xref: /honee/src/smartsim/sgs_dd_training.c (revision 39169b57ea5b8520c0a1d3c604c014ada276509a)
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   DM                   dm_dd_training;
13   PetscInt             num_comp_dd_inputs, write_data_interval, num_filter_widths;
14   PetscScalar          filter_widths[16];
15   OperatorApplyContext op_training_data_calc_ctx;
16   NodalProjectionData  filtered_grad_velo_proj;
17   size_t               training_data_array_dims[2];
18   PetscBool            overwrite_training_data;
19 } *SGS_DD_TrainingData;
20 
21 #define SGS_DD_TRAIN_KEY "SGS Data Driven Training"
22 
23 PetscErrorCode SGS_DD_TrainingDataDestroy(SGS_DD_TrainingData *sgs_dd_train) {
24   SGS_DD_TrainingData sgs_dd_train_ = *sgs_dd_train;
25 
26   PetscFunctionBeginUser;
27   if (!sgs_dd_train_) PetscFunctionReturn(PETSC_SUCCESS);
28   PetscCall(OperatorApplyContextDestroy(sgs_dd_train_->op_training_data_calc_ctx));
29   PetscCall(NodalProjectionDataDestroy(&sgs_dd_train_->filtered_grad_velo_proj));
30   PetscCall(DMDestroy(&sgs_dd_train_->dm_dd_training));
31   PetscCall(PetscFree(sgs_dd_train));
32   PetscFunctionReturn(PETSC_SUCCESS);
33 }
34 
35 typedef struct {
36   CeedElemRestriction  elem_restr_grid_aniso;
37   CeedVector           grid_aniso_ceed;
38   CeedQFunctionContext sgs_dd_train_qfctx;
39 } *SGS_DD_TrainingSetupData;
40 
41 static PetscErrorCode SGS_DD_TrainingSetupDataDestroy(SGS_DD_TrainingSetupData sgs_dd_train_setup_data) {
42   Ceed ceed;
43 
44   PetscFunctionBeginUser;
45   PetscCall(CeedElemRestrictionGetCeed(sgs_dd_train_setup_data->elem_restr_grid_aniso, &ceed));
46 
47   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&sgs_dd_train_setup_data->elem_restr_grid_aniso));
48   PetscCallCeed(ceed, CeedVectorDestroy(&sgs_dd_train_setup_data->grid_aniso_ceed));
49   PetscCallCeed(ceed, CeedQFunctionContextDestroy(&sgs_dd_train_setup_data->sgs_dd_train_qfctx));
50   PetscCall(PetscFree(sgs_dd_train_setup_data));
51   PetscCheck(CeedDestroy(&ceed) == CEED_ERROR_SUCCESS, PETSC_COMM_SELF, PETSC_ERR_LIB, "Destroying Ceed object failed");
52   PetscFunctionReturn(PETSC_SUCCESS);
53 }
54 
55 // @brief Create DM for storing data-drive SGS model inputs
56 static PetscErrorCode SGS_DD_TrainingCreateDM(DM dm_source, DM *dm_dd_training, PetscInt degree, PetscInt q_extra, PetscInt *num_components) {
57   PetscSection section;
58 
59   PetscFunctionBeginUser;
60   *num_components = 12;
61 
62   PetscCall(DMClone(dm_source, dm_dd_training));
63   PetscCall(DMSetMatrixPreallocateSkip(*dm_dd_training, PETSC_TRUE));
64   PetscCall(PetscObjectSetName((PetscObject)*dm_dd_training, "Data-Driven SGS Training Data"));
65 
66   PetscCall(DMSetupByOrder_FEM(PETSC_TRUE, PETSC_TRUE, degree, 1, q_extra, 1, num_components, *dm_dd_training));
67 
68   PetscCall(DMGetLocalSection(*dm_dd_training, &section));
69   PetscCall(PetscSectionSetFieldName(section, 0, "Data-Driven SGS Training Data"));
70   PetscCall(PetscSectionSetComponentName(section, 0, 0, "SGSInput1"));
71   PetscCall(PetscSectionSetComponentName(section, 0, 1, "SGSInput2"));
72   PetscCall(PetscSectionSetComponentName(section, 0, 2, "SGSInput3"));
73   PetscCall(PetscSectionSetComponentName(section, 0, 3, "SGSInput4"));
74   PetscCall(PetscSectionSetComponentName(section, 0, 4, "SGSInput5"));
75   PetscCall(PetscSectionSetComponentName(section, 0, 5, "SGSInput6"));
76   PetscCall(PetscSectionSetComponentName(section, 0, 6, "FilteredSGSXX"));
77   PetscCall(PetscSectionSetComponentName(section, 0, 7, "FilteredSGSYY"));
78   PetscCall(PetscSectionSetComponentName(section, 0, 8, "FilteredSGSZZ"));
79   PetscCall(PetscSectionSetComponentName(section, 0, 9, "FilteredSGSYZ"));
80   PetscCall(PetscSectionSetComponentName(section, 0, 10, "FilteredSGSXZ"));
81   PetscCall(PetscSectionSetComponentName(section, 0, 11, "FilteredSGSXY"));
82   PetscFunctionReturn(PETSC_SUCCESS);
83 };
84 
85 // @brief Create CeedOperator to calculate training data for data-drive SGS model at nodes
86 static PetscErrorCode SetupTrainingDataCalculation(Ceed ceed, Honee honee, ProblemData problem, SGS_DD_TrainingSetupData sgs_dd_train_setup_data) {
87   SGS_DD_TrainingData sgs_dd_train;
88   CeedQFunction       qf_sgs_dd_train;
89   CeedOperator        op_sgs_dd_train;
90   CeedInt             num_comp_grad_velo, num_comp_grid_aniso;
91   CeedVector          inv_multiplicity, filtered_fields;
92   CeedElemRestriction elem_restr_inv_multiplicity, elem_restr_grad_velo, elem_restr_sgs_train;
93   DMLabel             domain_label = NULL;
94   PetscInt            label_value = 0, height = 0, dm_field = 0;
95 
96   PetscFunctionBeginUser;
97   PetscCall(PetscObjectContainerQuery((PetscObject)honee, SGS_DD_TRAIN_KEY, &sgs_dd_train));
98   PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(sgs_dd_train_setup_data->elem_restr_grid_aniso, &num_comp_grid_aniso));
99 
100   PetscCall(DMPlexCeedElemRestrictionCreate(ceed, sgs_dd_train->dm_dd_training, domain_label, label_value, height, dm_field, &elem_restr_sgs_train));
101   PetscCall(GetInverseMultiplicity(ceed, sgs_dd_train->dm_dd_training, domain_label, label_value, height, dm_field, PETSC_TRUE,
102                                    &elem_restr_inv_multiplicity, &inv_multiplicity));
103 
104   CeedElemRestriction elem_restr_filtered_state;
105   CeedInt             num_comp_filtered_state;
106   {  // -- Setup filtered velocity gradient projection
107     CeedBasis         basis_filtered_state;
108     CeedOperatorField op_field;
109     PetscCallCeed(ceed, CeedOperatorGetFieldByName(honee->diff_filter->op_rhs_ctx->op, "v0", &op_field));
110     PetscCallCeed(ceed, CeedOperatorFieldGetData(op_field, NULL, &elem_restr_filtered_state, &basis_filtered_state, NULL));
111     PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(elem_restr_filtered_state, &num_comp_filtered_state));
112     PetscCall(VelocityGradientProjectionSetup(ceed, honee, problem, STATEVAR_PRIMITIVE, elem_restr_filtered_state, basis_filtered_state,
113                                               &sgs_dd_train->filtered_grad_velo_proj));
114     PetscCallCeed(ceed, CeedBasisDestroy(&basis_filtered_state));
115     // Get velocity gradient information
116     PetscCallCeed(ceed, CeedOperatorGetFieldByName(sgs_dd_train->filtered_grad_velo_proj->l2_rhs_ctx->op, "velocity gradient", &op_field));
117     PetscCallCeed(ceed, CeedOperatorFieldGetElemRestriction(op_field, &elem_restr_grad_velo));
118     PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(elem_restr_grad_velo, &num_comp_grad_velo));
119   }
120 
121   CeedElemRestriction elem_restr_filtered_velo_prod;
122   CeedInt             num_comp_filtered_velo_prod;
123   {  // Get filtered velocity product information
124     CeedOperatorField op_field;
125     PetscCallCeed(ceed, CeedOperatorGetFieldByName(honee->diff_filter->op_rhs_ctx->op, "v1", &op_field));
126     PetscCallCeed(ceed, CeedOperatorFieldGetElemRestriction(op_field, &elem_restr_filtered_velo_prod));
127     PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(elem_restr_filtered_velo_prod, &num_comp_filtered_velo_prod));
128   }
129 
130   // -- Create operator for generating training data at nodes
131   // Differential Filter only provides filtered primitive variables
132   PetscCallCeed(ceed, CeedQFunctionCreateInterior(ceed, 1, ComputeSGS_DDAnisotropicTrainingDataNodal_Prim,
133                                                   ComputeSGS_DDAnisotropicTrainingDataNodal_Prim_loc, &qf_sgs_dd_train));
134 
135   PetscCallCeed(ceed, CeedQFunctionSetContext(qf_sgs_dd_train, sgs_dd_train_setup_data->sgs_dd_train_qfctx));
136   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "q", num_comp_filtered_state, CEED_EVAL_NONE));
137   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "velocity product", num_comp_filtered_velo_prod, CEED_EVAL_NONE));
138   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "gradient velocity", num_comp_grad_velo, CEED_EVAL_NONE));
139   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "anisotropy tensor", num_comp_grid_aniso, CEED_EVAL_NONE));
140   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "inverse multiplicity", 1, CEED_EVAL_NONE));
141   PetscCallCeed(ceed, CeedQFunctionAddOutput(qf_sgs_dd_train, "training data", sgs_dd_train->num_comp_dd_inputs, CEED_EVAL_NONE));
142 
143   PetscCallCeed(ceed, CeedElemRestrictionCreateVector(elem_restr_filtered_state, &filtered_fields, NULL));
144   PetscCallCeed(ceed, CeedOperatorCreate(ceed, qf_sgs_dd_train, NULL, NULL, &op_sgs_dd_train));
145   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "q", elem_restr_filtered_state, CEED_BASIS_NONE, filtered_fields));
146   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "velocity product", elem_restr_filtered_velo_prod, CEED_BASIS_NONE, filtered_fields));
147   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "gradient velocity", elem_restr_grad_velo, CEED_BASIS_NONE, CEED_VECTOR_ACTIVE));
148   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "anisotropy tensor", sgs_dd_train_setup_data->elem_restr_grid_aniso, CEED_BASIS_NONE,
149                                            sgs_dd_train_setup_data->grid_aniso_ceed));
150   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "inverse multiplicity", elem_restr_inv_multiplicity, CEED_BASIS_NONE, inv_multiplicity));
151   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "training data", elem_restr_sgs_train, CEED_BASIS_NONE, CEED_VECTOR_ACTIVE));
152 
153   PetscCall(OperatorApplyContextCreate(sgs_dd_train->filtered_grad_velo_proj->dm, sgs_dd_train->dm_dd_training, ceed, op_sgs_dd_train, NULL, NULL,
154                                        NULL, NULL, &sgs_dd_train->op_training_data_calc_ctx));
155 
156   PetscCallCeed(ceed, CeedVectorDestroy(&inv_multiplicity));
157   PetscCallCeed(ceed, CeedVectorDestroy(&filtered_fields));
158   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&elem_restr_inv_multiplicity));
159   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&elem_restr_filtered_state));
160   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&elem_restr_grad_velo));
161   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&elem_restr_filtered_velo_prod));
162   PetscCallCeed(ceed, CeedQFunctionDestroy(&qf_sgs_dd_train));
163   PetscCallCeed(ceed, CeedOperatorDestroy(&op_sgs_dd_train));
164   PetscFunctionReturn(PETSC_SUCCESS);
165 }
166 
167 PetscErrorCode SGS_DD_TrainingSetup(Ceed ceed, Honee honee, ProblemData problem) {
168   SGS_DDTrainingContext    sgsdd_train_qfctx;
169   SGS_DD_TrainingSetupData sgs_dd_train_setup_data;
170   SGS_DD_TrainingData      sgs_dd_train;
171 
172   PetscFunctionBeginUser;
173   if (!honee->diff_filter) PetscCall(DifferentialFilterSetup(ceed, honee, problem));
174   if (!honee->smartsim) PetscCall(SmartSimSetup(honee));
175 
176   PetscCall(PetscNew(&sgsdd_train_qfctx));
177   PetscCall(PetscNew(&sgs_dd_train_setup_data));
178   PetscCall(PetscNew(&sgs_dd_train));
179   PetscCall(PetscObjectContainerCompose((PetscObject)honee, SGS_DD_TRAIN_KEY, sgs_dd_train, (PetscCtxDestroyFn *)SGS_DD_TrainingDataDestroy));
180 
181   sgs_dd_train->overwrite_training_data = PETSC_TRUE;
182   sgs_dd_train->write_data_interval     = 1;
183   sgs_dd_train->num_filter_widths       = sizeof(sgs_dd_train->filter_widths) / sizeof(sgs_dd_train->filter_widths[0]);
184   PetscOptionsBegin(honee->comm, NULL, "SGS Data-Driven Training Options", NULL);
185   PetscCall(PetscOptionsInt("-sgs_train_write_data_interval", "Number of timesteps between writing data into database", NULL,
186                             sgs_dd_train->write_data_interval, &sgs_dd_train->write_data_interval, NULL));
187   PetscCall(PetscOptionsBool("-sgs_train_overwrite_data", "Overwrite old training data in the database", NULL, sgs_dd_train->overwrite_training_data,
188                              &sgs_dd_train->overwrite_training_data, NULL));
189   PetscCall(PetscOptionsRealArray("-sgs_train_filter_width_scales", "Scales of each filter width put into training database", NULL,
190                                   sgs_dd_train->filter_widths, &sgs_dd_train->num_filter_widths, NULL));
191   PetscOptionsEnd();
192 
193   // -- Create DM for storing training data
194   PetscCall(SGS_DD_TrainingCreateDM(honee->dm, &sgs_dd_train->dm_dd_training, honee->app_ctx->degree, honee->app_ctx->q_extra,
195                                     &sgs_dd_train->num_comp_dd_inputs));
196 
197   {  // -- Create QFunction Context
198     NewtonianIdealGasContext gas;
199     PetscCallCeed(ceed, CeedQFunctionContextGetDataRead(problem->apply_vol_ifunction.qfctx, CEED_MEM_HOST, &gas));
200     sgsdd_train_qfctx->gas = *gas;
201     PetscCallCeed(ceed, CeedQFunctionContextRestoreDataRead(problem->apply_vol_ifunction.qfctx, &gas));
202     PetscCallCeed(ceed, CeedQFunctionContextCreate(honee->ceed, &sgs_dd_train_setup_data->sgs_dd_train_qfctx));
203     PetscCallCeed(ceed, CeedQFunctionContextSetData(sgs_dd_train_setup_data->sgs_dd_train_qfctx, CEED_MEM_HOST, CEED_USE_POINTER,
204                                                     sizeof(*sgsdd_train_qfctx), sgsdd_train_qfctx));
205     PetscCallCeed(ceed, CeedQFunctionContextSetDataDestroy(sgs_dd_train_setup_data->sgs_dd_train_qfctx, CEED_MEM_HOST, FreeContextPetsc));
206   }
207 
208   {  // -- Send training data array info to SmartRedis database
209     PetscMPIInt  rank, num_ranks;
210     SmartSimData smartsim = honee->smartsim;
211     PetscCallMPI(MPI_Comm_rank(honee->comm, &rank));
212     PetscCallMPI(MPI_Comm_size(honee->comm, &num_ranks));
213 
214     {
215       PetscSection global_section;
216       PetscInt     num_dofs, num_comps, local_min_max[2] = {0.}, global_min_max[2] = {0.};
217 
218       PetscCall(DMGetGlobalSection(sgs_dd_train->dm_dd_training, &global_section));
219       PetscCall(DMGetGlobalVectorInfo(sgs_dd_train->dm_dd_training, &num_dofs, NULL, NULL));
220       PetscCall(PetscSectionGetFieldComponents(global_section, 0, &num_comps));
221       local_min_max[0] = num_dofs;
222       PetscCall(PetscGlobalMinMaxInt(honee->comm, local_min_max, global_min_max));
223 
224       sgs_dd_train->training_data_array_dims[0] = global_min_max[0] / num_comps;
225       sgs_dd_train->training_data_array_dims[1] = num_comps;
226     }
227 
228     if (rank % smartsim->collocated_database_num_ranks == 0) {
229       {  // Communicate info on simulation size
230         const char tensor_name[]  = "sizeInfo";
231         size_t     array_info_dim = 6;
232         PetscInt64 array_info[6] = {0}, num_features = 6;
233 
234         array_info[0] = sgs_dd_train->training_data_array_dims[0];
235         array_info[1] = sgs_dd_train->training_data_array_dims[1];
236         array_info[2] = num_features;
237         array_info[3] = num_ranks;
238         array_info[4] = smartsim->collocated_database_num_ranks;
239         array_info[5] = rank;
240 
241         PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
242         PetscCallSmartRedis(
243             put_tensor(smartsim->client, tensor_name, strlen(tensor_name), array_info, &array_info_dim, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
244         PetscCall(SmartRedisVerifyPutTensor(smartsim->client, tensor_name, strlen(tensor_name)));
245         PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
246       }
247 
248       {  // Send array that communicates if tensors are overwritten in database
249         const char tensor_name[]       = "tensor-ow";
250         PetscInt64 tensor_overwrite[2] = {sgs_dd_train->overwrite_training_data};
251         size_t     dim_2[1]            = {2};
252 
253         PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
254         PetscCallSmartRedis(
255             put_tensor(smartsim->client, tensor_name, strlen(tensor_name), tensor_overwrite, dim_2, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
256         PetscCall(SmartRedisVerifyPutTensor(smartsim->client, tensor_name, strlen(tensor_name)));
257         PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
258       }
259 
260       {  // Communicate number of filter widths used
261         const char tensor_name[]     = "num_filter_widths";
262         PetscInt64 num_filter_widths = sgs_dd_train->num_filter_widths;
263         size_t     dim_2             = 1;
264 
265         PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
266         PetscCallSmartRedis(
267             put_tensor(smartsim->client, tensor_name, strlen(tensor_name), &num_filter_widths, &dim_2, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
268         PetscCall(SmartRedisVerifyPutTensor(smartsim->client, tensor_name, strlen(tensor_name)));
269         PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
270       }
271     }
272   }
273 
274   // -- Compute and store anisotropy tensor
275   PetscCall(GridAnisotropyTensorProjectionSetupApply(ceed, honee, &sgs_dd_train_setup_data->elem_restr_grid_aniso,
276                                                      &sgs_dd_train_setup_data->grid_aniso_ceed));
277 
278   // -- Create Nodal Evaluation Operator
279   PetscCall(SetupTrainingDataCalculation(ceed, honee, problem, sgs_dd_train_setup_data));
280 
281   PetscCall(SGS_DD_TrainingSetupDataDestroy(sgs_dd_train_setup_data));
282   PetscFunctionReturn(PETSC_SUCCESS);
283 }
284 
285 PetscErrorCode TSMonitor_SGS_DD_Training(TS ts, PetscInt step_num, PetscReal solution_time, Vec Q, void *ctx) {
286   Honee               honee = (Honee)ctx;
287   Ceed                ceed  = honee->ceed;
288   SGS_DD_TrainingData sgs_dd_train;
289   SmartSimData        smartsim = honee->smartsim;
290   Vec                 TrainingData;
291   PetscMPIInt         rank;
292 
293   PetscFunctionBeginUser;
294   PetscCall(PetscObjectContainerQuery((PetscObject)honee, SGS_DD_TRAIN_KEY, &sgs_dd_train));
295   PetscCallMPI(MPI_Comm_rank(honee->comm, &rank));
296 
297   if (step_num % sgs_dd_train->write_data_interval != 0) PetscFunctionReturn(PETSC_SUCCESS);
298   PetscCall(DMGetGlobalVector(sgs_dd_train->dm_dd_training, &TrainingData));
299 
300   for (PetscInt filter_index = 0; filter_index < sgs_dd_train->num_filter_widths; filter_index++) {
301     PetscCall(PetscLogEventBegin(HONEE_TrainDataCompute, 0, 0, 0, 0));
302     {  // -- Compute and assemble training data
303       Vec          FilteredVelocityGradient, FilteredFields, FilteredFields_loc;
304       PetscMemType filtered_fields_mem_type;
305       CeedVector   filtered_fields;
306 
307       {  // Set filter width for the current solve
308         double       filter_width_scaling[3];
309         CeedOperator op_mat;
310         Mat          A_mat;
311 
312         for (int j = 0; j < 3; j++) filter_width_scaling[j] = sgs_dd_train->filter_widths[filter_index];
313         PetscCall(KSPGetOperators(honee->diff_filter->ksp, &A_mat, NULL));
314         PetscCall(MatCeedGetCeedOperators(A_mat, &op_mat, NULL));
315         PetscCall(CeedOperatorSetContextDouble(op_mat, honee->diff_filter->filter_width_scaling_label, filter_width_scaling));
316       }
317 
318       PetscCall(DMGetGlobalVector(honee->diff_filter->dm_filter, &FilteredFields));
319       PetscCall(DMGetLocalVector(honee->diff_filter->dm_filter, &FilteredFields_loc));
320 
321       PetscCall(DifferentialFilterApply(honee, solution_time, Q, FilteredFields));
322       PetscCall(DMGlobalToLocal(honee->diff_filter->dm_filter, FilteredFields, INSERT_VALUES, FilteredFields_loc));
323 
324       PetscCall(DMGetGlobalVector(sgs_dd_train->filtered_grad_velo_proj->dm, &FilteredVelocityGradient));
325       PetscCall(VelocityGradientProjectionApply(sgs_dd_train->filtered_grad_velo_proj, FilteredFields_loc, FilteredVelocityGradient));
326 
327       {
328         CeedOperatorField op_field;
329 
330         PetscCallCeed(ceed, CeedOperatorGetFieldByName(sgs_dd_train->op_training_data_calc_ctx->op, "q", &op_field));
331         PetscCallCeed(ceed, CeedOperatorFieldGetVector(op_field, &filtered_fields));
332       }
333 
334       PetscCall(VecPetscToCeed(FilteredFields_loc, &filtered_fields_mem_type, filtered_fields));  // filtered_fields is an implicit input
335       PetscCall(ApplyCeedOperatorGlobalToGlobal(FilteredVelocityGradient, TrainingData, sgs_dd_train->op_training_data_calc_ctx));
336       PetscCall(VecCeedToPetsc(filtered_fields, filtered_fields_mem_type, FilteredFields_loc));
337 
338       PetscCall(DMRestoreGlobalVector(sgs_dd_train->filtered_grad_velo_proj->dm, &FilteredVelocityGradient));
339       PetscCall(DMRestoreGlobalVector(honee->diff_filter->dm_filter, &FilteredFields));
340       PetscCall(DMRestoreLocalVector(honee->diff_filter->dm_filter, &FilteredFields_loc));
341       PetscCallCeed(ceed, CeedVectorDestroy(&filtered_fields));
342     }
343     PetscCall(PetscLogEventEnd(HONEE_TrainDataCompute, 0, 0, 0, 0));
344 
345     {  // -- Send training data to SmartSim
346       char   array_key[PETSC_MAX_PATH_LEN];
347       size_t array_key_len;
348 
349       if (sgs_dd_train->overwrite_training_data) {
350         PetscCall(PetscSNPrintf(array_key, sizeof array_key, "%s.%" PetscInt_FMT, smartsim->rank_id_name, filter_index));
351       } else {
352         PetscCall(PetscSNPrintf(array_key, sizeof array_key, "%s.%" PetscInt_FMT "%" PetscInt_FMT, smartsim->rank_id_name, step_num, filter_index));
353       }
354       PetscCall(PetscStrlen(array_key, &array_key_len));
355 
356       {
357         const PetscScalar *training_data;
358         PetscCall(VecGetArrayRead(TrainingData, &training_data));
359         PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Train, 0, 0, 0, 0));
360         PetscCallSmartRedis(put_tensor(smartsim->client, array_key, array_key_len, (void *)training_data, sgs_dd_train->training_data_array_dims, 2,
361                                        SRTensorTypeDouble, SRMemLayoutContiguous));
362         PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Train, 0, 0, 0, 0));
363         PetscCall(VecRestoreArrayRead(TrainingData, &training_data));
364       }
365     }
366   }
367 
368   if (rank % smartsim->collocated_database_num_ranks == 0) {
369     const char tensor_name[] = "step";
370     size_t     dim_2[1]      = {2};
371     PetscInt64 step_array[2] = {step_num, step_num};
372 
373     PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
374     PetscCallSmartRedis(
375         put_tensor(smartsim->client, tensor_name, strlen(tensor_name), step_array, dim_2, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
376     PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
377   }
378 
379   PetscCall(DMRestoreGlobalVector(sgs_dd_train->dm_dd_training, &TrainingData));
380   PetscFunctionReturn(PETSC_SUCCESS);
381 }
382 
383 PetscErrorCode TSPostStep_SGS_DD_Training(TS ts) {
384   Honee        honee;
385   const char   check_run_key[]   = "check-run";
386   PetscReal    check_run[2]      = {1};
387   const size_t check_run_dims[1] = {2};
388   size_t       check_run_key_size;
389 
390   PetscFunctionBeginUser;
391   PetscCall(PetscStrlen(check_run_key, &check_run_key_size));
392   PetscCall(TSGetApplicationContext(ts, &honee));
393   SmartSimData smartsim = honee->smartsim;
394 
395   PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
396   PetscCallSmartRedis(
397       unpack_tensor(smartsim->client, check_run_key, check_run_key_size, check_run, check_run_dims, 1, SRTensorTypeDouble, SRMemLayoutContiguous));
398   PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
399   if (check_run[0] == 0) {
400     PetscCall(PetscPrintf(honee->comm, "-- Simulation stopped by 'check-run' tensor in Redis database\n"));
401     PetscCall(TSSetConvergedReason(ts, TS_CONVERGED_USER));
402   }
403 
404   PetscFunctionReturn(PETSC_SUCCESS);
405 }
406