1 #include <petsc-private/dmpleximpl.h> /*I "petscdmplex.h" I*/ 2 #include <petscsf.h> 3 4 #undef __FUNCT__ 5 #define __FUNCT__ "DMPlexReverseCell" 6 /*@ 7 DMPlexReverseCell - Give a mesh cell the opposite orientation 8 9 Input Parameters: 10 + dm - The DM 11 - cell - The cell number 12 13 Note: The modification of the DM is done in-place. 14 15 Level: advanced 16 17 .seealso: DMPlexOrient(), DMCreate(), DMPLEX 18 @*/ 19 PetscErrorCode DMPlexReverseCell(DM dm, PetscInt cell) 20 { 21 /* Note that the reverse orientation ro of a face with orientation o is: 22 23 ro = o >= 0 ? -(faceSize - o) : faceSize + o 24 25 where faceSize is the size of the cone for the face. 26 */ 27 const PetscInt *cone, *coneO, *support; 28 PetscInt *revcone, *revconeO; 29 PetscInt maxConeSize, coneSize, supportSize, faceSize, cp, sp; 30 PetscErrorCode ierr; 31 32 PetscFunctionBegin; 33 ierr = DMPlexGetMaxSizes(dm, &maxConeSize, NULL);CHKERRQ(ierr); 34 ierr = DMGetWorkArray(dm, maxConeSize, PETSC_INT, &revcone);CHKERRQ(ierr); 35 ierr = DMGetWorkArray(dm, maxConeSize, PETSC_INT, &revconeO);CHKERRQ(ierr); 36 /* Reverse cone, and reverse orientations of faces */ 37 ierr = DMPlexGetConeSize(dm, cell, &coneSize);CHKERRQ(ierr); 38 ierr = DMPlexGetCone(dm, cell, &cone);CHKERRQ(ierr); 39 ierr = DMPlexGetConeOrientation(dm, cell, &coneO);CHKERRQ(ierr); 40 for (cp = 0; cp < coneSize; ++cp) { 41 const PetscInt rcp = coneSize-cp-1; 42 43 ierr = DMPlexGetConeSize(dm, cone[rcp], &faceSize);CHKERRQ(ierr); 44 revcone[cp] = cone[rcp]; 45 revconeO[cp] = coneO[rcp] >= 0 ? -(faceSize-coneO[rcp]) : faceSize+coneO[rcp]; 46 } 47 ierr = DMPlexSetCone(dm, cell, revcone);CHKERRQ(ierr); 48 ierr = DMPlexSetConeOrientation(dm, cell, revconeO);CHKERRQ(ierr); 49 /* Reverse orientation of this cell in the support hypercells */ 50 faceSize = coneSize; 51 ierr = DMPlexGetSupportSize(dm, cell, &supportSize);CHKERRQ(ierr); 52 ierr = DMPlexGetSupport(dm, cell, &support);CHKERRQ(ierr); 53 for (sp = 0; sp < supportSize; ++sp) { 54 ierr = DMPlexGetConeSize(dm, support[sp], &coneSize);CHKERRQ(ierr); 55 ierr = DMPlexGetCone(dm, support[sp], &cone);CHKERRQ(ierr); 56 ierr = DMPlexGetConeOrientation(dm, support[sp], &coneO);CHKERRQ(ierr); 57 for (cp = 0; cp < coneSize; ++cp) { 58 if (cone[cp] != cell) continue; 59 ierr = DMPlexInsertConeOrientation(dm, support[sp], cp, coneO[cp] >= 0 ? -(faceSize-coneO[cp]) : faceSize+coneO[cp]);CHKERRQ(ierr); 60 } 61 } 62 ierr = DMRestoreWorkArray(dm, maxConeSize, PETSC_INT, &revcone);CHKERRQ(ierr); 63 ierr = DMRestoreWorkArray(dm, maxConeSize, PETSC_INT, &revconeO);CHKERRQ(ierr); 64 PetscFunctionReturn(0); 65 } 66 67 #undef __FUNCT__ 68 #define __FUNCT__ "DMPlexCheckFace_Internal" 69 /* 70 - Checks face match 71 - Flips non-matching 72 - Inserts faces of support cells in FIFO 73 */ 74 static PetscErrorCode DMPlexCheckFace_Internal(DM dm, PetscInt face, PetscInt *faceFIFO, PetscInt *fTop, PetscInt *fBottom, PetscInt cStart, PetscInt fStart, PetscInt fEnd, PetscBT seenCells, PetscBT flippedCells, PetscBT seenFaces) 75 { 76 const PetscInt *support, *coneA, *coneB, *coneOA, *coneOB; 77 PetscInt supportSize, coneSizeA, coneSizeB, posA = -1, posB = -1; 78 PetscInt dim, seenA, flippedA, seenB, flippedB, mismatch, c; 79 PetscErrorCode ierr; 80 81 PetscFunctionBegin; 82 face = faceFIFO[(*fTop)++]; 83 ierr = DMGetDimension(dm, &dim);CHKERRQ(ierr); 84 ierr = DMPlexGetSupportSize(dm, face, &supportSize);CHKERRQ(ierr); 85 ierr = DMPlexGetSupport(dm, face, &support);CHKERRQ(ierr); 86 if (supportSize < 2) PetscFunctionReturn(0); 87 if (supportSize != 2) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Faces should separate only two cells, not %d", supportSize); 88 seenA = PetscBTLookup(seenCells, support[0]-cStart); 89 flippedA = PetscBTLookup(flippedCells, support[0]-cStart) ? 1 : 0; 90 seenB = PetscBTLookup(seenCells, support[1]-cStart); 91 flippedB = PetscBTLookup(flippedCells, support[1]-cStart) ? 1 : 0; 92 93 ierr = DMPlexGetConeSize(dm, support[0], &coneSizeA);CHKERRQ(ierr); 94 ierr = DMPlexGetConeSize(dm, support[1], &coneSizeB);CHKERRQ(ierr); 95 ierr = DMPlexGetCone(dm, support[0], &coneA);CHKERRQ(ierr); 96 ierr = DMPlexGetCone(dm, support[1], &coneB);CHKERRQ(ierr); 97 ierr = DMPlexGetConeOrientation(dm, support[0], &coneOA);CHKERRQ(ierr); 98 ierr = DMPlexGetConeOrientation(dm, support[1], &coneOB);CHKERRQ(ierr); 99 for (c = 0; c < coneSizeA; ++c) { 100 if (!PetscBTLookup(seenFaces, coneA[c]-fStart)) { 101 faceFIFO[(*fBottom)++] = coneA[c]; 102 ierr = PetscBTSet(seenFaces, coneA[c]-fStart);CHKERRQ(ierr); 103 } 104 if (coneA[c] == face) posA = c; 105 if (*fBottom > fEnd-fStart) SETERRQ3(PETSC_COMM_SELF, PETSC_ERR_PLIB, "Face %d was pushed exceeding capacity %d > %d", coneA[c], *fBottom, fEnd-fStart); 106 } 107 if (posA < 0) SETERRQ2(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Face %d could not be located in cell %d", face, support[0]); 108 for (c = 0; c < coneSizeB; ++c) { 109 if (!PetscBTLookup(seenFaces, coneB[c]-fStart)) { 110 faceFIFO[(*fBottom)++] = coneB[c]; 111 ierr = PetscBTSet(seenFaces, coneB[c]-fStart);CHKERRQ(ierr); 112 } 113 if (coneB[c] == face) posB = c; 114 if (*fBottom > fEnd-fStart) SETERRQ3(PETSC_COMM_SELF, PETSC_ERR_PLIB, "Face %d was pushed exceeding capacity %d > %d", coneA[c], *fBottom, fEnd-fStart); 115 } 116 if (posB < 0) SETERRQ2(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Face %d could not be located in cell %d", face, support[1]); 117 118 if (dim == 1) { 119 mismatch = posA == posB; 120 } else { 121 mismatch = coneOA[posA] == coneOB[posB]; 122 } 123 124 if (mismatch ^ (flippedA ^ flippedB)) { 125 if (seenA && seenB) SETERRQ2(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Previously seen cells %d and %d do not match: Fault mesh is non-orientable", support[0], support[1]); 126 if (!seenA && !flippedA) { 127 ierr = PetscBTSet(flippedCells, support[0]-cStart);CHKERRQ(ierr); 128 } else if (!seenB && !flippedB) { 129 ierr = PetscBTSet(flippedCells, support[1]-cStart);CHKERRQ(ierr); 130 } else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Inconsistent mesh orientation: Fault mesh is non-orientable"); 131 } else if (mismatch && flippedA && flippedB) SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Attempt to flip already flipped cell: Fault mesh is non-orientable"); 132 ierr = PetscBTSet(seenCells, support[0]-cStart);CHKERRQ(ierr); 133 ierr = PetscBTSet(seenCells, support[1]-cStart);CHKERRQ(ierr); 134 PetscFunctionReturn(0); 135 } 136 137 #undef __FUNCT__ 138 #define __FUNCT__ "DMPlexOrient" 139 /*@ 140 DMPlexOrient - Give a consistent orientation to the input mesh 141 142 Input Parameters: 143 . dm - The DM 144 145 Note: The orientation data for the DM are change in-place. 146 $ This routine will fail for non-orientable surfaces, such as the Moebius strip. 147 148 Level: advanced 149 150 .seealso: DMCreate(), DMPLEX 151 @*/ 152 PetscErrorCode DMPlexOrient(DM dm) 153 { 154 MPI_Comm comm; 155 PetscBT seenCells, flippedCells, seenFaces; 156 PetscInt *faceFIFO, fTop, fBottom; 157 PetscInt dim, h, cStart, cEnd, c, fStart, fEnd, face; 158 PetscBool flg; 159 PetscErrorCode ierr; 160 161 PetscFunctionBegin; 162 ierr = PetscObjectGetComm((PetscObject) dm, &comm);CHKERRQ(ierr); 163 ierr = PetscOptionsHasName(((PetscObject) dm)->prefix, "-orientation_view", &flg);CHKERRQ(ierr); 164 /* Truth Table 165 mismatch flips do action mismatch flipA ^ flipB action 166 F 0 flips no F F F 167 F 1 flip yes F T T 168 F 2 flips no T F T 169 T 0 flips yes T T F 170 T 1 flip no 171 T 2 flips yes 172 */ 173 ierr = DMGetDimension(dm, &dim);CHKERRQ(ierr); 174 ierr = DMPlexGetVTKCellHeight(dm, &h);CHKERRQ(ierr); 175 ierr = DMPlexGetHeightStratum(dm, h, &cStart, &cEnd);CHKERRQ(ierr); 176 ierr = DMPlexGetHeightStratum(dm, h+1, &fStart, &fEnd);CHKERRQ(ierr); 177 ierr = PetscBTCreate(cEnd - cStart, &seenCells);CHKERRQ(ierr); 178 ierr = PetscBTMemzero(cEnd - cStart, seenCells);CHKERRQ(ierr); 179 ierr = PetscBTCreate(cEnd - cStart, &flippedCells);CHKERRQ(ierr); 180 ierr = PetscBTMemzero(cEnd - cStart, flippedCells);CHKERRQ(ierr); 181 ierr = PetscBTCreate(fEnd - fStart, &seenFaces);CHKERRQ(ierr); 182 ierr = PetscBTMemzero(fEnd - fStart, seenFaces);CHKERRQ(ierr); 183 ierr = PetscMalloc1((fEnd - fStart), &faceFIFO);CHKERRQ(ierr); 184 fTop = fBottom = 0; 185 /* Initialize FIFO with first cell */ 186 if (cEnd > cStart) { 187 const PetscInt *cone; 188 PetscInt coneSize; 189 190 ierr = DMPlexGetConeSize(dm, cStart, &coneSize);CHKERRQ(ierr); 191 ierr = DMPlexGetCone(dm, cStart, &cone);CHKERRQ(ierr); 192 for (c = 0; c < coneSize; ++c) { 193 faceFIFO[fBottom++] = cone[c]; 194 ierr = PetscBTSet(seenFaces, cone[c]-fStart);CHKERRQ(ierr); 195 } 196 } 197 /* Consider each face in FIFO */ 198 while (fTop < fBottom) { 199 ierr = DMPlexCheckFace_Internal(dm, face, faceFIFO, &fTop, &fBottom, cStart, fStart, fEnd, seenCells, flippedCells, seenFaces);CHKERRQ(ierr); 200 } 201 if (flg) { 202 PetscViewer v; 203 PetscMPIInt rank; 204 205 ierr = MPI_Comm_rank(comm, &rank);CHKERRQ(ierr); 206 ierr = PetscViewerASCIIGetStdout(comm, &v);CHKERRQ(ierr); 207 ierr = PetscViewerASCIISynchronizedAllow(v, PETSC_TRUE);CHKERRQ(ierr); 208 ierr = PetscViewerASCIISynchronizedPrintf(v, "[%d]BT for serial seen faces:\n", rank);CHKERRQ(ierr); 209 ierr = PetscBTView(fEnd-fStart, seenFaces, v);CHKERRQ(ierr); 210 ierr = PetscViewerASCIISynchronizedAllow(v, PETSC_TRUE);CHKERRQ(ierr); 211 ierr = PetscViewerASCIISynchronizedPrintf(v, "[%d]BT for serial flipped cells:\n", rank);CHKERRQ(ierr); 212 ierr = PetscBTView(cEnd-cStart, flippedCells, v);CHKERRQ(ierr); 213 } 214 /* Now all subdomains are oriented, but we need a consistent parallel orientation */ 215 { 216 /* Find a representative face (edge) separating pairs of procs */ 217 PetscSF sf; 218 const PetscInt *lpoints; 219 const PetscSFNode *rpoints; 220 PetscInt *neighbors, *nranks; 221 PetscInt numLeaves, numRoots, numNeighbors = 0, l, n; 222 223 ierr = DMGetPointSF(dm, &sf);CHKERRQ(ierr); 224 ierr = PetscSFGetGraph(sf, &numRoots, &numLeaves, &lpoints, &rpoints);CHKERRQ(ierr); 225 if (numLeaves >= 0) { 226 const PetscInt *cone, *ornt, *support; 227 PetscInt coneSize, supportSize; 228 int *rornt, *lornt; /* PetscSF cannot handle smaller than int */ 229 PetscBool *match, flipped = PETSC_FALSE; 230 231 ierr = PetscMalloc1(numLeaves,&neighbors);CHKERRQ(ierr); 232 /* I know this is p^2 time in general, but for bounded degree its alright */ 233 for (l = 0; l < numLeaves; ++l) { 234 const PetscInt face = lpoints[l]; 235 if ((face >= fStart) && (face < fEnd)) { 236 const PetscInt rank = rpoints[l].rank; 237 for (n = 0; n < numNeighbors; ++n) if (rank == rpoints[neighbors[n]].rank) break; 238 if (n >= numNeighbors) { 239 PetscInt supportSize; 240 ierr = DMPlexGetSupportSize(dm, face, &supportSize);CHKERRQ(ierr); 241 if (supportSize != 1) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Boundary faces should see one cell, not %d", supportSize); 242 neighbors[numNeighbors++] = l; 243 } 244 } 245 } 246 ierr = PetscCalloc4(numNeighbors,&match,numNeighbors,&nranks,numRoots,&rornt,numRoots,&lornt);CHKERRQ(ierr); 247 for (face = fStart; face < fEnd; ++face) { 248 ierr = DMPlexGetSupportSize(dm, face, &supportSize);CHKERRQ(ierr); 249 if (supportSize != 1) continue; 250 ierr = DMPlexGetSupport(dm, face, &support);CHKERRQ(ierr); 251 252 ierr = DMPlexGetCone(dm, support[0], &cone);CHKERRQ(ierr); 253 ierr = DMPlexGetConeSize(dm, support[0], &coneSize);CHKERRQ(ierr); 254 ierr = DMPlexGetConeOrientation(dm, support[0], &ornt);CHKERRQ(ierr); 255 for (c = 0; c < coneSize; ++c) if (cone[c] == face) break; 256 if (dim == 1) { 257 /* Use cone position instead, shifted to -1 or 1 */ 258 rornt[face] = c*2-1; 259 } else { 260 if (PetscBTLookup(flippedCells, support[0]-cStart)) rornt[face] = ornt[c] < 0 ? -1 : 1; 261 else rornt[face] = ornt[c] < 0 ? 1 : -1; 262 } 263 } 264 /* Mark each edge with match or nomatch */ 265 ierr = PetscSFBcastBegin(sf, MPI_INT, rornt, lornt);CHKERRQ(ierr); 266 ierr = PetscSFBcastEnd(sf, MPI_INT, rornt, lornt);CHKERRQ(ierr); 267 for (n = 0; n < numNeighbors; ++n) { 268 const PetscInt face = lpoints[neighbors[n]]; 269 270 if (rornt[face]*lornt[face] < 0) match[n] = PETSC_TRUE; 271 else match[n] = PETSC_FALSE; 272 nranks[n] = rpoints[neighbors[n]].rank; 273 } 274 /* Collect the graph on 0 */ 275 { 276 Mat G; 277 PetscBT seenProcs, flippedProcs; 278 PetscInt *procFIFO, pTop, pBottom; 279 PetscInt *adj = NULL; 280 PetscBool *val = NULL; 281 PetscMPIInt *recvcounts = NULL, *displs = NULL, p; 282 PetscMPIInt N = numNeighbors, numProcs = 0, rank; 283 PetscInt debug = 0; 284 285 ierr = MPI_Comm_rank(comm, &rank);CHKERRQ(ierr); 286 if (!rank) {ierr = MPI_Comm_size(comm, &numProcs);CHKERRQ(ierr);} 287 ierr = PetscCalloc2(numProcs,&recvcounts,numProcs+1,&displs);CHKERRQ(ierr); 288 ierr = MPI_Gather(&N, 1, MPI_INT, recvcounts, 1, MPI_INT, 0, comm);CHKERRQ(ierr); 289 for (p = 0; p < numProcs; ++p) { 290 displs[p+1] = displs[p] + recvcounts[p]; 291 } 292 if (!rank) {ierr = PetscMalloc2(displs[numProcs],&adj,displs[numProcs],&val);CHKERRQ(ierr);} 293 ierr = MPI_Gatherv(nranks, numNeighbors, MPIU_INT, adj, recvcounts, displs, MPIU_INT, 0, comm);CHKERRQ(ierr); 294 ierr = MPI_Gatherv(match, numNeighbors, MPIU_BOOL, val, recvcounts, displs, MPIU_BOOL, 0, comm);CHKERRQ(ierr); 295 if (debug) { 296 for (p = 0; p < numProcs; ++p) { 297 ierr = PetscPrintf(comm, "Proc %d:\n", p); 298 for (n = 0; n < recvcounts[p]; ++n) { 299 ierr = PetscPrintf(comm, " edge %d (%d):\n", adj[displs[p]+n], val[displs[p]+n]); 300 } 301 } 302 } 303 /* Symmetrize the graph */ 304 ierr = MatCreate(PETSC_COMM_SELF, &G);CHKERRQ(ierr); 305 ierr = MatSetSizes(G, numProcs, numProcs, numProcs, numProcs);CHKERRQ(ierr); 306 ierr = MatSetUp(G);CHKERRQ(ierr); 307 for (p = 0; p < numProcs; ++p) { 308 for (n = 0; n < recvcounts[p]; ++n) { 309 const PetscInt r = p; 310 const PetscInt q = adj[displs[p]+n]; 311 const PetscScalar o = val[displs[p]+n] ? 1.0 : 0.0; 312 313 ierr = MatSetValues(G, 1, &r, 1, &q, &o, INSERT_VALUES);CHKERRQ(ierr); 314 ierr = MatSetValues(G, 1, &q, 1, &r, &o, INSERT_VALUES);CHKERRQ(ierr); 315 } 316 } 317 ierr = MatAssemblyBegin(G, MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 318 ierr = MatAssemblyEnd(G, MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 319 320 ierr = PetscBTCreate(numProcs, &seenProcs);CHKERRQ(ierr); 321 ierr = PetscBTMemzero(numProcs, seenProcs);CHKERRQ(ierr); 322 ierr = PetscBTCreate(numProcs, &flippedProcs);CHKERRQ(ierr); 323 ierr = PetscBTMemzero(numProcs, flippedProcs);CHKERRQ(ierr); 324 ierr = PetscMalloc1(numProcs,&procFIFO);CHKERRQ(ierr); 325 pTop = pBottom = 0; 326 for (p = 0; p < numProcs; ++p) { 327 if (PetscBTLookup(seenProcs, p)) continue; 328 /* Initialize FIFO with next proc */ 329 procFIFO[pBottom++] = p; 330 ierr = PetscBTSet(seenProcs, p);CHKERRQ(ierr); 331 /* Consider each proc in FIFO */ 332 while (pTop < pBottom) { 333 const PetscScalar *ornt; 334 const PetscInt *neighbors; 335 PetscInt proc, nproc, seen, flippedA, flippedB, mismatch, numNeighbors; 336 337 proc = procFIFO[pTop++]; 338 flippedA = PetscBTLookup(flippedProcs, proc) ? 1 : 0; 339 ierr = MatGetRow(G, proc, &numNeighbors, &neighbors, &ornt);CHKERRQ(ierr); 340 /* Loop over neighboring procs */ 341 for (n = 0; n < numNeighbors; ++n) { 342 nproc = neighbors[n]; 343 mismatch = PetscRealPart(ornt[n]) > 0.5 ? 0 : 1; 344 seen = PetscBTLookup(seenProcs, nproc); 345 flippedB = PetscBTLookup(flippedProcs, nproc) ? 1 : 0; 346 347 if (mismatch ^ (flippedA ^ flippedB)) { 348 if (seen) SETERRQ2(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Previously seen procs %d and %d do not match: Fault mesh is non-orientable", proc, nproc); 349 if (!flippedB) { 350 ierr = PetscBTSet(flippedProcs, nproc);CHKERRQ(ierr); 351 } else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Inconsistent mesh orientation: Fault mesh is non-orientable"); 352 } else if (mismatch && flippedA && flippedB) SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Attempt to flip already flipped cell: Fault mesh is non-orientable"); 353 if (!seen) { 354 procFIFO[pBottom++] = nproc; 355 ierr = PetscBTSet(seenProcs, nproc);CHKERRQ(ierr); 356 } 357 } 358 } 359 } 360 ierr = PetscFree(procFIFO);CHKERRQ(ierr); 361 ierr = MatDestroy(&G);CHKERRQ(ierr); 362 363 ierr = PetscFree2(recvcounts,displs);CHKERRQ(ierr); 364 ierr = PetscFree2(adj,val);CHKERRQ(ierr); 365 { 366 PetscBool *flips; 367 368 ierr = PetscMalloc1(numProcs,&flips);CHKERRQ(ierr); 369 for (p = 0; p < numProcs; ++p) { 370 flips[p] = PetscBTLookup(flippedProcs, p) ? PETSC_TRUE : PETSC_FALSE; 371 if (debug && flips[p]) {ierr = PetscPrintf(comm, "Flipping Proc %d:\n", p);} 372 } 373 ierr = MPI_Scatter(flips, 1, MPIU_BOOL, &flipped, 1, MPIU_BOOL, 0, comm);CHKERRQ(ierr); 374 ierr = PetscFree(flips);CHKERRQ(ierr); 375 } 376 ierr = PetscBTDestroy(&seenProcs);CHKERRQ(ierr); 377 ierr = PetscBTDestroy(&flippedProcs);CHKERRQ(ierr); 378 } 379 ierr = PetscFree4(match,nranks,rornt,lornt);CHKERRQ(ierr); 380 ierr = PetscFree(neighbors);CHKERRQ(ierr); 381 if (flipped) {for (c = cStart; c < cEnd; ++c) {ierr = PetscBTNegate(flippedCells, c-cStart);CHKERRQ(ierr);}} 382 } 383 } 384 if (flg) { 385 PetscViewer v; 386 PetscMPIInt rank; 387 388 ierr = MPI_Comm_rank(comm, &rank);CHKERRQ(ierr); 389 ierr = PetscViewerASCIIGetStdout(comm, &v);CHKERRQ(ierr); 390 ierr = PetscViewerASCIISynchronizedAllow(v, PETSC_TRUE);CHKERRQ(ierr); 391 ierr = PetscViewerASCIISynchronizedPrintf(v, "[%d]BT for parallel flipped cells:\n", rank);CHKERRQ(ierr); 392 ierr = PetscBTView(cEnd-cStart, flippedCells, v);CHKERRQ(ierr); 393 } 394 /* Reverse flipped cells in the mesh */ 395 for (c = cStart; c < cEnd; ++c) { 396 if (PetscBTLookup(flippedCells, c-cStart)) {ierr = DMPlexReverseCell(dm, c);CHKERRQ(ierr);} 397 } 398 ierr = PetscBTDestroy(&seenCells);CHKERRQ(ierr); 399 ierr = PetscBTDestroy(&flippedCells);CHKERRQ(ierr); 400 ierr = PetscBTDestroy(&seenFaces);CHKERRQ(ierr); 401 ierr = PetscFree(faceFIFO);CHKERRQ(ierr); 402 PetscFunctionReturn(0); 403 } 404