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();CHKERRQ(ierr); 44 PetscFunctionReturn(0); 45 } 46 47 static PetscErrorCode ScotchResetRandomSeed() 48 { 49 PetscFunctionBegin; 50 #if defined(PETSC_HAVE_PTSCOTCH) 51 SCOTCH_randomReset(); 52 #endif 53 PetscFunctionReturn(0); 54 } 55 56 static PetscErrorCode CreateMesh(MPI_Comm comm, AppCtx *user, DM *dm) 57 { 58 PetscErrorCode ierr; 59 60 PetscFunctionBegin; 61 ierr = DMCreate(comm, dm);CHKERRQ(ierr); 62 ierr = DMSetType(*dm, DMPLEX);CHKERRQ(ierr); 63 ierr = DMSetFromOptions(*dm);CHKERRQ(ierr); 64 ierr = DMViewFromOptions(*dm, NULL, "-dm_view");CHKERRQ(ierr); 65 PetscFunctionReturn(0); 66 } 67 68 int main(int argc, char **argv) 69 { 70 MPI_Comm comm; 71 DM dm1, dm2, dmdist1, dmdist2; 72 DMPlexInterpolatedFlag interp; 73 MatPartitioning mp; 74 PetscPartitioner part1, part2; 75 AppCtx user; 76 IS is1=NULL, is2=NULL; 77 IS is1g, is2g; 78 PetscSection s1=NULL, s2=NULL, tpws = NULL; 79 PetscInt i; 80 PetscBool flg; 81 PetscErrorCode ierr; 82 PetscMPIInt size; 83 84 ierr = PetscInitialize(&argc, &argv, NULL,help);if (ierr) return ierr; 85 comm = PETSC_COMM_WORLD; 86 ierr = MPI_Comm_size(comm,&size);CHKERRMPI(ierr); 87 ierr = ProcessOptions(comm, &user);CHKERRQ(ierr); 88 ierr = CreateMesh(comm, &user, &dm1);CHKERRQ(ierr); 89 ierr = CreateMesh(comm, &user, &dm2);CHKERRQ(ierr); 90 91 if (user.tpw) { 92 ierr = PetscSectionCreate(comm, &tpws);CHKERRQ(ierr); 93 ierr = PetscSectionSetChart(tpws, 0, size);CHKERRQ(ierr); 94 for (i=0;i<size;i++) { 95 PetscInt tdof = i%2 ? 2*i -1 : i+2; 96 ierr = PetscSectionSetDof(tpws, i, tdof);CHKERRQ(ierr); 97 } 98 if (size > 1) { /* test zero tpw entry */ 99 ierr = PetscSectionSetDof(tpws, 0, 0);CHKERRQ(ierr); 100 } 101 ierr = PetscSectionSetUp(tpws);CHKERRQ(ierr); 102 } 103 104 /* partition dm1 using PETSCPARTITIONERPARMETIS */ 105 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 106 ierr = DMPlexGetPartitioner(dm1, &part1);CHKERRQ(ierr); 107 ierr = PetscObjectSetOptionsPrefix((PetscObject)part1,"p1_");CHKERRQ(ierr); 108 ierr = PetscPartitionerSetType(part1, user.partitioning);CHKERRQ(ierr); 109 ierr = PetscPartitionerSetFromOptions(part1);CHKERRQ(ierr); 110 ierr = PetscSectionCreate(comm, &s1);CHKERRQ(ierr); 111 ierr = PetscPartitionerDMPlexPartition(part1, dm1, tpws, s1, &is1);CHKERRQ(ierr); 112 113 /* partition dm2 using PETSCPARTITIONERMATPARTITIONING with MATPARTITIONINGPARMETIS */ 114 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 115 ierr = DMPlexGetPartitioner(dm2, &part2);CHKERRQ(ierr); 116 ierr = PetscObjectSetOptionsPrefix((PetscObject)part2,"p2_");CHKERRQ(ierr); 117 ierr = PetscPartitionerSetType(part2, PETSCPARTITIONERMATPARTITIONING);CHKERRQ(ierr); 118 ierr = PetscPartitionerMatPartitioningGetMatPartitioning(part2, &mp);CHKERRQ(ierr); 119 ierr = MatPartitioningSetType(mp, user.partitioning);CHKERRQ(ierr); 120 ierr = PetscPartitionerSetFromOptions(part2);CHKERRQ(ierr); 121 ierr = PetscSectionCreate(comm, &s2);CHKERRQ(ierr); 122 ierr = PetscPartitionerDMPlexPartition(part2, dm2, tpws, s2, &is2);CHKERRQ(ierr); 123 124 ierr = ISOnComm(is1, comm, PETSC_USE_POINTER, &is1g);CHKERRQ(ierr); 125 ierr = ISOnComm(is2, comm, PETSC_USE_POINTER, &is2g);CHKERRQ(ierr); 126 ierr = ISViewFromOptions(is1g, NULL, "-seq_is1_view");CHKERRQ(ierr); 127 ierr = ISViewFromOptions(is2g, NULL, "-seq_is2_view");CHKERRQ(ierr); 128 /* compare the two ISs */ 129 if (user.compare_is) { 130 ierr = ISEqualUnsorted(is1g, is2g, &flg);CHKERRQ(ierr); 131 if (!flg) {ierr = PetscPrintf(comm, "ISs are not equal with type %s with size %d.\n",user.partitioning,size);CHKERRQ(ierr);} 132 } 133 ierr = ISDestroy(&is1g);CHKERRQ(ierr); 134 ierr = ISDestroy(&is2g);CHKERRQ(ierr); 135 136 /* compare the two PetscSections */ 137 ierr = PetscSectionViewFromOptions(s1, NULL, "-seq_s1_view");CHKERRQ(ierr); 138 ierr = PetscSectionViewFromOptions(s2, NULL, "-seq_s2_view");CHKERRQ(ierr); 139 if (user.compare_is) { 140 ierr = PetscSectionCompare(s1, s2, &flg);CHKERRQ(ierr); 141 if (!flg) {ierr = PetscPrintf(comm, "PetscSections are not equal with %s with size %d.\n",user.partitioning,size);CHKERRQ(ierr);} 142 } 143 144 /* distribute both DMs */ 145 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 146 ierr = DMPlexDistribute(dm1, 0, NULL, &dmdist1);CHKERRQ(ierr); 147 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 148 ierr = DMPlexDistribute(dm2, 0, NULL, &dmdist2);CHKERRQ(ierr); 149 150 /* cleanup */ 151 ierr = PetscSectionDestroy(&tpws);CHKERRQ(ierr); 152 ierr = PetscSectionDestroy(&s1);CHKERRQ(ierr); 153 ierr = PetscSectionDestroy(&s2);CHKERRQ(ierr); 154 ierr = ISDestroy(&is1);CHKERRQ(ierr); 155 ierr = ISDestroy(&is2);CHKERRQ(ierr); 156 ierr = DMDestroy(&dm1);CHKERRQ(ierr); 157 ierr = DMDestroy(&dm2);CHKERRQ(ierr); 158 159 /* if distributed DMs are NULL (sequential case), then quit */ 160 if (!dmdist1 && !dmdist2) return ierr; 161 162 ierr = DMViewFromOptions(dmdist1, NULL, "-dm_dist1_view");CHKERRQ(ierr); 163 ierr = DMViewFromOptions(dmdist2, NULL, "-dm_dist2_view");CHKERRQ(ierr); 164 165 /* compare the two distributed DMs */ 166 if (user.compare_dm) { 167 ierr = DMPlexEqual(dmdist1, dmdist2, &flg);CHKERRQ(ierr); 168 if (!flg) {ierr = PetscPrintf(comm, "Distributed DMs are not equal %s with size %d.\n",user.partitioning,size);CHKERRQ(ierr);} 169 } 170 171 /* if repartitioning is disabled, then quit */ 172 if (user.repartitioning[0] == '\0') return ierr; 173 174 if (user.tpw) { 175 ierr = PetscSectionCreate(comm, &tpws);CHKERRQ(ierr); 176 ierr = PetscSectionSetChart(tpws, 0, size);CHKERRQ(ierr); 177 for (i=0;i<size;i++) { 178 PetscInt tdof = i%2 ? i+1 : size - i; 179 ierr = PetscSectionSetDof(tpws, i, tdof);CHKERRQ(ierr); 180 } 181 ierr = PetscSectionSetUp(tpws);CHKERRQ(ierr); 182 } 183 184 /* repartition distributed DM dmdist1 */ 185 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 186 ierr = DMPlexGetPartitioner(dmdist1, &part1);CHKERRQ(ierr); 187 ierr = PetscObjectSetOptionsPrefix((PetscObject)part1,"dp1_");CHKERRQ(ierr); 188 ierr = PetscPartitionerSetType(part1, user.repartitioning);CHKERRQ(ierr); 189 ierr = PetscPartitionerSetFromOptions(part1);CHKERRQ(ierr); 190 ierr = PetscSectionCreate(comm, &s1);CHKERRQ(ierr); 191 ierr = PetscPartitionerDMPlexPartition(part1, dmdist1, tpws, s1, &is1);CHKERRQ(ierr); 192 193 /* repartition distributed DM dmdist2 */ 194 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 195 ierr = DMPlexGetPartitioner(dmdist2, &part2);CHKERRQ(ierr); 196 ierr = PetscObjectSetOptionsPrefix((PetscObject)part2,"dp2_");CHKERRQ(ierr); 197 ierr = PetscPartitionerSetType(part2, PETSCPARTITIONERMATPARTITIONING);CHKERRQ(ierr); 198 ierr = PetscPartitionerMatPartitioningGetMatPartitioning(part2, &mp);CHKERRQ(ierr); 199 ierr = MatPartitioningSetType(mp, user.repartitioning);CHKERRQ(ierr); 200 ierr = PetscPartitionerSetFromOptions(part2);CHKERRQ(ierr); 201 ierr = PetscSectionCreate(comm, &s2);CHKERRQ(ierr); 202 ierr = PetscPartitionerDMPlexPartition(part2, dmdist2, tpws, s2, &is2);CHKERRQ(ierr); 203 204 /* compare the two ISs */ 205 ierr = ISOnComm(is1, comm, PETSC_USE_POINTER, &is1g);CHKERRQ(ierr); 206 ierr = ISOnComm(is2, comm, PETSC_USE_POINTER, &is2g);CHKERRQ(ierr); 207 ierr = ISViewFromOptions(is1g, NULL, "-dist_is1_view");CHKERRQ(ierr); 208 ierr = ISViewFromOptions(is2g, NULL, "-dist_is2_view");CHKERRQ(ierr); 209 if (user.compare_is) { 210 ierr = ISEqualUnsorted(is1g, is2g, &flg);CHKERRQ(ierr); 211 if (!flg) {ierr = PetscPrintf(comm, "Distributed ISs are not equal, with %s with size %d.\n",user.repartitioning,size);CHKERRQ(ierr);} 212 } 213 ierr = ISDestroy(&is1g);CHKERRQ(ierr); 214 ierr = ISDestroy(&is2g);CHKERRQ(ierr); 215 216 /* compare the two PetscSections */ 217 ierr = PetscSectionViewFromOptions(s1, NULL, "-dist_s1_view");CHKERRQ(ierr); 218 ierr = PetscSectionViewFromOptions(s2, NULL, "-dist_s2_view");CHKERRQ(ierr); 219 if (user.compare_is) { 220 ierr = PetscSectionCompare(s1, s2, &flg);CHKERRQ(ierr); 221 if (!flg) {ierr = PetscPrintf(comm, "Distributed PetscSections are not equal, with %s with size %d.\n",user.repartitioning,size);CHKERRQ(ierr);} 222 } 223 224 /* redistribute both distributed DMs */ 225 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 226 ierr = DMPlexDistribute(dmdist1, 0, NULL, &dm1);CHKERRQ(ierr); 227 ierr = ScotchResetRandomSeed();CHKERRQ(ierr); 228 ierr = DMPlexDistribute(dmdist2, 0, NULL, &dm2);CHKERRQ(ierr); 229 230 /* compare the two distributed DMs */ 231 ierr = DMPlexIsInterpolated(dm1, &interp);CHKERRQ(ierr); 232 if (interp == DMPLEX_INTERPOLATED_NONE) { 233 ierr = DMPlexEqual(dm1, dm2, &flg);CHKERRQ(ierr); 234 if (!flg) {ierr = PetscPrintf(comm, "Redistributed DMs are not equal, with %s with size %d.\n",user.repartitioning,size);CHKERRQ(ierr);} 235 } 236 237 /* cleanup */ 238 ierr = PetscSectionDestroy(&tpws);CHKERRQ(ierr); 239 ierr = PetscSectionDestroy(&s1);CHKERRQ(ierr); 240 ierr = PetscSectionDestroy(&s2);CHKERRQ(ierr); 241 ierr = ISDestroy(&is1);CHKERRQ(ierr); 242 ierr = ISDestroy(&is2);CHKERRQ(ierr); 243 ierr = DMDestroy(&dm1);CHKERRQ(ierr); 244 ierr = DMDestroy(&dm2);CHKERRQ(ierr); 245 ierr = DMDestroy(&dmdist1);CHKERRQ(ierr); 246 ierr = DMDestroy(&dmdist2);CHKERRQ(ierr); 247 ierr = PetscFinalize(); 248 return ierr; 249 } 250 251 /*TEST 252 253 test: 254 # partition sequential mesh loaded from Exodus file 255 suffix: 0 256 nsize: {{1 2 3 4 8}} 257 requires: chaco parmetis ptscotch exodusii 258 args: -dm_plex_filename ${PETSC_DIR}/share/petsc/datafiles/meshes/blockcylinder-50.exo 259 args: -partitioning {{chaco parmetis ptscotch}} -repartitioning {{parmetis ptscotch}} -tpweight {{0 1}} 260 test: 261 # repartition mesh already partitioned naively by MED loader 262 suffix: 1 263 nsize: {{1 2 3 4 8}} 264 TODO: MED 265 requires: parmetis ptscotch med 266 args: -dm_plex_filename ${PETSC_DIR}/share/petsc/datafiles/meshes/cylinder.med 267 args: -repartition 0 -partitioning {{parmetis ptscotch}} 268 test: 269 # partition mesh generated by ctetgen using scotch, then repartition with scotch, diff view 270 suffix: 3 271 nsize: 4 272 requires: ptscotch ctetgen 273 args: -dm_plex_dim 3 -dm_plex_box_faces 2,3,2 -partitioning ptscotch -repartitioning ptscotch 274 args: -p1_petscpartitioner_view -p2_petscpartitioner_view -dp1_petscpartitioner_view -dp2_petscpartitioner_view -tpweight {{0 1}} 275 test: 276 # partition mesh generated by ctetgen using partitioners supported both by MatPartitioning and PetscPartitioner 277 suffix: 4 278 nsize: {{1 2 3 4 8}} 279 requires: chaco parmetis ptscotch ctetgen 280 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}} 281 282 TEST*/ 283