin(pcis->global_to_D,pcis->vec1_global,pcis->vec1_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1348 ierr = VecScatterEnd(pcis->global_to_D,pcis->vec1_global,pcis->vec1_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1349 } else { 1350 ierr = VecScatterBegin(pcis->global_to_D,rhs,pcis->vec1_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1351 ierr = VecScatterEnd(pcis->global_to_D,rhs,pcis->vec1_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1352 } 1353 ierr = KSPSolve(pcbddc->ksp_D,pcis->vec1_D,pcis->vec2_D);CHKERRQ(ierr); 1354 if (pcbddc->ChangeOfBasisMatrix && pcbddc->change_interior) { 1355 ierr = VecSet(pcis->vec1_global,0.);CHKERRQ(ierr); 1356 ierr = VecScatterBegin(pcis->global_to_D,pcis->vec2_D,pcis->vec1_global,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1357 ierr = VecScatterEnd(pcis->global_to_D,pcis->vec2_D,pcis->vec1_global,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1358 ierr = MatMult(pcbddc->ChangeOfBasisMatrix,pcis->vec1_global,x);CHKERRQ(ierr); 1359 } else { 1360 ierr = VecScatterBegin(pcis->global_to_D,pcis->vec2_D,x,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1361 ierr = VecScatterEnd(pcis->global_to_D,pcis->vec2_D,x,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1362 } 1363 if (ksp) { 1364 ierr = KSPSetInitialGuessNonzero(ksp,PETSC_TRUE);CHKERRQ(ierr); 1365 } 1366 pcbddc->exact_dirichlet_trick_app = PETSC_TRUE; 1367 } else if (pcbddc->ChangeOfBasisMatrix && pcbddc->change_interior && benign_correction_computed && pcbddc->use_exact_dirichlet_trick) { 1368 ierr = VecLockPop(pcis->vec1_global);CHKERRQ(ierr); 1369 } 1370 PetscFunctionReturn(0); 1371 } 1372 1373 #undef __FUNCT__ 1374 #define __FUNCT__ "PCPostSolve_BDDC" 1375 /* 1376 PCPostSolve_BDDC - Changes the computed solution if a transformation of basis 1377 approach has been selected. Also, restores rhs to its original state. 1378 1379 Input Parameter: 1380 + pc - the preconditioner contex 1381 1382 Application Interface Routine: PCPostSolve() 1383 1384 Notes: 1385 The interface routine PCPostSolve() is not usually called directly by 1386 the user, but instead is called by KSPSolve(). 1387 */ 1388 static PetscErrorCode PCPostSolve_BDDC(PC pc, KSP ksp, Vec rhs, Vec x) 1389 { 1390 PetscErrorCode ierr; 1391 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 1392 1393 PetscFunctionBegin; 1394 /* add solution removed in presolve */ 1395 if (x && pcbddc->rhs_change) { 1396 if (pcbddc->temp_solution_used) { 1397 ierr = VecAXPY(x,1.0,pcbddc->temp_solution);CHKERRQ(ierr); 1398 } else if (pcbddc->benign_compute_correction) { 1399 ierr = VecAXPY(x,-1.0,pcbddc->benign_vec);CHKERRQ(ierr); 1400 } 1401 } 1402 pcbddc->temp_solution_used = PETSC_FALSE; 1403 1404 /* restore rhs to its original state (not needed for FETI-DP) */ 1405 if (rhs && pcbddc->rhs_change) { 1406 ierr = VecSwap(rhs,pcbddc->original_rhs);CHKERRQ(ierr); 1407 } 1408 pcbddc->rhs_change = PETSC_FALSE; 1409 /* restore ksp guess state */ 1410 if (ksp) { 1411 ierr = KSPSetInitialGuessNonzero(ksp,pcbddc->ksp_guess_nonzero);CHKERRQ(ierr); 1412 } 1413 /* reset flag for exact dirichlet trick */ 1414 pcbddc->exact_dirichlet_trick_app = PETSC_FALSE; 1415 PetscFunctionReturn(0); 1416 } 1417 #undef __FUNCT__ 1418 #define __FUNCT__ "PCSetUp_BDDC" 1419 /* 1420 PCSetUp_BDDC - Prepares for the use of the BDDC preconditioner 1421 by setting data structures and options. 1422 1423 Input Parameter: 1424 + pc - the preconditioner context 1425 1426 Application Interface Routine: PCSetUp() 1427 1428 Notes: 1429 The interface routine PCSetUp() is not usually called directly by 1430 the user, but instead is called by PCApply() if necessary. 1431 */ 1432 PetscErrorCode PCSetUp_BDDC(PC pc) 1433 { 1434 PetscErrorCode ierr; 1435 PC_BDDC* pcbddc = (PC_BDDC*)pc->data; 1436 Mat_IS* matis; 1437 MatNullSpace nearnullspace; 1438 IS zerodiag = NULL; 1439 PetscInt nrows,ncols; 1440 PetscBool computetopography,computesolvers,computesubschurs; 1441 PetscBool computeconstraintsmatrix; 1442 PetscBool new_nearnullspace_provided,ismatis; 1443 1444 PetscFunctionBegin; 1445 ierr = PetscObjectTypeCompare((PetscObject)pc->pmat,MATIS,&ismatis);CHKERRQ(ierr); 1446 if (!ismatis) SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_ARG_WRONG,"PCBDDC preconditioner requires matrix of type MATIS"); 1447 ierr = MatGetSize(pc->pmat,&nrows,&ncols);CHKERRQ(ierr); 1448 if (nrows != ncols) SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"PCBDDC preconditioner requires a square preconditioning matrix"); 1449 matis = (Mat_IS*)pc->pmat->data; 1450 /* the following lines of code should be replaced by a better logic between PCIS, PCNN, PCBDDC and other future nonoverlapping preconditioners */ 1451 /* For BDDC we need to define a local "Neumann" problem different to that defined in PCISSetup 1452 Also, BDDC builds its own KSP for the Dirichlet problem */ 1453 /* split work */ 1454 if (pc->setupcalled) { 1455 if (pc->flag == SAME_NONZERO_PATTERN) { 1456 computetopography = PETSC_FALSE; 1457 computesolvers = PETSC_TRUE; 1458 } else { /* DIFFERENT_NONZERO_PATTERN */ 1459 computetopography = PETSC_TRUE; 1460 computesolvers = PETSC_TRUE; 1461 } 1462 } else { 1463 computetopography = PETSC_TRUE; 1464 computesolvers = PETSC_TRUE; 1465 } 1466 if (pcbddc->recompute_topography) { 1467 computetopography = PETSC_TRUE; 1468 } 1469 pcbddc->recompute_topography = computetopography; 1470 computeconstraintsmatrix = PETSC_FALSE; 1471 1472 /* check parameters' compatibility */ 1473 if (!pcbddc->use_deluxe_scaling) pcbddc->deluxe_zerorows = PETSC_FALSE; 1474 pcbddc->adaptive_selection = (PetscBool)(pcbddc->adaptive_threshold > 0.0); 1475 pcbddc->adaptive_userdefined = (PetscBool)(pcbddc->adaptive_selection && pcbddc->adaptive_userdefined); 1476 if (pcbddc->adaptive_selection) pcbddc->use_faces = PETSC_TRUE; 1477 1478 computesubschurs = (PetscBool)(pcbddc->adaptive_selection || pcbddc->use_deluxe_scaling); 1479 if (pcbddc->switch_static) { 1480 PetscBool ismatis; 1481 ierr = PetscObjectTypeCompare((PetscObject)pc->mat,MATIS,&ismatis);CHKERRQ(ierr); 1482 if (!ismatis) SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"When the static switch is one, the iteration matrix should be of type MATIS"); 1483 } 1484 1485 /* activate all connected components if the netflux has been requested */ 1486 if (pcbddc->compute_nonetflux) { 1487 pcbddc->use_vertices = PETSC_TRUE; 1488 pcbddc->use_edges = PETSC_TRUE; 1489 pcbddc->use_faces = PETSC_TRUE; 1490 } 1491 1492 /* Get stdout for dbg */ 1493 if (pcbddc->dbg_flag) { 1494 if (!pcbddc->dbg_viewer) { 1495 pcbddc->dbg_viewer = PETSC_VIEWER_STDOUT_(PetscObjectComm((PetscObject)pc)); 1496 ierr = PetscViewerASCIIPushSynchronized(pcbddc->dbg_viewer);CHKERRQ(ierr); 1497 } 1498 ierr = PetscViewerASCIIAddTab(pcbddc->dbg_viewer,2*pcbddc->current_level);CHKERRQ(ierr); 1499 } 1500 1501 /* compute topology info in local ordering */ 1502 if (pcbddc->recompute_topography) { 1503 ierr = PCBDDCComputeLocalTopologyInfo(pc);CHKERRQ(ierr); 1504 } 1505 1506 if (pcbddc->user_ChangeOfBasisMatrix) { 1507 /* use_change_of_basis flag is used to automatically compute a change of basis from constraints */ 1508 pcbddc->use_change_of_basis = PETSC_FALSE; 1509 ierr = PCBDDCComputeLocalMatrix(pc,pcbddc->user_ChangeOfBasisMatrix);CHKERRQ(ierr); 1510 } else { 1511 ierr = MatDestroy(&pcbddc->local_mat);CHKERRQ(ierr); 1512 ierr = PetscObjectReference((PetscObject)matis->A);CHKERRQ(ierr); 1513 pcbddc->local_mat = matis->A; 1514 } 1515 1516 /* detect local disconnected subdomains if requested and not done before */ 1517 if (pcbddc->detect_disconnected && !pcbddc->n_local_subs) { 1518 ierr = MatDetectDisconnectedComponents(pcbddc->local_mat,PETSC_FALSE,&pcbddc->n_local_subs,&pcbddc->local_subs);CHKERRQ(ierr); 1519 } 1520 1521 /* 1522 Compute change of basis on local pressures (aka zerodiag dofs) 1523 This should come earlier then PCISSetUp for extracting the correct subdomain matrices 1524 */ 1525 ierr = PCBDDCBenignShellMat(pc,PETSC_TRUE);CHKERRQ(ierr); 1526 if (pcbddc->benign_saddle_point) { 1527 PC_IS* pcis = (PC_IS*)pc->data; 1528 1529 if (pcbddc->user_ChangeOfBasisMatrix || pcbddc->use_change_of_basis || !computesubschurs) pcbddc->benign_change_explicit = PETSC_TRUE; 1530 /* detect local saddle point and change the basis in pcbddc->local_mat (TODO: reuse case) */ 1531 ierr = PCBDDCBenignDetectSaddlePoint(pc,&zerodiag);CHKERRQ(ierr); 1532 /* pop B0 mat from local mat */ 1533 ierr = PCBDDCBenignPopOrPushB0(pc,PETSC_TRUE);CHKERRQ(ierr); 1534 /* give pcis a hint to not reuse submatrices during PCISCreate */ 1535 if (pc->flag == SAME_NONZERO_PATTERN && pcis->reusesubmatrices == PETSC_TRUE) { 1536 if (pcbddc->benign_n && (pcbddc->benign_change_explicit || pcbddc->dbg_flag)) { 1537 pcis->reusesubmatrices = PETSC_FALSE; 1538 } else { 1539 pcis->reusesubmatrices = PETSC_TRUE; 1540 } 1541 } else { 1542 pcis->reusesubmatrices = PETSC_FALSE; 1543 } 1544 } 1545 1546 /* propagate relevant information */ 1547 #if !defined(PETSC_USE_COMPLEX) /* workaround for reals */ 1548 if (matis->A->symmetric_set) { 1549 ierr = MatSetOption(pcbddc->local_mat,MAT_HERMITIAN,matis->A->symmetric);CHKERRQ(ierr); 1550 } 1551 #endif 1552 if (matis->A->symmetric_set) { 1553 ierr = MatSetOption(pcbddc->local_mat,MAT_SYMMETRIC,matis->A->symmetric);CHKERRQ(ierr); 1554 } 1555 if (matis->A->spd_set) { 1556 ierr = MatSetOption(pcbddc->local_mat,MAT_SPD,matis->A->spd);CHKERRQ(ierr); 1557 } 1558 1559 /* Set up all the "iterative substructuring" common block without computing solvers */ 1560 { 1561 Mat temp_mat; 1562 1563 temp_mat = matis->A; 1564 matis->A = pcbddc->local_mat; 1565 ierr = PCISSetUp(pc,PETSC_FALSE);CHKERRQ(ierr); 1566 pcbddc->local_mat = matis->A; 1567 matis->A = temp_mat; 1568 } 1569 1570 /* Analyze interface */ 1571 if (computetopography) { 1572 ierr = PCBDDCAnalyzeInterface(pc);CHKERRQ(ierr); 1573 computeconstraintsmatrix = PETSC_TRUE; 1574 if (pcbddc->adaptive_selection && !pcbddc->use_deluxe_scaling && !pcbddc->mat_graph->twodim) { 1575 SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Cannot compute the adaptive primal space for a problem with 3D edges without deluxe scaling"); 1576 } 1577 if (pcbddc->compute_nonetflux) { 1578 MatNullSpace nnfnnsp; 1579 1580 ierr = PCBDDCComputeNoNetFlux(pc->pmat,pcbddc->divudotp,pcbddc->divudotp_trans,pcbddc->divudotp_vl2l,pcbddc->mat_graph,&nnfnnsp);CHKERRQ(ierr); 1581 /* TODO what if a nearnullspace is already attached? */ 1582 ierr = MatSetNearNullSpace(pc->pmat,nnfnnsp);CHKERRQ(ierr); 1583 ierr = MatNullSpaceDestroy(&nnfnnsp);CHKERRQ(ierr); 1584 } 1585 } 1586 1587 /* check existence of a divergence free extension, i.e. 1588 b(v_I,p_0) = 0 for all v_I (raise error if not). 1589 Also, check that PCBDDCBenignGetOrSetP0 works */ 1590 #if defined(PETSC_USE_DEBUG) 1591 if (pcbddc->benign_saddle_point) { 1592 ierr = PCBDDCBenignCheck(pc,zerodiag);CHKERRQ(ierr); 1593 } 1594 #endif 1595 ierr = ISDestroy(&zerodiag);CHKERRQ(ierr); 1596 1597 /* Setup local dirichlet solver ksp_D and sub_schurs solvers */ 1598 if (computesolvers) { 1599 PCBDDCSubSchurs sub_schurs; 1600 1601 if (computesubschurs && computetopography) { 1602 ierr = PCBDDCInitSubSchurs(pc);CHKERRQ(ierr); 1603 } 1604 /* SetUp Scaling operator (scaling matrices could be needed in SubSchursSetUp)*/ 1605 if (!pcbddc->use_deluxe_scaling) { 1606 ierr = PCBDDCScalingSetUp(pc);CHKERRQ(ierr); 1607 } 1608 sub_schurs = pcbddc->sub_schurs; 1609 if (sub_schurs && sub_schurs->schur_explicit) { 1610 if (computesubschurs) { 1611 ierr = PCBDDCSetUpSubSchurs(pc);CHKERRQ(ierr); 1612 } 1613 ierr = PCBDDCSetUpLocalSolvers(pc,PETSC_TRUE,PETSC_FALSE);CHKERRQ(ierr); 1614 } else { 1615 ierr = PCBDDCSetUpLocalSolvers(pc,PETSC_TRUE,PETSC_FALSE);CHKERRQ(ierr); 1616 if (computesubschurs) { 1617 ierr = PCBDDCSetUpSubSchurs(pc);CHKERRQ(ierr); 1618 } 1619 } 1620 if (pcbddc->adaptive_selection) { 1621 ierr = PCBDDCAdaptiveSelection(pc);CHKERRQ(ierr); 1622 computeconstraintsmatrix = PETSC_TRUE; 1623 } 1624 } 1625 1626 /* infer if NullSpace object attached to Mat via MatSetNearNullSpace has changed */ 1627 new_nearnullspace_provided = PETSC_FALSE; 1628 ierr = MatGetNearNullSpace(pc->pmat,&nearnullspace);CHKERRQ(ierr); 1629 if (pcbddc->onearnullspace) { /* already used nearnullspace */ 1630 if (!nearnullspace) { /* near null space attached to mat has been destroyed */ 1631 new_nearnullspace_provided = PETSC_TRUE; 1632 } else { 1633 /* determine if the two nullspaces are different (should be lightweight) */ 1634 if (nearnullspace != pcbddc->onearnullspace) { 1635 new_nearnullspace_provided = PETSC_TRUE; 1636 } else { /* maybe the user has changed the content of the nearnullspace so check vectors ObjectStateId */ 1637 PetscInt i; 1638 const Vec *nearnullvecs; 1639 PetscObjectState state; 1640 PetscInt nnsp_size; 1641 ierr = MatNullSpaceGetVecs(nearnullspace,NULL,&nnsp_size,&nearnullvecs);CHKERRQ(ierr); 1642 for (i=0;i<nnsp_size;i++) { 1643 ierr = PetscObjectStateGet((PetscObject)nearnullvecs[i],&state);CHKERRQ(ierr); 1644 if (pcbddc->onearnullvecs_state[i] != state) { 1645 new_nearnullspace_provided = PETSC_TRUE; 1646 break; 1647 } 1648 } 1649 } 1650 } 1651 } else { 1652 if (!nearnullspace) { /* both nearnullspaces are null */ 1653 new_nearnullspace_provided = PETSC_FALSE; 1654 } else { /* nearnullspace attached later */ 1655 new_nearnullspace_provided = PETSC_TRUE; 1656 } 1657 } 1658 1659 /* Setup constraints and related work vectors */ 1660 /* reset primal space flags */ 1661 pcbddc->new_primal_space = PETSC_FALSE; 1662 pcbddc->new_primal_space_local = PETSC_FALSE; 1663 if (computeconstraintsmatrix || new_nearnullspace_provided) { 1664 /* It also sets the primal space flags */ 1665 ierr = PCBDDCConstraintsSetUp(pc);CHKERRQ(ierr); 1666 /* Allocate needed local vectors (which depends on quantities defined during ConstraintsSetUp) */ 1667 ierr = PCBDDCSetUpLocalWorkVectors(pc);CHKERRQ(ierr); 1668 } 1669 1670 if (computesolvers || pcbddc->new_primal_space) { 1671 if (pcbddc->use_change_of_basis) { 1672 PC_IS *pcis = (PC_IS*)(pc->data); 1673 1674 ierr = PCBDDCComputeLocalMatrix(pc,pcbddc->ChangeOfBasisMatrix);CHKERRQ(ierr); 1675 if (pcbddc->benign_change) { 1676 ierr = MatDestroy(&pcbddc->benign_B0);CHKERRQ(ierr); 1677 /* pop B0 from pcbddc->local_mat */ 1678 ierr = PCBDDCBenignPopOrPushB0(pc,PETSC_TRUE);CHKERRQ(ierr); 1679 } 1680 /* get submatrices */ 1681 ierr = MatDestroy(&pcis->A_IB);CHKERRQ(ierr); 1682 ierr = MatDestroy(&pcis->A_BI);CHKERRQ(ierr); 1683 ierr = MatDestroy(&pcis->A_BB);CHKERRQ(ierr); 1684 ierr = MatGetSubMatrix(pcbddc->local_mat,pcis->is_B_local,pcis->is_B_local,MAT_INITIAL_MATRIX,&pcis->A_BB);CHKERRQ(ierr); 1685 ierr = MatGetSubMatrix(pcbddc->local_mat,pcis->is_I_local,pcis->is_B_local,MAT_INITIAL_MATRIX,&pcis->A_IB);CHKERRQ(ierr); 1686 ierr = MatGetSubMatrix(pcbddc->local_mat,pcis->is_B_local,pcis->is_I_local,MAT_INITIAL_MATRIX,&pcis->A_BI);CHKERRQ(ierr); 1687 /* set flag in pcis to not reuse submatrices during PCISCreate */ 1688 pcis->reusesubmatrices = PETSC_FALSE; 1689 } else if (!pcbddc->user_ChangeOfBasisMatrix && !pcbddc->benign_change) { 1690 ierr = MatDestroy(&pcbddc->local_mat);CHKERRQ(ierr); 1691 ierr = PetscObjectReference((PetscObject)matis->A);CHKERRQ(ierr); 1692 pcbddc->local_mat = matis->A; 1693 } 1694 /* SetUp coarse and local Neumann solvers */ 1695 ierr = PCBDDCSetUpSolvers(pc);CHKERRQ(ierr); 1696 /* SetUp Scaling operator */ 1697 if (pcbddc->use_deluxe_scaling) { 1698 ierr = PCBDDCScalingSetUp(pc);CHKERRQ(ierr); 1699 } 1700 } 1701 /* mark topography as done */ 1702 pcbddc->recompute_topography = PETSC_FALSE; 1703 1704 /* wrap pcis->A_IB and pcis->A_BI if we did not change explicitly the variables on the pressures */ 1705 ierr = PCBDDCBenignShellMat(pc,PETSC_FALSE);CHKERRQ(ierr); 1706 1707 if (pcbddc->dbg_flag) { 1708 ierr = PetscViewerASCIISubtractTab(pcbddc->dbg_viewer,2*pcbddc->current_level);CHKERRQ(ierr); 1709 } 1710 PetscFunctionReturn(0); 1711 } 1712 1713 /* 1714 PCApply_BDDC - Applies the BDDC operator to a vector. 1715 1716 Input Parameters: 1717 + pc - the preconditioner context 1718 - r - input vector (global) 1719 1720 Output Parameter: 1721 . z - output vector (global) 1722 1723 Application Interface Routine: PCApply() 1724 */ 1725 #undef __FUNCT__ 1726 #define __FUNCT__ "PCApply_BDDC" 1727 PetscErrorCode PCApply_BDDC(PC pc,Vec r,Vec z) 1728 { 1729 PC_IS *pcis = (PC_IS*)(pc->data); 1730 PC_BDDC *pcbddc = (PC_BDDC*)(pc->data); 1731 PetscInt n_B = pcis->n_B, n_D = pcis->n - n_B; 1732 PetscErrorCode ierr; 1733 const PetscScalar one = 1.0; 1734 const PetscScalar m_one = -1.0; 1735 const PetscScalar zero = 0.0; 1736 1737 /* This code is similar to that provided in nn.c for PCNN 1738 NN interface preconditioner changed to BDDC 1739 Added support for M_3 preconditioner in the reference article (code is active if pcbddc->switch_static == PETSC_TRUE) */ 1740 1741 PetscFunctionBegin; 1742 if (pcbddc->ChangeOfBasisMatrix) { 1743 Vec swap; 1744 1745 ierr = MatMultTranspose(pcbddc->ChangeOfBasisMatrix,r,pcbddc->work_change);CHKERRQ(ierr); 1746 swap = pcbddc->work_change; 1747 pcbddc->work_change = r; 1748 r = swap; 1749 /* save rhs so that we don't need to apply the change of basis for the exact dirichlet trick in PreSolve */ 1750 if (pcbddc->benign_apply_coarse_only && pcbddc->exact_dirichlet_trick_app && pcbddc->change_interior) { 1751 ierr = VecCopy(r,pcis->vec1_global);CHKERRQ(ierr); 1752 ierr = VecLockPush(pcis->vec1_global);CHKERRQ(ierr); 1753 } 1754 } 1755 if (pcbddc->benign_have_null) { /* get p0 from r */ 1756 ierr = PCBDDCBenignGetOrSetP0(pc,r,PETSC_TRUE);CHKERRQ(ierr); 1757 } 1758 if (!pcbddc->exact_dirichlet_trick_app && !pcbddc->benign_apply_coarse_only) { 1759 ierr = VecCopy(r,z);CHKERRQ(ierr); 1760 /* First Dirichlet solve */ 1761 ierr = VecScatterBegin(pcis->global_to_D,r,pcis->vec1_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1762 ierr = VecScatterEnd(pcis->global_to_D,r,pcis->vec1_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1763 /* 1764 Assembling right hand side for BDDC operator 1765 - pcis->vec1_D for the Dirichlet part (if needed, i.e. pcbddc->switch_static == PETSC_TRUE) 1766 - pcis->vec1_B the interface part of the global vector z 1767 */ 1768 if (n_D) { 1769 ierr = KSPSolve(pcbddc->ksp_D,pcis->vec1_D,pcis->vec2_D);CHKERRQ(ierr); 1770 ierr = VecScale(pcis->vec2_D,m_one);CHKERRQ(ierr); 1771 if (pcbddc->switch_static) { 1772 Mat_IS *matis = (Mat_IS*)(pc->mat->data); 1773 1774 ierr = VecSet(pcis->vec1_N,0.);CHKERRQ(ierr); 1775 ierr = VecScatterBegin(pcis->N_to_D,pcis->vec2_D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1776 ierr = VecScatterEnd(pcis->N_to_D,pcis->vec2_D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1777 if (!pcbddc->switch_static_change) { 1778 ierr = MatMult(matis->A,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1779 } else { 1780 ierr = MatMult(pcbddc->switch_static_change,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1781 ierr = MatMult(matis->A,pcis->vec2_N,pcis->vec1_N);CHKERRQ(ierr); 1782 ierr = MatMultTranspose(pcbddc->switch_static_change,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1783 } 1784 ierr = VecScatterBegin(pcis->N_to_D,pcis->vec2_N,pcis->vec1_D,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1785 ierr = VecScatterEnd(pcis->N_to_D,pcis->vec2_N,pcis->vec1_D,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1786 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec2_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1787 ierr = VecScatterEnd(pcis->N_to_B,pcis->vec2_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1788 } else { 1789 ierr = MatMult(pcis->A_BI,pcis->vec2_D,pcis->vec1_B);CHKERRQ(ierr); 1790 } 1791 } else { 1792 ierr = VecSet(pcis->vec1_B,zero);CHKERRQ(ierr); 1793 } 1794 ierr = VecScatterBegin(pcis->global_to_B,pcis->vec1_B,z,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1795 ierr = VecScatterEnd(pcis->global_to_B,pcis->vec1_B,z,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1796 ierr = PCBDDCScalingRestriction(pc,z,pcis->vec1_B);CHKERRQ(ierr); 1797 } else { 1798 if (!pcbddc->benign_apply_coarse_only) { 1799 ierr = PCBDDCScalingRestriction(pc,r,pcis->vec1_B);CHKERRQ(ierr); 1800 } 1801 } 1802 1803 /* Apply interface preconditioner 1804 input/output vecs: pcis->vec1_B and pcis->vec1_D */ 1805 ierr = PCBDDCApplyInterfacePreconditioner(pc,PETSC_FALSE);CHKERRQ(ierr); 1806 1807 /* Apply transpose of partition of unity operator */ 1808 ierr = PCBDDCScalingExtension(pc,pcis->vec1_B,z);CHKERRQ(ierr); 1809 1810 /* Second Dirichlet solve and assembling of output */ 1811 ierr = VecScatterBegin(pcis->global_to_B,z,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1812 ierr = VecScatterEnd(pcis->global_to_B,z,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1813 if (n_B) { 1814 if (pcbddc->switch_static) { 1815 Mat_IS *matis = (Mat_IS*)(pc->mat->data); 1816 1817 ierr = VecScatterBegin(pcis->N_to_D,pcis->vec1_D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1818 ierr = VecScatterEnd(pcis->N_to_D,pcis->vec1_D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1819 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_B,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1820 ierr = VecScatterEnd(pcis->N_to_B,pcis->vec1_B,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1821 if (!pcbddc->switch_static_change) { 1822 ierr = MatMult(matis->A,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1823 } else { 1824 ierr = MatMult(pcbddc->switch_static_change,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1825 ierr = MatMult(matis->A,pcis->vec2_N,pcis->vec1_N);CHKERRQ(ierr); 1826 ierr = MatMultTranspose(pcbddc->switch_static_change,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1827 } 1828 ierr = VecScatterBegin(pcis->N_to_D,pcis->vec2_N,pcis->vec3_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1829 ierr = VecScatterEnd(pcis->N_to_D,pcis->vec2_N,pcis->vec3_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1830 } else { 1831 ierr = MatMult(pcis->A_IB,pcis->vec1_B,pcis->vec3_D);CHKERRQ(ierr); 1832 } 1833 } else if (pcbddc->switch_static) { /* n_B is zero */ 1834 Mat_IS *matis = (Mat_IS*)(pc->mat->data); 1835 1836 if (!pcbddc->switch_static_change) { 1837 ierr = MatMult(matis->A,pcis->vec1_D,pcis->vec3_D);CHKERRQ(ierr); 1838 } else { 1839 ierr = MatMult(pcbddc->switch_static_change,pcis->vec1_D,pcis->vec1_N);CHKERRQ(ierr); 1840 ierr = MatMult(matis->A,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1841 ierr = MatMultTranspose(pcbddc->switch_static_change,pcis->vec2_N,pcis->vec3_D);CHKERRQ(ierr); 1842 } 1843 } 1844 ierr = KSPSolve(pcbddc->ksp_D,pcis->vec3_D,pcis->vec4_D);CHKERRQ(ierr); 1845 1846 if (!pcbddc->exact_dirichlet_trick_app && !pcbddc->benign_apply_coarse_only) { 1847 if (pcbddc->switch_static) { 1848 ierr = VecAXPBYPCZ(pcis->vec2_D,m_one,one,m_one,pcis->vec4_D,pcis->vec1_D);CHKERRQ(ierr); 1849 } else { 1850 ierr = VecAXPBY(pcis->vec2_D,m_one,m_one,pcis->vec4_D);CHKERRQ(ierr); 1851 } 1852 ierr = VecScatterBegin(pcis->global_to_D,pcis->vec2_D,z,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1853 ierr = VecScatterEnd(pcis->global_to_D,pcis->vec2_D,z,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1854 } else { 1855 if (pcbddc->switch_static) { 1856 ierr = VecAXPBY(pcis->vec4_D,one,m_one,pcis->vec1_D);CHKERRQ(ierr); 1857 } else { 1858 ierr = VecScale(pcis->vec4_D,m_one);CHKERRQ(ierr); 1859 } 1860 ierr = VecScatterBegin(pcis->global_to_D,pcis->vec4_D,z,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1861 ierr = VecScatterEnd(pcis->global_to_D,pcis->vec4_D,z,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1862 } 1863 if (pcbddc->benign_have_null) { /* set p0 (computed in PCBDDCApplyInterface) */ 1864 if (pcbddc->benign_apply_coarse_only) { 1865 ierr = PetscMemzero(pcbddc->benign_p0,pcbddc->benign_n*sizeof(PetscScalar));CHKERRQ(ierr); 1866 } 1867 ierr = PCBDDCBenignGetOrSetP0(pc,z,PETSC_FALSE);CHKERRQ(ierr); 1868 } 1869 1870 if (pcbddc->ChangeOfBasisMatrix) { 1871 Vec swap; 1872 1873 swap = r; 1874 r = pcbddc->work_change; 1875 pcbddc->work_change = swap; 1876 ierr = VecCopy(z,pcbddc->work_change);CHKERRQ(ierr); 1877 ierr = MatMult(pcbddc->ChangeOfBasisMatrix,pcbddc->work_change,z);CHKERRQ(ierr); 1878 } 1879 PetscFunctionReturn(0); 1880 } 1881 1882 /* 1883 PCApplyTranspose_BDDC - Applies the transpose of the BDDC operator to a vector. 1884 1885 Input Parameters: 1886 + pc - the preconditioner context 1887 - r - input vector (global) 1888 1889 Output Parameter: 1890 . z - output vector (global) 1891 1892 Application Interface Routine: PCApplyTranspose() 1893 */ 1894 #undef __FUNCT__ 1895 #define __FUNCT__ "PCApplyTranspose_BDDC" 1896 PetscErrorCode PCApplyTranspose_BDDC(PC pc,Vec r,Vec z) 1897 { 1898 PC_IS *pcis = (PC_IS*)(pc->data); 1899 PC_BDDC *pcbddc = (PC_BDDC*)(pc->data); 1900 PetscInt n_B = pcis->n_B, n_D = pcis->n - n_B; 1901 PetscErrorCode ierr; 1902 const PetscScalar one = 1.0; 1903 const PetscScalar m_one = -1.0; 1904 const PetscScalar zero = 0.0; 1905 1906 PetscFunctionBegin; 1907 if (pcbddc->ChangeOfBasisMatrix) { 1908 Vec swap; 1909 1910 ierr = MatMultTranspose(pcbddc->ChangeOfBasisMatrix,r,pcbddc->work_change);CHKERRQ(ierr); 1911 swap = pcbddc->work_change; 1912 pcbddc->work_change = r; 1913 r = swap; 1914 /* save rhs so that we don't need to apply the change of basis for the exact dirichlet trick in PreSolve */ 1915 if (pcbddc->benign_apply_coarse_only && pcbddc->exact_dirichlet_trick_app && pcbddc->change_interior) { 1916 ierr = VecCopy(r,pcis->vec1_global);CHKERRQ(ierr); 1917 ierr = VecLockPush(pcis->vec1_global);CHKERRQ(ierr); 1918 } 1919 } 1920 if (pcbddc->benign_have_null) { /* get p0 from r */ 1921 ierr = PCBDDCBenignGetOrSetP0(pc,r,PETSC_TRUE);CHKERRQ(ierr); 1922 } 1923 if (!pcbddc->exact_dirichlet_trick_app && !pcbddc->benign_apply_coarse_only) { 1924 ierr = VecCopy(r,z);CHKERRQ(ierr); 1925 /* First Dirichlet solve */ 1926 ierr = VecScatterBegin(pcis->global_to_D,r,pcis->vec1_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1927 ierr = VecScatterEnd(pcis->global_to_D,r,pcis->vec1_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1928 /* 1929 Assembling right hand side for BDDC operator 1930 - pcis->vec1_D for the Dirichlet part (if needed, i.e. pcbddc->switch_static == PETSC_TRUE) 1931 - pcis->vec1_B the interface part of the global vector z 1932 */ 1933 if (n_D) { 1934 ierr = KSPSolveTranspose(pcbddc->ksp_D,pcis->vec1_D,pcis->vec2_D);CHKERRQ(ierr); 1935 ierr = VecScale(pcis->vec2_D,m_one);CHKERRQ(ierr); 1936 if (pcbddc->switch_static) { 1937 Mat_IS *matis = (Mat_IS*)(pc->mat->data); 1938 1939 ierr = VecSet(pcis->vec1_N,0.);CHKERRQ(ierr); 1940 ierr = VecScatterBegin(pcis->N_to_D,pcis->vec2_D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1941 ierr = VecScatterEnd(pcis->N_to_D,pcis->vec2_D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1942 if (!pcbddc->switch_static_change) { 1943 ierr = MatMultTranspose(matis->A,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1944 } else { 1945 ierr = MatMult(pcbddc->switch_static_change,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1946 ierr = MatMultTranspose(matis->A,pcis->vec2_N,pcis->vec1_N);CHKERRQ(ierr); 1947 ierr = MatMultTranspose(pcbddc->switch_static_change,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1948 } 1949 ierr = VecScatterBegin(pcis->N_to_D,pcis->vec2_N,pcis->vec1_D,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1950 ierr = VecScatterEnd(pcis->N_to_D,pcis->vec2_N,pcis->vec1_D,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1951 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec2_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1952 ierr = VecScatterEnd(pcis->N_to_B,pcis->vec2_N,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1953 } else { 1954 ierr = MatMultTranspose(pcis->A_IB,pcis->vec2_D,pcis->vec1_B);CHKERRQ(ierr); 1955 } 1956 } else { 1957 ierr = VecSet(pcis->vec1_B,zero);CHKERRQ(ierr); 1958 } 1959 ierr = VecScatterBegin(pcis->global_to_B,pcis->vec1_B,z,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1960 ierr = VecScatterEnd(pcis->global_to_B,pcis->vec1_B,z,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1961 ierr = PCBDDCScalingRestriction(pc,z,pcis->vec1_B);CHKERRQ(ierr); 1962 } else { 1963 ierr = PCBDDCScalingRestriction(pc,r,pcis->vec1_B);CHKERRQ(ierr); 1964 } 1965 1966 /* Apply interface preconditioner 1967 input/output vecs: pcis->vec1_B and pcis->vec1_D */ 1968 ierr = PCBDDCApplyInterfacePreconditioner(pc,PETSC_TRUE);CHKERRQ(ierr); 1969 1970 /* Apply transpose of partition of unity operator */ 1971 ierr = PCBDDCScalingExtension(pc,pcis->vec1_B,z);CHKERRQ(ierr); 1972 1973 /* Second Dirichlet solve and assembling of output */ 1974 ierr = VecScatterBegin(pcis->global_to_B,z,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1975 ierr = VecScatterEnd(pcis->global_to_B,z,pcis->vec1_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1976 if (n_B) { 1977 if (pcbddc->switch_static) { 1978 Mat_IS *matis = (Mat_IS*)(pc->mat->data); 1979 1980 ierr = VecScatterBegin(pcis->N_to_D,pcis->vec1_D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1981 ierr = VecScatterEnd(pcis->N_to_D,pcis->vec1_D,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1982 ierr = VecScatterBegin(pcis->N_to_B,pcis->vec1_B,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1983 ierr = VecScatterEnd(pcis->N_to_B,pcis->vec1_B,pcis->vec1_N,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 1984 if (!pcbddc->switch_static_change) { 1985 ierr = MatMultTranspose(matis->A,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1986 } else { 1987 ierr = MatMult(pcbddc->switch_static_change,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1988 ierr = MatMultTranspose(matis->A,pcis->vec2_N,pcis->vec1_N);CHKERRQ(ierr); 1989 ierr = MatMultTranspose(pcbddc->switch_static_change,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 1990 } 1991 ierr = VecScatterBegin(pcis->N_to_D,pcis->vec2_N,pcis->vec3_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1992 ierr = VecScatterEnd(pcis->N_to_D,pcis->vec2_N,pcis->vec3_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1993 } else { 1994 ierr = MatMultTranspose(pcis->A_BI,pcis->vec1_B,pcis->vec3_D);CHKERRQ(ierr); 1995 } 1996 } else if (pcbddc->switch_static) { /* n_B is zero */ 1997 Mat_IS *matis = (Mat_IS*)(pc->mat->data); 1998 1999 if (!pcbddc->switch_static_change) { 2000 ierr = MatMultTranspose(matis->A,pcis->vec1_D,pcis->vec3_D);CHKERRQ(ierr); 2001 } else { 2002 ierr = MatMult(pcbddc->switch_static_change,pcis->vec1_D,pcis->vec1_N);CHKERRQ(ierr); 2003 ierr = MatMultTranspose(matis->A,pcis->vec1_N,pcis->vec2_N);CHKERRQ(ierr); 2004 ierr = MatMultTranspose(pcbddc->switch_static_change,pcis->vec2_N,pcis->vec3_D);CHKERRQ(ierr); 2005 } 2006 } 2007 ierr = KSPSolveTranspose(pcbddc->ksp_D,pcis->vec3_D,pcis->vec4_D);CHKERRQ(ierr); 2008 if (!pcbddc->exact_dirichlet_trick_app && !pcbddc->benign_apply_coarse_only) { 2009 if (pcbddc->switch_static) { 2010 ierr = VecAXPBYPCZ(pcis->vec2_D,m_one,one,m_one,pcis->vec4_D,pcis->vec1_D);CHKERRQ(ierr); 2011 } else { 2012 ierr = VecAXPBY(pcis->vec2_D,m_one,m_one,pcis->vec4_D);CHKERRQ(ierr); 2013 } 2014 ierr = VecScatterBegin(pcis->global_to_D,pcis->vec2_D,z,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2015 ierr = VecScatterEnd(pcis->global_to_D,pcis->vec2_D,z,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2016 } else { 2017 if (pcbddc->switch_static) { 2018 ierr = VecAXPBY(pcis->vec4_D,one,m_one,pcis->vec1_D);CHKERRQ(ierr); 2019 } else { 2020 ierr = VecScale(pcis->vec4_D,m_one);CHKERRQ(ierr); 2021 } 2022 ierr = VecScatterBegin(pcis->global_to_D,pcis->vec4_D,z,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2023 ierr = VecScatterEnd(pcis->global_to_D,pcis->vec4_D,z,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2024 } 2025 if (pcbddc->benign_have_null) { /* set p0 (computed in PCBDDCApplyInterface) */ 2026 ierr = PCBDDCBenignGetOrSetP0(pc,z,PETSC_FALSE);CHKERRQ(ierr); 2027 } 2028 if (pcbddc->ChangeOfBasisMatrix) { 2029 Vec swap; 2030 2031 swap = r; 2032 r = pcbddc->work_change; 2033 pcbddc->work_change = swap; 2034 ierr = VecCopy(z,pcbddc->work_change);CHKERRQ(ierr); 2035 ierr = MatMult(pcbddc->ChangeOfBasisMatrix,pcbddc->work_change,z);CHKERRQ(ierr); 2036 } 2037 PetscFunctionReturn(0); 2038 } 2039 2040 #undef __FUNCT__ 2041 #define __FUNCT__ "PCDestroy_BDDC" 2042 PetscErrorCode PCDestroy_BDDC(PC pc) 2043 { 2044 PC_BDDC *pcbddc = (PC_BDDC*)pc->data; 2045 PetscErrorCode ierr; 2046 2047 PetscFunctionBegin; 2048 /* free BDDC custom data */ 2049 ierr = PCBDDCResetCustomization(pc);CHKERRQ(ierr); 2050 /* destroy objects related to topography */ 2051 ierr = PCBDDCResetTopography(pc);CHKERRQ(ierr); 2052 /* free allocated graph structure */ 2053 ierr = PetscFree(pcbddc->mat_graph);CHKERRQ(ierr); 2054 /* free allocated sub schurs structure */ 2055 ierr = PetscFree(pcbddc->sub_schurs);CHKERRQ(ierr); 2056 /* destroy objects for scaling operator */ 2057 ierr = PCBDDCScalingDestroy(pc);CHKERRQ(ierr); 2058 ierr = PetscFree(pcbddc->deluxe_ctx);CHKERRQ(ierr); 2059 /* free solvers stuff */ 2060 ierr = PCBDDCResetSolvers(pc);CHKERRQ(ierr); 2061 /* free global vectors needed in presolve */ 2062 ierr = VecDestroy(&pcbddc->temp_solution);CHKERRQ(ierr); 2063 ierr = VecDestroy(&pcbddc->original_rhs);CHKERRQ(ierr); 2064 /* free data created by PCIS */ 2065 ierr = PCISDestroy(pc);CHKERRQ(ierr); 2066 /* remove functions */ 2067 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDivergenceMat_C",NULL);CHKERRQ(ierr); 2068 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetChangeOfBasisMat_C",NULL);CHKERRQ(ierr); 2069 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetPrimalVerticesLocalIS_C",NULL);CHKERRQ(ierr); 2070 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetPrimalVerticesIS_C",NULL);CHKERRQ(ierr); 2071 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetCoarseningRatio_C",NULL);CHKERRQ(ierr); 2072 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetLevel_C",NULL);CHKERRQ(ierr); 2073 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetUseExactDirichlet_C",NULL);CHKERRQ(ierr); 2074 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetLevels_C",NULL);CHKERRQ(ierr); 2075 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDirichletBoundaries_C",NULL);CHKERRQ(ierr); 2076 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDirichletBoundariesLocal_C",NULL);CHKERRQ(ierr); 2077 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetNeumannBoundaries_C",NULL);CHKERRQ(ierr); 2078 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetNeumannBoundariesLocal_C",NULL);CHKERRQ(ierr); 2079 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCGetDirichletBoundaries_C",NULL);CHKERRQ(ierr); 2080 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCGetDirichletBoundariesLocal_C",NULL);CHKERRQ(ierr); 2081 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCGetNeumannBoundaries_C",NULL);CHKERRQ(ierr); 2082 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCGetNeumannBoundariesLocal_C",NULL);CHKERRQ(ierr); 2083 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDofsSplitting_C",NULL);CHKERRQ(ierr); 2084 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDofsSplittingLocal_C",NULL);CHKERRQ(ierr); 2085 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetLocalAdjacencyGraph_C",NULL);CHKERRQ(ierr); 2086 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCCreateFETIDPOperators_C",NULL);CHKERRQ(ierr); 2087 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCMatFETIDPGetRHS_C",NULL);CHKERRQ(ierr); 2088 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCMatFETIDPGetSolution_C",NULL);CHKERRQ(ierr); 2089 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCPreSolveChangeRHS_C",NULL);CHKERRQ(ierr); 2090 /* Free the private data structure */ 2091 ierr = PetscFree(pc->data);CHKERRQ(ierr); 2092 PetscFunctionReturn(0); 2093 } 2094 2095 #undef __FUNCT__ 2096 #define __FUNCT__ "PCPreSolveChangeRHS_BDDC" 2097 static PetscErrorCode PCPreSolveChangeRHS_BDDC(PC pc, PetscBool* change) 2098 { 2099 PetscFunctionBegin; 2100 *change = PETSC_TRUE; 2101 PetscFunctionReturn(0); 2102 } 2103 2104 #undef __FUNCT__ 2105 #define __FUNCT__ "PCBDDCMatFETIDPGetRHS_BDDC" 2106 static PetscErrorCode PCBDDCMatFETIDPGetRHS_BDDC(Mat fetidp_mat, Vec standard_rhs, Vec fetidp_flux_rhs) 2107 { 2108 FETIDPMat_ctx mat_ctx; 2109 Vec work; 2110 PC_IS* pcis; 2111 PC_BDDC* pcbddc; 2112 PetscErrorCode ierr; 2113 2114 PetscFunctionBegin; 2115 ierr = MatShellGetContext(fetidp_mat,&mat_ctx);CHKERRQ(ierr); 2116 pcis = (PC_IS*)mat_ctx->pc->data; 2117 pcbddc = (PC_BDDC*)mat_ctx->pc->data; 2118 2119 /* 2120 change of basis for physical rhs if needed 2121 It also changes the rhs in case of dirichlet boundaries 2122 */ 2123 if (!pcbddc->original_rhs) { 2124 ierr = VecDuplicate(pcis->vec1_global,&pcbddc->original_rhs);CHKERRQ(ierr); 2125 } 2126 ierr = VecCopy(standard_rhs,pcbddc->original_rhs);CHKERRQ(ierr); 2127 ierr = PCPreSolve_BDDC(mat_ctx->pc,NULL,pcbddc->original_rhs,NULL);CHKERRQ(ierr); 2128 if (pcbddc->ChangeOfBasisMatrix) { 2129 ierr = MatMultTranspose(pcbddc->ChangeOfBasisMatrix,pcbddc->original_rhs,pcbddc->work_change);CHKERRQ(ierr); 2130 work = pcbddc->work_change; 2131 } else { 2132 work = pcbddc->original_rhs; 2133 } 2134 /* store vectors for computation of fetidp final solution */ 2135 ierr = VecScatterBegin(pcis->global_to_D,work,mat_ctx->temp_solution_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2136 ierr = VecScatterEnd(pcis->global_to_D,work,mat_ctx->temp_solution_D,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2137 /* scale rhs since it should be unassembled */ 2138 /* TODO use counter scaling? (also below) */ 2139 ierr = VecScatterBegin(pcis->global_to_B,work,mat_ctx->temp_solution_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2140 ierr = VecScatterEnd(pcis->global_to_B,work,mat_ctx->temp_solution_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2141 /* Apply partition of unity */ 2142 ierr = VecPointwiseMult(mat_ctx->temp_solution_B,pcis->D,mat_ctx->temp_solution_B);CHKERRQ(ierr); 2143 /* ierr = PCBDDCScalingRestriction(mat_ctx->pc,work,mat_ctx->temp_solution_B);CHKERRQ(ierr); */ 2144 if (!pcbddc->switch_static) { 2145 /* compute partially subassembled Schur complement right-hand side */ 2146 ierr = KSPSolve(pcbddc->ksp_D,mat_ctx->temp_solution_D,pcis->vec1_D);CHKERRQ(ierr); 2147 ierr = MatMult(pcis->A_BI,pcis->vec1_D,pcis->vec1_B);CHKERRQ(ierr); 2148 ierr = VecAXPY(mat_ctx->temp_solution_B,-1.0,pcis->vec1_B);CHKERRQ(ierr); 2149 ierr = VecSet(work,0.0);CHKERRQ(ierr); 2150 ierr = VecScatterBegin(pcis->global_to_B,mat_ctx->temp_solution_B,work,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2151 ierr = VecScatterEnd(pcis->global_to_B,mat_ctx->temp_solution_B,work,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2152 /* ierr = PCBDDCScalingRestriction(mat_ctx->pc,work,mat_ctx->temp_solution_B);CHKERRQ(ierr); */ 2153 ierr = VecScatterBegin(pcis->global_to_B,work,mat_ctx->temp_solution_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2154 ierr = VecScatterEnd(pcis->global_to_B,work,mat_ctx->temp_solution_B,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2155 ierr = VecPointwiseMult(mat_ctx->temp_solution_B,pcis->D,mat_ctx->temp_solution_B);CHKERRQ(ierr); 2156 } 2157 /* BDDC rhs */ 2158 ierr = VecCopy(mat_ctx->temp_solution_B,pcis->vec1_B);CHKERRQ(ierr); 2159 if (pcbddc->switch_static) { 2160 ierr = VecCopy(mat_ctx->temp_solution_D,pcis->vec1_D);CHKERRQ(ierr); 2161 } 2162 ierr = PetscMemzero(pcbddc->benign_p0,pcbddc->benign_n*sizeof(PetscScalar));CHKERRQ(ierr); 2163 /* apply BDDC */ 2164 ierr = PCBDDCApplyInterfacePreconditioner(mat_ctx->pc,PETSC_FALSE);CHKERRQ(ierr); 2165 ierr = PetscMemzero(pcbddc->benign_p0,pcbddc->benign_n*sizeof(PetscScalar));CHKERRQ(ierr); 2166 /* Application of B_delta and assembling of rhs for fetidp fluxes */ 2167 ierr = VecSet(fetidp_flux_rhs,0.0);CHKERRQ(ierr); 2168 ierr = MatMult(mat_ctx->B_delta,pcis->vec1_B,mat_ctx->lambda_local);CHKERRQ(ierr); 2169 ierr = VecScatterBegin(mat_ctx->l2g_lambda,mat_ctx->lambda_local,fetidp_flux_rhs,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2170 ierr = VecScatterEnd(mat_ctx->l2g_lambda,mat_ctx->lambda_local,fetidp_flux_rhs,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2171 PetscFunctionReturn(0); 2172 } 2173 2174 #undef __FUNCT__ 2175 #define __FUNCT__ "PCBDDCMatFETIDPGetRHS" 2176 /*@ 2177 PCBDDCMatFETIDPGetRHS - Compute the right-hand side for FETI-DP linear system using the physical right-hand side 2178 2179 Collective 2180 2181 Input Parameters: 2182 + fetidp_mat - the FETI-DP matrix object obtained by a call to PCBDDCCreateFETIDPOperators 2183 - standard_rhs - the right-hand side of the original linear system 2184 2185 Output Parameters: 2186 . fetidp_flux_rhs - the right-hand side for the FETI-DP linear system 2187 2188 Level: developer 2189 2190 Notes: 2191 2192 .seealso: PCBDDC, PCBDDCCreateFETIDPOperators, PCBDDCMatFETIDPGetSolution 2193 @*/ 2194 PetscErrorCode PCBDDCMatFETIDPGetRHS(Mat fetidp_mat, Vec standard_rhs, Vec fetidp_flux_rhs) 2195 { 2196 FETIDPMat_ctx mat_ctx; 2197 PetscErrorCode ierr; 2198 2199 PetscFunctionBegin; 2200 PetscValidHeaderSpecific(fetidp_mat,MAT_CLASSID,1); 2201 PetscValidHeaderSpecific(standard_rhs,VEC_CLASSID,2); 2202 PetscValidHeaderSpecific(fetidp_flux_rhs,VEC_CLASSID,3); 2203 ierr = MatShellGetContext(fetidp_mat,&mat_ctx);CHKERRQ(ierr); 2204 ierr = PetscUseMethod(mat_ctx->pc,"PCBDDCMatFETIDPGetRHS_C",(Mat,Vec,Vec),(fetidp_mat,standard_rhs,fetidp_flux_rhs));CHKERRQ(ierr); 2205 PetscFunctionReturn(0); 2206 } 2207 2208 #undef __FUNCT__ 2209 #define __FUNCT__ "PCBDDCMatFETIDPGetSolution_BDDC" 2210 static PetscErrorCode PCBDDCMatFETIDPGetSolution_BDDC(Mat fetidp_mat, Vec fetidp_flux_sol, Vec standard_sol) 2211 { 2212 FETIDPMat_ctx mat_ctx; 2213 PC_IS* pcis; 2214 PC_BDDC* pcbddc; 2215 PetscErrorCode ierr; 2216 2217 PetscFunctionBegin; 2218 ierr = MatShellGetContext(fetidp_mat,&mat_ctx);CHKERRQ(ierr); 2219 pcis = (PC_IS*)mat_ctx->pc->data; 2220 pcbddc = (PC_BDDC*)mat_ctx->pc->data; 2221 2222 /* apply B_delta^T */ 2223 ierr = VecScatterBegin(mat_ctx->l2g_lambda,fetidp_flux_sol,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2224 ierr = VecScatterEnd(mat_ctx->l2g_lambda,fetidp_flux_sol,mat_ctx->lambda_local,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2225 ierr = MatMultTranspose(mat_ctx->B_delta,mat_ctx->lambda_local,pcis->vec1_B);CHKERRQ(ierr); 2226 /* compute rhs for BDDC application */ 2227 ierr = VecAYPX(pcis->vec1_B,-1.0,mat_ctx->temp_solution_B);CHKERRQ(ierr); 2228 if (pcbddc->switch_static) { 2229 ierr = VecCopy(mat_ctx->temp_solution_D,pcis->vec1_D);CHKERRQ(ierr); 2230 } 2231 ierr = PetscMemzero(pcbddc->benign_p0,pcbddc->benign_n*sizeof(PetscScalar));CHKERRQ(ierr); 2232 /* apply BDDC */ 2233 ierr = PCBDDCApplyInterfacePreconditioner(mat_ctx->pc,PETSC_FALSE);CHKERRQ(ierr); 2234 /* put values into standard global vector */ 2235 ierr = VecScatterBegin(pcis->global_to_B,pcis->vec1_B,standard_sol,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2236 ierr = VecScatterEnd(pcis->global_to_B,pcis->vec1_B,standard_sol,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2237 if (!pcbddc->switch_static) { 2238 /* compute values into the interior if solved for the partially subassembled Schur complement */ 2239 ierr = MatMult(pcis->A_IB,pcis->vec1_B,pcis->vec1_D);CHKERRQ(ierr); 2240 ierr = VecAYPX(pcis->vec1_D,-1.0,mat_ctx->temp_solution_D);CHKERRQ(ierr); 2241 ierr = KSPSolve(pcbddc->ksp_D,pcis->vec1_D,pcis->vec1_D);CHKERRQ(ierr); 2242 } 2243 ierr = VecScatterBegin(pcis->global_to_D,pcis->vec1_D,standard_sol,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2244 ierr = VecScatterEnd(pcis->global_to_D,pcis->vec1_D,standard_sol,INSERT_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2245 /* add p0 solution to final solution */ 2246 ierr = PCBDDCBenignGetOrSetP0(mat_ctx->pc,standard_sol,PETSC_FALSE);CHKERRQ(ierr); 2247 if (pcbddc->ChangeOfBasisMatrix) { 2248 Vec v2; 2249 ierr = VecDuplicate(standard_sol,&v2);CHKERRQ(ierr); 2250 ierr = MatMult(pcbddc->ChangeOfBasisMatrix,standard_sol,v2);CHKERRQ(ierr); 2251 ierr = VecCopy(v2,standard_sol);CHKERRQ(ierr); 2252 ierr = VecDestroy(&v2);CHKERRQ(ierr); 2253 } 2254 ierr = PCPostSolve_BDDC(mat_ctx->pc,NULL,NULL,standard_sol);CHKERRQ(ierr); 2255 PetscFunctionReturn(0); 2256 } 2257 2258 #undef __FUNCT__ 2259 #define __FUNCT__ "PCBDDCMatFETIDPGetSolution" 2260 /*@ 2261 PCBDDCMatFETIDPGetSolution - Compute the physical solution using the solution of the FETI-DP linear system 2262 2263 Collective 2264 2265 Input Parameters: 2266 + fetidp_mat - the FETI-DP matrix obtained by a call to PCBDDCCreateFETIDPOperators 2267 - fetidp_flux_sol - the solution of the FETI-DP linear system 2268 2269 Output Parameters: 2270 . standard_sol - the solution defined on the physical domain 2271 2272 Level: developer 2273 2274 Notes: 2275 2276 .seealso: PCBDDC, PCBDDCCreateFETIDPOperators, PCBDDCMatFETIDPGetRHS 2277 @*/ 2278 PetscErrorCode PCBDDCMatFETIDPGetSolution(Mat fetidp_mat, Vec fetidp_flux_sol, Vec standard_sol) 2279 { 2280 FETIDPMat_ctx mat_ctx; 2281 PetscErrorCode ierr; 2282 2283 PetscFunctionBegin; 2284 PetscValidHeaderSpecific(fetidp_mat,MAT_CLASSID,1); 2285 PetscValidHeaderSpecific(fetidp_flux_sol,VEC_CLASSID,2); 2286 PetscValidHeaderSpecific(standard_sol,VEC_CLASSID,3); 2287 ierr = MatShellGetContext(fetidp_mat,&mat_ctx);CHKERRQ(ierr); 2288 ierr = PetscUseMethod(mat_ctx->pc,"PCBDDCMatFETIDPGetSolution_C",(Mat,Vec,Vec),(fetidp_mat,fetidp_flux_sol,standard_sol));CHKERRQ(ierr); 2289 PetscFunctionReturn(0); 2290 } 2291 2292 extern PetscErrorCode FETIDPMatMult(Mat,Vec,Vec); 2293 extern PetscErrorCode FETIDPMatMultTranspose(Mat,Vec,Vec); 2294 extern PetscErrorCode PCBDDCDestroyFETIDPMat(Mat); 2295 extern PetscErrorCode FETIDPPCApply(PC,Vec,Vec); 2296 extern PetscErrorCode FETIDPPCApplyTranspose(PC,Vec,Vec); 2297 extern PetscErrorCode PCBDDCDestroyFETIDPPC(PC); 2298 2299 #undef __FUNCT__ 2300 #define __FUNCT__ "PCBDDCCreateFETIDPOperators_BDDC" 2301 static PetscErrorCode PCBDDCCreateFETIDPOperators_BDDC(PC pc, PetscBool fully_redundant, Mat *fetidp_mat, PC *fetidp_pc) 2302 { 2303 2304 FETIDPMat_ctx fetidpmat_ctx; 2305 Mat newmat; 2306 FETIDPPC_ctx fetidppc_ctx; 2307 PC newpc; 2308 MPI_Comm comm; 2309 PetscErrorCode ierr; 2310 2311 PetscFunctionBegin; 2312 ierr = PetscObjectGetComm((PetscObject)pc,&comm);CHKERRQ(ierr); 2313 /* FETIDP linear matrix */ 2314 ierr = PCBDDCCreateFETIDPMatContext(pc,&fetidpmat_ctx);CHKERRQ(ierr); 2315 fetidpmat_ctx->fully_redundant = fully_redundant; 2316 ierr = PCBDDCSetupFETIDPMatContext(fetidpmat_ctx);CHKERRQ(ierr); 2317 ierr = MatCreateShell(comm,PETSC_DECIDE,PETSC_DECIDE,fetidpmat_ctx->n_lambda,fetidpmat_ctx->n_lambda,fetidpmat_ctx,&newmat);CHKERRQ(ierr); 2318 ierr = MatShellSetOperation(newmat,MATOP_MULT,(void (*)(void))FETIDPMatMult);CHKERRQ(ierr); 2319 ierr = MatShellSetOperation(newmat,MATOP_MULT_TRANSPOSE,(void (*)(void))FETIDPMatMultTranspose);CHKERRQ(ierr); 2320 ierr = MatShellSetOperation(newmat,MATOP_DESTROY,(void (*)(void))PCBDDCDestroyFETIDPMat);CHKERRQ(ierr); 2321 ierr = MatSetUp(newmat);CHKERRQ(ierr); 2322 /* FETIDP preconditioner */ 2323 ierr = PCBDDCCreateFETIDPPCContext(pc,&fetidppc_ctx);CHKERRQ(ierr); 2324 ierr = PCBDDCSetupFETIDPPCContext(newmat,fetidppc_ctx);CHKERRQ(ierr); 2325 ierr = PCCreate(comm,&newpc);CHKERRQ(ierr); 2326 ierr = PCSetType(newpc,PCSHELL);CHKERRQ(ierr); 2327 ierr = PCShellSetContext(newpc,fetidppc_ctx);CHKERRQ(ierr); 2328 ierr = PCShellSetApply(newpc,FETIDPPCApply);CHKERRQ(ierr); 2329 ierr = PCShellSetApplyTranspose(newpc,FETIDPPCApplyTranspose);CHKERRQ(ierr); 2330 ierr = PCShellSetDestroy(newpc,PCBDDCDestroyFETIDPPC);CHKERRQ(ierr); 2331 ierr = PCSetOperators(newpc,newmat,newmat);CHKERRQ(ierr); 2332 ierr = PCSetUp(newpc);CHKERRQ(ierr); 2333 /* return pointers for objects created */ 2334 *fetidp_mat=newmat; 2335 *fetidp_pc=newpc; 2336 PetscFunctionReturn(0); 2337 } 2338 2339 #undef __FUNCT__ 2340 #define __FUNCT__ "PCBDDCCreateFETIDPOperators" 2341 /*@ 2342 PCBDDCCreateFETIDPOperators - Create FETI-DP operators 2343 2344 Collective 2345 2346 Input Parameters: 2347 + pc - the BDDC preconditioning context (setup should have been called before) 2348 - fully_redundant - true for a fully redundant set of Lagrange multipliers 2349 2350 Output Parameters: 2351 + fetidp_mat - shell FETI-DP matrix object 2352 - fetidp_pc - shell Dirichlet preconditioner for FETI-DP matrix 2353 2354 Level: developer 2355 2356 Notes: 2357 Currently the only operations provided for FETI-DP matrix are MatMult and MatMultTranspose 2358 2359 .seealso: PCBDDC, PCBDDCMatFETIDPGetRHS, PCBDDCMatFETIDPGetSolution 2360 @*/ 2361 PetscErrorCode PCBDDCCreateFETIDPOperators(PC pc, PetscBool fully_redundant, Mat *fetidp_mat, PC *fetidp_pc) 2362 { 2363 PetscErrorCode ierr; 2364 2365 PetscFunctionBegin; 2366 PetscValidHeaderSpecific(pc,PC_CLASSID,1); 2367 if (pc->setupcalled) { 2368 ierr = PetscUseMethod(pc,"PCBDDCCreateFETIDPOperators_C",(PC,PetscBool,Mat*,PC*),(pc,fully_redundant,fetidp_mat,fetidp_pc));CHKERRQ(ierr); 2369 } else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"You must call PCSetup_BDDC() first \n"); 2370 PetscFunctionReturn(0); 2371 } 2372 /* -------------------------------------------------------------------------- */ 2373 /*MC 2374 PCBDDC - Balancing Domain Decomposition by Constraints. 2375 2376 An implementation of the BDDC preconditioner based on 2377 2378 .vb 2379 [1] C. R. Dohrmann. "An approximate BDDC preconditioner", Numerical Linear Algebra with Applications Volume 14, Issue 2, pages 149-168, March 2007 2380 [2] A. Klawonn and O. B. Widlund. "Dual-Primal FETI Methods for Linear Elasticity", http://cs.nyu.edu/csweb/Research/TechReports/TR2004-855/TR2004-855.pdf 2381 [3] J. Mandel, B. Sousedik, C. R. Dohrmann. "Multispace and Multilevel BDDC", http://arxiv.org/abs/0712.3977 2382 [4] C. Pechstein and C. R. Dohrmann. "Modern domain decomposition methods BDDC, deluxe scaling, and an algebraic approach", Seminar talk, Linz, December 2013, http://people.ricam.oeaw.ac.at/c.pechstein/pechstein-bddc2013.pdf 2383 .ve 2384 2385 The matrix to be preconditioned (Pmat) must be of type MATIS. 2386 2387 Currently works with MATIS matrices with local matrices of type MATSEQAIJ, MATSEQBAIJ or MATSEQSBAIJ, either with real or complex numbers. 2388 2389 It also works with unsymmetric and indefinite problems. 2390 2391 Unlike 'conventional' interface preconditioners, PCBDDC iterates over all degrees of freedom, not just those on the interface. This allows the use of approximate solvers on the subdomains. 2392 2393 Approximate local solvers are automatically adapted (see [1]) if the user has attached a nullspace object to the subdomain matrices, and informed BDDC of using approximate solvers (via the command line). 2394 2395 Boundary nodes are split in vertices, edges and faces classes using information from the local to global mapping of dofs and the local connectivity graph of nodes. The latter can be customized by using PCBDDCSetLocalAdjacencyGraph() 2396 Additional information on dofs can be provided by using PCBDDCSetDofsSplitting(), PCBDDCSetDirichletBoundaries(), PCBDDCSetNeumannBoundaries(), and PCBDDCSetPrimalVerticesIS() and their local counterparts. 2397 2398 Constraints can be customized by attaching a MatNullSpace object to the MATIS matrix via MatSetNearNullSpace(). Non-singular modes are retained via SVD. 2399 2400 Change of basis is performed similarly to [2] when requested. When more than one constraint is present on a single connected component (i.e. an edge or a face), a robust method based on local QR factorizations is used. 2401 User defined change of basis can be passed to PCBDDC by using PCBDDCSetChangeOfBasisMat() 2402 2403 The PETSc implementation also supports multilevel BDDC [3]. Coarse grids are partitioned using a MatPartitioning object. 2404 2405 Adaptive selection of primal constraints [4] is supported for SPD systems with high-contrast in the coefficients if MUMPS or MKL_PARDISO are present. Future versions of the code will also consider using PASTIX. 2406 2407 An experimental interface to the FETI-DP method is available. FETI-DP operators could be created using PCBDDCCreateFETIDPOperators(). A stand-alone class for the FETI-DP method will be provided in the next releases. 2408 Deluxe scaling is not supported yet for FETI-DP. 2409 2410 Options Database Keys (some of them, run with -h for a complete list): 2411 2412 . -pc_bddc_use_vertices <true> - use or not vertices in primal space 2413 . -pc_bddc_use_edges <true> - use or not edges in primal space 2414 . -pc_bddc_use_faces <false> - use or not faces in primal space 2415 . -pc_bddc_symmetric <true> - symmetric computation of primal basis functions. Specify false for unsymmetric problems 2416 . -pc_bddc_use_change_of_basis <false> - use change of basis approach (on edges only) 2417 . -pc_bddc_use_change_on_faces <false> - use change of basis approach on faces if change of basis has been requested 2418 . -pc_bddc_switch_static <false> - switches from M_2 (default) to M_3 operator (see reference article [1]) 2419 . -pc_bddc_levels <0> - maximum number of levels for multilevel 2420 . -pc_bddc_coarsening_ratio <8> - number of subdomains which will be aggregated together at the coarser level (e.g. H/h ratio at the coarser level, significative only in the multilevel case) 2421 . -pc_bddc_redistribute <0> - size of a subset of processors where the coarse problem will be remapped (the value is ignored if not at the coarsest level) 2422 . -pc_bddc_use_deluxe_scaling <false> - use deluxe scaling 2423 . -pc_bddc_schur_layers <-1> - select the economic version of deluxe scaling by specifying the number of layers (-1 corresponds to the original deluxe scaling) 2424 . -pc_bddc_adaptive_threshold <0.0> - when a value greater than one is specified, adaptive selection of constraints is performed on edges and faces (requires deluxe scaling and MUMPS or MKL_PARDISO installed) 2425 - -pc_bddc_check_level <0> - set verbosity level of debugging output 2426 2427 Options for Dirichlet, Neumann or coarse solver can be set with 2428 .vb 2429 -pc_bddc_dirichlet_ 2430 -pc_bddc_neumann_ 2431 -pc_bddc_coarse_ 2432 .ve 2433 e.g -pc_bddc_dirichlet_ksp_type richardson -pc_bddc_dirichlet_pc_type gamg. PCBDDC uses by default KPSPREONLY and PCLU. 2434 2435 When using a multilevel approach, solvers' options at the N-th level (N > 1) can be specified as 2436 .vb 2437 -pc_bddc_dirichlet_lN_ 2438 -pc_bddc_neumann_lN_ 2439 -pc_bddc_coarse_lN_ 2440 .ve 2441 Note that level number ranges from the finest (0) to the coarsest (N). 2442 In order to specify options for the BDDC operators at the coarser levels (and not for the solvers), prepend -pc_bddc_coarse_ or -pc_bddc_coarse_l to the option, e.g. 2443 .vb 2444 -pc_bddc_coarse_pc_bddc_adaptive_threshold 5 -pc_bddc_coarse_l1_pc_bddc_redistribute 3 2445 .ve 2446 will use a threshold of 5 for constraints' selection at the first coarse level and will redistribute the coarse problem of the first coarse level on 3 processors 2447 2448 Level: intermediate 2449 2450 Developer notes: 2451 2452 Contributed by Stefano Zampini 2453 2454 .seealso: PCCreate(), PCSetType(), PCType (for list of available types), PC, MATIS 2455 M*/ 2456 2457 #undef __FUNCT__ 2458 #define __FUNCT__ "PCCreate_BDDC" 2459 PETSC_EXTERN PetscErrorCode PCCreate_BDDC(PC pc) 2460 { 2461 PetscErrorCode ierr; 2462 PC_BDDC *pcbddc; 2463 2464 PetscFunctionBegin; 2465 /* Creates the private data structure for this preconditioner and attach it to the PC object. */ 2466 ierr = PetscNewLog(pc,&pcbddc);CHKERRQ(ierr); 2467 pc->data = (void*)pcbddc; 2468 2469 /* create PCIS data structure */ 2470 ierr = PCISCreate(pc);CHKERRQ(ierr); 2471 2472 /* BDDC customization */ 2473 pcbddc->use_local_adj = PETSC_TRUE; 2474 pcbddc->use_vertices = PETSC_TRUE; 2475 pcbddc->use_edges = PETSC_TRUE; 2476 pcbddc->use_faces = PETSC_FALSE; 2477 pcbddc->use_change_of_basis = PETSC_FALSE; 2478 pcbddc->use_change_on_faces = PETSC_FALSE; 2479 pcbddc->switch_static = PETSC_FALSE; 2480 pcbddc->use_nnsp_true = PETSC_FALSE; 2481 pcbddc->use_qr_single = PETSC_FALSE; 2482 pcbddc->symmetric_primal = PETSC_TRUE; 2483 pcbddc->benign_saddle_point = PETSC_FALSE; 2484 pcbddc->benign_have_null = PETSC_FALSE; 2485 pcbddc->vertex_size = 1; 2486 pcbddc->dbg_flag = 0; 2487 /* private */ 2488 pcbddc->local_primal_size = 0; 2489 pcbddc->local_primal_size_cc = 0; 2490 pcbddc->local_primal_ref_node = 0; 2491 pcbddc->local_primal_ref_mult = 0; 2492 pcbddc->n_vertices = 0; 2493 pcbddc->primal_indices_local_idxs = 0; 2494 pcbddc->recompute_topography = PETSC_FALSE; 2495 pcbddc->coarse_size = -1; 2496 pcbddc->new_primal_space = PETSC_FALSE; 2497 pcbddc->new_primal_space_local = PETSC_FALSE; 2498 pcbddc->global_primal_indices = 0; 2499 pcbddc->onearnullspace = 0; 2500 pcbddc->onearnullvecs_state = 0; 2501 pcbddc->user_primal_vertices = 0; 2502 pcbddc->user_primal_vertices_local = 0; 2503 pcbddc->temp_solution = 0; 2504 pcbddc->original_rhs = 0; 2505 pcbddc->local_mat = 0; 2506 pcbddc->ChangeOfBasisMatrix = 0; 2507 pcbddc->user_ChangeOfBasisMatrix = 0; 2508 pcbddc->coarse_vec = 0; 2509 pcbddc->coarse_ksp = 0; 2510 pcbddc->coarse_phi_B = 0; 2511 pcbddc->coarse_phi_D = 0; 2512 pcbddc->coarse_psi_B = 0; 2513 pcbddc->coarse_psi_D = 0; 2514 pcbddc->vec1_P = 0; 2515 pcbddc->vec1_R = 0; 2516 pcbddc->vec2_R = 0; 2517 pcbddc->local_auxmat1 = 0; 2518 pcbddc->local_auxmat2 = 0; 2519 pcbddc->R_to_B = 0; 2520 pcbddc->R_to_D = 0; 2521 pcbddc->ksp_D = 0; 2522 pcbddc->ksp_R = 0; 2523 pcbddc->NeumannBoundaries = 0; 2524 pcbddc->NeumannBoundariesLocal = 0; 2525 pcbddc->DirichletBoundaries = 0; 2526 pcbddc->DirichletBoundariesLocal = 0; 2527 pcbddc->user_provided_isfordofs = PETSC_FALSE; 2528 pcbddc->n_ISForDofs = 0; 2529 pcbddc->n_ISForDofsLocal = 0; 2530 pcbddc->ISForDofs = 0; 2531 pcbddc->ISForDofsLocal = 0; 2532 pcbddc->ConstraintMatrix = 0; 2533 pcbddc->use_exact_dirichlet_trick = PETSC_TRUE; 2534 pcbddc->exact_dirichlet_trick_app = PETSC_FALSE; 2535 pcbddc->coarse_loc_to_glob = 0; 2536 pcbddc->coarsening_ratio = 8; 2537 pcbddc->coarse_adj_red = 0; 2538 pcbddc->current_level = 0; 2539 pcbddc->max_levels = 0; 2540 pcbddc->use_coarse_estimates = PETSC_FALSE; 2541 pcbddc->coarse_eqs_per_proc = 1; 2542 pcbddc->coarse_subassembling = 0; 2543 pcbddc->detect_disconnected = PETSC_FALSE; 2544 pcbddc->n_local_subs = 0; 2545 pcbddc->local_subs = NULL; 2546 2547 /* benign subspace trick */ 2548 pcbddc->benign_change = 0; 2549 pcbddc->benign_compute_correction = PETSC_TRUE; 2550 pcbddc->benign_vec = 0; 2551 pcbddc->benign_original_mat = 0; 2552 pcbddc->benign_sf = 0; 2553 pcbddc->benign_B0 = 0; 2554 pcbddc->benign_n = 0; 2555 pcbddc->benign_p0 = NULL; 2556 pcbddc->benign_p0_lidx = NULL; 2557 pcbddc->benign_p0_gidx = NULL; 2558 pcbddc->benign_null = PETSC_FALSE; 2559 2560 /* create local graph structure */ 2561 ierr = PCBDDCGraphCreate(&pcbddc->mat_graph);CHKERRQ(ierr); 2562 2563 /* scaling */ 2564 pcbddc->work_scaling = 0; 2565 pcbddc->use_deluxe_scaling = PETSC_FALSE; 2566 2567 /* sub schurs options */ 2568 pcbddc->sub_schurs_rebuild = PETSC_FALSE; 2569 pcbddc->sub_schurs_layers = -1; 2570 pcbddc->sub_schurs_use_useradj = PETSC_FALSE; 2571 2572 pcbddc->computed_rowadj = PETSC_FALSE; 2573 2574 /* adaptivity */ 2575 pcbddc->adaptive_threshold = 0.0; 2576 pcbddc->adaptive_nmax = 0; 2577 pcbddc->adaptive_nmin = 0; 2578 2579 /* function pointers */ 2580 pc->ops->apply = PCApply_BDDC; 2581 pc->ops->applytranspose = PCApplyTranspose_BDDC; 2582 pc->ops->setup = PCSetUp_BDDC; 2583 pc->ops->destroy = PCDestroy_BDDC; 2584 pc->ops->setfromoptions = PCSetFromOptions_BDDC; 2585 pc->ops->view = PCView_BDDC; 2586 pc->ops->applyrichardson = 0; 2587 pc->ops->applysymmetricleft = 0; 2588 pc->ops->applysymmetricright = 0; 2589 pc->ops->presolve = PCPreSolve_BDDC; 2590 pc->ops->postsolve = PCPostSolve_BDDC; 2591 2592 /* composing function */ 2593 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDivergenceMat_C",PCBDDCSetDivergenceMat_BDDC);CHKERRQ(ierr); 2594 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetChangeOfBasisMat_C",PCBDDCSetChangeOfBasisMat_BDDC);CHKERRQ(ierr); 2595 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetPrimalVerticesLocalIS_C",PCBDDCSetPrimalVerticesLocalIS_BDDC);CHKERRQ(ierr); 2596 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetPrimalVerticesIS_C",PCBDDCSetPrimalVerticesIS_BDDC);CHKERRQ(ierr); 2597 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetCoarseningRatio_C",PCBDDCSetCoarseningRatio_BDDC);CHKERRQ(ierr); 2598 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetLevel_C",PCBDDCSetLevel_BDDC);CHKERRQ(ierr); 2599 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetUseExactDirichlet_C",PCBDDCSetUseExactDirichlet_BDDC);CHKERRQ(ierr); 2600 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetLevels_C",PCBDDCSetLevels_BDDC);CHKERRQ(ierr); 2601 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDirichletBoundaries_C",PCBDDCSetDirichletBoundaries_BDDC);CHKERRQ(ierr); 2602 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDirichletBoundariesLocal_C",PCBDDCSetDirichletBoundariesLocal_BDDC);CHKERRQ(ierr); 2603 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetNeumannBoundaries_C",PCBDDCSetNeumannBoundaries_BDDC);CHKERRQ(ierr); 2604 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetNeumannBoundariesLocal_C",PCBDDCSetNeumannBoundariesLocal_BDDC);CHKERRQ(ierr); 2605 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCGetDirichletBoundaries_C",PCBDDCGetDirichletBoundaries_BDDC);CHKERRQ(ierr); 2606 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCGetDirichletBoundariesLocal_C",PCBDDCGetDirichletBoundariesLocal_BDDC);CHKERRQ(ierr); 2607 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCGetNeumannBoundaries_C",PCBDDCGetNeumannBoundaries_BDDC);CHKERRQ(ierr); 2608 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCGetNeumannBoundariesLocal_C",PCBDDCGetNeumannBoundariesLocal_BDDC);CHKERRQ(ierr); 2609 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDofsSplitting_C",PCBDDCSetDofsSplitting_BDDC);CHKERRQ(ierr); 2610 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetDofsSplittingLocal_C",PCBDDCSetDofsSplittingLocal_BDDC);CHKERRQ(ierr); 2611 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCSetLocalAdjacencyGraph_C",PCBDDCSetLocalAdjacencyGraph_BDDC);CHKERRQ(ierr); 2612 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCCreateFETIDPOperators_C",PCBDDCCreateFETIDPOperators_BDDC);CHKERRQ(ierr); 2613 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCMatFETIDPGetRHS_C",PCBDDCMatFETIDPGetRHS_BDDC);CHKERRQ(ierr); 2614 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCBDDCMatFETIDPGetSolution_C",PCBDDCMatFETIDPGetSolution_BDDC);CHKERRQ(ierr); 2615 ierr = PetscObjectComposeFunction((PetscObject)pc,"PCPreSolveChangeRHS_C",PCPreSolveChangeRHS_BDDC);CHKERRQ(ierr); 2616 PetscFunctionReturn(0); 2617 } 2618 2619