1 #include <petsc/private/dmmbimpl.h> /*I "petscdmmoab.h" I*/ 2 #include <petsc/private/vecimpl.h> 3 4 #include <petscdmmoab.h> 5 #include <MBTagConventions.hpp> 6 #include <moab/ReadUtilIface.hpp> 7 #include <moab/MergeMesh.hpp> 8 #include <moab/CN.hpp> 9 10 typedef struct { 11 // options 12 PetscInt A,B,C,M,N,K,dim; 13 PetscInt blockSizeVertexXYZ[3]; // Number of element blocks per partition 14 PetscInt blockSizeElementXYZ[3]; 15 PetscReal xyzbounds[6]; // the physical size of the domain 16 bool newMergeMethod,keep_skins,simplex,adjEnts; 17 18 // compute params 19 PetscReal dx,dy,dz; 20 PetscInt NX,NY,NZ,nex,ney,nez; 21 PetscInt q,xstride,ystride,zstride; 22 PetscBool usrxyzgrid,usrprocgrid,usrrefgrid; 23 PetscInt fraction,remainder,cumfraction; 24 PetscLogEvent generateMesh, generateElements, generateVertices, parResolve; 25 26 } DMMoabMeshGeneratorCtx; 27 28 29 #undef __FUNCT__ 30 #define __FUNCT__ "DMMoab_SetTensorElementConnectivity_Private" 31 PetscInt DMMoab_SetTensorElementConnectivity_Private(DMMoabMeshGeneratorCtx& genCtx, PetscInt offset, PetscInt corner, std::vector<PetscInt>& subent_conn, moab::EntityHandle *connectivity) 32 { 33 switch(genCtx.dim) { 34 case 1: 35 subent_conn.resize(2); 36 moab::CN::SubEntityVertexIndices(moab::MBEDGE, 1, 0, subent_conn.data()); 37 connectivity[offset+subent_conn[0]] = corner; 38 connectivity[offset+subent_conn[1]] = corner + 1; 39 break; 40 case 2: 41 subent_conn.resize(4); 42 moab::CN::SubEntityVertexIndices(moab::MBQUAD, 2, 0, subent_conn.data()); 43 connectivity[offset+subent_conn[0]] = corner; 44 connectivity[offset+subent_conn[1]] = corner + 1; 45 connectivity[offset+subent_conn[2]] = corner + 1 + genCtx.ystride; 46 connectivity[offset+subent_conn[3]] = corner + genCtx.ystride; 47 break; 48 case 3: 49 default: 50 subent_conn.resize(8); 51 moab::CN::SubEntityVertexIndices(moab::MBHEX, 3, 0, subent_conn.data()); 52 connectivity[offset+subent_conn[0]] = corner; 53 connectivity[offset+subent_conn[1]] = corner + 1; 54 connectivity[offset+subent_conn[2]] = corner + 1 + genCtx.ystride; 55 connectivity[offset+subent_conn[3]] = corner + genCtx.ystride; 56 connectivity[offset+subent_conn[4]] = corner + genCtx.zstride; 57 connectivity[offset+subent_conn[5]] = corner + 1 + genCtx.zstride; 58 connectivity[offset+subent_conn[6]] = corner + 1 + genCtx.ystride + genCtx.zstride; 59 connectivity[offset+subent_conn[7]] = corner + genCtx.ystride + genCtx.zstride; 60 break; 61 } 62 return subent_conn.size(); 63 } 64 65 66 #undef __FUNCT__ 67 #define __FUNCT__ "DMMoab_SetSimplexElementConnectivity_Private" 68 PetscInt DMMoab_SetSimplexElementConnectivity_Private(DMMoabMeshGeneratorCtx& genCtx, PetscInt subelem, PetscInt offset, PetscInt corner, std::vector<PetscInt>& subent_conn, moab::EntityHandle *connectivity) 69 { 70 PetscInt A, B, C, D, E, F, G, H, M; 71 const PetscInt trigen_opts=1; /* 1 - Aligned diagonally to right, 2 - Aligned diagonally to left, 3 - 4 elements per quad */ 72 A = corner; 73 B = corner + 1; 74 switch(genCtx.dim) { 75 case 1: 76 subent_conn.resize(2); /* only linear EDGE supported now */ 77 moab::CN::SubEntityVertexIndices(moab::MBEDGE, 1, 0, subent_conn.data()); 78 connectivity[offset+subent_conn[0]] = A; 79 connectivity[offset+subent_conn[1]] = B; 80 break; 81 case 2: 82 C = corner + 1 + genCtx.ystride; 83 D = corner + genCtx.ystride; 84 M = corner + 0.5; // technically -- need to modify vertex generation 85 subent_conn.resize(3); /* only linear TRI supported */ 86 moab::CN::SubEntityVertexIndices(moab::MBTRI, 2, 0, subent_conn.data()); 87 if (trigen_opts == 1) { 88 if (subelem) { /* 0 1 2 of a QUAD */ 89 connectivity[offset+subent_conn[0]] = B; 90 connectivity[offset+subent_conn[1]] = C; 91 connectivity[offset+subent_conn[2]] = A; 92 } 93 else { /* 2 3 0 of a QUAD */ 94 connectivity[offset+subent_conn[0]] = D; 95 connectivity[offset+subent_conn[1]] = A; 96 connectivity[offset+subent_conn[2]] = C; 97 } 98 } 99 else if (trigen_opts == 2) { 100 if (subelem) { /* 0 1 2 of a QUAD */ 101 connectivity[offset+subent_conn[0]] = A; 102 connectivity[offset+subent_conn[1]] = B; 103 connectivity[offset+subent_conn[2]] = D; 104 } 105 else { /* 2 3 0 of a QUAD */ 106 connectivity[offset+subent_conn[0]] = C; 107 connectivity[offset+subent_conn[1]] = D; 108 connectivity[offset+subent_conn[2]] = B; 109 } 110 } 111 else { 112 switch (subelem) { /* 0 1 2 of a QUAD */ 113 case 0: 114 connectivity[offset+subent_conn[0]] = A; 115 connectivity[offset+subent_conn[1]] = B; 116 connectivity[offset+subent_conn[2]] = M; 117 break; 118 case 1: 119 connectivity[offset+subent_conn[0]] = B; 120 connectivity[offset+subent_conn[1]] = C; 121 connectivity[offset+subent_conn[2]] = M; 122 break; 123 case 2: 124 connectivity[offset+subent_conn[0]] = C; 125 connectivity[offset+subent_conn[1]] = D; 126 connectivity[offset+subent_conn[2]] = M; 127 break; 128 case 3: 129 connectivity[offset+subent_conn[0]] = D; 130 connectivity[offset+subent_conn[1]] = A; 131 connectivity[offset+subent_conn[2]] = M; 132 break; 133 } 134 } 135 break; 136 case 3: 137 default: 138 C = corner + 1 + genCtx.ystride; 139 D = corner + genCtx.ystride; 140 E = corner + genCtx.zstride; 141 F = corner + 1 + genCtx.zstride; 142 G = corner + 1 + genCtx.ystride + genCtx.zstride; 143 H = corner + genCtx.ystride + genCtx.zstride; 144 subent_conn.resize(4); /* only linear TET supported */ 145 moab::CN::SubEntityVertexIndices(moab::MBTET, 3, 0, subent_conn.data()); 146 switch(subelem) { 147 case 0: /* 4 3 7 6 of a HEX */ 148 connectivity[offset+subent_conn[0]] = E; 149 connectivity[offset+subent_conn[1]] = D; 150 connectivity[offset+subent_conn[2]] = H; 151 connectivity[offset+subent_conn[3]] = G; 152 break; 153 case 1: /* 0 1 2 5 of a HEX */ 154 connectivity[offset+subent_conn[0]] = A; 155 connectivity[offset+subent_conn[1]] = B; 156 connectivity[offset+subent_conn[2]] = C; 157 connectivity[offset+subent_conn[3]] = F; 158 break; 159 case 2: /* 0 3 4 5 of a HEX */ 160 connectivity[offset+subent_conn[0]] = A; 161 connectivity[offset+subent_conn[1]] = D; 162 connectivity[offset+subent_conn[2]] = E; 163 connectivity[offset+subent_conn[3]] = F; 164 break; 165 case 3: /* 2 6 3 5 of a HEX */ 166 connectivity[offset+subent_conn[0]] = C; 167 connectivity[offset+subent_conn[1]] = G; 168 connectivity[offset+subent_conn[2]] = D; 169 connectivity[offset+subent_conn[3]] = F; 170 break; 171 case 4: /* 0 2 3 5 of a HEX */ 172 connectivity[offset+subent_conn[0]] = A; 173 connectivity[offset+subent_conn[1]] = C; 174 connectivity[offset+subent_conn[2]] = D; 175 connectivity[offset+subent_conn[3]] = F; 176 break; 177 case 5: /* 3 6 4 5 of a HEX */ 178 connectivity[offset+subent_conn[0]] = D; 179 connectivity[offset+subent_conn[1]] = G; 180 connectivity[offset+subent_conn[2]] = E; 181 connectivity[offset+subent_conn[3]] = F; 182 break; 183 } 184 break; 185 } 186 return subent_conn.size(); 187 } 188 189 190 #undef __FUNCT__ 191 #define __FUNCT__ "DMMoab_SetElementConnectivity_Private" 192 std::pair<PetscInt,PetscInt> DMMoab_SetElementConnectivity_Private(DMMoabMeshGeneratorCtx& genCtx, PetscInt offset, PetscInt corner, moab::EntityHandle *connectivity) 193 { 194 PetscInt vcount=0; 195 PetscInt simplices_per_tensor[4] = {0,1,2,6}; 196 std::vector<PetscInt> subent_conn; /* only linear edge, tri, tet supported now */ 197 subent_conn.reserve(27); 198 PetscInt m,subelem; 199 if (genCtx.simplex) { 200 subelem=simplices_per_tensor[genCtx.dim]; 201 for (m=0; m<subelem; m++) { 202 vcount=DMMoab_SetSimplexElementConnectivity_Private(genCtx, m, offset, corner, subent_conn, connectivity); 203 offset+=vcount; 204 } 205 } 206 else { 207 subelem=1; 208 vcount=DMMoab_SetTensorElementConnectivity_Private(genCtx, offset, corner, subent_conn, connectivity); 209 } 210 return std::pair<PetscInt,PetscInt>(vcount*subelem,subelem); 211 } 212 213 214 #undef __FUNCT__ 215 #define __FUNCT__ "DMMoab_GenerateVertices_Private" 216 PetscErrorCode DMMoab_GenerateVertices_Private(moab::Interface *mbImpl, moab::ReadUtilIface *iface, DMMoabMeshGeneratorCtx& genCtx, PetscInt m, PetscInt n, PetscInt k, 217 PetscInt a, PetscInt b, PetscInt c, moab::Tag& global_id_tag, moab::EntityHandle& startv, moab::Range& uverts) 218 { 219 PetscInt x,y,z,ix,nnodes; 220 PetscErrorCode ierr; 221 PetscInt ii,jj,kk; 222 std::vector<PetscReal*> arrays; 223 PetscInt* gids; 224 moab::ErrorCode merr; 225 226 PetscFunctionBegin; 227 /* we will generate (q*block+1)^3 vertices, and block^3 hexas; q is 1 for linear, 2 for quadratic 228 * the global id of the vertices will come from m, n, k, a, b, c 229 * x will vary from m*A*q*block + a*q*block to m*A*q*block+(a+1)*q*block etc. 230 */ 231 nnodes = genCtx.blockSizeVertexXYZ[0]*(genCtx.dim>1? genCtx.blockSizeVertexXYZ[1]*(genCtx.dim>2 ? genCtx.blockSizeVertexXYZ[2]:1) :1); 232 ierr = PetscMalloc1(nnodes,&gids);CHKERRQ(ierr); 233 234 merr = iface->get_node_coords(3, nnodes, 0, startv, arrays);MBERR("Can't get node coords.", merr); 235 236 /* will start with the lower corner: */ 237 //x = ( m * genCtx.A + a ) * genCtx.q * genCtx.blockSizeElementXYZ[0]; 238 //y = ( n * genCtx.B + b ) * genCtx.q * genCtx.blockSizeElementXYZ[1]; 239 //z = ( k * genCtx.C + c ) * genCtx.q * genCtx.blockSizeElementXYZ[2]; 240 241 x = ( m * genCtx.A + a ) * genCtx.q; 242 y = ( n * genCtx.B + b ) * genCtx.q; 243 z = ( k * genCtx.C + c ) * genCtx.q; 244 PetscInfo3(NULL, "Starting offset for coordinates := %d, %d, %d\n",x,y,z); 245 ix = 0; 246 moab::Range verts(startv, startv + nnodes - 1); 247 for (kk = 0; kk < (genCtx.dim>2?genCtx.blockSizeVertexXYZ[2]:1); kk++) { 248 for (jj = 0; jj < (genCtx.dim>1?genCtx.blockSizeVertexXYZ[1]:1); jj++) { 249 for (ii = 0; ii < genCtx.blockSizeVertexXYZ[0]; ii++,ix++) { 250 /* set coordinates for the vertices */ 251 arrays[0][ix] = (x + ii)*genCtx.dx + genCtx.xyzbounds[0]; 252 arrays[1][ix] = (y + jj)*genCtx.dy + genCtx.xyzbounds[2]; 253 arrays[2][ix] = (z + kk)*genCtx.dz + genCtx.xyzbounds[4]; 254 PetscInfo3(NULL, "Creating vertex with coordinates := %f, %f, %f\n",arrays[0][ix],arrays[1][ix],arrays[2][ix]); 255 256 /* If we want to set some tags on the vertices -> use the following entity handle definition: 257 moab::EntityHandle v = startv + ix; 258 */ 259 /* compute the global ID for vertex */ 260 gids[ix] = 1 + (x + ii) + (y + jj) * genCtx.NX + (z + kk) * (genCtx.NX * genCtx.NY); 261 } 262 } 263 } 264 /* set global ID data on vertices */ 265 mbImpl->tag_set_data(global_id_tag, verts, &gids[0]); 266 verts.swap(uverts); 267 ierr = PetscFree(gids);CHKERRQ(ierr); 268 PetscFunctionReturn(0); 269 } 270 271 #undef __FUNCT__ 272 #define __FUNCT__ "DMMoab_GenerateElements_Private" 273 PetscErrorCode DMMoab_GenerateElements_Private(moab::Interface* mbImpl, moab::ReadUtilIface* iface, DMMoabMeshGeneratorCtx& genCtx, PetscInt m, PetscInt n, PetscInt k, 274 PetscInt a, PetscInt b, PetscInt c, moab::Tag& global_id_tag, moab::EntityHandle startv, moab::Range& cells) 275 { 276 moab::ErrorCode merr; 277 PetscInt ix,ie,xe,ye,ze; 278 PetscInt ii,jj,kk,nvperelem; 279 PetscInt simplices_per_tensor[4] = {0,1,2,6}; 280 PetscInt ntensorelems = genCtx.blockSizeElementXYZ[0]*(genCtx.dim>1? genCtx.blockSizeElementXYZ[1]*(genCtx.dim>2 ? genCtx.blockSizeElementXYZ[2]:1) :1); /*pow(genCtx.blockSizeElement,genCtx.dim);*/ 281 PetscInt nelems = ntensorelems; 282 moab::EntityHandle starte; // connectivity 283 moab::EntityHandle* conn; 284 285 PetscFunctionBegin; 286 switch(genCtx.dim) { 287 case 1: 288 nvperelem = 2; 289 merr = iface->get_element_connect(nelems, 2, moab::MBEDGE, 0, starte, conn);MBERR("Can't get EDGE2 element connectivity.", merr); 290 break; 291 case 2: 292 if (genCtx.simplex) { 293 nvperelem = 3; 294 nelems = ntensorelems*simplices_per_tensor[genCtx.dim]; 295 merr = iface->get_element_connect(nelems, 3, moab::MBTRI, 0, starte, conn);MBERR("Can't get TRI3 element connectivity.", merr); 296 } 297 else { 298 nvperelem = 4; 299 merr = iface->get_element_connect(nelems, 4, moab::MBQUAD, 0, starte, conn);MBERR("Can't get QUAD4 element connectivity.", merr); 300 } 301 break; 302 case 3: 303 default: 304 if (genCtx.simplex) { 305 nvperelem = 4; 306 nelems = ntensorelems*simplices_per_tensor[genCtx.dim]; 307 merr = iface->get_element_connect(nelems, 4, moab::MBTET, 0, starte, conn);MBERR("Can't get TET4 element connectivity.", merr); 308 } 309 else { 310 nvperelem = 8; 311 merr = iface->get_element_connect(nelems, 8, moab::MBHEX, 0, starte, conn);MBERR("Can't get HEX8 element connectivity.", merr); 312 } 313 break; 314 } 315 316 ix = ie = 0; // index now in the elements, for global ids 317 318 /* create a temporary range to store local element handles */ 319 moab::Range tmp(starte, starte + nelems - 1); 320 std::vector<PetscInt> gids(nelems); 321 322 /* identify the elements at the lower corner, for their global ids */ 323 xe = m * genCtx.A * genCtx.blockSizeElementXYZ[0] + a * genCtx.blockSizeElementXYZ[0]; 324 ye = (genCtx.dim > 1 ? n * genCtx.B * genCtx.blockSizeElementXYZ[1] + b * genCtx.blockSizeElementXYZ[1] : 0); 325 ze = (genCtx.dim > 2 ? k * genCtx.C * genCtx.blockSizeElementXYZ[2] + c * genCtx.blockSizeElementXYZ[2] : 0); 326 327 /* create owned elements requested by genCtx */ 328 for (kk = 0; kk < (genCtx.dim>2?genCtx.blockSizeElementXYZ[2]:1); kk++) { 329 for (jj = 0; jj < (genCtx.dim>1?genCtx.blockSizeElementXYZ[1]:1); jj++) { 330 for (ii = 0; ii < genCtx.blockSizeElementXYZ[0]; ii++) { 331 332 moab::EntityHandle corner = startv + genCtx.q * ii + genCtx.q * jj * genCtx.ystride + genCtx.q * kk * genCtx.zstride; 333 334 std::pair<PetscInt,PetscInt> entoffset = DMMoab_SetElementConnectivity_Private(genCtx, ix, corner, conn); 335 336 for (PetscInt j = 0; j < entoffset.second; j++) { 337 /* The entity handle for the particular element -> if we want to set some tags is 338 moab::EntityHandle eh = starte + ie + j; 339 */ 340 gids[ie+j] = 1 + ((xe + ii) + (ye + jj) * genCtx.nex + (ze + kk) * (genCtx.nex * genCtx.ney)); 341 //gids[ie+j] = ie + j + ((xe + ii) + (ye + jj) * genCtx.nex + (ze + kk) * (genCtx.nex * genCtx.ney)) ; 342 //gids[ie+j] = 1 + ie; 343 //ie++; 344 } 345 346 ix += entoffset.first; 347 ie += entoffset.second; 348 } 349 } 350 } 351 if (genCtx.adjEnts) { /* we need to update adjacencies now, because some elements are new */ 352 merr = iface->update_adjacencies(starte, nelems, nvperelem, conn);MBERR("Can't update adjacencies", merr); 353 } 354 tmp.swap(cells); 355 merr = mbImpl->tag_set_data(global_id_tag, cells, &gids[0]);MBERR("Can't set global ids to elements.", merr); 356 PetscFunctionReturn(0); 357 } 358 359 #undef __FUNCT__ 360 #define __FUNCT__ "DMMBUtil_InitializeOptions" 361 PetscErrorCode DMMBUtil_InitializeOptions(DMMoabMeshGeneratorCtx& genCtx, PetscInt dim, PetscBool simplex, PetscInt rank, PetscInt nprocs, const PetscReal* bounds, PetscInt nelems) 362 { 363 PetscFunctionBegin; 364 /* Initialize all genCtx data */ 365 genCtx.dim=dim; 366 genCtx.simplex=simplex; 367 genCtx.newMergeMethod=genCtx.keep_skins=genCtx.adjEnts=true; 368 /* determine other global quantities for the mesh used for nodes increments */ 369 genCtx.q = 1; 370 genCtx.fraction=genCtx.remainder=genCtx.cumfraction=0; 371 372 if (!genCtx.usrxyzgrid) { /* not overridden by genCtx - assume nele equally and that genCtx wants a uniform cube mesh */ 373 374 genCtx.fraction=nelems/nprocs; /* partition only by the largest dimension */ 375 genCtx.remainder=nelems%nprocs; /* remainder after partition which gets evenly distributed by round-robin */ 376 genCtx.cumfraction = (rank > 0 ? (genCtx.fraction) * (rank) + (rank-1 < genCtx.remainder ? rank : genCtx.remainder ) : 0); 377 if(rank < genCtx.remainder) /* This process gets "fraction+1" elements */ 378 genCtx.fraction++; 379 380 PetscInfo3(NULL,"Fraction = %D, Remainder = %D, Cumulative fraction = %D\n",genCtx.fraction,genCtx.remainder,genCtx.cumfraction); 381 switch(genCtx.dim) { 382 case 1: 383 genCtx.blockSizeElementXYZ[0]=genCtx.fraction; 384 genCtx.blockSizeElementXYZ[1]=1; 385 genCtx.blockSizeElementXYZ[2]=1; 386 break; 387 case 2: 388 genCtx.blockSizeElementXYZ[0]=nelems; 389 genCtx.blockSizeElementXYZ[1]=genCtx.fraction; 390 genCtx.blockSizeElementXYZ[2]=1; 391 break; 392 case 3: 393 default: 394 genCtx.blockSizeElementXYZ[0]=nelems; 395 genCtx.blockSizeElementXYZ[1]=nelems; 396 genCtx.blockSizeElementXYZ[2]=genCtx.fraction; 397 break; 398 } 399 } 400 401 /* partition only by the largest dimension */ 402 /* Total number of local elements := genCtx.blockSizeElementXYZ[0]*(genCtx.dim>1? genCtx.blockSizeElementXYZ[1]*(genCtx.dim>2 ? genCtx.blockSizeElementXYZ[2]:1) :1); */ 403 if (bounds) { 404 for (PetscInt i=0; i<6; i++) 405 genCtx.xyzbounds[i]=bounds[i]; 406 } 407 else { 408 genCtx.xyzbounds[0]=genCtx.xyzbounds[2]=genCtx.xyzbounds[4]=0.0; 409 genCtx.xyzbounds[1]=genCtx.xyzbounds[3]=genCtx.xyzbounds[5]=1.0; 410 } 411 412 if (!genCtx.usrprocgrid) { 413 switch(genCtx.dim) { 414 case 1: 415 genCtx.M=nprocs; 416 genCtx.N=genCtx.K=1; 417 break; 418 case 2: 419 genCtx.M=1; 420 genCtx.N=nprocs; 421 genCtx.K=1; 422 break; 423 default: 424 genCtx.M=1; 425 genCtx.N=1; 426 // genCtx.M=genCtx.N=1; 427 genCtx.K=nprocs; 428 break; 429 } 430 } 431 432 if (!genCtx.usrrefgrid) { 433 genCtx.A=genCtx.B=genCtx.C=1; 434 } 435 436 /* more default values */ 437 genCtx.nex=genCtx.ney=genCtx.nez=0; 438 genCtx.xstride=genCtx.ystride=genCtx.zstride=0; 439 genCtx.NX=genCtx.NY=genCtx.NZ=0; 440 genCtx.nex=genCtx.ney=genCtx.nez=0; 441 genCtx.blockSizeVertexXYZ[0]=genCtx.blockSizeVertexXYZ[1]=genCtx.blockSizeVertexXYZ[2]=1; 442 443 switch(genCtx.dim) { 444 case 3: 445 genCtx.blockSizeVertexXYZ[0] = genCtx.q*genCtx.blockSizeElementXYZ[0] + 1; 446 genCtx.blockSizeVertexXYZ[1] = genCtx.q*genCtx.blockSizeElementXYZ[1] + 1; 447 genCtx.blockSizeVertexXYZ[2] = genCtx.q*genCtx.blockSizeElementXYZ[2] + 1; 448 449 genCtx.nex = genCtx.M * genCtx.A * genCtx.blockSizeElementXYZ[0]; /* number of elements in x direction, used for global id on element */ 450 //genCtx.dx = (genCtx.xyzbounds[1]-genCtx.xyzbounds[0])/(genCtx.nex*genCtx.q); /* distance between 2 nodes in x direction */ 451 genCtx.dx = (genCtx.xyzbounds[1]-genCtx.xyzbounds[0])/(nelems*genCtx.q); /* distance between 2 nodes in x direction */ 452 genCtx.NX = (genCtx.q * genCtx.nex + 1); 453 genCtx.xstride = 1; 454 genCtx.ney = genCtx.N * genCtx.B * genCtx.blockSizeElementXYZ[1]; /* number of elements in y direction .... */ 455 genCtx.dy = (genCtx.xyzbounds[3]-genCtx.xyzbounds[2])/(nelems*genCtx.q); /* distance between 2 nodes in y direction */ 456 genCtx.NY = (genCtx.q * genCtx.ney + 1); 457 genCtx.ystride = genCtx.blockSizeVertexXYZ[0]; 458 genCtx.nez = genCtx.K * genCtx.C * genCtx.blockSizeElementXYZ[2]; /* number of elements in z direction .... */ 459 //genCtx.dz = (genCtx.xyzbounds[5]-genCtx.xyzbounds[4])/(genCtx.nez*genCtx.q); /* distance between 2 nodes in z direction */ 460 genCtx.dz = (genCtx.xyzbounds[5]-genCtx.xyzbounds[4])/(nelems*genCtx.q); /* distance between 2 nodes in z direction */ 461 genCtx.NZ = (genCtx.q * genCtx.nez + 1); 462 genCtx.zstride = genCtx.blockSizeVertexXYZ[0] * genCtx.blockSizeVertexXYZ[1]; 463 break; 464 case 2: 465 genCtx.blockSizeVertexXYZ[0] = genCtx.q*genCtx.blockSizeElementXYZ[0] + 1; 466 genCtx.blockSizeVertexXYZ[1] = genCtx.q*genCtx.blockSizeElementXYZ[1] + 1; 467 genCtx.blockSizeVertexXYZ[2]=0; 468 469 genCtx.nex = genCtx.M * genCtx.A * genCtx.blockSizeElementXYZ[0]; /* number of elements in x direction, used for global id on element */ 470 // genCtx.dx = (genCtx.xyzbounds[1]-genCtx.xyzbounds[0])/(genCtx.nex*genCtx.q); /* distance between 2 nodes in x direction */ 471 genCtx.dx = (genCtx.xyzbounds[1]-genCtx.xyzbounds[0])/(genCtx.nex*genCtx.q); /* distance between 2 nodes in x direction */ 472 genCtx.NX = (genCtx.q * genCtx.nex + 1); 473 genCtx.xstride = 1; 474 genCtx.ney = genCtx.N * genCtx.B * genCtx.blockSizeElementXYZ[1]; /* number of elements in y direction .... */ 475 // genCtx.dy = (genCtx.xyzbounds[3]-genCtx.xyzbounds[2])/(genCtx.ney*genCtx.q); /* distance between 2 nodes in y direction */ 476 genCtx.dy = (genCtx.xyzbounds[3]-genCtx.xyzbounds[2])/(nelems*genCtx.q); /* distance between 2 nodes in y direction */ 477 genCtx.NY = (genCtx.q * genCtx.ney + 1); 478 genCtx.ystride = genCtx.blockSizeVertexXYZ[0]; 479 break; 480 case 1: 481 genCtx.blockSizeVertexXYZ[1]=genCtx.blockSizeVertexXYZ[2]=0; 482 genCtx.blockSizeVertexXYZ[0] = genCtx.q*genCtx.blockSizeElementXYZ[0] + 1; 483 484 genCtx.nex = genCtx.M * genCtx.A * genCtx.blockSizeElementXYZ[0]; /* number of elements in x direction, used for global id on element */ 485 //genCtx.dx = (genCtx.xyzbounds[1]-genCtx.xyzbounds[0])/(genCtx.nex*genCtx.q); /* distance between 2 nodes in x direction */ 486 genCtx.dx = (genCtx.xyzbounds[1]-genCtx.xyzbounds[0])/(nelems*genCtx.q); /* distance between 2 nodes in x direction */ 487 genCtx.NX = (genCtx.q * genCtx.nex + 1); 488 genCtx.xstride = 1; 489 break; 490 } 491 492 /* Lets check for some valid input */ 493 if (genCtx.dim < 1 || genCtx.dim > 3) SETERRQ1(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"Invalid topological dimension specified: %d.\n",genCtx.dim); 494 if (genCtx.M * genCtx.N * genCtx.K != nprocs) SETERRQ4(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"Invalid [m, n, k] data: %d, %d, %d. Product must be equal to global size = %d.\n",genCtx.M,genCtx.N,genCtx.K,nprocs); 495 if (genCtx.xyzbounds) { 496 /* validate the bounds data */ 497 if(genCtx.xyzbounds[0] >= genCtx.xyzbounds[1]) SETERRQ2(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"X-dim: Left boundary cannot be greater than right. [%G >= %G]\n",genCtx.xyzbounds[0],genCtx.xyzbounds[1]); 498 if(genCtx.dim > 1 && (genCtx.xyzbounds[2] >= genCtx.xyzbounds[3])) SETERRQ2(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"Y-dim: Left boundary cannot be greater than right. [%G >= %G]\n",genCtx.xyzbounds[2],genCtx.xyzbounds[3]); 499 if(genCtx.dim > 2 && (genCtx.xyzbounds[4] >= genCtx.xyzbounds[5])) SETERRQ2(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"Z-dim: Left boundary cannot be greater than right. [%G >= %G]\n",genCtx.xyzbounds[4],genCtx.xyzbounds[5]); 500 } 501 502 PetscInfo3(NULL, "Local elements:= %d, %d, %d\n",genCtx.blockSizeElementXYZ[0],genCtx.blockSizeElementXYZ[1],genCtx.blockSizeElementXYZ[2]); 503 PetscInfo3(NULL, "Local vertices:= %d, %d, %d\n",genCtx.blockSizeVertexXYZ[0],genCtx.blockSizeVertexXYZ[1],genCtx.blockSizeVertexXYZ[2]); 504 PetscInfo3(NULL, "Local blocks/processors := %d, %d, %d\n",genCtx.A,genCtx.B,genCtx.C); 505 PetscInfo3(NULL, "Local processors := %d, %d, %d\n",genCtx.M,genCtx.N,genCtx.K); 506 PetscInfo3(NULL, "Local nexyz:= %d, %d, %d\n",genCtx.nex,genCtx.ney,genCtx.nez); 507 PetscInfo3(NULL, "Local delxyz:= %g, %g, %g\n",genCtx.dx,genCtx.dy,genCtx.dz); 508 PetscInfo3(NULL, "Local strides:= %d, %d, %d\n",genCtx.xstride,genCtx.ystride,genCtx.zstride); 509 510 PetscFunctionReturn(0); 511 } 512 513 /*@ 514 DMMoabCreateBoxMesh - Creates a mesh on the tensor product (box) of intervals with genCtx specified bounds. 515 516 Collective on MPI_Comm 517 518 Input Parameters: 519 + comm - The communicator for the DM object 520 . dim - The spatial dimension 521 . bounds - The bounds of the box specified with [x-left, x-right, y-bottom, y-top, z-bottom, z-top] depending on the spatial dimension 522 . nele - The number of discrete elements in each direction 523 . user_nghost - The number of ghosted layers needed in the partitioned mesh 524 525 Output Parameter: 526 . dm - The DM object 527 528 Level: beginner 529 530 .keywords: DM, create 531 .seealso: DMSetType(), DMCreate(), DMMoabLoadFromFile() 532 @*/ 533 PetscErrorCode DMMoabCreateBoxMesh(MPI_Comm comm, PetscInt dim, PetscBool useSimplex, const PetscReal* bounds, PetscInt nele, PetscInt nghost, DM *dm) 534 { 535 PetscErrorCode ierr; 536 moab::ErrorCode merr; 537 PetscInt a,b,c,n,global_size,global_rank; 538 DM_Moab *dmmoab; 539 moab::Interface *mbImpl; 540 #ifdef MOAB_HAVE_MPI 541 moab::ParallelComm *pcomm; 542 #endif 543 moab::ReadUtilIface *readMeshIface; 544 moab::Range verts,cells,edges,faces,adj,dim3,dim2; 545 DMMoabMeshGeneratorCtx genCtx; 546 const PetscInt npts=nele+1; /* Number of points in every dimension */ 547 548 moab::Tag global_id_tag,part_tag,geom_tag; 549 moab::Range ownedvtx,ownedelms,localvtxs,localelms; 550 moab::EntityHandle regionset; 551 PetscInt ml=0,nl=0,kl=0; 552 553 PetscFunctionBegin; 554 if(dim < 1 || dim > 3) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"Invalid dimension argument for mesh: dim=[1,3].\n"); 555 556 ierr = PetscLogEventRegister("GenerateMesh", DM_CLASSID, &genCtx.generateMesh);CHKERRQ(ierr); 557 ierr = PetscLogEventRegister("AddVertices", DM_CLASSID, &genCtx.generateVertices);CHKERRQ(ierr); 558 ierr = PetscLogEventRegister("AddElements", DM_CLASSID, &genCtx.generateElements);CHKERRQ(ierr); 559 ierr = PetscLogEventRegister("ParResolve", DM_CLASSID, &genCtx.parResolve);CHKERRQ(ierr); 560 ierr = PetscLogEventBegin(genCtx.generateMesh,0,0,0,0);CHKERRQ(ierr); 561 ierr = MPI_Comm_size(comm, &global_size);CHKERRQ(ierr); 562 /* total number of vertices in all dimensions */ 563 n=pow(npts,dim); 564 565 /* do some error checking */ 566 if(n < 2) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"Number of points must be >= 2.\n"); 567 if(global_size > n) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"Number of processors must be less than or equal to number of elements.\n"); 568 if(nghost < 0) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"Number of ghost layers cannot be negative.\n"); 569 570 /* Create the basic DMMoab object and keep the default parameters created by DM impls */ 571 ierr = DMMoabCreateMoab(comm, NULL, NULL, NULL, dm);CHKERRQ(ierr); 572 573 /* get all the necessary handles from the private DM object */ 574 dmmoab = (DM_Moab*)(*dm)->data; 575 mbImpl = dmmoab->mbiface; 576 #ifdef MOAB_HAVE_MPI 577 pcomm = dmmoab->pcomm; 578 global_rank = pcomm->rank(); 579 #else 580 global_rank = 0; 581 global_size = 1; 582 #endif 583 global_id_tag = dmmoab->ltog_tag; 584 dmmoab->dim = dim; 585 dmmoab->nghostrings=nghost; 586 dmmoab->refct = 1; 587 588 /* create a file set to associate all entities in current mesh */ 589 merr = mbImpl->create_meshset(moab::MESHSET_SET, dmmoab->fileset);MBERR("Creating file set failed", merr); 590 591 /* No errors yet; proceed with building the mesh */ 592 merr = mbImpl->query_interface(readMeshIface);MBERRNM(merr); 593 594 genCtx.M=genCtx.N=genCtx.K=1; 595 genCtx.A=genCtx.B=genCtx.C=1; 596 597 ierr = PetscOptionsBegin(comm,"","DMMoab Creation Options","DMMOAB");CHKERRQ(ierr); 598 /* Handle DMMoab spatial resolution */ 599 PetscOptionsInt("-dmb_grid_x","Number of grid points in x direction","DMMoabSetSizes",genCtx.blockSizeElementXYZ[0],&genCtx.blockSizeElementXYZ[0],&genCtx.usrxyzgrid); 600 if (dim > 1) {PetscOptionsInt("-dmb_grid_y","Number of grid points in y direction","DMMoabSetSizes",genCtx.blockSizeElementXYZ[1],&genCtx.blockSizeElementXYZ[1],&genCtx.usrxyzgrid);} 601 if (dim > 2) {PetscOptionsInt("-dmb_grid_z","Number of grid points in z direction","DMMoabSetSizes",genCtx.blockSizeElementXYZ[2],&genCtx.blockSizeElementXYZ[2],&genCtx.usrxyzgrid);} 602 603 /* Handle DMMoab parallel distibution */ 604 PetscOptionsInt("-dmb_processors_x","Number of processors in x direction","DMMoabSetNumProcs",genCtx.M,&genCtx.M,&genCtx.usrprocgrid); 605 if (dim > 1) {PetscOptionsInt("-dmb_processors_y","Number of processors in y direction","DMMoabSetNumProcs",genCtx.N,&genCtx.N,&genCtx.usrprocgrid);} 606 if (dim > 2) {PetscOptionsInt("-dmb_processors_z","Number of processors in z direction","DMMoabSetNumProcs",genCtx.K,&genCtx.K,&genCtx.usrprocgrid);} 607 608 /* Handle DMMoab block refinement */ 609 PetscOptionsInt("-dmb_refine_x","Number of refinement blocks in x direction","DMMoabSetRefinement",genCtx.A,&genCtx.A,&genCtx.usrrefgrid); 610 if (dim > 1) {PetscOptionsInt("-dmb_refine_y","Number of refinement blocks in y direction","DMMoabSetRefinement",genCtx.B,&genCtx.B,&genCtx.usrrefgrid);} 611 if (dim > 2) {PetscOptionsInt("-dmb_refine_z","Number of refinement blocks in z direction","DMMoabSetRefinement",genCtx.C,&genCtx.C,&genCtx.usrrefgrid);} 612 PetscOptionsEnd(); 613 614 ierr = DMMBUtil_InitializeOptions(genCtx, dim, useSimplex, global_rank, global_size, bounds, nele);CHKERRQ(ierr); 615 616 //if(nele<nprocs) SETERRQ2(PETSC_COMM_WORLD,PETSC_ERR_ARG_OUTOFRANGE,"The dimensional discretization size should be greater or equal to number of processors: %D < %D",nele,nprocs); 617 618 if (genCtx.adjEnts) genCtx.keep_skins = true; /* do not delete anything - consumes more memory */ 619 620 /* determine m, n, k for processor rank */ 621 ml=nl=kl=0; 622 switch(genCtx.dim) { 623 case 1: 624 ml=(genCtx.cumfraction); 625 break; 626 case 2: 627 nl=(genCtx.cumfraction); 628 break; 629 default: 630 kl=(genCtx.cumfraction)/genCtx.q / genCtx.blockSizeElementXYZ[2] / genCtx.C;//genCtx.K 631 break; 632 } 633 634 /* 635 * so there are a total of M * A * blockSizeElement elements in x direction (so M * A * blockSizeElement + 1 verts in x direction) 636 * so there are a total of N * B * blockSizeElement elements in y direction (so N * B * blockSizeElement + 1 verts in y direction) 637 * so there are a total of K * C * blockSizeElement elements in z direction (so K * C * blockSizeElement + 1 verts in z direction) 638 639 * there are ( M * A blockSizeElement ) * ( N * B * blockSizeElement) * (K * C * blockSizeElement ) hexas 640 * there are ( M * A * blockSizeElement + 1) * ( N * B * blockSizeElement + 1 ) * (K * C * blockSizeElement + 1) vertices 641 * x is the first dimension that varies 642 */ 643 644 /* generate the block at (a, b, c); it will represent a partition , it will get a partition tag */ 645 PetscInt dum_id=-1; 646 merr = mbImpl->tag_get_handle("GLOBAL_ID", 1, moab::MB_TYPE_INTEGER, global_id_tag);MBERR("Getting Tag handle failed", merr); 647 648 merr = mbImpl->tag_get_handle("PARALLEL_PARTITION", 1, moab::MB_TYPE_INTEGER, part_tag, moab::MB_TAG_CREAT|moab::MB_TAG_SPARSE, &dum_id);MBERR("Getting Tag handle failed", merr); 649 650 /* lets create some sets */ 651 merr = mbImpl->tag_get_handle(GEOM_DIMENSION_TAG_NAME, 1, moab::MB_TYPE_INTEGER, geom_tag, moab::MB_TAG_CREAT|moab::MB_TAG_SPARSE, &dum_id);MBERRNM(merr); 652 merr = mbImpl->create_meshset(moab::MESHSET_SET, regionset);MBERRNM(merr); 653 ierr = PetscLogEventEnd(genCtx.generateMesh,0,0,0,0);CHKERRQ(ierr); 654 655 for (a=0; a<(genCtx.dim>0?genCtx.A:genCtx.A); a++) { 656 for (b=0; b<(genCtx.dim>1?genCtx.B:1); b++) { 657 for (c=0; c<(genCtx.dim>2?genCtx.C:1); c++) { 658 659 moab::EntityHandle startv; 660 661 ierr = PetscLogEventBegin(genCtx.generateVertices,0,0,0,0);CHKERRQ(ierr); 662 ierr = DMMoab_GenerateVertices_Private(mbImpl, readMeshIface, genCtx, ml, nl, kl, a, b, c, global_id_tag, startv, verts);CHKERRQ(ierr); 663 ierr = PetscLogEventEnd(genCtx.generateVertices,0,0,0,0);CHKERRQ(ierr); 664 665 ierr = PetscLogEventBegin(genCtx.generateElements,0,0,0,0);CHKERRQ(ierr); 666 ierr = DMMoab_GenerateElements_Private(mbImpl, readMeshIface, genCtx, ml, nl, kl, a, b, c, global_id_tag, startv, cells);CHKERRQ(ierr); 667 ierr = PetscLogEventEnd(genCtx.generateElements,0,0,0,0);CHKERRQ(ierr); 668 669 PetscInt part_num=0; 670 switch(genCtx.dim) { 671 case 3: 672 part_num += (c+kl*genCtx.C)*(genCtx.M*genCtx.A * genCtx.N*genCtx.B); 673 case 2: 674 part_num += (b+nl*genCtx.B)*(genCtx.M*genCtx.A); 675 case 1: 676 part_num += (a+ml*genCtx.A); 677 break; 678 } 679 680 moab::EntityHandle part_set; 681 merr = mbImpl->create_meshset(moab::MESHSET_SET, part_set);MBERR("Can't create mesh set.", merr); 682 683 merr = mbImpl->add_entities(part_set, verts);MBERR("Can't add vertices to set.", merr); 684 merr = mbImpl->add_entities(part_set, cells);MBERR("Can't add entities to set.", merr); 685 // PetscInfo2(NULL, "Generated local mesh: %D vertices and %D elements.\n", verts.size(), cells.size()); 686 687 merr = mbImpl->add_entities(regionset, cells);MBERR("Can't add entities to set.", merr); 688 689 /* if needed, add all edges and faces */ 690 if (genCtx.adjEnts) 691 { 692 if (genCtx.dim > 1) { 693 merr = mbImpl->get_adjacencies(cells, 1, true, edges, moab::Interface::UNION);MBERR("Can't get edges", merr); 694 merr = mbImpl->add_entities(part_set, edges);MBERR("Can't add edges to partition set.", merr); 695 } 696 if (genCtx.dim > 2) { 697 merr = mbImpl->get_adjacencies(cells, 2, true, faces, moab::Interface::UNION);MBERR("Can't get faces", merr); 698 merr = mbImpl->add_entities(part_set, faces);MBERR("Can't add faces to partition set.", merr); 699 } 700 edges.clear(); 701 faces.clear(); 702 } 703 verts.clear(); cells.clear(); 704 705 merr = mbImpl->tag_set_data(part_tag, &part_set, 1, &part_num);MBERR("Can't set part tag on set", merr); 706 if (dmmoab->fileset) { 707 merr = mbImpl->add_parent_child(dmmoab->fileset, part_set);MBERR("Can't add part set to file set.", merr); 708 merr = mbImpl->unite_meshset(dmmoab->fileset, part_set);MBERRNM(merr); 709 } 710 merr = mbImpl->add_entities(dmmoab->fileset, &part_set, 1);MBERRNM(merr); 711 } 712 } 713 } 714 715 /* set geometric dimension tag for regions */ 716 merr = mbImpl->tag_set_data(geom_tag, ®ionset, 1, &dmmoab->dim);MBERRNM(merr); 717 merr = mbImpl->add_parent_child(dmmoab->fileset,regionset);MBERRNM(merr); 718 719 /* Only in parallel: resolve shared entities between processors and exchange ghost layers */ 720 if (global_size>1) { 721 722 ierr = PetscLogEventBegin(genCtx.parResolve,0,0,0,0);CHKERRQ(ierr); 723 724 merr = mbImpl->get_entities_by_dimension(dmmoab->fileset, genCtx.dim, cells);MBERR("Can't get all d-dimensional elements.", merr); 725 merr = mbImpl->get_entities_by_dimension(dmmoab->fileset, 0, verts);MBERR("Can't get all vertices.", merr); 726 727 if (genCtx.A*genCtx.B*genCtx.C!=1) { // merge needed 728 moab::MergeMesh mm(mbImpl); 729 if (genCtx.newMergeMethod) { 730 merr = mm.merge_using_integer_tag(verts, global_id_tag);MBERR("Can't merge with GLOBAL_ID tag", merr); 731 } 732 else { 733 merr = mm.merge_entities(cells, 0.0001);MBERR("Can't merge with coordinates", merr); 734 } 735 } 736 737 #ifdef MOAB_HAVE_MPI 738 /* check the handles */ 739 merr = pcomm->check_all_shared_handles();MBERRV(mbImpl,merr); 740 741 /* resolve the shared entities by exchanging information to adjacent processors */ 742 merr = pcomm->resolve_shared_ents(dmmoab->fileset,cells,dim,dim-1,NULL,&global_id_tag);MBERRV(mbImpl,merr); 743 if (dmmoab->fileset) { 744 merr = pcomm->exchange_ghost_cells(dim,0,nghost,dim,true,false,&dmmoab->fileset);MBERRV(mbImpl,merr); 745 } 746 else { 747 merr = pcomm->exchange_ghost_cells(dim,0,nghost,dim,true,false);MBERRV(mbImpl,merr); 748 } 749 750 /* Reassign global IDs on all entities. */ 751 merr = pcomm->assign_global_ids(dmmoab->fileset,dim,1,false,true,false);MBERRNM(merr); 752 #endif 753 754 ierr = PetscLogEventEnd(genCtx.parResolve,0,0,0,0);CHKERRQ(ierr); 755 } 756 757 if (!genCtx.keep_skins) { // default is to delete the 1- and 2-dimensional entities 758 // delete all quads and edges 759 moab::Range toDelete; 760 if (genCtx.dim > 1) { 761 merr = mbImpl->get_entities_by_dimension(dmmoab->fileset, 1, toDelete);MBERR("Can't get edges", merr); 762 } 763 764 if (genCtx.dim > 2) { 765 merr = mbImpl->get_entities_by_dimension(dmmoab->fileset, 2, toDelete);MBERR("Can't get faces", merr); 766 } 767 768 #ifdef MOAB_HAVE_MPI 769 merr = dmmoab->pcomm->delete_entities(toDelete) ;MBERR("Can't delete entities", merr); 770 #endif 771 } 772 PetscFunctionReturn(0); 773 } 774 775 776 #undef __FUNCT__ 777 #define __FUNCT__ "DMMoab_GetReadOptions_Private" 778 PetscErrorCode DMMoab_GetReadOptions_Private(PetscBool by_rank, PetscInt numproc, PetscInt dim, PetscInt nghost, MoabReadMode mode, PetscInt dbglevel, const char* dm_opts, const char* extra_opts, const char** read_opts) 779 { 780 char *ropts; 781 char ropts_par[PETSC_MAX_PATH_LEN],ropts_pargh[PETSC_MAX_PATH_LEN]; 782 char ropts_dbg[PETSC_MAX_PATH_LEN]; 783 PetscErrorCode ierr; 784 785 PetscFunctionBegin; 786 ierr = PetscMalloc1(PETSC_MAX_PATH_LEN,&ropts);CHKERRQ(ierr); 787 ierr = PetscMemzero(&ropts_par,PETSC_MAX_PATH_LEN);CHKERRQ(ierr); 788 ierr = PetscMemzero(&ropts_pargh,PETSC_MAX_PATH_LEN);CHKERRQ(ierr); 789 ierr = PetscMemzero(&ropts_dbg,PETSC_MAX_PATH_LEN);CHKERRQ(ierr); 790 791 /* do parallel read unless using only one processor */ 792 if (numproc > 1) { 793 // ierr = PetscSNPrintf(ropts_par, PETSC_MAX_PATH_LEN, "PARALLEL=%s;PARTITION=PARALLEL_PARTITION;PARTITION_DISTRIBUTE;PARALLEL_RESOLVE_SHARED_ENTS;PARALLEL_GHOSTS=%d.0.1%s;",MoabReadModes[mode],dim,(by_rank ? ";PARTITION_BY_RANK":""));CHKERRQ(ierr); 794 ierr = PetscSNPrintf(ropts_par, PETSC_MAX_PATH_LEN, "PARALLEL=%s;PARTITION=PARALLEL_PARTITION;PARTITION_DISTRIBUTE;PARALLEL_RESOLVE_SHARED_ENTS;%s",MoabReadModes[mode],(by_rank ? "PARTITION_BY_RANK;":""));CHKERRQ(ierr); 795 if (nghost) { 796 ierr = PetscSNPrintf(ropts_pargh, PETSC_MAX_PATH_LEN, "PARALLEL_GHOSTS=%d.0.%d;",dim,nghost);CHKERRQ(ierr); 797 } 798 } 799 800 if (dbglevel) { 801 if (numproc>1) { 802 ierr = PetscSNPrintf(ropts_dbg, PETSC_MAX_PATH_LEN, "CPUTIME;DEBUG_IO=%d;DEBUG_PIO=%d;",dbglevel,dbglevel);CHKERRQ(ierr); 803 } 804 else { 805 ierr = PetscSNPrintf(ropts_dbg, PETSC_MAX_PATH_LEN, "CPUTIME;DEBUG_IO=%d;",dbglevel);CHKERRQ(ierr); 806 } 807 } 808 809 ierr = PetscSNPrintf(ropts, PETSC_MAX_PATH_LEN, "%s%s%s%s%s",ropts_par,(nghost?ropts_pargh:""),ropts_dbg,(extra_opts?extra_opts:""),(dm_opts?dm_opts:""));CHKERRQ(ierr); 810 *read_opts = ropts; 811 PetscFunctionReturn(0); 812 } 813 814 815 /*@ 816 DMMoabLoadFromFile - Creates a DM object by loading the mesh from a user specified file. 817 818 Collective on MPI_Comm 819 820 Input Parameters: 821 + comm - The communicator for the DM object 822 . dim - The spatial dimension 823 . filename - The name of the mesh file to be loaded 824 . usrreadopts - The options string to read a MOAB mesh. 825 Reference (Parallel Mesh Initialization: http://www.mcs.anl.gov/~fathom/moab-docs/html/contents.html#fivetwo) 826 827 Output Parameter: 828 . dm - The DM object 829 830 Level: beginner 831 832 .keywords: DM, create 833 834 .seealso: DMSetType(), DMCreate(), DMMoabCreateBoxMesh() 835 @*/ 836 PetscErrorCode DMMoabLoadFromFile(MPI_Comm comm,PetscInt dim,PetscInt nghost,const char* filename,const char* usrreadopts,DM *dm) 837 { 838 moab::ErrorCode merr; 839 PetscInt nprocs; 840 DM_Moab *dmmoab; 841 moab::Interface *mbiface; 842 #ifdef MOAB_HAVE_MPI 843 moab::ParallelComm *pcomm; 844 #endif 845 moab::Range verts,elems; 846 const char *readopts; 847 PetscErrorCode ierr; 848 849 PetscFunctionBegin; 850 PetscValidPointer(dm,6); 851 852 /* Create the basic DMMoab object and keep the default parameters created by DM impls */ 853 ierr = DMMoabCreateMoab(comm, NULL, NULL, NULL, dm);CHKERRQ(ierr); 854 855 /* get all the necessary handles from the private DM object */ 856 dmmoab = (DM_Moab*)(*dm)->data; 857 mbiface = dmmoab->mbiface; 858 #ifdef MOAB_HAVE_MPI 859 pcomm = dmmoab->pcomm; 860 nprocs = pcomm->size(); 861 #else 862 nprocs = 1; 863 #endif 864 /* TODO: Decipher dimension based on the loaded mesh instead of getting from user */ 865 dmmoab->dim = dim; 866 dmmoab->nghostrings=nghost; 867 dmmoab->refct = 1; 868 869 /* create a file set to associate all entities in current mesh */ 870 merr = dmmoab->mbiface->create_meshset(moab::MESHSET_SET, dmmoab->fileset);MBERR("Creating file set failed", merr); 871 872 /* add mesh loading options specific to the DM */ 873 ierr = DMMoab_GetReadOptions_Private(dmmoab->partition_by_rank, nprocs, dim, nghost, dmmoab->read_mode, 874 dmmoab->rw_dbglevel, dmmoab->extra_read_options, usrreadopts, &readopts);CHKERRQ(ierr); 875 876 PetscInfo2(*dm, "Reading file %s with options: %s\n",filename,readopts); 877 878 /* Load the mesh from a file. */ 879 if (dmmoab->fileset) { 880 merr = mbiface->load_file(filename, &dmmoab->fileset, readopts);MBERRVM(mbiface,"Reading MOAB file failed.", merr); 881 } 882 else { 883 merr = mbiface->load_file(filename, 0, readopts);MBERRVM(mbiface,"Reading MOAB file failed.", merr); 884 } 885 886 #ifdef MOAB_HAVE_MPI 887 /* Reassign global IDs on all entities. */ 888 merr = pcomm->assign_global_ids(dmmoab->fileset,dim,1,true,true,true);MBERRNM(merr); 889 #endif 890 891 /* load the local vertices */ 892 merr = mbiface->get_entities_by_type(dmmoab->fileset, moab::MBVERTEX, verts, true);MBERRNM(merr); 893 /* load the local elements */ 894 merr = mbiface->get_entities_by_dimension(dmmoab->fileset, dim, elems, true);MBERRNM(merr); 895 896 #ifdef MOAB_HAVE_MPI 897 /* Everything is set up, now just do a tag exchange to update tags 898 on all of the ghost vertexes */ 899 merr = pcomm->exchange_tags(dmmoab->ltog_tag,verts);MBERRV(mbiface,merr); 900 merr = pcomm->exchange_tags(dmmoab->ltog_tag,elems);MBERRV(mbiface,merr); 901 merr = pcomm->collective_sync_partition();MBERR("Collective sync failed", merr); 902 #endif 903 904 PetscInfo3(*dm, "MOAB file '%s' was successfully loaded. Found %D vertices and %D elements.\n", filename, verts.size(), elems.size()); 905 ierr = PetscFree(readopts);CHKERRQ(ierr); 906 PetscFunctionReturn(0); 907 } 908 909 910 #undef __FUNCT__ 911 #define __FUNCT__ "DMMoabRenumberMeshEntities" 912 /*@ 913 DMMoabRenumberMeshEntities - Order and number all entities (vertices->elements) to be contiguously ordered 914 in parallel 915 916 Collective on MPI_Comm 917 918 Input Parameters: 919 + dm - The DM object 920 921 Level: advanced 922 923 .keywords: DM, reorder 924 925 .seealso: DMSetUp(), DMCreate() 926 @*/ 927 PetscErrorCode DMMoabRenumberMeshEntities(DM dm) 928 { 929 moab::Range verts; 930 931 PetscFunctionBegin; 932 PetscValidHeaderSpecific(dm,DM_CLASSID,1); 933 934 #ifdef MOAB_HAVE_MPI 935 /* Insert new points */ 936 moab::ErrorCode merr; 937 merr = ((DM_Moab*) dm->data)->pcomm->assign_global_ids(((DM_Moab*) dm->data)->fileset,3,0,false,true,false);MBERRNM(merr); 938 #endif 939 PetscFunctionReturn(0); 940 } 941 942