1 static char help[] = "Tests PetscSectionView()/Load() with HDF5.\n\n"; 2 3 #include <petscdmshell.h> 4 #include <petscdmplex.h> 5 #include <petscsection.h> 6 #include <petscsf.h> 7 #include <petsclayouthdf5.h> 8 9 /* Save/Load abstract sections 10 11 ===================== 12 Save on 2 processes 13 ===================== 14 15 section: 16 0 1 2 3 17 rank 0: Dof (Field 0) 2 3 5 7 18 Dof (Field 1) 1 0 0 0 19 20 0 1 2 21 rank 1: Dof (Field 0) 7 5 11 <- DoF 7 is constrained 22 Dof (Field 1) 0 0 2 23 24 sf: 25 [0] 3 <- (1, 0) 26 [1] 1 <- (0, 2) 27 28 global section (includesConstraints = PETSC_FALSE): 29 0 1 2 3 30 rank 0: Dof (Field 0) 2 3 5 -8 31 Off (Field 0) 0 3 6 -12 32 Dof (Field 1) 1 0 0 -1 33 Off (Field 1) 2 6 11 -19 34 35 0 1 2 36 rank 1: Dof (Field 0) 7 -6 11 37 Off (Field 0) 11 -7 18 38 Dof (Field 1) 0 -1 2 39 Off (Field 1) 18 -12 28 40 41 global section (includesConstraints = PETSC_TRUE): 42 0 1 2 3 43 rank 0: Dof (Field 0) 2 3 5 -8 44 Off (Field 0) 0 3 6 -12 45 Dof (Field 1) 1 0 0 -1 46 Off (Field 1) 2 6 11 -19 47 48 0 1 2 49 rank 1: Dof (Field 0) 7 -6 11 50 Off (Field 0) 11 -7 18 51 Dof (Field 1) 0 -1 2 52 Off (Field 1) 18 -12 29 53 54 ===================== 55 Load on 3 Processes 56 ===================== 57 58 (Set chartSize = 4, 0, 1 for rank 0, 1, 2, respectively) 59 60 global section (includesConstraints = PETSC_FALSE): 61 62 rank 0: Dof (Field 0) 2 3 5 7 63 Off (Field 0) 0 3 6 11 64 Dof (Field 1) 1 0 0 0 65 Off (Field 1) 2 6 11 18 66 67 rank 1: Dof (Field 0) 68 Dof (Field 1) 69 70 rank 2: Dof (Field 0) 11 71 Off (Field 0) 18 72 Dof (Field 1) 2 73 Off (Field 1) 28 74 75 global section (includesConstraints = PETSC_TRUE): 76 77 rank 0: Dof (Field 0) 2 3 5 7 78 Off (Field 0) 0 3 6 11 79 Dof (Field 1) 1 0 0 0 80 Off (Field 1) 2 6 11 18 81 82 rank 1: Dof (Field 0) 83 Dof (Field 1) 84 85 rank 2: Dof (Field 0) 11 86 Off (Field 0) 18 87 Dof (Field 1) 2 88 Off (Field 1) 29 89 */ 90 91 typedef struct { 92 char fname[PETSC_MAX_PATH_LEN]; /* Output mesh filename */ 93 PetscBool includes_constraints; /* Flag for if global section is to include constrained DoFs or not */ 94 } AppCtx; 95 96 PetscErrorCode ProcessOptions(MPI_Comm comm, AppCtx *options) 97 { 98 PetscFunctionBegin; 99 options->fname[0] = '\0'; 100 options->includes_constraints = PETSC_TRUE; 101 PetscOptionsBegin(comm, "", "PetscSectionView()/Load() in HDF5 Test Options", "DMPLEX"); 102 PetscCall(PetscOptionsString("-fname", "The output file", "ex5.c", options->fname, options->fname, sizeof(options->fname), NULL)); 103 PetscCall(PetscOptionsBool("-includes_constraints", "Flag for if global section is to include constrained DoFs or not", "ex5.c", options->includes_constraints, &options->includes_constraints, NULL)); 104 PetscOptionsEnd(); 105 PetscFunctionReturn(PETSC_SUCCESS); 106 } 107 108 int main(int argc, char **argv) 109 { 110 MPI_Comm comm; 111 PetscMPIInt size, rank, mycolor; 112 AppCtx user; 113 114 PetscFunctionBeginUser; 115 PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 116 PetscCall(ProcessOptions(PETSC_COMM_WORLD, &user)); 117 PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 118 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 119 PetscCheck(size >= 3, PETSC_COMM_WORLD, PETSC_ERR_WRONG_MPI_SIZE, "Example only works with three or more processes"); 120 121 /* Save */ 122 mycolor = (PetscMPIInt)(rank >= 2); 123 PetscCallMPI(MPI_Comm_split(PETSC_COMM_WORLD, mycolor, rank, &comm)); 124 if (mycolor == 0) { 125 PetscSection section, gsection; 126 PetscSF sf; 127 PetscInt nroots = -1, nleaves = -1, *ilocal; 128 PetscSFNode *iremote; 129 PetscViewer viewer; 130 131 /* Create section */ 132 PetscCall(PetscSectionCreate(comm, §ion)); 133 PetscCall(PetscSectionSetNumFields(section, 2)); 134 switch (rank) { 135 case 0: 136 PetscCall(PetscSectionSetChart(section, 0, 4)); 137 PetscCall(PetscSectionSetDof(section, 0, 3)); 138 PetscCall(PetscSectionSetDof(section, 1, 3)); 139 PetscCall(PetscSectionSetDof(section, 2, 5)); 140 PetscCall(PetscSectionSetDof(section, 3, 7)); 141 PetscCall(PetscSectionSetFieldDof(section, 0, 0, 2)); 142 PetscCall(PetscSectionSetFieldDof(section, 1, 0, 3)); 143 PetscCall(PetscSectionSetFieldDof(section, 2, 0, 5)); 144 PetscCall(PetscSectionSetFieldDof(section, 3, 0, 7)); 145 PetscCall(PetscSectionSetFieldDof(section, 0, 1, 1)); 146 break; 147 case 1: 148 PetscCall(PetscSectionSetChart(section, 0, 3)); 149 PetscCall(PetscSectionSetDof(section, 0, 7)); 150 PetscCall(PetscSectionSetDof(section, 1, 5)); 151 PetscCall(PetscSectionSetDof(section, 2, 13)); 152 PetscCall(PetscSectionSetConstraintDof(section, 2, 1)); 153 PetscCall(PetscSectionSetFieldDof(section, 0, 0, 7)); 154 PetscCall(PetscSectionSetFieldDof(section, 1, 0, 5)); 155 PetscCall(PetscSectionSetFieldDof(section, 2, 0, 11)); 156 PetscCall(PetscSectionSetFieldDof(section, 2, 1, 2)); 157 PetscCall(PetscSectionSetFieldConstraintDof(section, 2, 0, 1)); 158 break; 159 } 160 PetscCall(PetscSectionSetUp(section)); 161 if (rank == 1) { 162 const PetscInt indices[] = {7}; 163 const PetscInt indices0[] = {7}; 164 165 PetscCall(PetscSectionSetConstraintIndices(section, 2, indices)); 166 PetscCall(PetscSectionSetFieldConstraintIndices(section, 2, 0, indices0)); 167 } 168 /* Create sf */ 169 switch (rank) { 170 case 0: 171 nroots = 4; 172 nleaves = 1; 173 PetscCall(PetscMalloc1(nleaves, &ilocal)); 174 PetscCall(PetscMalloc1(nleaves, &iremote)); 175 ilocal[0] = 3; 176 iremote[0].rank = 1; 177 iremote[0].index = 0; 178 break; 179 case 1: 180 nroots = 3; 181 nleaves = 1; 182 PetscCall(PetscMalloc1(nleaves, &ilocal)); 183 PetscCall(PetscMalloc1(nleaves, &iremote)); 184 ilocal[0] = 1; 185 iremote[0].rank = 0; 186 iremote[0].index = 2; 187 break; 188 } 189 PetscCall(PetscSFCreate(comm, &sf)); 190 PetscCall(PetscSFSetGraph(sf, nroots, nleaves, ilocal, PETSC_OWN_POINTER, iremote, PETSC_OWN_POINTER)); 191 /* Create global section*/ 192 PetscCall(PetscSectionCreateGlobalSection(section, sf, PETSC_TRUE, user.includes_constraints, PETSC_FALSE, &gsection)); 193 PetscCall(PetscSFDestroy(&sf)); 194 /* View */ 195 PetscCall(PetscViewerHDF5Open(comm, user.fname, FILE_MODE_WRITE, &viewer)); 196 PetscCall(PetscSectionView(gsection, viewer)); 197 PetscCall(PetscViewerDestroy(&viewer)); 198 PetscCall(PetscObjectSetName((PetscObject)section, "Save: local section")); 199 PetscCall(PetscSectionView(section, PETSC_VIEWER_STDOUT_(comm))); 200 PetscCall(PetscObjectSetName((PetscObject)gsection, "Save: global section")); 201 PetscCall(PetscSectionView(gsection, PETSC_VIEWER_STDOUT_(comm))); 202 PetscCall(PetscSectionDestroy(&gsection)); 203 PetscCall(PetscSectionDestroy(§ion)); 204 } 205 PetscCallMPI(MPI_Comm_free(&comm)); 206 207 /* Load */ 208 mycolor = (PetscMPIInt)(rank >= 3); 209 PetscCallMPI(MPI_Comm_split(PETSC_COMM_WORLD, mycolor, rank, &comm)); 210 if (mycolor == 0) { 211 PetscSection section; 212 PetscInt chartSize = -1; 213 PetscViewer viewer; 214 215 PetscCall(PetscSectionCreate(comm, §ion)); 216 switch (rank) { 217 case 0: 218 chartSize = 4; 219 break; 220 case 1: 221 chartSize = 0; 222 break; 223 case 2: 224 chartSize = 1; 225 break; 226 } 227 PetscCall(PetscSectionSetChart(section, 0, chartSize)); 228 PetscCall(PetscViewerHDF5Open(comm, user.fname, FILE_MODE_READ, &viewer)); 229 PetscCall(PetscSectionLoad(section, viewer)); 230 PetscCall(PetscViewerDestroy(&viewer)); 231 PetscCall(PetscObjectSetName((PetscObject)section, "Load: section")); 232 PetscCall(PetscSectionView(section, PETSC_VIEWER_STDOUT_(comm))); 233 PetscCall(PetscSectionDestroy(§ion)); 234 } 235 PetscCallMPI(MPI_Comm_free(&comm)); 236 237 /* Finalize */ 238 PetscCall(PetscFinalize()); 239 return 0; 240 } 241 242 /*TEST 243 244 build: 245 requires: hdf5 246 requires: !complex 247 testset: 248 nsize: 4 249 test: 250 suffix: 0 251 args: -fname ex5_dump.h5 -includes_constraints 0 252 test: 253 suffix: 1 254 args: -fname ex5_dump.h5 -includes_constraints 1 255 256 TEST*/ 257