Actual source code: bddc.h
petsc-3.6.4 2016-04-12
4: #include <../src/ksp/pc/impls/is/pcis.h>
5: #include <../src/ksp/pc/impls/bddc/bddcstructs.h>
7: /* Private context (data structure) for the BDDC preconditioner. */
8: typedef struct {
9: /* First MUST come the folowing line, for the stuff that is common to FETI and Neumann-Neumann. */
10: PC_IS pcis;
11: /* Coarse stuffs needed by BDDC application in KSP */
12: Vec coarse_vec;
13: KSP coarse_ksp;
14: Mat coarse_phi_B;
15: Mat coarse_phi_D;
16: Mat coarse_psi_B;
17: Mat coarse_psi_D;
18: PetscInt local_primal_size;
19: PetscInt coarse_size;
20: PetscInt* global_primal_indices;
21: VecScatter coarse_loc_to_glob;
22: /* Local stuffs needed by BDDC application in KSP */
23: Vec vec1_P;
24: Vec vec1_C;
25: Mat local_auxmat1;
26: Mat local_auxmat2;
27: Vec vec1_R;
28: Vec vec2_R;
29: IS is_R_local;
30: VecScatter R_to_B;
31: VecScatter R_to_D;
32: KSP ksp_R;
33: KSP ksp_D;
34: /* Quantities defining constraining details (local) of the preconditioner */
35: /* These quantities define the preconditioner itself */
36: PetscInt n_vertices;
37: Mat ConstraintMatrix;
38: PetscBool new_primal_space;
39: PetscBool new_primal_space_local;
40: PetscInt *primal_indices_local_idxs;
41: PetscInt local_primal_size_cc;
42: PetscInt *local_primal_ref_node;
43: PetscInt *local_primal_ref_mult;
44: PetscBool use_change_of_basis;
45: PetscBool use_change_on_faces;
46: Mat ChangeOfBasisMatrix;
47: Mat user_ChangeOfBasisMatrix;
48: Mat new_global_mat;
49: Vec original_rhs;
50: Vec temp_solution;
51: Mat local_mat;
52: PetscBool use_exact_dirichlet_trick;
53: PetscBool ksp_guess_nonzero;
54: PetscBool rhs_change;
55: /* Some defaults on selecting vertices and constraints*/
56: PetscBool use_local_adj;
57: PetscBool use_vertices;
58: PetscBool use_faces;
59: PetscBool use_edges;
60: /* Some customization is possible */
61: PetscBool recompute_topography;
62: PCBDDCGraph mat_graph;
63: MatNullSpace onearnullspace;
64: PetscObjectState *onearnullvecs_state;
65: MatNullSpace NullSpace;
66: IS user_primal_vertices;
67: PetscBool use_nnsp_true;
68: PetscBool use_qr_single;
69: PetscBool user_provided_isfordofs;
70: PetscInt n_ISForDofs;
71: PetscInt n_ISForDofsLocal;
72: IS *ISForDofs;
73: IS *ISForDofsLocal;
74: IS NeumannBoundaries;
75: IS NeumannBoundariesLocal;
76: IS DirichletBoundaries;
77: IS DirichletBoundariesLocal;
78: PetscBool switch_static;
79: PetscInt coarsening_ratio;
80: PetscInt coarse_adj_red;
81: PetscInt current_level;
82: PetscInt max_levels;
83: PetscInt redistribute_coarse;
84: IS coarse_subassembling;
85: IS coarse_subassembling_init;
86: PetscBool use_coarse_estimates;
87: PetscBool symmetric_primal;
88: /* scaling */
89: Vec work_scaling;
90: PetscBool use_deluxe_scaling;
91: PCBDDCDeluxeScaling deluxe_ctx;
92: PetscBool faster_deluxe;
94: /* schur complements on interface's subsets */
95: PCBDDCSubSchurs sub_schurs;
96: PetscBool sub_schurs_rebuild;
97: PetscInt sub_schurs_layers;
98: PetscBool sub_schurs_use_useradj;
99: PetscBool computed_rowadj;
101: /* adaptive selection of constraints */
102: PetscBool adaptive_selection;
103: PetscReal adaptive_threshold;
104: PetscInt adaptive_nmin;
105: PetscInt adaptive_nmax;
106: PetscInt* adaptive_constraints_n;
107: PetscInt* adaptive_constraints_idxs;
108: PetscInt* adaptive_constraints_idxs_ptr;
109: PetscScalar* adaptive_constraints_data;
110: PetscInt* adaptive_constraints_data_ptr;
112: /* For verbose output of some bddc data structures */
113: PetscInt dbg_flag;
114: PetscViewer dbg_viewer;
115: } PC_BDDC;
118: #endif /* __pcbddc_h */