1 static char help[] = "Landau collision operator with anisotropic thermalization verification test as per Hager et al.\n 'A fully non-linear multi-species Fokker-Planck-Landau collision operator for simulation of fusion plasma', and " 2 "published as 'A performance portable, fully implicit Landau collision operator with batched linear solvers' https://arxiv.org/abs/2209.03228\n\n"; 3 4 #include <petscts.h> 5 #include <petsclandau.h> 6 #include <petscdmcomposite.h> 7 #include <petscds.h> 8 9 /* 10 call back method for DMPlexLandauAccess: 11 12 Input Parameters: 13 . dm - a DM for this field 14 - local_field - the local index in the grid for this field 15 . grid - the grid index 16 + b_id - the batch index 17 - vctx - a user context 18 19 Input/Output Parameter: 20 . x - Vector to data to 21 22 */ 23 PetscErrorCode landau_field_print_access_callback(DM dm, Vec x, PetscInt local_field, PetscInt grid, PetscInt b_id, void *vctx) 24 { 25 LandauCtx *ctx; 26 PetscScalar val; 27 PetscInt species; 28 29 PetscFunctionBegin; 30 PetscCall(DMGetApplicationContext(dm, &ctx)); 31 species = ctx->species_offset[grid] + local_field; 32 val = (PetscScalar)(LAND_PACK_IDX(b_id, grid) + (species + 1) * 10); 33 PetscCall(VecSet(x, val)); 34 PetscCall(PetscInfo(dm, "DMPlexLandauAccess user 'add' method to grid %" PetscInt_FMT ", batch %" PetscInt_FMT " and local field %" PetscInt_FMT " with %" PetscInt_FMT " grids\n", grid, b_id, local_field, ctx->num_grids)); 35 PetscFunctionReturn(PETSC_SUCCESS); 36 } 37 38 static const PetscReal alphai = 1 / 1.3; 39 static const PetscReal kev_joul = 6.241506479963235e+15; /* 1/1000e */ 40 41 // constants: [index of (anisotropic) direction of source, z x[1] shift 42 /* < v, n_s v_|| > */ 43 static void f0_vz(PetscInt dim, PetscInt Nf, PetscInt NfAux, const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[], const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[], PetscReal t, const PetscReal x[], PetscInt numConstants, const PetscScalar constants[], PetscScalar *f0) 44 { 45 if (dim == 2) f0[0] = u[0] * (2. * PETSC_PI * x[0]) * x[1]; /* n r v_|| */ 46 else f0[0] = u[0] * x[2]; 47 } 48 /* < v, n (v-shift)^2 > */ 49 static void f0_v2_par_shift(PetscInt dim, PetscInt Nf, PetscInt NfAux, const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[], const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[], PetscReal t, const PetscReal x[], PetscInt numConstants, const PetscScalar constants[], PetscScalar *f0) 50 { 51 PetscReal vz = PetscRealPart(constants[0]); 52 if (dim == 2) *f0 = u[0] * (2. * PETSC_PI * x[0]) * (x[1] - vz) * (x[1] - vz); /* n r v^2_par|perp */ 53 else *f0 = u[0] * (x[2] - vz) * (x[2] - vz); 54 } 55 static void f0_v2_perp(PetscInt dim, PetscInt Nf, PetscInt NfAux, const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[], const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[], PetscReal t, const PetscReal x[], PetscInt numConstants, const PetscScalar constants[], PetscScalar *f0) 56 { 57 if (dim == 2) *f0 = u[0] * (2. * PETSC_PI * x[0]) * x[0] * x[0]; /* n r v^2_perp */ 58 else *f0 = u[0] * (x[0] * x[0] + x[1] * x[1]); 59 } 60 /* < v, n_e > */ 61 static void f0_n(PetscInt dim, PetscInt Nf, PetscInt NfAux, const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[], const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[], PetscReal t, const PetscReal x[], PetscInt numConstants, const PetscScalar constants[], PetscScalar *f0) 62 { 63 if (dim == 2) f0[0] = 2. * PETSC_PI * x[0] * u[0]; 64 else f0[0] = u[0]; 65 } 66 static void f0_v2_shift(PetscInt dim, PetscInt Nf, PetscInt NfAux, const PetscInt uOff[], const PetscInt uOff_x[], const PetscScalar u[], const PetscScalar u_t[], const PetscScalar u_x[], const PetscInt aOff[], const PetscInt aOff_x[], const PetscScalar a[], const PetscScalar a_t[], const PetscScalar a_x[], PetscReal t, const PetscReal x[], PetscInt numConstants, const PetscScalar constants[], PetscScalar *f0) 67 { 68 PetscReal vz = PetscRealPart(constants[0]); 69 if (dim == 2) f0[0] = u[0] * (2. * PETSC_PI * x[0]) * (x[0] * x[0] + (x[1] - vz) * (x[1] - vz)); 70 else f0[0] = u[0] * (x[0] * x[0] + x[1] * x[1] + (x[2] - vz) * (x[2] - vz)); 71 } 72 /* Define a Maxwellian function for testing out the operator. */ 73 typedef struct { 74 PetscReal v_0; 75 PetscReal kT_m; 76 PetscReal n; 77 PetscReal shift; 78 PetscInt species; 79 } MaxwellianCtx; 80 81 static PetscErrorCode maxwellian(PetscInt dim, PetscReal time, const PetscReal x[], PetscInt Nf_dummy, PetscScalar *u, void *actx) 82 { 83 MaxwellianCtx *mctx = (MaxwellianCtx *)actx; 84 PetscReal theta = 2 * mctx->kT_m / (mctx->v_0 * mctx->v_0); /* theta = 2kT/mc^2 */ 85 86 PetscFunctionBegin; 87 /* evaluate the shifted Maxwellian */ 88 if (dim == 2) u[0] += alphai * mctx->n * PetscPowReal(PETSC_PI * theta, -1.5) * PetscExpReal(-(alphai * x[0] * x[0] + (x[1] - mctx->shift) * (x[1] - mctx->shift)) / theta); 89 else u[0] += alphai * mctx->n * PetscPowReal(PETSC_PI * theta, -1.5) * PetscExpReal(-(alphai * (x[0] * x[0] + x[1] * x[1]) + (x[2] - mctx->shift) * (x[2] - mctx->shift)) / theta); 90 PetscFunctionReturn(PETSC_SUCCESS); 91 } 92 93 static PetscErrorCode SetMaxwellians(DM dm, Vec X, PetscReal time, PetscReal temps[], PetscReal ns[], PetscInt grid, PetscReal shifts[], LandauCtx *ctx) 94 { 95 PetscErrorCode (*initu[LANDAU_MAX_SPECIES])(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar[], void *); 96 MaxwellianCtx *mctxs[LANDAU_MAX_SPECIES], data[LANDAU_MAX_SPECIES]; 97 98 PetscFunctionBegin; 99 if (!ctx) PetscCall(DMGetApplicationContext(dm, &ctx)); 100 for (PetscInt ii = ctx->species_offset[grid], i0 = 0; ii < ctx->species_offset[grid + 1]; ii++, i0++) { 101 mctxs[i0] = &data[i0]; 102 data[i0].v_0 = ctx->v_0; // v_0 same for all grids 103 data[i0].kT_m = ctx->k * temps[ii] / ctx->masses[ii]; /* kT/m = v_th ^ 2*/ 104 data[i0].n = ns[ii]; 105 initu[i0] = maxwellian; 106 data[i0].shift = 0; 107 data[i0].species = ii; 108 } 109 if (1) { 110 data[0].shift = (PetscReal)-PetscSign(ctx->charges[ctx->species_offset[grid]]) * ctx->electronShift * ctx->m_0 / ctx->masses[ctx->species_offset[grid]]; 111 } else { 112 shifts[0] = 0.5 * PetscSqrtReal(ctx->masses[0] / ctx->masses[1]); 113 shifts[1] = 50 * (ctx->masses[0] / ctx->masses[1]); 114 data[0].shift = ctx->electronShift * shifts[grid] * PetscSqrtReal(data[0].kT_m) / ctx->v_0; // shifts to not matter!!!! 115 } 116 PetscCall(DMProjectFunction(dm, time, initu, (void **)mctxs, INSERT_ALL_VALUES, X)); 117 PetscFunctionReturn(PETSC_SUCCESS); 118 } 119 120 typedef enum { 121 E_PAR_IDX, 122 E_PERP_IDX, 123 I_PAR_IDX, 124 I_PERP_IDX, 125 NUM_TEMPS 126 } TemperatureIDX; 127 128 /* -------------------- Evaluate NRL Function F(x) (analytical solutions exist for this) --------------------- */ 129 static PetscReal n_cm3[2] = {0, 0}; 130 PetscErrorCode FormFunction(TS ts, PetscReal tdummy, Vec X, Vec F, void *ptr) 131 { 132 LandauCtx *ctx = (LandauCtx *)ptr; /* user-defined application context */ 133 PetscScalar *f; 134 const PetscScalar *x; 135 const PetscReal k_B = 1.6e-12, e_cgs = 4.8e-10, proton_mass = 9.1094e-28, m_cgs[2] = {proton_mass, proton_mass * ctx->masses[1] / ctx->masses[0]}; // erg/eV, e, m as per NRL; 136 PetscReal AA, v_bar_ab, vTe, t1, TeDiff, Te, Ti, Tdiff; 137 138 PetscFunctionBeginUser; 139 PetscCall(VecGetArrayRead(X, &x)); 140 Te = PetscRealPart(2 * x[E_PERP_IDX] + x[E_PAR_IDX]) / 3, Ti = PetscRealPart(2 * x[I_PERP_IDX] + x[I_PAR_IDX]) / 3; 141 // thermalization from NRL Plasma formulary, assume Z = 1, mu = 2, n_i = n_e 142 v_bar_ab = 1.8e-19 * PetscSqrtReal(m_cgs[0] * m_cgs[1]) * n_cm3[0] * ctx->lambdas[0][1] * PetscPowReal(m_cgs[0] * Ti + m_cgs[1] * Te, -1.5); 143 PetscCall(VecGetArray(F, &f)); 144 for (PetscInt ii = 0; ii < 2; ii++) { 145 PetscReal tPerp = PetscRealPart(x[2 * ii + E_PERP_IDX]), tPar = PetscRealPart(x[2 * ii + E_PAR_IDX]), ff; 146 TeDiff = tPerp - tPar; 147 AA = tPerp / tPar - 1; 148 if (AA < 0) ff = PetscAtanhReal(PetscSqrtReal(-AA)) / PetscSqrtReal(-AA); 149 else ff = PetscAtanReal(PetscSqrtReal(AA)) / PetscSqrtReal(AA); 150 t1 = (-3 + (AA + 3) * ff) / PetscSqr(AA); 151 //PetscReal vTeB = 8.2e-7 * n_cm3[0] * ctx->lambdas[0][1] * PetscPowReal(Te, -1.5); 152 vTe = 2 * PetscSqrtReal(PETSC_PI / m_cgs[ii]) * PetscSqr(PetscSqr(e_cgs)) * n_cm3[0] * ctx->lambdas[0][1] * PetscPowReal(PetscRealPart(k_B * x[E_PAR_IDX]), -1.5) * t1; 153 t1 = vTe * TeDiff; // * 2; // scaling from NRL that makes it fit pretty good 154 155 f[2 * ii + E_PAR_IDX] = 2 * t1; // par 156 f[2 * ii + E_PERP_IDX] = -t1; // perp 157 Tdiff = (ii == 0) ? (Ti - Te) : (Te - Ti); 158 f[2 * ii + E_PAR_IDX] += v_bar_ab * Tdiff; 159 f[2 * ii + E_PERP_IDX] += v_bar_ab * Tdiff; 160 } 161 PetscCall(VecRestoreArrayRead(X, &x)); 162 PetscCall(VecRestoreArray(F, &f)); 163 PetscFunctionReturn(PETSC_SUCCESS); 164 } 165 166 /* -------------------- Form initial approximation ----------------- */ 167 static PetscReal T0[4] = {300, 390, 200, 260}; 168 PetscErrorCode createVec_NRL(LandauCtx *ctx, Vec *vec) 169 { 170 PetscScalar *x; 171 Vec Temps; 172 173 PetscFunctionBeginUser; 174 PetscCall(VecCreateSeq(PETSC_COMM_SELF, NUM_TEMPS, &Temps)); 175 PetscCall(VecGetArray(Temps, &x)); 176 for (PetscInt i = 0; i < NUM_TEMPS; i++) x[i] = T0[i]; 177 PetscCall(VecRestoreArray(Temps, &x)); 178 *vec = Temps; 179 PetscFunctionReturn(PETSC_SUCCESS); 180 } 181 182 PetscErrorCode createTS_NRL(LandauCtx *ctx, Vec Temps) 183 { 184 TSAdapt adapt; 185 TS ts; 186 187 PetscFunctionBeginUser; 188 PetscCall(TSCreate(PETSC_COMM_SELF, &ts)); 189 ctx->data = (void *)ts; // 'data' is for applications (eg, monitors) 190 PetscCall(TSSetApplicationContext(ts, ctx)); 191 PetscCall(TSSetType(ts, TSRK)); 192 PetscCall(TSSetRHSFunction(ts, NULL, FormFunction, ctx)); 193 PetscCall(TSSetSolution(ts, Temps)); 194 PetscCall(TSRKSetType(ts, TSRK2A)); 195 PetscCall(TSSetOptionsPrefix(ts, "nrl_")); 196 PetscCall(TSSetFromOptions(ts)); 197 PetscCall(TSGetAdapt(ts, &adapt)); 198 PetscCall(TSAdaptSetType(adapt, TSADAPTNONE)); 199 PetscCall(TSSetExactFinalTime(ts, TS_EXACTFINALTIME_MATCHSTEP)); 200 PetscCall(TSSetStepNumber(ts, 0)); 201 PetscCall(TSSetMaxSteps(ts, 1)); 202 PetscCall(TSSetTime(ts, 0)); 203 PetscFunctionReturn(PETSC_SUCCESS); 204 } 205 206 PetscErrorCode Monitor_nrl(TS ts, PetscInt stepi, PetscReal time, Vec X, void *actx) 207 { 208 const PetscScalar *x; 209 LandauCtx *ctx = (LandauCtx *)actx; /* user-defined application context */ 210 211 PetscFunctionBeginUser; 212 if (stepi % 100 == 0) { 213 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "nrl-step %d time= %g ", (int)stepi, (double)(time / ctx->t_0))); 214 PetscCall(VecGetArrayRead(X, &x)); 215 for (PetscInt i = 0; i < NUM_TEMPS; i++) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "%g ", (double)PetscRealPart(x[i]))); 216 PetscCall(VecRestoreArrayRead(X, &x)); 217 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "\n")); 218 } 219 PetscFunctionReturn(PETSC_SUCCESS); 220 } 221 222 PetscErrorCode Monitor(TS ts, PetscInt stepi, PetscReal time, Vec X, void *actx) 223 { 224 LandauCtx *ctx = (LandauCtx *)actx; /* user-defined application context */ 225 TS ts_nrl = (TS)ctx->data; 226 PetscInt printing = 0, logT; 227 228 PetscFunctionBeginUser; 229 if (ctx->verbose > 0) { // hacks to generate sparse data (eg, use '-dm_landau_verbose 1' and '-dm_landau_verbose -1' to get all steps printed) 230 PetscReal dt; 231 PetscCall(TSGetTimeStep(ts, &dt)); 232 logT = (PetscInt)PetscLog2Real(time / dt); 233 if (logT < 0) logT = 0; 234 ctx->verbose = PetscPowInt(2, logT) / 2; 235 if (ctx->verbose == 0) ctx->verbose = 1; 236 } 237 if (ctx->verbose) { 238 TSConvergedReason reason; 239 PetscCall(TSGetConvergedReason(ts, &reason)); 240 if (stepi % ctx->verbose == 0 || reason || stepi == 1 || ctx->verbose < 0) { 241 PetscInt nDMs, id; 242 DM pack; 243 Vec *XsubArray = NULL; 244 printing = 1; 245 PetscCall(TSGetDM(ts, &pack)); 246 PetscCall(DMCompositeGetNumberDM(pack, &nDMs)); 247 PetscCall(DMGetOutputSequenceNumber(ctx->plex[0], &id, NULL)); 248 PetscCall(DMSetOutputSequenceNumber(ctx->plex[0], id + 1, time)); 249 PetscCall(DMSetOutputSequenceNumber(ctx->plex[1], id + 1, time)); 250 PetscCall(PetscInfo(pack, "ex1 plot step %" PetscInt_FMT ", time = %g\n", id, (double)time)); 251 PetscCall(PetscMalloc(sizeof(*XsubArray) * nDMs, &XsubArray)); 252 PetscCall(DMCompositeGetAccessArray(pack, X, nDMs, NULL, XsubArray)); // read only 253 PetscCall(VecViewFromOptions(XsubArray[LAND_PACK_IDX(ctx->batch_view_idx, 0)], NULL, "-ex1_vec_view_e")); 254 PetscCall(VecViewFromOptions(XsubArray[LAND_PACK_IDX(ctx->batch_view_idx, 1)], NULL, "-ex1_vec_view_i")); 255 // temps 256 for (PetscInt grid = 0; grid < ctx->num_grids; grid++) { 257 PetscDS prob; 258 DM dm = ctx->plex[grid]; 259 PetscScalar user[2] = {0, 0}, tt[1]; 260 PetscReal vz_0 = 0, n, energy, e_perp, e_par, m_s = ctx->masses[ctx->species_offset[grid]]; 261 Vec Xloc = XsubArray[LAND_PACK_IDX(ctx->batch_view_idx, grid)]; 262 PetscCall(DMGetDS(dm, &prob)); 263 /* get n */ 264 PetscCall(PetscDSSetObjective(prob, 0, &f0_n)); 265 PetscCall(DMPlexComputeIntegralFEM(dm, Xloc, tt, NULL)); 266 n = PetscRealPart(tt[0]); 267 /* get vz */ 268 PetscCall(PetscDSSetObjective(prob, 0, &f0_vz)); 269 PetscCall(DMPlexComputeIntegralFEM(dm, Xloc, tt, NULL)); 270 user[0] = vz_0 = PetscRealPart(tt[0]) / n; 271 /* energy temp */ 272 PetscCall(PetscDSSetConstants(prob, 2, user)); 273 PetscCall(PetscDSSetObjective(prob, 0, &f0_v2_shift)); 274 PetscCall(DMPlexComputeIntegralFEM(dm, Xloc, tt, ctx)); 275 energy = PetscRealPart(tt[0]) * ctx->v_0 * ctx->v_0 * m_s / n / 3; // scale? 276 energy *= kev_joul * 1000; // T eV 277 /* energy temp - par */ 278 PetscCall(PetscDSSetConstants(prob, 2, user)); 279 PetscCall(PetscDSSetObjective(prob, 0, &f0_v2_par_shift)); 280 PetscCall(DMPlexComputeIntegralFEM(dm, Xloc, tt, ctx)); 281 e_par = PetscRealPart(tt[0]) * ctx->v_0 * ctx->v_0 * m_s / n; 282 e_par *= kev_joul * 1000; // eV 283 /* energy temp - perp */ 284 PetscCall(PetscDSSetConstants(prob, 2, user)); 285 PetscCall(PetscDSSetObjective(prob, 0, &f0_v2_perp)); 286 PetscCall(DMPlexComputeIntegralFEM(dm, Xloc, tt, ctx)); 287 e_perp = PetscRealPart(tt[0]) * ctx->v_0 * ctx->v_0 * m_s / n / 2; 288 e_perp *= kev_joul * 1000; // eV 289 if (grid == 0) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "step %4d) time= %e temperature (eV): ", (int)stepi, (double)time)); 290 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "%s T= %9.4e T_par= %9.4e T_perp= %9.4e ", (grid == 0) ? "electron:" : ";ion:", (double)energy, (double)e_par, (double)e_perp)); 291 if (n_cm3[grid] == 0) n_cm3[grid] = ctx->n_0 * n * 1e-6; // does not change m^3 --> cm^3 292 } 293 // cleanup 294 PetscCall(DMCompositeRestoreAccessArray(pack, X, nDMs, NULL, XsubArray)); 295 PetscCall(PetscFree(XsubArray)); 296 } 297 } 298 /* evolve NRL data, end line */ 299 if (n_cm3[NUM_TEMPS / 2 - 1] < 0 && ts_nrl) { 300 PetscCall(TSDestroy(&ts_nrl)); 301 ctx->data = NULL; 302 if (printing) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "\nSTOP printing NRL Ts\n")); 303 } else if (ts_nrl) { 304 const PetscScalar *x; 305 PetscReal dt_real, dt; 306 Vec U; 307 PetscCall(TSGetTimeStep(ts, &dt)); // dt for NEXT time step 308 dt_real = dt * ctx->t_0; 309 PetscCall(TSGetSolution(ts_nrl, &U)); 310 if (printing) { 311 PetscCall(VecGetArrayRead(U, &x)); 312 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "NRL_e_par= %9.4e NRL_e_perp= %9.4e ", (double)PetscRealPart(x[E_PAR_IDX]), (double)PetscRealPart(x[E_PERP_IDX]))); 313 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "NRL_i_par= %9.4e NRL_i_perp= %9.4e\n", (double)PetscRealPart(x[I_PAR_IDX]), (double)PetscRealPart(x[I_PERP_IDX]))); 314 /* if (n_cm3[0] > 0) { */ 315 /* } else PetscCall(PetscPrintf(PETSC_COMM_WORLD, "\n")); */ 316 PetscCall(VecRestoreArrayRead(U, &x)); 317 } 318 // we have the next time step, so need to advance now 319 PetscCall(TSSetTimeStep(ts_nrl, dt_real)); 320 PetscCall(TSSetMaxSteps(ts_nrl, stepi + 1)); // next step 321 PetscCall(TSSolve(ts_nrl, NULL)); 322 } else if (printing) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "\n")); 323 if (printing) PetscCall(DMPlexLandauPrintNorms(X, stepi /*id + 1*/)); 324 PetscFunctionReturn(PETSC_SUCCESS); 325 } 326 327 int main(int argc, char **argv) 328 { 329 DM pack; 330 Vec X; 331 PetscInt dim = 2, nDMs; 332 TS ts, ts_nrl = NULL; 333 Mat J; 334 Vec *XsubArray = NULL; 335 LandauCtx *ctx; 336 PetscMPIInt rank; 337 PetscBool use_nrl = PETSC_TRUE; 338 PetscBool print_nrl = PETSC_FALSE; 339 PetscReal dt0; 340 341 PetscFunctionBeginUser; 342 PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 343 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 344 if (rank) { /* turn off output stuff for duplicate runs */ 345 PetscCall(PetscOptionsClearValue(NULL, "-ex1_dm_view_e")); 346 PetscCall(PetscOptionsClearValue(NULL, "-ex1_dm_view_i")); 347 PetscCall(PetscOptionsClearValue(NULL, "-ex1_vec_view_e")); 348 PetscCall(PetscOptionsClearValue(NULL, "-ex1_vec_view_i")); 349 PetscCall(PetscOptionsClearValue(NULL, "-info")); 350 PetscCall(PetscOptionsClearValue(NULL, "-snes_converged_reason")); 351 PetscCall(PetscOptionsClearValue(NULL, "-pc_bjkokkos_ksp_converged_reason")); 352 PetscCall(PetscOptionsClearValue(NULL, "-ksp_converged_reason")); 353 PetscCall(PetscOptionsClearValue(NULL, "-ts_adapt_monitor")); 354 PetscCall(PetscOptionsClearValue(NULL, "-ts_monitor")); 355 PetscCall(PetscOptionsClearValue(NULL, "-snes_monitor")); 356 } 357 PetscCall(PetscOptionsGetInt(NULL, NULL, "-dim", &dim, NULL)); 358 PetscCall(PetscOptionsGetBool(NULL, NULL, "-use_nrl", &use_nrl, NULL)); 359 PetscCall(PetscOptionsGetBool(NULL, NULL, "-print_nrl", &print_nrl, NULL)); 360 /* Create a mesh */ 361 PetscCall(DMPlexLandauCreateVelocitySpace(PETSC_COMM_SELF, dim, "", &X, &J, &pack)); 362 PetscCall(DMSetUp(pack)); 363 PetscCall(DMGetApplicationContext(pack, &ctx)); 364 PetscCheck(ctx->num_grids == 2, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Must have two grids: use '-dm_landau_num_species_grid 1,1'"); 365 PetscCheck(ctx->num_species == 2, PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "Must have two species: use '-dm_landau_num_species_grid 1,1'"); 366 PetscCall(DMCompositeGetNumberDM(pack, &nDMs)); 367 /* output plot names */ 368 PetscCall(PetscMalloc(sizeof(*XsubArray) * nDMs, &XsubArray)); 369 PetscCall(DMCompositeGetAccessArray(pack, X, nDMs, NULL, XsubArray)); // read only 370 PetscCall(PetscObjectSetName((PetscObject)XsubArray[LAND_PACK_IDX(ctx->batch_view_idx, 0)], 0 == 0 ? "ue" : "ui")); 371 PetscCall(PetscObjectSetName((PetscObject)XsubArray[LAND_PACK_IDX(ctx->batch_view_idx, 1)], 1 == 0 ? "ue" : "ui")); 372 /* add bimaxwellian anisotropic test */ 373 for (PetscInt b_id = 0; b_id < ctx->batch_sz; b_id++) { 374 for (PetscInt grid = 0; grid < ctx->num_grids; grid++) { 375 PetscReal shifts[2]; 376 PetscCall(SetMaxwellians(ctx->plex[grid], XsubArray[LAND_PACK_IDX(b_id, grid)], 0.0, ctx->thermal_temps, ctx->n, grid, shifts, ctx)); 377 } 378 } 379 PetscCall(DMCompositeRestoreAccessArray(pack, X, nDMs, NULL, XsubArray)); 380 PetscCall(PetscFree(XsubArray)); 381 /* plot */ 382 PetscCall(DMSetOutputSequenceNumber(ctx->plex[0], -1, 0.0)); 383 PetscCall(DMSetOutputSequenceNumber(ctx->plex[1], -1, 0.0)); 384 PetscCall(DMViewFromOptions(ctx->plex[0], NULL, "-ex1_dm_view_e")); 385 PetscCall(DMViewFromOptions(ctx->plex[1], NULL, "-ex1_dm_view_i")); 386 /* Create timestepping solver context */ 387 PetscCall(TSCreate(PETSC_COMM_SELF, &ts)); 388 PetscCall(TSSetDM(ts, pack)); 389 PetscCall(TSSetIFunction(ts, NULL, DMPlexLandauIFunction, NULL)); 390 PetscCall(TSSetIJacobian(ts, J, J, DMPlexLandauIJacobian, NULL)); 391 PetscCall(TSSetExactFinalTime(ts, TS_EXACTFINALTIME_STEPOVER)); 392 PetscCall(TSSetFromOptions(ts)); 393 PetscCall(TSSetSolution(ts, X)); 394 PetscCall(TSMonitorSet(ts, Monitor, ctx, NULL)); 395 /* Create NRL timestepping */ 396 if (use_nrl || print_nrl) { 397 Vec NRL_vec; 398 PetscCall(createVec_NRL(ctx, &NRL_vec)); 399 PetscCall(createTS_NRL(ctx, NRL_vec)); 400 PetscCall(VecDestroy(&NRL_vec)); 401 } else ctx->data = NULL; 402 /* solve */ 403 PetscCall(TSGetTimeStep(ts, &dt0)); 404 PetscCall(TSSetTime(ts, dt0 / 2)); 405 PetscCall(TSSolve(ts, X)); 406 /* test add field method & output */ 407 PetscCall(DMPlexLandauAccess(pack, X, landau_field_print_access_callback, NULL)); 408 // run NRL in separate TS 409 ts_nrl = (TS)ctx->data; 410 if (print_nrl) { 411 PetscReal finalTime, dt_real, tstart = dt0 * ctx->t_0 / 2; // hack 412 Vec U; 413 PetscScalar *x; 414 PetscInt nsteps; 415 dt_real = dt0 * ctx->t_0; 416 PetscCall(TSSetTimeStep(ts_nrl, dt_real)); 417 PetscCall(TSGetTime(ts, &finalTime)); 418 finalTime *= ctx->t_0; 419 PetscCall(TSSetMaxTime(ts_nrl, finalTime)); 420 nsteps = (PetscInt)(finalTime / dt_real) + 1; 421 PetscCall(TSSetMaxSteps(ts_nrl, nsteps)); 422 PetscCall(TSSetStepNumber(ts_nrl, 0)); 423 PetscCall(TSSetTime(ts_nrl, tstart)); 424 PetscCall(TSGetSolution(ts_nrl, &U)); 425 PetscCall(VecGetArray(U, &x)); 426 for (PetscInt i = 0; i < NUM_TEMPS; i++) x[i] = T0[i]; 427 PetscCall(VecRestoreArray(U, &x)); 428 PetscCall(TSMonitorSet(ts_nrl, Monitor_nrl, ctx, NULL)); 429 PetscCall(TSSolve(ts_nrl, NULL)); 430 } 431 /* clean up */ 432 PetscCall(TSDestroy(&ts)); 433 PetscCall(TSDestroy(&ts_nrl)); 434 PetscCall(VecDestroy(&X)); 435 PetscCall(DMPlexLandauDestroyVelocitySpace(&pack)); 436 PetscCall(PetscFinalize()); 437 return 0; 438 } 439 440 /*TEST 441 testset: 442 requires: p4est !complex double defined(PETSC_USE_DMLANDAU_2D) 443 output_file: output/ex1_0.out 444 filter: grep -v "DM" 445 args: -dm_landau_amr_levels_max 0,2 -dm_landau_amr_post_refine 0 -dm_landau_amr_re_levels 2 -dm_landau_domain_radius 6,6 -dm_landau_electron_shift 1.5 -dm_landau_ion_charges 1 -dm_landau_ion_masses 2 -dm_landau_n 1,1 -dm_landau_n_0 1e20 -dm_landau_num_cells 2,4 -dm_landau_num_species_grid 1,1 -dm_landau_re_radius 2 -use_nrl true -print_nrl false -dm_landau_thermal_temps .3,.2 -dm_landau_type p4est -dm_landau_verbose -1 -dm_preallocate_only false -ex1_dm_view_e -ksp_type preonly -pc_type lu -petscspace_degree 3 -snes_converged_reason -snes_rtol 1.e-14 -snes_stol 1.e-14 -ts_adapt_clip .5,1.5 -ts_adapt_dt_max 5 -ts_adapt_monitor -ts_adapt_scale_solve_failed 0.5 -ts_arkimex_type 1bee -ts_time_step .01 -ts_max_snes_failures unlimited -ts_max_steps 1 -ts_max_time 8 -ts_monitor -ts_rtol 1e-2 -ts_type arkimex 446 test: 447 suffix: cpu 448 args: -dm_landau_device_type cpu -dm_landau_use_relativistic_corrections 449 test: 450 suffix: kokkos 451 requires: kokkos_kernels !defined(PETSC_HAVE_CUDA_CLANG) 452 args: -dm_landau_device_type kokkos -dm_mat_type aijkokkos -dm_vec_type kokkos 453 454 testset: 455 requires: !complex defined(PETSC_USE_DMLANDAU_2D) p4est 456 args: -dm_landau_type p4est -dm_landau_num_species_grid 1,1 -dm_landau_n 1,1 -dm_landau_thermal_temps 2,1 -dm_landau_ion_charges 1 -dm_landau_ion_masses 2 -petscspace_degree 2 -ts_type beuler -ts_time_step .1 -ts_max_steps 1 -dm_landau_verbose 2 -ksp_type preonly -pc_type lu -dm_landau_device_type cpu -use_nrl false -print_nrl -snes_rtol 1.e-14 -snes_stol 1.e-14 -snes_converged_reason -dm_landau_device_type cpu 457 nsize: 1 458 test: 459 suffix: sphere 460 args: -dm_landau_sphere -dm_landau_amr_levels_max 1,1 -dm_landau_sphere_inner_radius_90degree_scale .55 -dm_landau_sphere_inner_radius_45degree_scale .5 461 test: 462 suffix: re 463 args: -dm_landau_num_cells 4,4 -dm_landau_amr_levels_max 0,2 -dm_landau_z_radius_pre 2.5 -dm_landau_z_radius_post 3.75 -dm_landau_amr_z_refine_pre 1 -dm_landau_amr_z_refine_post 1 -dm_landau_electron_shift 1.25 -info :vec 464 465 TEST*/ 466