xref: /honee/examples/navierstokes.c (revision da02a6e7947cab8e173fd83bf2b4eda896c06b14)
1 // SPDX-FileCopyrightText: Copyright (c) 2017-2024, HONEE contributors.
2 // SPDX-License-Identifier: Apache-2.0 OR BSD-2-Clause
3 
4 //                        libCEED + PETSc Example: Navier-Stokes
5 //
6 // This example demonstrates a simple usage of libCEED with PETSc to solve a Navier-Stokes problem.
7 //
8 // Build with:
9 //
10 //     make [PETSC_DIR=</path/to/petsc>] [CEED_DIR=</path/to/libceed>] navierstokes
11 //
12 // Sample runs:
13 //
14 //     ./navierstokes -ceed /cpu/self -options_file gaussianwave.yml
15 //     ./navierstokes -ceed /gpu/cuda -problem advection -degree 1
16 //
17 //TESTARGS(name="Newtonian and Riemann Solver Unit Tests",only="cpu") -ceed {ceed_resource} -test_type solver -options_file examples/gaussianwave.yaml -compare_final_state_atol 1e100 -compare_final_state_filename tests/output/fluids-navierstokes-gaussianwave-IDL-entropy.bin -dm_plex_box_faces 5,5,1 -ts_max_steps 0 -newtonian_unit_tests -riemann_solver_unit_tests
18 //TESTARGS(name="Gaussian Wave, IDL and Entropy variables") -ceed {ceed_resource} -test_type solver -options_file examples/gaussianwave.yaml -compare_final_state_atol 2e-11 -compare_final_state_filename tests/output/fluids-navierstokes-gaussianwave-IDL-entropy.bin -state_var entropy -dm_plex_box_faces 5,5,1 -ts_max_steps 5 -idl_decay_time 2e-3 -idl_length 0.25 -idl_start 0 -idl_pressure 70
19 //TESTARGS(name="Blasius, SGS DataDriven Sequential Torch",only="torch") -ceed {ceed_resource} -options_file tests/blasius_stgtest.yaml -sgs_model_type data_driven -sgs_model_dd_leakyrelu_alpha 0.3 -sgs_model_dd_parameter_dir examples/dd_sgs_data -ts_dt 2e-9 -state_var primitive -ksp_rtol 1e-12 -snes_rtol 1e-12 -stg_mean_only -stg_fluctuating_IC -test_type solver -compare_final_state_atol 1e-10 -compare_final_state_filename tests/output/fluids-navierstokes-blasius-sgs-data-driven.bin -sgs_model_dd_implementation sequential_torch -sgs_model_dd_torch_model_path ./tests/createPyTorchModel/NNModel_HIT_fp64_jit.pt
20 //TESTARGS(name="Blasius, SGS DataDriven Sequential Ceed") -ceed {ceed_resource} -options_file tests/blasius_stgtest.yaml -sgs_model_type data_driven -sgs_model_dd_leakyrelu_alpha 0.3 -sgs_model_dd_parameter_dir examples/dd_sgs_data -ts_dt 2e-9 -state_var primitive -ksp_rtol 1e-12 -snes_rtol 1e-12 -stg_mean_only -stg_fluctuating_IC -test_type solver -compare_final_state_atol 1e-10 -compare_final_state_filename tests/output/fluids-navierstokes-blasius-sgs-data-driven.bin -sgs_model_dd_implementation sequential_ceed
21 //TESTARGS(name="Gaussian Wave, explicit, supg, IDL") -ceed {ceed_resource} -test_type solver -options_file examples/gaussianwave.yaml -compare_final_state_atol 1e-8 -compare_final_state_filename tests/output/fluids-navierstokes-gaussianwave-explicit.bin -dm_plex_box_faces 2,2,1 -ts_max_steps 5 -degree 3 -implicit false -ts_type rk -stab supg -state_var conservative -mass_ksp_type gmres -mass_pc_jacobi_type diagonal -idl_decay_time 2e-3 -idl_length 0.25 -idl_start 0 -idl_pressure 70
22 //TESTARGS(name="Advection 2D, rotation, explicit, supg, consistent mass") -ceed {ceed_resource} -test_type solver -problem advection -degree 3 -dm_plex_box_faces 2,2 -dm_plex_box_lower 0,0 -dm_plex_box_upper 125,125 -bc_wall 1,2,3,4 -wall_comps 4 -units_kilogram 1e-9 -rc 100. -ts_dt 1e-3 -ts_max_steps 10 -stab supg -Ctaus 0.5 -mass_ksp_type gmres -mass_pc_type vpbjacobi -compare_final_state_atol 1e-10 -compare_final_state_filename tests/output/fluids-navierstokes-adv2d-rotation-explicit-stab-supg-consistent-mass.bin
23 //TESTARGS(name="Advection, skew") -ceed {ceed_resource} -test_type solver -options_file examples/advection.yaml -ts_max_steps 5 -wind_type translation -wind_translation -0.5547002,0.83205029,0 -advection_ic_type skew  -dm_plex_box_faces 2,1,1 -degree 2 -stab supg -stab_tau advdiff_shakib -Ctau_a 4 -ksp_type gmres -diffusion_coeff 5e-4 -compare_final_state_atol 7e-10 -compare_final_state_filename tests/output/fluids-navierstokes-adv-skew.bin
24 //TESTARGS(name="Blasius, bc_slip, Indirect Diffusive Flux Projection") -ceed {ceed_resource} -test_type solver -options_file examples/blasius.yaml -ts_max_steps 5 -dm_plex_box_faces 3,20,1 -platemesh_nDelta 10 -platemesh_growth 1.2 -bc_outflow 5 -bc_slip 4 -compare_final_state_atol 2E-11 -compare_final_state_filename tests/output/fluids-navierstokes-blasius-bc_slip_indirect.bin -div_diff_flux_projection_method indirect
25 //TESTARGS(name="Blasius, bc_slip, Direct Diffusive Flux Projection") -ceed {ceed_resource} -test_type solver -options_file examples/blasius.yaml -ts_max_steps 5 -dm_plex_box_faces 3,20,1 -platemesh_nDelta 10 -platemesh_growth 1.2 -bc_outflow 5 -bc_slip 4 -compare_final_state_atol 2E-11 -compare_final_state_filename tests/output/fluids-navierstokes-blasius-bc_slip.bin -div_diff_flux_projection_method direct
26 //TESTARGS(name="Advection, rotation, cosine") -ceed {ceed_resource} -test_type solver -options_file examples/advection.yaml -ts_max_steps 0 -advection_ic_type cosine_hill -dm_plex_box_faces 2,1,1 -compare_final_state_atol 1e-10 -compare_final_state_filename tests/output/fluids-navierstokes-adv-rotation-cosine.bin
27 //TESTARGS(name="Gaussian Wave, using MatShell") -ceed {ceed_resource} -test_type solver -options_file examples/gaussianwave.yaml -compare_final_state_atol 1e-8 -compare_final_state_filename tests/output/fluids-navierstokes-gaussianwave-shell.bin -dm_plex_box_faces 2,2,1 -ts_max_steps 5 -degree 3 -amat_type shell -pc_type vpbjacobi -ts_alpha_radius 0.5
28 //TESTARGS(name="Taylor-Green Vortex IC") -ceed {ceed_resource} -problem taylor_green -test_type solver -dm_plex_dim 3 -dm_plex_box_faces 6,6,6 -ts_max_steps 0 -compare_final_state_atol 1e-12 -compare_final_state_filename tests/output/fluids-navierstokes-taylor-green-IC.bin
29 //TESTARGS(name="Blasius, SGS DataDriven Fused") -ceed {ceed_resource} -options_file tests/blasius_stgtest.yaml -sgs_model_type data_driven -sgs_model_dd_leakyrelu_alpha 0.3 -sgs_model_dd_parameter_dir examples/dd_sgs_data -ts_dt 2e-9 -state_var primitive -ksp_rtol 1e-12 -snes_rtol 1e-12 -stg_mean_only -stg_fluctuating_IC -test_type solver -compare_final_state_atol 1e-10 -compare_final_state_filename tests/output/fluids-navierstokes-blasius-sgs-data-driven.bin
30 //TESTARGS(name="Blasius, Anisotropic Differential Filter") -ceed {ceed_resource} -test_type diff_filter -options_file tests/blasius_test.yaml -compare_final_state_atol 5e-10 -compare_final_state_filename tests/output/fluids-navierstokes-blasius_diff_filter_aniso_vandriest.bin -diff_filter_monitor -ts_max_steps 0 -state_var primitive -diff_filter_friction_length 1e-5 -diff_filter_wall_damping_function van_driest -diff_filter_ksp_rtol 1e-8 -diff_filter_grid_based_width -diff_filter_width_scaling 1,0.7,1
31 //TESTARGS(name="Blasius, Isotropic Differential Filter") -ceed {ceed_resource} -test_type diff_filter -options_file tests/blasius_test.yaml -compare_final_state_atol 2e-12 -compare_final_state_filename tests/output/fluids-navierstokes-blasius_diff_filter_iso.bin -diff_filter_monitor -ts_max_steps 0 -diff_filter_width_scaling 4.2e-5,4.2e-5,4.2e-5 -diff_filter_ksp_atol 1e-14 -diff_filter_ksp_rtol 1e-16
32 //TESTARGS(name="Gaussian Wave, with IDL") -ceed {ceed_resource} -test_type solver -options_file examples/gaussianwave.yaml -compare_final_state_atol 2e-11 -compare_final_state_filename tests/output/fluids-navierstokes-gaussianwave-IDL.bin -dm_plex_box_faces 5,5,1 -ts_max_steps 5 -idl_decay_time 2e-3 -idl_length 0.25 -idl_start 0 -ts_alpha_radius 0.5 -idl_pressure 70
33 //TESTARGS(name="Spanwise Turbulence Statistics") -ceed {ceed_resource} -test_type turb_spanstats -options_file tests/stats_test.yaml -compare_final_state_atol 1E-11 -compare_final_state_filename tests/output/fluids-navierstokes-turb-spanstats-stats.bin
34 //TESTARGS(name="Blasius") -ceed {ceed_resource} -test_type solver -options_file tests/blasius_test.yaml -compare_final_state_atol 2E-11 -compare_final_state_filename tests/output/fluids-navierstokes-blasius.bin
35 //TESTARGS(name="Blasius, STG Inflow") -ceed {ceed_resource} -test_type solver -options_file tests/blasius_stgtest.yaml -compare_final_state_atol 2E-11 -compare_final_state_filename tests/output/fluids-navierstokes-blasius_STG.bin
36 //TESTARGS(name="Blasius, STG Inflow, Weak Temperature") -ceed {ceed_resource} -test_type solver -options_file tests/blasius_stgtest.yaml -compare_final_state_atol 1E-11 -compare_final_state_filename tests/output/fluids-navierstokes-blasius_STG_weakT.bin -weakT
37 //TESTARGS(name="Blasius, Strong STG Inflow") -ceed {ceed_resource} -test_type solver -options_file tests/blasius_stgtest.yaml -compare_final_state_atol 1E-10 -compare_final_state_filename tests/output/fluids-navierstokes-blasius_STG_strongBC.bin -stg_strong true
38 //TESTARGS(name="Channel") -ceed {ceed_resource} -test_type solver -options_file examples/channel.yaml -compare_final_state_atol 2e-11 -compare_final_state_filename tests/output/fluids-navierstokes-channel.bin -dm_plex_box_faces 5,5,1 -ts_max_steps 5
39 //TESTARGS(name="Channel, Primitive") -ceed {ceed_resource} -test_type solver -options_file examples/channel.yaml -compare_final_state_atol 2e-11 -compare_final_state_filename tests/output/fluids-navierstokes-channel-prim.bin -dm_plex_box_faces 5,5,1 -ts_max_steps 5 -state_var primitive
40 //TESTARGS(name="Density Current, explicit") -ceed {ceed_resource} -test_type solver -degree 3 -q_extra 2 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -bc_symmetry_x 5,6 -bc_symmetry_y 3,4 -bc_symmetry_z 1,2 -units_kilogram 1e-9 -center 62.5,62.5,187.5 -rc 100. -thetaC -35. -mu 75 -gravity 0,0,-9.81 -ts_dt 1e-3 -units_meter 1e-2 -units_second 1e-2 -ts_max_steps 10 -compare_final_state_atol 1E-11 -compare_final_state_filename tests/output/fluids-navierstokes-dc-explicit.bin
41 //TESTARGS(name="Density Current, implicit, no stabilization") -ceed {ceed_resource} -test_type solver -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -bc_symmetry_x 5,6 -bc_symmetry_y 3,4 -bc_symmetry_z 1,2 -units_kilogram 1e-9 -center 62.5,62.5,187.5 -rc 100. -thetaC -35. -mu 75 -gravity 0,0,-9.81 -units_meter 1e-2 -units_second 1e-2 -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -ts_type alpha -ts_max_steps 10 -compare_final_state_atol 5E-4 -compare_final_state_filename tests/output/fluids-navierstokes-dc-implicit-stab-none.bin
42 //TESTARGS(name="Advection, rotation, implicit, SUPG stabilization") -ceed {ceed_resource} -test_type solver -problem advection -CtauS .3 -stab supg -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -bc_wall 1,2,3,4,5,6 -wall_comps 4 -units_kilogram 1e-9 -rc 100. -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -dm_mat_preallocate_skip 0 -ts_type alpha -compare_final_state_atol 5E-4 -ts_max_steps 10 -compare_final_state_filename tests/output/fluids-navierstokes-adv-rotation-implicit-stab-supg.bin
43 //TESTARGS(name="Advection, translation, implicit, SU stabilization") -ceed {ceed_resource} -test_type solver -problem advection -CtauS .3 -stab su -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -units_kilogram 1e-9 -rc 100. -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -dm_mat_preallocate_skip 0 -ts_type alpha -wind_type translation -wind_translation .53,-1.33,-2.65 -bc_inflow 1,2,3,4,5,6 -ts_max_steps 10 -compare_final_state_atol 5E-4 -compare_final_state_filename tests/output/fluids-navierstokes-adv-translation-implicit-stab-su.bin
44 //TESTARGS(name="Advection 2D, rotation, explicit, strong form") -ceed {ceed_resource} -test_type solver -problem advection -strong_form 1 -degree 3 -dm_plex_box_faces 2,2 -dm_plex_box_lower 0,0 -dm_plex_box_upper 125,125 -bc_wall 1,2,3,4 -wall_comps 4 -units_kilogram 1e-9 -rc 100. -ts_dt 1e-3 -compare_final_state_atol 5E-11 -ts_max_steps 10 -compare_final_state_filename tests/output/fluids-navierstokes-adv2d-rotation-explicit-strong.bin
45 //TESTARGS(name="Advection 2D, rotation, implicit, SUPG stabilization") -ceed {ceed_resource} -test_type solver -problem advection -CtauS .3 -stab supg -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0 -dm_plex_box_upper 125,125 -bc_wall 1,2,3,4 -wall_comps 4 -units_kilogram 1e-9 -rc 100. -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -dm_mat_preallocate_skip 0 -ts_type alpha -ts_max_steps 10 -compare_final_state_atol 5E-4 -compare_final_state_filename tests/output/fluids-navierstokes-adv2d-rotation-implicit-stab-supg.bin
46 //TESTARGS(name="Euler, implicit") -ceed {ceed_resource} -test_type solver -problem euler_vortex -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -units_meter 1e-4 -units_second 1e-4 -mean_velocity 1.4,-2.,0 -bc_inflow 4,6 -bc_outflow 3,5 -bc_symmetry_z 1,2 -vortex_strength 2 -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -dm_mat_preallocate_skip 0 -ts_type alpha -ts_max_steps 10 -compare_final_state_atol 5E-4 -compare_final_state_filename tests/output/fluids-navierstokes-euler-implicit.bin
47 //TESTARGS(name="Euler, explicit") -ceed {ceed_resource} -test_type solver -problem euler_vortex -degree 3 -q_extra 2 -dm_plex_box_faces 2,2,1 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -units_meter 1e-4 -units_second 1e-4 -mean_velocity 1.4,-2.,0 -bc_inflow 4,6 -bc_outflow 3,5 -bc_symmetry_z 1,2 -vortex_strength 2 -ts_dt 1e-7 -ts_rk_type 5bs -ts_rtol 1e-10 -ts_atol 1e-10 -ts_max_steps 10 -compare_final_state_atol 1E-7 -compare_final_state_filename tests/output/fluids-navierstokes-euler-explicit.bin
48 //TESTARGS(name="Sod Shocktube, explicit, SU stabilization, y-z-beta shock capturing") -ceed {ceed_resource} -test_type solver -problem shocktube -degree 1 -q_extra 2 -dm_plex_box_faces 50,1,1 -units_meter 1e-2 units_second 1e-2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 1000,20,20 -dm_plex_dim 3 -bc_symmetry_x 5,6 -bc_symmetry_y 3,4 -bc_symmetry_z 1,2 -yzb -stab su -ts_max_steps 10 -compare_final_state_atol 1E-11 -compare_final_state_filename tests/output/fluids-navierstokes-shocktube-explicit-su-yzb.bin
49 
50 /// @file
51 /// Navier-Stokes example using PETSc
52 
53 const char help[] = "Solve Navier-Stokes using PETSc and libCEED\n";
54 
55 #include <navierstokes.h>
56 #include <petscdevice.h>
57 
58 #include <ceed.h>
59 #include <petscdmplex.h>
60 #include <petscts.h>
61 
62 int main(int argc, char **argv) {
63   // ---------------------------------------------------------------------------
64   // Initialize PETSc
65   // ---------------------------------------------------------------------------
66   PetscCall(PetscInitialize(&argc, &argv, NULL, help));
67 
68   // ---------------------------------------------------------------------------
69   // Create structs
70   // ---------------------------------------------------------------------------
71   AppCtx app_ctx;
72   PetscCall(PetscCalloc1(1, &app_ctx));
73 
74   ProblemData problem;
75   PetscCall(PetscCalloc1(1, &problem));
76 
77   User user;
78   PetscCall(PetscCalloc1(1, &user));
79 
80   CeedData ceed_data;
81   PetscCall(PetscCalloc1(1, &ceed_data));
82 
83   SimpleBC bc;
84   PetscCall(PetscCalloc1(1, &bc));
85 
86   Physics phys_ctx;
87   PetscCall(PetscCalloc1(1, &phys_ctx));
88 
89   Units units;
90   PetscCall(PetscCalloc1(1, &units));
91 
92   user->app_ctx            = app_ctx;
93   user->units              = units;
94   user->phys               = phys_ctx;
95   problem->set_bc_from_ics = PETSC_TRUE;
96 
97   PetscCall(RegisterLogEvents());
98 
99   // ---------------------------------------------------------------------------
100   // Process command line options
101   // ---------------------------------------------------------------------------
102   // -- Register problems to be available on the command line
103   PetscCall(RegisterProblems_NS(app_ctx));
104 
105   // -- Process general command line options
106   MPI_Comm comm = PETSC_COMM_WORLD;
107   user->comm    = comm;
108   PetscCall(ProcessCommandLineOptions(comm, app_ctx, bc));
109   PetscCall(BoundaryConditionSetUp(user, problem, app_ctx, bc));
110 
111   // ---------------------------------------------------------------------------
112   // Initialize libCEED
113   // ---------------------------------------------------------------------------
114   // -- Initialize backend
115   Ceed ceed;
116   PetscCheck(CeedInit(app_ctx->ceed_resource, &ceed) == CEED_ERROR_SUCCESS, comm, PETSC_ERR_LIB, "Ceed initialization failed");
117   user->ceed = ceed;
118 
119   PetscCheck(CeedSetErrorHandler(ceed, CeedErrorStore) == CEED_ERROR_SUCCESS, comm, PETSC_ERR_LIB, "Setting libCEED error handler failed");
120 
121   // -- Check preferred MemType
122   CeedMemType mem_type_backend;
123   PetscCallCeed(ceed, CeedGetPreferredMemType(ceed, &mem_type_backend));
124 
125   {
126     const char *resource;
127     PetscCallCeed(ceed, CeedGetResource(ceed, &resource));
128     if (strstr(resource, "/gpu/sycl")) {
129       PetscDeviceContext dctx;
130       PetscCall(PetscDeviceContextGetCurrentContext(&dctx));
131       void *stream_handle;
132       PetscCall(PetscDeviceContextGetStreamHandle(dctx, &stream_handle));
133       PetscCallCeed(ceed, CeedSetStream(ceed, stream_handle));
134     }
135   }
136 
137   // ---------------------------------------------------------------------------
138   // Set up global mesh
139   // ---------------------------------------------------------------------------
140   // -- Create DM
141   DM      dm;
142   VecType vec_type = NULL;
143   MatType mat_type = NULL;
144   switch (mem_type_backend) {
145     case CEED_MEM_HOST:
146       vec_type = VECSTANDARD;
147       break;
148     case CEED_MEM_DEVICE: {
149       const char *resolved;
150       PetscCallCeed(ceed, CeedGetResource(ceed, &resolved));
151       if (strstr(resolved, "/gpu/cuda")) vec_type = VECCUDA;
152       else if (strstr(resolved, "/gpu/hip")) vec_type = VECKOKKOS;
153       else if (strstr(resolved, "/gpu/sycl")) vec_type = VECKOKKOS;
154       else vec_type = VECSTANDARD;
155     }
156   }
157   if (strstr(vec_type, VECCUDA)) mat_type = MATAIJCUSPARSE;
158   else if (strstr(vec_type, VECKOKKOS)) mat_type = MATAIJKOKKOS;
159   else mat_type = MATAIJ;
160   PetscCall(CreateDM(comm, problem, mat_type, vec_type, &dm));
161   user->dm = dm;
162   PetscCall(DMSetApplicationContext(dm, user));
163 
164   // ---------------------------------------------------------------------------
165   // Choose the problem from the list of registered problems
166   // ---------------------------------------------------------------------------
167   {
168     PetscErrorCode (*p)(ProblemData, DM, void *, SimpleBC);
169     PetscCall(PetscFunctionListFind(app_ctx->problems, app_ctx->problem_name, &p));
170     PetscCheck(p, PETSC_COMM_SELF, 1, "Problem '%s' not found", app_ctx->problem_name);
171     PetscCall((*p)(problem, dm, &user, bc));
172   }
173 
174   // -- Set up DM
175   PetscCall(SetUpDM(dm, problem, app_ctx->degree, app_ctx->q_extra, bc, phys_ctx));
176 
177   // -- Refine DM for high-order viz
178   if (app_ctx->viz_refine) PetscCall(VizRefineDM(dm, user, problem, bc, phys_ctx));
179 
180   // ---------------------------------------------------------------------------
181   // Create solution vectors
182   // ---------------------------------------------------------------------------
183   // -- Set up global state vector Q
184   Vec Q;
185   PetscCall(DMCreateGlobalVector(dm, &Q));
186   PetscCall(VecZeroEntries(Q));
187 
188   // -- Set up local state vectors Q_loc, Q_dot_loc
189   PetscCall(DMCreateLocalVector(dm, &user->Q_loc));
190   PetscCall(DMCreateLocalVector(dm, &user->Q_dot_loc));
191   PetscCall(VecZeroEntries(user->Q_dot_loc));
192 
193   // ---------------------------------------------------------------------------
194   // Set up libCEED
195   // ---------------------------------------------------------------------------
196   // -- Set up libCEED objects
197   PetscCall(SetupLibceed(ceed, ceed_data, dm, user, app_ctx, problem, bc));
198 
199   // ---------------------------------------------------------------------------
200   // Set up ICs
201   // ---------------------------------------------------------------------------
202   // -- Fix multiplicity for ICs
203   PetscCall(ICs_FixMultiplicity(dm, ceed_data, user, user->Q_loc, Q, 0.0));
204 
205   // ---------------------------------------------------------------------------
206   // Record boundary values from initial condition
207   // ---------------------------------------------------------------------------
208   // -- This overrides DMPlexInsertBoundaryValues().
209   //    We use this for the main simulation DM because the reference DMPlexInsertBoundaryValues() is very slow on the GPU due to extra device-to-host
210   //    communication. If we disable this, we should still get the same results due to the problem->bc function, but with potentially much slower
211   //    execution.
212   if (problem->set_bc_from_ics) {
213     PetscCall(SetBCsFromICs(dm, Q, user->Q_loc));
214   }
215 
216   // ---------------------------------------------------------------------------
217   // Create output directory
218   // ---------------------------------------------------------------------------
219   PetscMPIInt rank;
220   MPI_Comm_rank(comm, &rank);
221   if (!rank) {
222     PetscCall(PetscMkdir(app_ctx->output_dir));
223   }
224 
225   // ---------------------------------------------------------------------------
226   // Gather initial Q values in case of continuation of simulation
227   // ---------------------------------------------------------------------------
228   // -- Set up initial values from binary file
229   if (app_ctx->cont_steps) {
230     PetscViewer viewer;
231 
232     PetscCall(PetscViewerBinaryOpen(comm, app_ctx->cont_file, FILE_MODE_READ, &viewer));
233     PetscCall(HoneeLoadBinaryVec(viewer, Q, &app_ctx->cont_time, &app_ctx->cont_steps));
234     PetscCall(PetscViewerDestroy(&viewer));
235   }
236 
237   // -- Zero Q_loc
238   PetscCall(VecZeroEntries(user->Q_loc));
239 
240   // ---------------------------------------------------------------------------
241   // TS: Create, setup, and solve
242   // ---------------------------------------------------------------------------
243   TS          ts;
244   PetscScalar final_time;
245   PetscCall(TSSolve_NS(dm, user, app_ctx, phys_ctx, problem, &Q, &final_time, &ts));
246 
247   // ---------------------------------------------------------------------------
248   // Post-processing
249   // ---------------------------------------------------------------------------
250   PetscCall(PostProcess(ts, ceed_data, dm, problem, user, Q, final_time));
251 
252   // ---------------------------------------------------------------------------
253   // Destroy libCEED objects
254   // ---------------------------------------------------------------------------
255 
256   PetscCall(TurbulenceStatisticsDestroy(user, ceed_data));
257   PetscCall(NodalProjectionDataDestroy(user->grad_velo_proj));
258   PetscCall(SgsDDDataDestroy(user->sgs_dd_data));
259   PetscCall(DifferentialFilterDataDestroy(user->diff_filter));
260   PetscCall(SGS_DD_TrainingDataDestroy(user->sgs_dd_train));
261   PetscCall(SmartSimDataDestroy(user->smartsim));
262   PetscCall(QDataClearStoredData());
263   PetscCall(DivDiffFluxProjectionDataDestroy(user->diff_flux_proj));
264 
265   // -- Vectors
266   PetscCallCeed(ceed, CeedVectorDestroy(&ceed_data->x_coord));
267   PetscCallCeed(ceed, CeedVectorDestroy(&user->q_ceed));
268   PetscCallCeed(ceed, CeedVectorDestroy(&user->q_dot_ceed));
269   PetscCallCeed(ceed, CeedVectorDestroy(&user->g_ceed));
270 
271   // -- Bases
272   PetscCallCeed(ceed, CeedBasisDestroy(&ceed_data->basis_q));
273   PetscCallCeed(ceed, CeedBasisDestroy(&ceed_data->basis_x));
274 
275   // -- Restrictions
276   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&ceed_data->elem_restr_q));
277   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&ceed_data->elem_restr_x));
278 
279   // Destroy QFunction contexts after using
280   // ToDo: Simplify tracked libCEED objects, smaller struct
281   {
282     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_inflow.qfctx));
283     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_inflow_jacobian.qfctx));
284     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_outflow.qfctx));
285     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_outflow_jacobian.qfctx));
286     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_freestream.qfctx));
287     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_freestream_jacobian.qfctx));
288     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_slip.qfctx));
289     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_slip_jacobian.qfctx));
290     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->ics.qfctx));
291     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_vol_rhs.qfctx));
292     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_vol_ifunction.qfctx));
293     PetscCallCeed(ceed, CeedQFunctionContextDestroy(&problem->apply_vol_ijacobian.qfctx));
294   }
295 
296   // -- Operators
297   PetscCall(OperatorApplyContextDestroy(ceed_data->op_ics_ctx));
298   PetscCall(OperatorApplyContextDestroy(user->op_rhs_ctx));
299   PetscCall(OperatorApplyContextDestroy(user->op_strong_bc_ctx));
300   PetscCallCeed(ceed, CeedOperatorDestroy(&user->op_ifunction));
301 
302   // -- Ceed
303   PetscCheck(CeedDestroy(&ceed) == CEED_ERROR_SUCCESS, comm, PETSC_ERR_LIB, "Destroying Ceed object failed");
304 
305   if (app_ctx->test_type != TESTTYPE_NONE) {
306     PetscInt num_options_left = 0;
307     PetscCall(PetscOptionsLeftGet(NULL, &num_options_left, NULL, NULL));
308     PetscCheck(num_options_left == 0, PETSC_COMM_WORLD, -1,
309                "There are unused options. This is not allowed. See error message for the unused options (or use -options_left directly)");
310   }
311 
312   // ---------------------------------------------------------------------------
313   // Clean up PETSc
314   // ---------------------------------------------------------------------------
315   // -- Vectors
316   PetscCall(VecDestroy(&Q));
317   PetscCall(VecDestroy(&user->Q_loc));
318   PetscCall(VecDestroy(&user->Q_dot_loc));
319 
320   PetscCall(KSPDestroy(&user->mass_ksp));
321 
322   // -- Matrices
323   PetscCall(MatDestroy(&user->interp_viz));
324   PetscCall(MatDestroy(&user->mat_ijacobian));
325 
326   // -- DM
327   PetscCall(DMDestroy(&dm));
328   PetscCall(DMDestroy(&user->dm_viz));
329 
330   // -- TS
331   PetscCall(TSDestroy(&ts));
332 
333   // -- Function list
334   PetscCall(PetscFunctionListDestroy(&app_ctx->problems));
335 
336   PetscCall(PetscFree(app_ctx->amat_type));
337   PetscCall(PetscFree(app_ctx->wall_forces.walls));
338   PetscCall(PetscViewerDestroy(&app_ctx->wall_forces.viewer));
339   PetscCall(PetscViewerDestroy(&app_ctx->turb_spanstats_viewer));
340 
341   // -- Structs
342   for (PetscInt i = 0; i < problem->num_bc_defs; i++) {
343     PetscCall(BCDefinitionDestroy(&problem->bc_defs[i]));
344   }
345   PetscCall(PetscFree(problem->bc_defs));
346   PetscCall(PetscFree(units));
347   PetscCall(PetscFree(user));
348   PetscCall(PetscFree(problem));
349   PetscCall(PetscFree(bc));
350   PetscCall(PetscFree(phys_ctx));
351   PetscCall(PetscFree(app_ctx));
352   PetscCall(PetscFree(ceed_data));
353   PetscCall(PetscFree(problem));
354 
355   return PetscFinalize();
356 }
357