1 static char help[] = "This example demonstrates the use of DMNetwork interface for solving a nonlinear electric power grid problem.\n\ 2 The available solver options are in the poweroptions file and the data files are in the datafiles directory.\n\ 3 See 'Evaluation of overlapping restricted additive schwarz preconditioning for parallel solution \n\ 4 of very large power flow problems' https://dl.acm.org/citation.cfm?id=2536784).\n\ 5 The data file format used is from the MatPower package (http://www.pserc.cornell.edu//matpower/).\n\ 6 Run this program: mpiexec -n <n> ./pf\n\ 7 mpiexec -n <n> ./pfc \n"; 8 9 #include "power.h" 10 #include <petscdmnetwork.h> 11 12 PetscErrorCode FormFunction(SNES snes,Vec X, Vec F,void *appctx) 13 { 14 DM networkdm; 15 UserCtx_Power *User=(UserCtx_Power*)appctx; 16 Vec localX,localF; 17 PetscInt nv,ne; 18 const PetscInt *vtx,*edges; 19 20 PetscFunctionBegin; 21 PetscCall(SNESGetDM(snes,&networkdm)); 22 PetscCall(DMGetLocalVector(networkdm,&localX)); 23 PetscCall(DMGetLocalVector(networkdm,&localF)); 24 PetscCall(VecSet(F,0.0)); 25 PetscCall(VecSet(localF,0.0)); 26 27 PetscCall(DMGlobalToLocalBegin(networkdm,X,INSERT_VALUES,localX)); 28 PetscCall(DMGlobalToLocalEnd(networkdm,X,INSERT_VALUES,localX)); 29 30 PetscCall(DMNetworkGetSubnetwork(networkdm,0,&nv,&ne,&vtx,&edges)); 31 PetscCall(FormFunction_Power(networkdm,localX,localF,nv,ne,vtx,edges,User)); 32 33 PetscCall(DMRestoreLocalVector(networkdm,&localX)); 34 35 PetscCall(DMLocalToGlobalBegin(networkdm,localF,ADD_VALUES,F)); 36 PetscCall(DMLocalToGlobalEnd(networkdm,localF,ADD_VALUES,F)); 37 PetscCall(DMRestoreLocalVector(networkdm,&localF)); 38 PetscFunctionReturn(0); 39 } 40 41 PetscErrorCode SetInitialValues(DM networkdm,Vec X,void* appctx) 42 { 43 PetscInt vStart,vEnd,nv,ne; 44 const PetscInt *vtx,*edges; 45 Vec localX; 46 UserCtx_Power *user_power=(UserCtx_Power*)appctx; 47 48 PetscFunctionBegin; 49 PetscCall(DMNetworkGetVertexRange(networkdm,&vStart, &vEnd)); 50 51 PetscCall(DMGetLocalVector(networkdm,&localX)); 52 53 PetscCall(VecSet(X,0.0)); 54 PetscCall(DMGlobalToLocalBegin(networkdm,X,INSERT_VALUES,localX)); 55 PetscCall(DMGlobalToLocalEnd(networkdm,X,INSERT_VALUES,localX)); 56 57 PetscCall(DMNetworkGetSubnetwork(networkdm,0,&nv,&ne,&vtx,&edges)); 58 PetscCall(SetInitialGuess_Power(networkdm,localX,nv,ne,vtx,edges,user_power)); 59 60 PetscCall(DMLocalToGlobalBegin(networkdm,localX,ADD_VALUES,X)); 61 PetscCall(DMLocalToGlobalEnd(networkdm,localX,ADD_VALUES,X)); 62 PetscCall(DMRestoreLocalVector(networkdm,&localX)); 63 PetscFunctionReturn(0); 64 } 65 66 int main(int argc,char ** argv) 67 { 68 char pfdata_file[PETSC_MAX_PATH_LEN]="case9.m"; 69 PFDATA *pfdata; 70 PetscInt numEdges=0; 71 PetscInt *edges = NULL; 72 PetscInt i; 73 DM networkdm; 74 UserCtx_Power User; 75 #if defined(PETSC_USE_LOG) 76 PetscLogStage stage1,stage2; 77 #endif 78 PetscMPIInt rank; 79 PetscInt eStart, eEnd, vStart, vEnd,j; 80 PetscInt genj,loadj; 81 Vec X,F; 82 Mat J; 83 SNES snes; 84 85 PetscFunctionBeginUser; 86 PetscCall(PetscInitialize(&argc,&argv,"poweroptions",help)); 87 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 88 { 89 /* introduce the const crank so the clang static analyzer realizes that if it enters any of the if (crank) then it must have entered the first */ 90 /* this is an experiment to see how the analyzer reacts */ 91 const PetscMPIInt crank = rank; 92 93 /* Create an empty network object */ 94 PetscCall(DMNetworkCreate(PETSC_COMM_WORLD,&networkdm)); 95 /* Register the components in the network */ 96 PetscCall(DMNetworkRegisterComponent(networkdm,"branchstruct",sizeof(struct _p_EDGE_Power),&User.compkey_branch)); 97 PetscCall(DMNetworkRegisterComponent(networkdm,"busstruct",sizeof(struct _p_VERTEX_Power),&User.compkey_bus)); 98 PetscCall(DMNetworkRegisterComponent(networkdm,"genstruct",sizeof(struct _p_GEN),&User.compkey_gen)); 99 PetscCall(DMNetworkRegisterComponent(networkdm,"loadstruct",sizeof(struct _p_LOAD),&User.compkey_load)); 100 101 PetscCall(PetscLogStageRegister("Read Data",&stage1)); 102 PetscLogStagePush(stage1); 103 /* READ THE DATA */ 104 if (!crank) { 105 /* READ DATA */ 106 /* Only rank 0 reads the data */ 107 PetscCall(PetscOptionsGetString(NULL,NULL,"-pfdata",pfdata_file,sizeof(pfdata_file),NULL)); 108 PetscCall(PetscNew(&pfdata)); 109 PetscCall(PFReadMatPowerData(pfdata,pfdata_file)); 110 User.Sbase = pfdata->sbase; 111 112 numEdges = pfdata->nbranch; 113 PetscCall(PetscMalloc1(2*numEdges,&edges)); 114 PetscCall(GetListofEdges_Power(pfdata,edges)); 115 } 116 117 /* If external option activated. Introduce error in jacobian */ 118 PetscCall(PetscOptionsHasName(NULL,NULL, "-jac_error", &User.jac_error)); 119 120 PetscLogStagePop(); 121 PetscCallMPI(MPI_Barrier(PETSC_COMM_WORLD)); 122 PetscCall(PetscLogStageRegister("Create network",&stage2)); 123 PetscLogStagePush(stage2); 124 /* Set number of nodes/edges */ 125 PetscCall(DMNetworkSetNumSubNetworks(networkdm,PETSC_DECIDE,1)); 126 PetscCall(DMNetworkAddSubnetwork(networkdm,"",numEdges,edges,NULL)); 127 128 /* Set up the network layout */ 129 PetscCall(DMNetworkLayoutSetUp(networkdm)); 130 131 if (!crank) { 132 PetscCall(PetscFree(edges)); 133 } 134 135 /* Add network components only process 0 has any data to add */ 136 if (!crank) { 137 genj=0; loadj=0; 138 PetscCall(DMNetworkGetEdgeRange(networkdm,&eStart,&eEnd)); 139 for (i = eStart; i < eEnd; i++) { 140 PetscCall(DMNetworkAddComponent(networkdm,i,User.compkey_branch,&pfdata->branch[i-eStart],0)); 141 } 142 PetscCall(DMNetworkGetVertexRange(networkdm,&vStart,&vEnd)); 143 for (i = vStart; i < vEnd; i++) { 144 PetscCall(DMNetworkAddComponent(networkdm,i,User.compkey_bus,&pfdata->bus[i-vStart],2)); 145 if (pfdata->bus[i-vStart].ngen) { 146 for (j = 0; j < pfdata->bus[i-vStart].ngen; j++) { 147 PetscCall(DMNetworkAddComponent(networkdm,i,User.compkey_gen,&pfdata->gen[genj++],0)); 148 } 149 } 150 if (pfdata->bus[i-vStart].nload) { 151 for (j=0; j < pfdata->bus[i-vStart].nload; j++) { 152 PetscCall(DMNetworkAddComponent(networkdm,i,User.compkey_load,&pfdata->load[loadj++],0)); 153 } 154 } 155 } 156 } 157 158 /* Set up DM for use */ 159 PetscCall(DMSetUp(networkdm)); 160 161 if (!crank) { 162 PetscCall(PetscFree(pfdata->bus)); 163 PetscCall(PetscFree(pfdata->gen)); 164 PetscCall(PetscFree(pfdata->branch)); 165 PetscCall(PetscFree(pfdata->load)); 166 PetscCall(PetscFree(pfdata)); 167 } 168 169 /* Distribute networkdm to multiple processes */ 170 PetscCall(DMNetworkDistribute(&networkdm,0)); 171 172 PetscLogStagePop(); 173 PetscCall(DMNetworkGetEdgeRange(networkdm,&eStart,&eEnd)); 174 PetscCall(DMNetworkGetVertexRange(networkdm,&vStart,&vEnd)); 175 176 #if 0 177 EDGE_Power edge; 178 PetscInt key,kk,numComponents; 179 VERTEX_Power bus; 180 GEN gen; 181 LOAD load; 182 183 for (i = eStart; i < eEnd; i++) { 184 PetscCall(DMNetworkGetComponent(networkdm,i,0,&key,(void**)&edge)); 185 PetscCall(DMNetworkGetNumComponents(networkdm,i,&numComponents)); 186 PetscCall(PetscPrintf(PETSC_COMM_SELF,"Rank %d ncomps = %d Line %d ---- %d\n",crank,numComponents,edge->internal_i,edge->internal_j)); 187 } 188 189 for (i = vStart; i < vEnd; i++) { 190 PetscCall(DMNetworkGetNumComponents(networkdm,i,&numComponents)); 191 for (kk=0; kk < numComponents; kk++) { 192 PetscCall(DMNetworkGetComponent(networkdm,i,kk,&key,&component)); 193 if (key == 1) { 194 bus = (VERTEX_Power)(component); 195 PetscCall(PetscPrintf(PETSC_COMM_SELF,"Rank %d ncomps = %d Bus %d\n",crank,numComponents,bus->internal_i)); 196 } else if (key == 2) { 197 gen = (GEN)(component); 198 PetscCall(PetscPrintf(PETSC_COMM_SELF,"Rank %d Gen pg = %f qg = %f\n",crank,(double)gen->pg,(double)gen->qg)); 199 } else if (key == 3) { 200 load = (LOAD)(component); 201 PetscCall(PetscPrintf(PETSC_COMM_SELF,"Rank %d Load pl = %f ql = %f\n",crank,(double)load->pl,(double)load->ql)); 202 } 203 } 204 } 205 #endif 206 /* Broadcast Sbase to all processors */ 207 PetscCallMPI(MPI_Bcast(&User.Sbase,1,MPIU_SCALAR,0,PETSC_COMM_WORLD)); 208 209 PetscCall(DMCreateGlobalVector(networkdm,&X)); 210 PetscCall(VecDuplicate(X,&F)); 211 212 PetscCall(DMCreateMatrix(networkdm,&J)); 213 PetscCall(MatSetOption(J,MAT_NEW_NONZERO_ALLOCATION_ERR,PETSC_FALSE)); 214 215 PetscCall(SetInitialValues(networkdm,X,&User)); 216 217 /* HOOK UP SOLVER */ 218 PetscCall(SNESCreate(PETSC_COMM_WORLD,&snes)); 219 PetscCall(SNESSetDM(snes,networkdm)); 220 PetscCall(SNESSetFunction(snes,F,FormFunction,&User)); 221 PetscCall(SNESSetJacobian(snes,J,J,FormJacobian_Power,&User)); 222 PetscCall(SNESSetFromOptions(snes)); 223 224 PetscCall(SNESSolve(snes,NULL,X)); 225 /* PetscCall(VecView(X,PETSC_VIEWER_STDOUT_WORLD)); */ 226 227 PetscCall(VecDestroy(&X)); 228 PetscCall(VecDestroy(&F)); 229 PetscCall(MatDestroy(&J)); 230 231 PetscCall(SNESDestroy(&snes)); 232 PetscCall(DMDestroy(&networkdm)); 233 } 234 PetscCall(PetscFinalize()); 235 return 0; 236 } 237 238 /*TEST 239 240 build: 241 depends: PFReadData.c pffunctions.c 242 requires: !complex double defined(PETSC_HAVE_ATTRIBUTEALIGNED) 243 244 test: 245 args: -snes_rtol 1.e-3 246 localrunfiles: poweroptions case9.m 247 output_file: output/power_1.out 248 249 test: 250 suffix: 2 251 args: -snes_rtol 1.e-3 -petscpartitioner_type simple 252 nsize: 4 253 localrunfiles: poweroptions case9.m 254 output_file: output/power_1.out 255 256 TEST*/ 257