xref: /honee/src/smartsim/sgs_dd_training.c (revision 8a8cb6e06ce4728cc6d80ca92f8de31da49852e5)
1 // SPDX-FileCopyrightText: Copyright (c) 2017-2024, HONEE contributors.
2 // SPDX-License-Identifier: Apache-2.0 OR BSD-2-Clause
3 
4 #include "../../qfunctions/sgs_dd_training.h"
5 
6 #include <petscdmplex.h>
7 
8 #include <navierstokes.h>
9 #include <smartsim.h>
10 
11 typedef struct {
12   CeedElemRestriction  elem_restr_grid_aniso;
13   CeedVector           grid_aniso_ceed;
14   CeedQFunctionContext sgs_dd_train_qfctx;
15 } *SGS_DD_TrainingSetupData;
16 
17 static PetscErrorCode SGS_DD_TrainingSetupDataDestroy(SGS_DD_TrainingSetupData sgs_dd_train_setup_data) {
18   Ceed ceed;
19 
20   PetscFunctionBeginUser;
21   PetscCall(CeedElemRestrictionGetCeed(sgs_dd_train_setup_data->elem_restr_grid_aniso, &ceed));
22 
23   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&sgs_dd_train_setup_data->elem_restr_grid_aniso));
24   PetscCallCeed(ceed, CeedVectorDestroy(&sgs_dd_train_setup_data->grid_aniso_ceed));
25   PetscCallCeed(ceed, CeedQFunctionContextDestroy(&sgs_dd_train_setup_data->sgs_dd_train_qfctx));
26   PetscCall(PetscFree(sgs_dd_train_setup_data));
27   PetscFunctionReturn(PETSC_SUCCESS);
28 }
29 
30 // @brief Create DM for storing data-drive SGS model inputs
31 static PetscErrorCode SGS_DD_TrainingCreateDM(DM dm_source, DM *dm_dd_training, PetscInt degree, PetscInt q_extra, PetscInt *num_components) {
32   PetscSection section;
33 
34   PetscFunctionBeginUser;
35   *num_components = 12;
36 
37   PetscCall(DMClone(dm_source, dm_dd_training));
38   PetscCall(PetscObjectSetName((PetscObject)*dm_dd_training, "Data-Driven SGS Training Data"));
39 
40   PetscCall(DMSetupByOrder_FEM(PETSC_TRUE, PETSC_TRUE, degree, 1, q_extra, 1, num_components, *dm_dd_training));
41 
42   PetscCall(DMGetLocalSection(*dm_dd_training, &section));
43   PetscCall(PetscSectionSetFieldName(section, 0, "Data-Driven SGS Training Data"));
44   PetscCall(PetscSectionSetComponentName(section, 0, 0, "SGSInput1"));
45   PetscCall(PetscSectionSetComponentName(section, 0, 1, "SGSInput2"));
46   PetscCall(PetscSectionSetComponentName(section, 0, 2, "SGSInput3"));
47   PetscCall(PetscSectionSetComponentName(section, 0, 3, "SGSInput4"));
48   PetscCall(PetscSectionSetComponentName(section, 0, 4, "SGSInput5"));
49   PetscCall(PetscSectionSetComponentName(section, 0, 5, "SGSInput6"));
50   PetscCall(PetscSectionSetComponentName(section, 0, 6, "FilteredSGSXX"));
51   PetscCall(PetscSectionSetComponentName(section, 0, 7, "FilteredSGSYY"));
52   PetscCall(PetscSectionSetComponentName(section, 0, 8, "FilteredSGSZZ"));
53   PetscCall(PetscSectionSetComponentName(section, 0, 9, "FilteredSGSYZ"));
54   PetscCall(PetscSectionSetComponentName(section, 0, 10, "FilteredSGSXZ"));
55   PetscCall(PetscSectionSetComponentName(section, 0, 11, "FilteredSGSXY"));
56   PetscFunctionReturn(PETSC_SUCCESS);
57 };
58 
59 // @brief Create CeedOperator to calculate training data for data-drive SGS model at nodes
60 static PetscErrorCode SetupTrainingDataCalculation(Ceed ceed, User user, CeedData ceed_data, ProblemData problem,
61                                                    SGS_DD_TrainingSetupData sgs_dd_train_setup_data) {
62   SGS_DD_TrainingData sgs_dd_train = user->sgs_dd_train;
63   CeedQFunction       qf_sgs_dd_train;
64   CeedOperator        op_sgs_dd_train;
65   CeedInt             num_comp_grad_velo, num_comp_grid_aniso;
66   CeedVector          inv_multiplicity, filtered_fields;
67   CeedElemRestriction elem_restr_inv_multiplicity, elem_restr_grad_velo, elem_restr_sgs_train;
68   DMLabel             domain_label = NULL;
69   PetscInt            label_value = 0, height = 0, dm_field = 0;
70 
71   PetscFunctionBeginUser;
72   PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(sgs_dd_train_setup_data->elem_restr_grid_aniso, &num_comp_grid_aniso));
73 
74   PetscCall(DMPlexCeedElemRestrictionCreate(ceed, sgs_dd_train->dm_dd_training, domain_label, label_value, height, dm_field, &elem_restr_sgs_train));
75   PetscCall(GetInverseMultiplicity(ceed, sgs_dd_train->dm_dd_training, domain_label, label_value, height, dm_field, PETSC_TRUE,
76                                    &elem_restr_inv_multiplicity, &inv_multiplicity));
77 
78   CeedElemRestriction elem_restr_filtered_state;
79   CeedInt             num_comp_filtered_state;
80   {  // -- Setup filtered velocity gradient projection
81     CeedBasis         basis_filtered_state;
82     CeedOperatorField op_field;
83     PetscCallCeed(ceed, CeedOperatorGetFieldByName(user->diff_filter->op_rhs_ctx->op, "v0", &op_field));
84     PetscCallCeed(ceed, CeedOperatorFieldGetElemRestriction(op_field, &elem_restr_filtered_state));
85     PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(elem_restr_filtered_state, &num_comp_filtered_state));
86     PetscCallCeed(ceed, CeedOperatorFieldGetBasis(op_field, &basis_filtered_state));
87     PetscCall(VelocityGradientProjectionSetup(ceed, user, ceed_data, problem, STATEVAR_PRIMITIVE, elem_restr_filtered_state, basis_filtered_state,
88                                               &sgs_dd_train->filtered_grad_velo_proj));
89     // Get velocity gradient information
90     PetscCallCeed(ceed, CeedOperatorGetFieldByName(sgs_dd_train->filtered_grad_velo_proj->l2_rhs_ctx->op, "velocity gradient", &op_field));
91     PetscCallCeed(ceed, CeedOperatorFieldGetElemRestriction(op_field, &elem_restr_grad_velo));
92     PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(elem_restr_grad_velo, &num_comp_grad_velo));
93   }
94 
95   CeedElemRestriction elem_restr_filtered_velo_prod;
96   CeedInt             num_comp_filtered_velo_prod;
97   {  // Get filtered velocity product information
98     CeedOperatorField op_field;
99     PetscCallCeed(ceed, CeedOperatorGetFieldByName(user->diff_filter->op_rhs_ctx->op, "v1", &op_field));
100     PetscCallCeed(ceed, CeedOperatorFieldGetElemRestriction(op_field, &elem_restr_filtered_velo_prod));
101     PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(elem_restr_filtered_velo_prod, &num_comp_filtered_velo_prod));
102   }
103 
104   // -- Create operator for generating training data at nodes
105   // Differential Filter only provides filtered primitive variables
106   PetscCallCeed(ceed, CeedQFunctionCreateInterior(ceed, 1, ComputeSGS_DDAnisotropicTrainingDataNodal_Prim,
107                                                   ComputeSGS_DDAnisotropicTrainingDataNodal_Prim_loc, &qf_sgs_dd_train));
108 
109   PetscCallCeed(ceed, CeedQFunctionSetContext(qf_sgs_dd_train, sgs_dd_train_setup_data->sgs_dd_train_qfctx));
110   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "q", num_comp_filtered_state, CEED_EVAL_NONE));
111   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "velocity product", num_comp_filtered_velo_prod, CEED_EVAL_NONE));
112   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "gradient velocity", num_comp_grad_velo, CEED_EVAL_NONE));
113   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "anisotropy tensor", num_comp_grid_aniso, CEED_EVAL_NONE));
114   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "inverse multiplicity", 1, CEED_EVAL_NONE));
115   PetscCallCeed(ceed, CeedQFunctionAddOutput(qf_sgs_dd_train, "training data", sgs_dd_train->num_comp_dd_inputs, CEED_EVAL_NONE));
116 
117   PetscCallCeed(ceed, CeedElemRestrictionCreateVector(elem_restr_filtered_state, &filtered_fields, NULL));
118   PetscCallCeed(ceed, CeedOperatorCreate(ceed, qf_sgs_dd_train, NULL, NULL, &op_sgs_dd_train));
119   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "q", elem_restr_filtered_state, CEED_BASIS_NONE, filtered_fields));
120   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "velocity product", elem_restr_filtered_velo_prod, CEED_BASIS_NONE, filtered_fields));
121   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "gradient velocity", elem_restr_grad_velo, CEED_BASIS_NONE, CEED_VECTOR_ACTIVE));
122   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "anisotropy tensor", sgs_dd_train_setup_data->elem_restr_grid_aniso, CEED_BASIS_NONE,
123                                            sgs_dd_train_setup_data->grid_aniso_ceed));
124   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "inverse multiplicity", elem_restr_inv_multiplicity, CEED_BASIS_NONE, inv_multiplicity));
125   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "training data", elem_restr_sgs_train, CEED_BASIS_NONE, CEED_VECTOR_ACTIVE));
126 
127   PetscCall(OperatorApplyContextCreate(sgs_dd_train->filtered_grad_velo_proj->dm, sgs_dd_train->dm_dd_training, ceed, op_sgs_dd_train, NULL, NULL,
128                                        NULL, NULL, &sgs_dd_train->op_training_data_calc_ctx));
129 
130   PetscCallCeed(ceed, CeedVectorDestroy(&inv_multiplicity));
131   PetscCallCeed(ceed, CeedVectorDestroy(&filtered_fields));
132   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&elem_restr_inv_multiplicity));
133   PetscCallCeed(ceed, CeedQFunctionDestroy(&qf_sgs_dd_train));
134   PetscCallCeed(ceed, CeedOperatorDestroy(&op_sgs_dd_train));
135   PetscFunctionReturn(PETSC_SUCCESS);
136 }
137 
138 PetscErrorCode SGS_DD_TrainingSetup(Ceed ceed, User user, CeedData ceed_data, ProblemData problem) {
139   SGS_DDTrainingContext    sgsdd_train_qfctx;
140   SGS_DD_TrainingSetupData sgs_dd_train_setup_data;
141 
142   PetscFunctionBeginUser;
143   if (!user->diff_filter) PetscCall(DifferentialFilterSetup(ceed, user, ceed_data, problem));
144   if (!user->smartsim) PetscCall(SmartSimSetup(user));
145 
146   PetscCall(PetscNew(&sgsdd_train_qfctx));
147   PetscCall(PetscNew(&sgs_dd_train_setup_data));
148   PetscCall(PetscNew(&user->sgs_dd_train));
149   SGS_DD_TrainingData sgs_dd_train = user->sgs_dd_train;
150 
151   sgs_dd_train->overwrite_training_data = PETSC_TRUE;
152   sgs_dd_train->write_data_interval     = 1;
153   sgs_dd_train->num_filter_widths       = sizeof(sgs_dd_train->filter_widths) / sizeof(sgs_dd_train->filter_widths[0]);
154   PetscOptionsBegin(user->comm, NULL, "SGS Data-Driven Training Options", NULL);
155   PetscCall(PetscOptionsInt("-sgs_train_write_data_interval", "Number of timesteps between writing data into database", NULL,
156                             sgs_dd_train->write_data_interval, &sgs_dd_train->write_data_interval, NULL));
157   PetscCall(PetscOptionsBool("-sgs_train_overwrite_data", "Overwrite old training data in the database", NULL, sgs_dd_train->overwrite_training_data,
158                              &sgs_dd_train->overwrite_training_data, NULL));
159   PetscCall(PetscOptionsRealArray("-sgs_train_filter_width_scales", "Scales of each filter width put into training database", NULL,
160                                   sgs_dd_train->filter_widths, &sgs_dd_train->num_filter_widths, NULL));
161   PetscOptionsEnd();
162 
163   // -- Create DM for storing training data
164   PetscCall(SGS_DD_TrainingCreateDM(user->dm, &sgs_dd_train->dm_dd_training, user->app_ctx->degree, user->app_ctx->q_extra,
165                                     &sgs_dd_train->num_comp_dd_inputs));
166 
167   {  // -- Create QFunction Context
168     NewtonianIdealGasContext gas;
169     PetscCallCeed(ceed, CeedQFunctionContextGetDataRead(problem->apply_vol_ifunction.qfunction_context, CEED_MEM_HOST, &gas));
170     sgsdd_train_qfctx->gas = *gas;
171     PetscCallCeed(ceed, CeedQFunctionContextRestoreDataRead(problem->apply_vol_ifunction.qfunction_context, &gas));
172     PetscCallCeed(ceed, CeedQFunctionContextCreate(user->ceed, &sgs_dd_train_setup_data->sgs_dd_train_qfctx));
173     PetscCallCeed(ceed, CeedQFunctionContextSetData(sgs_dd_train_setup_data->sgs_dd_train_qfctx, CEED_MEM_HOST, CEED_USE_POINTER,
174                                                     sizeof(*sgsdd_train_qfctx), sgsdd_train_qfctx));
175     PetscCallCeed(ceed, CeedQFunctionContextSetDataDestroy(sgs_dd_train_setup_data->sgs_dd_train_qfctx, CEED_MEM_HOST, FreeContextPetsc));
176   }
177 
178   {  // -- Send training data array info to SmartRedis database
179     PetscMPIInt  rank, num_ranks;
180     SmartSimData smartsim = user->smartsim;
181     PetscCallMPI(MPI_Comm_rank(user->comm, &rank));
182     PetscCallMPI(MPI_Comm_size(user->comm, &num_ranks));
183 
184     {
185       PetscSection global_section;
186       PetscInt     num_dofs, num_comps, local_min_max[2] = {0.}, global_min_max[2] = {0.};
187 
188       PetscCall(DMGetGlobalSection(sgs_dd_train->dm_dd_training, &global_section));
189       PetscCall(DMGetGlobalVectorInfo(sgs_dd_train->dm_dd_training, &num_dofs, NULL, NULL));
190       PetscCall(PetscSectionGetFieldComponents(global_section, 0, &num_comps));
191       local_min_max[0] = num_dofs;
192       PetscCall(PetscGlobalMinMaxInt(user->comm, local_min_max, global_min_max));
193 
194       sgs_dd_train->training_data_array_dims[0] = global_min_max[0] / num_comps;
195       sgs_dd_train->training_data_array_dims[1] = num_comps;
196     }
197 
198     if (rank % smartsim->collocated_database_num_ranks == 0) {
199       {  // Communicate info on simulation size
200         const char tensor_name[]  = "sizeInfo";
201         size_t     array_info_dim = 6;
202         PetscInt64 array_info[6] = {0}, num_features = 6;
203 
204         array_info[0] = sgs_dd_train->training_data_array_dims[0];
205         array_info[1] = sgs_dd_train->training_data_array_dims[1];
206         array_info[2] = num_features;
207         array_info[3] = num_ranks;
208         array_info[4] = smartsim->collocated_database_num_ranks;
209         array_info[5] = rank;
210 
211         PetscCall(PetscLogEventBegin(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
212         PetscCallSmartRedis(
213             put_tensor(smartsim->client, tensor_name, strlen(tensor_name), array_info, &array_info_dim, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
214         PetscCall(SmartRedisVerifyPutTensor(smartsim->client, tensor_name, strlen(tensor_name)));
215         PetscCall(PetscLogEventEnd(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
216       }
217 
218       {  // Send array that communicates if tensors are overwritten in database
219         const char tensor_name[]       = "tensor-ow";
220         PetscInt64 tensor_overwrite[2] = {sgs_dd_train->overwrite_training_data};
221         size_t     dim_2[1]            = {2};
222 
223         PetscCall(PetscLogEventBegin(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
224         PetscCallSmartRedis(
225             put_tensor(smartsim->client, tensor_name, strlen(tensor_name), tensor_overwrite, dim_2, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
226         PetscCall(SmartRedisVerifyPutTensor(smartsim->client, tensor_name, strlen(tensor_name)));
227         PetscCall(PetscLogEventEnd(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
228       }
229 
230       {  // Communicate number of filter widths used
231         const char tensor_name[]     = "num_filter_widths";
232         PetscInt64 num_filter_widths = sgs_dd_train->num_filter_widths;
233         size_t     dim_2             = 1;
234 
235         PetscCall(PetscLogEventBegin(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
236         PetscCallSmartRedis(
237             put_tensor(smartsim->client, tensor_name, strlen(tensor_name), &num_filter_widths, &dim_2, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
238         PetscCall(SmartRedisVerifyPutTensor(smartsim->client, tensor_name, strlen(tensor_name)));
239         PetscCall(PetscLogEventEnd(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
240       }
241     }
242   }
243 
244   // -- Compute and store anisotropy tensor
245   PetscCall(GridAnisotropyTensorProjectionSetupApply(ceed, user, ceed_data, &sgs_dd_train_setup_data->elem_restr_grid_aniso,
246                                                      &sgs_dd_train_setup_data->grid_aniso_ceed));
247 
248   // -- Create Nodal Evaluation Operator
249   PetscCall(SetupTrainingDataCalculation(ceed, user, ceed_data, problem, sgs_dd_train_setup_data));
250 
251   PetscCall(SGS_DD_TrainingSetupDataDestroy(sgs_dd_train_setup_data));
252   PetscFunctionReturn(PETSC_SUCCESS);
253 }
254 
255 PetscErrorCode TSMonitor_SGS_DD_Training(TS ts, PetscInt step_num, PetscReal solution_time, Vec Q, void *ctx) {
256   User                user         = (User)ctx;
257   Ceed                ceed         = user->ceed;
258   SGS_DD_TrainingData sgs_dd_train = user->sgs_dd_train;
259   SmartSimData        smartsim     = user->smartsim;
260   Vec                 TrainingData;
261   PetscMPIInt         rank;
262 
263   PetscFunctionBeginUser;
264 
265   PetscCallMPI(MPI_Comm_rank(user->comm, &rank));
266 
267   if (step_num % sgs_dd_train->write_data_interval != 0) PetscFunctionReturn(PETSC_SUCCESS);
268   PetscCall(DMGetGlobalVector(sgs_dd_train->dm_dd_training, &TrainingData));
269 
270   for (PetscInt filter_index = 0; filter_index < sgs_dd_train->num_filter_widths; filter_index++) {
271     PetscCall(PetscLogEventBegin(FLUIDS_TrainDataCompute, 0, 0, 0, 0));
272     {  // -- Compute and assemble training data
273       Vec          FilteredVelocityGradient, FilteredFields, FilteredFields_loc;
274       PetscMemType filtered_fields_mem_type;
275       CeedVector   filtered_fields;
276 
277       {  // Set filter width for the current solve
278         double       filter_width_scaling[3];
279         CeedOperator op_mat;
280         Mat          A_mat;
281 
282         for (int j = 0; j < 3; j++) filter_width_scaling[j] = sgs_dd_train->filter_widths[filter_index];
283         PetscCall(KSPGetOperators(user->diff_filter->ksp, &A_mat, NULL));
284         PetscCall(MatCeedGetCeedOperators(A_mat, &op_mat, NULL));
285         PetscCall(CeedOperatorSetContextDouble(op_mat, user->diff_filter->filter_width_scaling_label, filter_width_scaling));
286       }
287 
288       PetscCall(DMGetGlobalVector(user->diff_filter->dm_filter, &FilteredFields));
289       PetscCall(DMGetLocalVector(user->diff_filter->dm_filter, &FilteredFields_loc));
290 
291       PetscCall(DifferentialFilterApply(user, solution_time, Q, FilteredFields));
292       PetscCall(DMGlobalToLocal(user->diff_filter->dm_filter, FilteredFields, INSERT_VALUES, FilteredFields_loc));
293 
294       PetscCall(DMGetGlobalVector(sgs_dd_train->filtered_grad_velo_proj->dm, &FilteredVelocityGradient));
295       PetscCall(VelocityGradientProjectionApply(sgs_dd_train->filtered_grad_velo_proj, FilteredFields_loc, FilteredVelocityGradient));
296 
297       {
298         CeedOperatorField op_field;
299 
300         PetscCallCeed(ceed, CeedOperatorGetFieldByName(sgs_dd_train->op_training_data_calc_ctx->op, "q", &op_field));
301         PetscCallCeed(ceed, CeedOperatorFieldGetVector(op_field, &filtered_fields));
302       }
303 
304       PetscCall(VecPetscToCeed(FilteredFields_loc, &filtered_fields_mem_type, filtered_fields));  // filtered_fields is an implicit input
305       PetscCall(ApplyCeedOperatorGlobalToGlobal(FilteredVelocityGradient, TrainingData, sgs_dd_train->op_training_data_calc_ctx));
306       PetscCall(VecCeedToPetsc(filtered_fields, filtered_fields_mem_type, FilteredFields_loc));
307 
308       PetscCall(DMRestoreGlobalVector(sgs_dd_train->filtered_grad_velo_proj->dm, &FilteredVelocityGradient));
309       PetscCall(DMRestoreGlobalVector(user->diff_filter->dm_filter, &FilteredFields));
310       PetscCall(DMRestoreLocalVector(user->diff_filter->dm_filter, &FilteredFields_loc));
311     }
312     PetscCall(PetscLogEventEnd(FLUIDS_TrainDataCompute, 0, 0, 0, 0));
313 
314     {  // -- Send training data to SmartSim
315       char   array_key[PETSC_MAX_PATH_LEN];
316       size_t array_key_len;
317 
318       if (sgs_dd_train->overwrite_training_data) {
319         PetscCall(PetscSNPrintf(array_key, sizeof array_key, "%s.%" PetscInt_FMT, smartsim->rank_id_name, filter_index));
320       } else {
321         PetscCall(PetscSNPrintf(array_key, sizeof array_key, "%s.%" PetscInt_FMT "%" PetscInt_FMT, smartsim->rank_id_name, step_num, filter_index));
322       }
323       PetscCall(PetscStrlen(array_key, &array_key_len));
324 
325       {
326         const PetscScalar *training_data;
327         PetscCall(VecGetArrayRead(TrainingData, &training_data));
328         PetscCall(PetscLogEventBegin(FLUIDS_SmartRedis_Train, 0, 0, 0, 0));
329         PetscCallSmartRedis(put_tensor(smartsim->client, array_key, array_key_len, (void *)training_data, sgs_dd_train->training_data_array_dims, 2,
330                                        SRTensorTypeDouble, SRMemLayoutContiguous));
331         PetscCall(PetscLogEventEnd(FLUIDS_SmartRedis_Train, 0, 0, 0, 0));
332         PetscCall(VecRestoreArrayRead(TrainingData, &training_data));
333       }
334     }
335   }
336 
337   if (rank % smartsim->collocated_database_num_ranks == 0) {
338     const char tensor_name[] = "step";
339     size_t     dim_2[1]      = {2};
340     PetscInt64 step_array[2] = {step_num, step_num};
341 
342     PetscCall(PetscLogEventBegin(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
343     PetscCallSmartRedis(
344         put_tensor(smartsim->client, tensor_name, strlen(tensor_name), step_array, dim_2, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
345     PetscCall(PetscLogEventEnd(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
346   }
347 
348   PetscCall(DMRestoreGlobalVector(user->sgs_dd_train->dm_dd_training, &TrainingData));
349   PetscFunctionReturn(PETSC_SUCCESS);
350 }
351 
352 PetscErrorCode TSPostStep_SGS_DD_Training(TS ts) {
353   User         user;
354   const char   check_run_key[]   = "check-run";
355   PetscReal    check_run[2]      = {1};
356   const size_t check_run_dims[1] = {2};
357   size_t       check_run_key_size;
358 
359   PetscFunctionBeginUser;
360   PetscCall(PetscStrlen(check_run_key, &check_run_key_size));
361   PetscCall(TSGetApplicationContext(ts, &user));
362   SmartSimData smartsim = user->smartsim;
363 
364   PetscCall(PetscLogEventBegin(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
365   PetscCallSmartRedis(
366       unpack_tensor(smartsim->client, check_run_key, check_run_key_size, check_run, check_run_dims, 1, SRTensorTypeDouble, SRMemLayoutContiguous));
367   PetscCall(PetscLogEventEnd(FLUIDS_SmartRedis_Meta, 0, 0, 0, 0));
368   if (check_run[0] == 0) {
369     PetscCall(PetscPrintf(user->comm, "-- Simulation stopped by 'check-run' tensor in Redis database\n"));
370     PetscCall(TSSetConvergedReason(ts, TS_CONVERGED_USER));
371   }
372 
373   PetscFunctionReturn(PETSC_SUCCESS);
374 }
375 
376 PetscErrorCode SGS_DD_TrainingDataDestroy(SGS_DD_TrainingData sgs_dd_train) {
377   PetscFunctionBeginUser;
378   if (!sgs_dd_train) PetscFunctionReturn(PETSC_SUCCESS);
379 
380   PetscCall(OperatorApplyContextDestroy(sgs_dd_train->op_training_data_calc_ctx));
381   PetscCall(NodalProjectionDataDestroy(sgs_dd_train->filtered_grad_velo_proj));
382   PetscCall(DMDestroy(&sgs_dd_train->dm_dd_training));
383   PetscCall(PetscFree(sgs_dd_train));
384 
385   PetscFunctionReturn(PETSC_SUCCESS);
386 }
387