1 #define PETSCDM_DLL 2 #include <petsc/private/dmnetworkimpl.h> /*I "petscdmnetwork.h" I*/ 3 #include <petsc/private/vecimpl.h> 4 5 PetscErrorCode DMSetFromOptions_Network(PetscOptionItems *PetscOptionsObject,DM dm) 6 { 7 PetscFunctionBegin; 8 PetscValidHeaderSpecific(dm, DM_CLASSID, 2); 9 PetscOptionsHeadBegin(PetscOptionsObject,"DMNetwork Options"); 10 PetscOptionsHeadEnd(); 11 PetscFunctionReturn(0); 12 } 13 14 /* External function declarations here */ 15 extern PetscErrorCode DMCreateMatrix_Network(DM, Mat*); 16 extern PetscErrorCode DMDestroy_Network(DM); 17 extern PetscErrorCode DMView_Network(DM, PetscViewer); 18 extern PetscErrorCode DMGlobalToLocalBegin_Network(DM, Vec, InsertMode, Vec); 19 extern PetscErrorCode DMGlobalToLocalEnd_Network(DM, Vec, InsertMode, Vec); 20 extern PetscErrorCode DMLocalToGlobalBegin_Network(DM, Vec, InsertMode, Vec); 21 extern PetscErrorCode DMLocalToGlobalEnd_Network(DM, Vec, InsertMode, Vec); 22 extern PetscErrorCode DMSetUp_Network(DM); 23 extern PetscErrorCode DMClone_Network(DM, DM*); 24 25 static PetscErrorCode VecArrayPrint_private(PetscViewer viewer,PetscInt n,const PetscScalar *xv) 26 { 27 PetscInt i; 28 29 PetscFunctionBegin; 30 for (i=0; i<n; i++) { 31 #if defined(PETSC_USE_COMPLEX) 32 if (PetscImaginaryPart(xv[i]) > 0.0) { 33 PetscCall(PetscViewerASCIIPrintf(viewer," %g + %g i\n",(double)PetscRealPart(xv[i]),(double)PetscImaginaryPart(xv[i]))); 34 } else if (PetscImaginaryPart(xv[i]) < 0.0) { 35 PetscCall(PetscViewerASCIIPrintf(viewer," %g - %g i\n",(double)PetscRealPart(xv[i]),-(double)PetscImaginaryPart(xv[i]))); 36 } else PetscCall(PetscViewerASCIIPrintf(viewer," %g\n",(double)PetscRealPart(xv[i]))); 37 #else 38 PetscCall(PetscViewerASCIIPrintf(viewer," %g\n",(double)xv[i])); 39 #endif 40 } 41 PetscFunctionReturn(0); 42 } 43 44 static PetscErrorCode VecView_Network_Seq(DM networkdm,Vec X,PetscViewer viewer) 45 { 46 PetscInt e,v,Start,End,offset,nvar,id; 47 const PetscScalar *xv; 48 49 PetscFunctionBegin; 50 PetscCall(VecGetArrayRead(X,&xv)); 51 52 /* iterate over edges */ 53 PetscCall(DMNetworkGetEdgeRange(networkdm,&Start,&End)); 54 for (e=Start; e<End; e++) { 55 PetscCall(DMNetworkGetComponent(networkdm,e,ALL_COMPONENTS,NULL,NULL,&nvar)); 56 if (!nvar) continue; 57 58 PetscCall(DMNetworkGetLocalVecOffset(networkdm,e,ALL_COMPONENTS,&offset)); 59 PetscCall(DMNetworkGetGlobalEdgeIndex(networkdm,e,&id)); 60 61 PetscCall(PetscViewerASCIIPrintf(viewer," Edge %" PetscInt_FMT ":\n",id)); 62 PetscCall(VecArrayPrint_private(viewer,nvar,xv+offset)); 63 } 64 65 /* iterate over vertices */ 66 PetscCall(DMNetworkGetVertexRange(networkdm,&Start,&End)); 67 for (v=Start; v<End; v++) { 68 PetscCall(DMNetworkGetComponent(networkdm,v,ALL_COMPONENTS,NULL,NULL,&nvar)); 69 if (!nvar) continue; 70 71 PetscCall(DMNetworkGetLocalVecOffset(networkdm,v,ALL_COMPONENTS,&offset)); 72 PetscCall(DMNetworkGetGlobalVertexIndex(networkdm,v,&id)); 73 74 PetscCall(PetscViewerASCIIPrintf(viewer," Vertex %" PetscInt_FMT ":\n",id)); 75 PetscCall(VecArrayPrint_private(viewer,nvar,xv+offset)); 76 } 77 PetscCall(PetscViewerFlush(viewer)); 78 PetscCall(VecRestoreArrayRead(X,&xv)); 79 PetscFunctionReturn(0); 80 } 81 82 static PetscErrorCode VecView_Network_MPI(DM networkdm,Vec X,PetscViewer viewer) 83 { 84 PetscInt i,e,v,eStart,eEnd,vStart,vEnd,offset,nvar,len_loc,len,k; 85 const PetscScalar *xv; 86 MPI_Comm comm; 87 PetscMPIInt size,rank,tag = ((PetscObject)viewer)->tag; 88 Vec localX; 89 PetscBool ghostvtex; 90 PetscScalar *values; 91 PetscInt j,ne,nv,id; 92 MPI_Status status; 93 94 PetscFunctionBegin; 95 PetscCall(PetscObjectGetComm((PetscObject)networkdm,&comm)); 96 PetscCallMPI(MPI_Comm_size(comm,&size)); 97 PetscCallMPI(MPI_Comm_rank(comm,&rank)); 98 99 PetscCall(DMGetLocalVector(networkdm,&localX)); 100 PetscCall(DMGlobalToLocalBegin(networkdm,X,INSERT_VALUES,localX)); 101 PetscCall(DMGlobalToLocalEnd(networkdm,X,INSERT_VALUES,localX)); 102 PetscCall(VecGetArrayRead(localX,&xv)); 103 104 PetscCall(VecGetLocalSize(localX,&len_loc)); 105 106 PetscCall(DMNetworkGetEdgeRange(networkdm,&eStart,&eEnd)); 107 PetscCall(DMNetworkGetVertexRange(networkdm,&vStart,&vEnd)); 108 len_loc += 2*(1 + eEnd-eStart + vEnd-vStart); 109 110 /* values = [nedges, nvertices; id, nvar, xedge; ...; id, nvars, xvertex;...], to be sent to proc[0] */ 111 PetscCallMPI(MPI_Allreduce(&len_loc,&len,1,MPIU_INT,MPI_MAX,comm)); 112 PetscCall(PetscCalloc1(len,&values)); 113 114 if (rank == 0) { 115 PetscCall(PetscViewerASCIIPrintf(viewer,"Process [%d]\n",rank)); 116 } 117 118 /* iterate over edges */ 119 k = 2; 120 for (e=eStart; e<eEnd; e++) { 121 PetscCall(DMNetworkGetComponent(networkdm,e,ALL_COMPONENTS,NULL,NULL,&nvar)); 122 if (!nvar) continue; 123 124 PetscCall(DMNetworkGetLocalVecOffset(networkdm,e,ALL_COMPONENTS,&offset)); 125 PetscCall(DMNetworkGetGlobalEdgeIndex(networkdm,e,&id)); 126 127 if (rank == 0) { /* print its own entries */ 128 PetscCall(PetscViewerASCIIPrintf(viewer," Edge %" PetscInt_FMT ":\n",id)); 129 PetscCall(VecArrayPrint_private(viewer,nvar,xv+offset)); 130 } else { 131 values[0] += 1; /* number of edges */ 132 values[k++] = id; 133 values[k++] = nvar; 134 for (i=offset; i< offset+nvar; i++) values[k++] = xv[i]; 135 } 136 } 137 138 /* iterate over vertices */ 139 for (v=vStart; v<vEnd; v++) { 140 PetscCall(DMNetworkIsGhostVertex(networkdm,v,&ghostvtex)); 141 if (ghostvtex) continue; 142 PetscCall(DMNetworkGetComponent(networkdm,v,ALL_COMPONENTS,NULL,NULL,&nvar)); 143 if (!nvar) continue; 144 145 PetscCall(DMNetworkGetLocalVecOffset(networkdm,v,ALL_COMPONENTS,&offset)); 146 PetscCall(DMNetworkGetGlobalVertexIndex(networkdm,v,&id)); 147 148 if (rank == 0) { 149 PetscCall(PetscViewerASCIIPrintf(viewer," Vertex %" PetscInt_FMT ":\n",id)); 150 PetscCall(VecArrayPrint_private(viewer,nvar,xv+offset)); 151 } else { 152 values[1] += 1; /* number of vertices */ 153 values[k++] = id; 154 values[k++] = nvar; 155 for (i=offset; i< offset+nvar; i++) values[k++] = xv[i]; 156 } 157 } 158 159 if (rank == 0) { 160 /* proc[0] receives and prints messages */ 161 for (j=1; j<size; j++) { 162 PetscCall(PetscViewerASCIIPrintf(viewer,"Process [%" PetscInt_FMT "]\n",j)); 163 164 PetscCallMPI(MPI_Recv(values,(PetscMPIInt)len,MPIU_SCALAR,j,tag,comm,&status)); 165 166 ne = (PetscInt)PetscAbsScalar(values[0]); 167 nv = (PetscInt)PetscAbsScalar(values[1]); 168 169 /* print received edges */ 170 k = 2; 171 for (i=0; i<ne; i++) { 172 id = (PetscInt)PetscAbsScalar(values[k++]); 173 nvar = (PetscInt)PetscAbsScalar(values[k++]); 174 PetscCall(PetscViewerASCIIPrintf(viewer," Edge %" PetscInt_FMT ":\n",id)); 175 PetscCall(VecArrayPrint_private(viewer,nvar,values+k)); 176 k += nvar; 177 } 178 179 /* print received vertices */ 180 for (i=0; i<nv; i++) { 181 id = (PetscInt)PetscAbsScalar(values[k++]); 182 nvar = (PetscInt)PetscAbsScalar(values[k++]); 183 PetscCall(PetscViewerASCIIPrintf(viewer," Vertex %" PetscInt_FMT ":\n",id)); 184 PetscCall(VecArrayPrint_private(viewer,nvar,values+k)); 185 k += nvar; 186 } 187 } 188 } else { 189 /* sends values to proc[0] */ 190 PetscCallMPI(MPI_Send((void*)values,k,MPIU_SCALAR,0,tag,comm)); 191 } 192 193 PetscCall(PetscFree(values)); 194 PetscCall(VecRestoreArrayRead(localX,&xv)); 195 PetscCall(DMRestoreLocalVector(networkdm,&localX)); 196 PetscFunctionReturn(0); 197 } 198 199 PETSC_EXTERN PetscErrorCode VecView_MPI(Vec,PetscViewer); 200 201 PetscErrorCode VecView_Network(Vec v,PetscViewer viewer) 202 { 203 DM dm; 204 PetscBool isseq; 205 PetscBool iascii; 206 207 PetscFunctionBegin; 208 PetscCall(VecGetDM(v,&dm)); 209 PetscCheck(dm,PetscObjectComm((PetscObject)v),PETSC_ERR_ARG_WRONG,"Vector not generated from a DM"); 210 PetscCall(PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii)); 211 PetscCall(PetscObjectTypeCompare((PetscObject)v,VECSEQ,&isseq)); 212 213 /* Use VecView_Network if the viewer is ASCII; use VecView_Seq/MPI for other viewer formats */ 214 if (iascii) { 215 if (isseq) PetscCall(VecView_Network_Seq(dm,v,viewer)); 216 else PetscCall(VecView_Network_MPI(dm,v,viewer)); 217 } else { 218 if (isseq) PetscCall(VecView_Seq(v,viewer)); 219 else PetscCall(VecView_MPI(v,viewer)); 220 } 221 PetscFunctionReturn(0); 222 } 223 224 static PetscErrorCode DMCreateGlobalVector_Network(DM dm,Vec *vec) 225 { 226 DM_Network *network = (DM_Network*) dm->data; 227 228 PetscFunctionBegin; 229 PetscCall(DMCreateGlobalVector(network->plex,vec)); 230 PetscCall(VecSetOperation(*vec, VECOP_VIEW, (void (*)(void)) VecView_Network)); 231 PetscCall(VecSetDM(*vec,dm)); 232 PetscFunctionReturn(0); 233 } 234 235 static PetscErrorCode DMCreateLocalVector_Network(DM dm,Vec *vec) 236 { 237 DM_Network *network = (DM_Network*) dm->data; 238 239 PetscFunctionBegin; 240 PetscCall(DMCreateLocalVector(network->plex,vec)); 241 PetscCall(VecSetDM(*vec,dm)); 242 PetscFunctionReturn(0); 243 } 244 245 PetscErrorCode DMInitialize_Network(DM dm) 246 { 247 PetscFunctionBegin; 248 PetscCall(DMSetDimension(dm,1)); 249 dm->ops->view = DMView_Network; 250 dm->ops->setfromoptions = DMSetFromOptions_Network; 251 dm->ops->clone = DMClone_Network; 252 dm->ops->setup = DMSetUp_Network; 253 dm->ops->createglobalvector = DMCreateGlobalVector_Network; 254 dm->ops->createlocalvector = DMCreateLocalVector_Network; 255 dm->ops->getlocaltoglobalmapping = NULL; 256 dm->ops->createfieldis = NULL; 257 dm->ops->createcoordinatedm = NULL; 258 dm->ops->getcoloring = NULL; 259 dm->ops->creatematrix = DMCreateMatrix_Network; 260 dm->ops->createinterpolation = NULL; 261 dm->ops->createinjection = NULL; 262 dm->ops->refine = NULL; 263 dm->ops->coarsen = NULL; 264 dm->ops->refinehierarchy = NULL; 265 dm->ops->coarsenhierarchy = NULL; 266 dm->ops->globaltolocalbegin = DMGlobalToLocalBegin_Network; 267 dm->ops->globaltolocalend = DMGlobalToLocalEnd_Network; 268 dm->ops->localtoglobalbegin = DMLocalToGlobalBegin_Network; 269 dm->ops->localtoglobalend = DMLocalToGlobalEnd_Network; 270 dm->ops->destroy = DMDestroy_Network; 271 dm->ops->createsubdm = NULL; 272 dm->ops->locatepoints = NULL; 273 PetscFunctionReturn(0); 274 } 275 276 PetscErrorCode DMClone_Network(DM dm, DM *newdm) 277 { 278 DM_Network *network = (DM_Network *) dm->data; 279 280 PetscFunctionBegin; 281 network->refct++; 282 (*newdm)->data = network; 283 PetscCall(PetscObjectChangeTypeName((PetscObject) *newdm, DMNETWORK)); 284 PetscCall(DMInitialize_Network(*newdm)); 285 PetscFunctionReturn(0); 286 } 287 288 /*MC 289 DMNETWORK = "network" - A DM object that encapsulates an unstructured network. The implementation is based on the DM object 290 DMPlex that manages unstructured grids. Distributed networks use a non-overlapping partitioning of 291 the edges. In the local representation, Vecs contain all unknowns in the interior and shared boundary. 292 This is specified by a PetscSection object. Ownership in the global representation is determined by 293 ownership of the underlying DMPlex points. This is specified by another PetscSection object. 294 295 Level: intermediate 296 297 .seealso: `DMType`, `DMNetworkCreate()`, `DMCreate()`, `DMSetType()` 298 M*/ 299 300 PETSC_EXTERN PetscErrorCode DMCreate_Network(DM dm) 301 { 302 DM_Network *network; 303 304 PetscFunctionBegin; 305 PetscValidHeaderSpecific(dm, DM_CLASSID, 1); 306 PetscCall(PetscNewLog(dm,&network)); 307 dm->data = network; 308 309 network->refct = 1; 310 network->NVertices = 0; 311 network->NEdges = 0; 312 network->nVertices = 0; 313 network->nEdges = 0; 314 network->nsubnet = 0; 315 316 network->max_comps_registered = 20; 317 network->component = NULL; 318 network->header = NULL; 319 network->cvalue = NULL; 320 321 PetscCall(DMInitialize_Network(dm)); 322 PetscFunctionReturn(0); 323 } 324 325 /*@ 326 DMNetworkCreate - Creates a DMNetwork object, which encapsulates an unstructured network. 327 328 Collective 329 330 Input Parameter: 331 . comm - The communicator for the DMNetwork object 332 333 Output Parameter: 334 . network - The DMNetwork object 335 336 Level: beginner 337 338 @*/ 339 PetscErrorCode DMNetworkCreate(MPI_Comm comm, DM *network) 340 { 341 PetscFunctionBegin; 342 PetscValidPointer(network,2); 343 PetscCall(DMCreate(comm, network)); 344 PetscCall(DMSetType(*network, DMNETWORK)); 345 PetscFunctionReturn(0); 346 } 347