1 static char help[] = "Test that MatPartitioning and PetscPartitioner interfaces are equivalent when using PETSCPARTITIONERMATPARTITIONING\n\n"; 2 static char FILENAME[] = "ex24.c"; 3 4 #include <petscdmplex.h> 5 #include <petscviewerhdf5.h> 6 7 #if defined(PETSC_HAVE_PTSCOTCH) 8 EXTERN_C_BEGIN 9 #include <ptscotch.h> 10 EXTERN_C_END 11 #endif 12 13 typedef struct { 14 PetscBool compare_is; /* Compare ISs and PetscSections */ 15 PetscBool compare_dm; /* Compare DM */ 16 PetscBool tpw; /* Use target partition weights */ 17 char partitioning[64]; 18 char repartitioning[64]; 19 } AppCtx; 20 21 static PetscErrorCode ProcessOptions(MPI_Comm comm, AppCtx *options) 22 { 23 PetscBool repartition = PETSC_TRUE; 24 PetscErrorCode ierr; 25 26 PetscFunctionBegin; 27 options->compare_is = PETSC_FALSE; 28 options->compare_dm = PETSC_FALSE; 29 30 ierr = PetscOptionsBegin(comm, "", "Meshing Interpolation Test Options", "DMPLEX");CHKERRQ(ierr); 31 ierr = PetscOptionsBool("-compare_is", "Compare ISs and PetscSections?", FILENAME, options->compare_is, &options->compare_is, NULL);CHKERRQ(ierr); 32 ierr = PetscOptionsBool("-compare_dm", "Compare DMs?", FILENAME, options->compare_dm, &options->compare_dm, NULL);CHKERRQ(ierr); 33 ierr = PetscStrncpy(options->partitioning,MATPARTITIONINGPARMETIS,sizeof(options->partitioning));CHKERRQ(ierr); 34 ierr = PetscOptionsString("-partitioning","The mat partitioning type to test","None",options->partitioning, options->partitioning,sizeof(options->partitioning),NULL);CHKERRQ(ierr); 35 ierr = PetscOptionsBool("-repartition", "Partition again after the first partition?", FILENAME, repartition, &repartition, NULL);CHKERRQ(ierr); 36 if (repartition) { 37 ierr = PetscStrncpy(options->repartitioning,MATPARTITIONINGPARMETIS,64);CHKERRQ(ierr); 38 ierr = PetscOptionsString("-repartitioning","The mat partitioning type to test (second partitioning)","None", options->repartitioning, options->repartitioning,sizeof(options->repartitioning),NULL);CHKERRQ(ierr); 39 } else { 40 options->repartitioning[0] = '\0'; 41 } 42 ierr = PetscOptionsBool("-tpweight", "Use target partition weights", FILENAME, options->tpw, &options->tpw, NULL);CHKERRQ(ierr); 43 ierr = PetscOptionsEnd(); 44 PetscFunctionReturn(0); 45 } 46 47 static PetscErrorCode ScotchResetRandomSeed() 48 { 49 #if defined(PETSC_HAVE_PTSCOTCH) 50 SCOTCH_randomReset(); 51 #endif 52 PetscFunctionReturn(0); 53 } 54 55 static PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm) 56 { 57 PetscErrorCode ierr; 58 59 PetscFunctionBegin; 60 ierr = DMCreate(comm, dm);CHKERRQ(ierr); 61 ierr = DMSetType(*dm, DMPLEX);CHKERRQ(ierr); 62 ierr = DMSetFromOptions(*dm);CHKERRQ(ierr); 63 ierr = DMViewFromOptions(*dm, NULL, "-dm_view");CHKERRQ(ierr); 64 PetscFunctionReturn(0); 65 } 66 67 int main(int argc, char **argv) 68 { 69 MPI_Comm comm; 70 DM dm1, dm2, dmdist1, dmdist2; 71 DMPlexInterpolatedFlag interp; 72 MatPartitioning mp; 73 PetscPartitioner part1, part2; 74 AppCtx user; 75 IS is1=NULL, is2=NULL; 76 IS is1g, is2g; 77 PetscSection s1=NULL, s2=NULL, tpws = NULL; 78 PetscInt i; 79 PetscBool flg; 80 PetscErrorCode ierr; 81 PetscMPIInt size; 82 83 ierr = PetscInitialize(&argc, &argv, NULL,help);if (ierr) return ierr; 84 comm = PETSC_COMM_WORLD; 85 ierr = MPI_Comm_size(comm,&size);CHKERRMPI(ierr); 86 ierr = ProcessOptions(comm, &user);CHKERRQ(ierr); 87 ierr = CreateMesh(comm, &user, &dm1);CHKERRQ(ierr); 88 ierr = CreateMesh(comm, &user, &dm2);CHKERRQ(ierr); 89 90 if (user.tpw) { 91 ierr = PetscSectionCreate(comm, &tpws);CHKERRQ(ierr); 92 ierr = PetscSectionSetChart(tpws, 0, size);CHKERRQ(ierr); 93 for (i=0;i<size;i++) { 94 PetscInt tdof = i%2 ? 2*i -1 : i+2; 95 ierr = PetscSectionSetDof(tpws, i, tdof);CHKERRQ(ierr); 96 } 97 if (size > 1) { /* test zero tpw entry */ 98 ierr = PetscSectionSetDof(tpws, 0, 0);CHKERRQ(ierr); 99 } 100 ierr = PetscSectionSetUp(tpws);CHKERRQ(ierr); 101 } 102 103 /* partition dm1 using PETSCPARTITIONERPARMETIS */ 104 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 105 ierr = DMPlexGetPartitioner(dm1, &part1);CHKERRQ(ierr); 106 ierr = PetscObjectSetOptionsPrefix((PetscObject)part1,"p1_");CHKERRQ(ierr); 107 ierr = PetscPartitionerSetType(part1, user.partitioning);CHKERRQ(ierr); 108 ierr = PetscPartitionerSetFromOptions(part1);CHKERRQ(ierr); 109 ierr = PetscSectionCreate(comm, &s1);CHKERRQ(ierr); 110 ierr = PetscPartitionerDMPlexPartition(part1, dm1, tpws, s1, &is1);CHKERRQ(ierr); 111 112 /* partition dm2 using PETSCPARTITIONERMATPARTITIONING with MATPARTITIONINGPARMETIS */ 113 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 114 ierr = DMPlexGetPartitioner(dm2, &part2);CHKERRQ(ierr); 115 ierr = PetscObjectSetOptionsPrefix((PetscObject)part2,"p2_");CHKERRQ(ierr); 116 ierr = PetscPartitionerSetType(part2, PETSCPARTITIONERMATPARTITIONING);CHKERRQ(ierr); 117 ierr = PetscPartitionerMatPartitioningGetMatPartitioning(part2, &mp);CHKERRQ(ierr); 118 ierr = MatPartitioningSetType(mp, user.partitioning);CHKERRQ(ierr); 119 ierr = PetscPartitionerSetFromOptions(part2);CHKERRQ(ierr); 120 ierr = PetscSectionCreate(comm, &s2);CHKERRQ(ierr); 121 ierr = PetscPartitionerDMPlexPartition(part2, dm2, tpws, s2, &is2);CHKERRQ(ierr); 122 123 ierr = ISOnComm(is1, comm, PETSC_USE_POINTER, &is1g);CHKERRQ(ierr); 124 ierr = ISOnComm(is2, comm, PETSC_USE_POINTER, &is2g);CHKERRQ(ierr); 125 ierr = ISViewFromOptions(is1g, NULL, "-seq_is1_view");CHKERRQ(ierr); 126 ierr = ISViewFromOptions(is2g, NULL, "-seq_is2_view");CHKERRQ(ierr); 127 /* compare the two ISs */ 128 if (user.compare_is) { 129 ierr = ISEqualUnsorted(is1g, is2g, &flg);CHKERRQ(ierr); 130 if (!flg) {ierr = PetscPrintf(comm, "ISs are not equal with type %s with size %d.\n",user.partitioning,size);CHKERRQ(ierr);} 131 } 132 ierr = ISDestroy(&is1g);CHKERRQ(ierr); 133 ierr = ISDestroy(&is2g);CHKERRQ(ierr); 134 135 /* compare the two PetscSections */ 136 ierr = PetscSectionViewFromOptions(s1, NULL, "-seq_s1_view");CHKERRQ(ierr); 137 ierr = PetscSectionViewFromOptions(s2, NULL, "-seq_s2_view");CHKERRQ(ierr); 138 if (user.compare_is) { 139 ierr = PetscSectionCompare(s1, s2, &flg);CHKERRQ(ierr); 140 if (!flg) {ierr = PetscPrintf(comm, "PetscSections are not equal with %s with size %d.\n",user.partitioning,size);CHKERRQ(ierr);} 141 } 142 143 /* distribute both DMs */ 144 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 145 ierr = DMPlexDistribute(dm1, 0, NULL, &dmdist1);CHKERRQ(ierr); 146 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 147 ierr = DMPlexDistribute(dm2, 0, NULL, &dmdist2);CHKERRQ(ierr); 148 149 /* cleanup */ 150 ierr = PetscSectionDestroy(&tpws);CHKERRQ(ierr); 151 ierr = PetscSectionDestroy(&s1);CHKERRQ(ierr); 152 ierr = PetscSectionDestroy(&s2);CHKERRQ(ierr); 153 ierr = ISDestroy(&is1);CHKERRQ(ierr); 154 ierr = ISDestroy(&is2);CHKERRQ(ierr); 155 ierr = DMDestroy(&dm1);CHKERRQ(ierr); 156 ierr = DMDestroy(&dm2);CHKERRQ(ierr); 157 158 /* if distributed DMs are NULL (sequential case), then quit */ 159 if (!dmdist1 && !dmdist2) return ierr; 160 161 ierr = DMViewFromOptions(dmdist1, NULL, "-dm_dist1_view");CHKERRQ(ierr); 162 ierr = DMViewFromOptions(dmdist2, NULL, "-dm_dist2_view");CHKERRQ(ierr); 163 164 /* compare the two distributed DMs */ 165 if (user.compare_dm) { 166 ierr = DMPlexEqual(dmdist1, dmdist2, &flg);CHKERRQ(ierr); 167 if (!flg) {ierr = PetscPrintf(comm, "Distributed DMs are not equal %s with size %d.\n",user.partitioning,size);CHKERRQ(ierr);} 168 } 169 170 /* if repartitioning is disabled, then quit */ 171 if (user.repartitioning[0] == '\0') return ierr; 172 173 if (user.tpw) { 174 ierr = PetscSectionCreate(comm, &tpws);CHKERRQ(ierr); 175 ierr = PetscSectionSetChart(tpws, 0, size);CHKERRQ(ierr); 176 for (i=0;i<size;i++) { 177 PetscInt tdof = i%2 ? i+1 : size - i; 178 ierr = PetscSectionSetDof(tpws, i, tdof);CHKERRQ(ierr); 179 } 180 ierr = PetscSectionSetUp(tpws);CHKERRQ(ierr); 181 } 182 183 /* repartition distributed DM dmdist1 */ 184 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 185 ierr = DMPlexGetPartitioner(dmdist1, &part1);CHKERRQ(ierr); 186 ierr = PetscObjectSetOptionsPrefix((PetscObject)part1,"dp1_");CHKERRQ(ierr); 187 ierr = PetscPartitionerSetType(part1, user.repartitioning);CHKERRQ(ierr); 188 ierr = PetscPartitionerSetFromOptions(part1);CHKERRQ(ierr); 189 ierr = PetscSectionCreate(comm, &s1);CHKERRQ(ierr); 190 ierr = PetscPartitionerDMPlexPartition(part1, dmdist1, tpws, s1, &is1);CHKERRQ(ierr); 191 192 /* repartition distributed DM dmdist2 */ 193 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 194 ierr = DMPlexGetPartitioner(dmdist2, &part2);CHKERRQ(ierr); 195 ierr = PetscObjectSetOptionsPrefix((PetscObject)part2,"dp2_");CHKERRQ(ierr); 196 ierr = PetscPartitionerSetType(part2, PETSCPARTITIONERMATPARTITIONING);CHKERRQ(ierr); 197 ierr = PetscPartitionerMatPartitioningGetMatPartitioning(part2, &mp);CHKERRQ(ierr); 198 ierr = MatPartitioningSetType(mp, user.repartitioning);CHKERRQ(ierr); 199 ierr = PetscPartitionerSetFromOptions(part2);CHKERRQ(ierr); 200 ierr = PetscSectionCreate(comm, &s2);CHKERRQ(ierr); 201 ierr = PetscPartitionerDMPlexPartition(part2, dmdist2, tpws, s2, &is2);CHKERRQ(ierr); 202 203 /* compare the two ISs */ 204 ierr = ISOnComm(is1, comm, PETSC_USE_POINTER, &is1g);CHKERRQ(ierr); 205 ierr = ISOnComm(is2, comm, PETSC_USE_POINTER, &is2g);CHKERRQ(ierr); 206 ierr = ISViewFromOptions(is1g, NULL, "-dist_is1_view");CHKERRQ(ierr); 207 ierr = ISViewFromOptions(is2g, NULL, "-dist_is2_view");CHKERRQ(ierr); 208 if (user.compare_is) { 209 ierr = ISEqualUnsorted(is1g, is2g, &flg);CHKERRQ(ierr); 210 if (!flg) {ierr = PetscPrintf(comm, "Distributed ISs are not equal, with %s with size %d.\n",user.repartitioning,size);CHKERRQ(ierr);} 211 } 212 ierr = ISDestroy(&is1g);CHKERRQ(ierr); 213 ierr = ISDestroy(&is2g);CHKERRQ(ierr); 214 215 /* compare the two PetscSections */ 216 ierr = PetscSectionViewFromOptions(s1, NULL, "-dist_s1_view");CHKERRQ(ierr); 217 ierr = PetscSectionViewFromOptions(s2, NULL, "-dist_s2_view");CHKERRQ(ierr); 218 if (user.compare_is) { 219 ierr = PetscSectionCompare(s1, s2, &flg);CHKERRQ(ierr); 220 if (!flg) {ierr = PetscPrintf(comm, "Distributed PetscSections are not equal, with %s with size %d.\n",user.repartitioning,size);CHKERRQ(ierr);} 221 } 222 223 /* redistribute both distributed DMs */ 224 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 225 ierr = DMPlexDistribute(dmdist1, 0, NULL, &dm1);CHKERRQ(ierr); 226 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 227 ierr = DMPlexDistribute(dmdist2, 0, NULL, &dm2);CHKERRQ(ierr); 228 229 /* compare the two distributed DMs */ 230 ierr = DMPlexIsInterpolated(dm1, &interp);CHKERRQ(ierr); 231 if (interp == DMPLEX_INTERPOLATED_NONE) { 232 ierr = DMPlexEqual(dm1, dm2, &flg);CHKERRQ(ierr); 233 if (!flg) {ierr = PetscPrintf(comm, "Redistributed DMs are not equal, with %s with size %d.\n",user.repartitioning,size);CHKERRQ(ierr);} 234 } 235 236 /* cleanup */ 237 ierr = PetscSectionDestroy(&tpws);CHKERRQ(ierr); 238 ierr = PetscSectionDestroy(&s1);CHKERRQ(ierr); 239 ierr = PetscSectionDestroy(&s2);CHKERRQ(ierr); 240 ierr = ISDestroy(&is1);CHKERRQ(ierr); 241 ierr = ISDestroy(&is2);CHKERRQ(ierr); 242 ierr = DMDestroy(&dm1);CHKERRQ(ierr); 243 ierr = DMDestroy(&dm2);CHKERRQ(ierr); 244 ierr = DMDestroy(&dmdist1);CHKERRQ(ierr); 245 ierr = DMDestroy(&dmdist2);CHKERRQ(ierr); 246 ierr = PetscFinalize(); 247 return ierr; 248 } 249 250 /*TEST 251 252 test: 253 # partition sequential mesh loaded from Exodus file 254 suffix: 0 255 nsize: {{1 2 3 4 8}} 256 requires: chaco parmetis ptscotch exodusii 257 args: -dm_plex_filename ${PETSC_DIR}/share/petsc/datafiles/meshes/blockcylinder-50.exo 258 args: -partitioning {{chaco parmetis ptscotch}} -repartitioning {{parmetis ptscotch}} -tpweight {{0 1}} 259 test: 260 # repartition mesh already partitioned naively by MED loader 261 suffix: 1 262 nsize: {{1 2 3 4 8}} 263 TODO: MED 264 requires: parmetis ptscotch med 265 args: -dm_plex_filename ${PETSC_DIR}/share/petsc/datafiles/meshes/cylinder.med 266 args: -repartition 0 -partitioning {{parmetis ptscotch}} 267 test: 268 # partition mesh generated by ctetgen using scotch, then repartition with scotch, diff view 269 suffix: 3 270 nsize: 4 271 requires: ptscotch ctetgen 272 args: -dm_plex_dim 3 -dm_plex_box_faces 2,3,2 -partitioning ptscotch -repartitioning ptscotch 273 args: -p1_petscpartitioner_view -p2_petscpartitioner_view -dp1_petscpartitioner_view -dp2_petscpartitioner_view -tpweight {{0 1}} 274 test: 275 # partition mesh generated by ctetgen using partitioners supported both by MatPartitioning and PetscPartitioner 276 suffix: 4 277 nsize: {{1 2 3 4 8}} 278 requires: chaco parmetis ptscotch ctetgen 279 args: -dm_plex_dim 3 -dm_plex_box_faces {{2,3,4 5,4,3 7,11,5}} -partitioning {{chaco parmetis ptscotch}} -repartitioning {{parmetis ptscotch}} -tpweight {{0 1}} 280 281 TEST*/ 282