xref: /honee/src/smartsim/sgs_dd_training.c (revision 0c608af58d6c66f4fcbe6fff5e0f907584234584)
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 <differential_filter.h>
7 #include <navierstokes.h>
8 #include <petscdmplex.h>
9 #include <smartsim-impl.h>
10 
11 typedef struct SGS_DD_TrainingData_ *SGS_DD_TrainingData;
12 struct SGS_DD_TrainingData_ {
13   DM                   dm_dd_training;
14   PetscInt             num_comp_dd_inputs, write_data_interval, num_filter_widths;
15   PetscScalar          filter_widths[16];
16   OperatorApplyContext op_training_data_calc_ctx;
17   DiffFilterData       diff_filter;
18   NodalProjectionData  filtered_grad_velo_proj;
19   size_t               training_data_array_dims[2];
20   PetscBool            overwrite_training_data;
21 };
22 
23 #define SGS_DD_TRAIN_KEY "SGS Data Driven Training"
24 
25 static PetscErrorCode SGS_DD_TrainingDataDestroy(SGS_DD_TrainingData *sgs_dd_train) {
26   SGS_DD_TrainingData sgs_dd_train_ = *sgs_dd_train;
27 
28   PetscFunctionBeginUser;
29   if (!sgs_dd_train_) PetscFunctionReturn(PETSC_SUCCESS);
30   PetscCall(OperatorApplyContextDestroy(sgs_dd_train_->op_training_data_calc_ctx));
31   PetscCall(NodalProjectionDataDestroy(&sgs_dd_train_->filtered_grad_velo_proj));
32   PetscCall(DMDestroy(&sgs_dd_train_->dm_dd_training));
33   PetscCall(DifferentialFilterDataDestroy(&sgs_dd_train_->diff_filter));
34   PetscCall(PetscFree(sgs_dd_train_));
35   *sgs_dd_train = NULL;
36   PetscFunctionReturn(PETSC_SUCCESS);
37 }
38 
39 typedef struct {
40   CeedElemRestriction  elem_restr_grid_aniso;
41   CeedVector           grid_aniso_ceed;
42   CeedQFunctionContext sgs_dd_train_qfctx;
43 } *SGS_DD_TrainingSetupData;
44 
45 static PetscErrorCode SGS_DD_TrainingSetupDataDestroy(SGS_DD_TrainingSetupData sgs_dd_train_setup_data) {
46   Ceed ceed;
47 
48   PetscFunctionBeginUser;
49   PetscCall(CeedElemRestrictionGetCeed(sgs_dd_train_setup_data->elem_restr_grid_aniso, &ceed));
50 
51   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&sgs_dd_train_setup_data->elem_restr_grid_aniso));
52   PetscCallCeed(ceed, CeedVectorDestroy(&sgs_dd_train_setup_data->grid_aniso_ceed));
53   PetscCallCeed(ceed, CeedQFunctionContextDestroy(&sgs_dd_train_setup_data->sgs_dd_train_qfctx));
54   PetscCall(PetscFree(sgs_dd_train_setup_data));
55   PetscCheck(CeedDestroy(&ceed) == CEED_ERROR_SUCCESS, PETSC_COMM_SELF, PETSC_ERR_LIB, "Destroying Ceed object failed");
56   PetscFunctionReturn(PETSC_SUCCESS);
57 }
58 
59 // @brief Create DM for storing data-drive SGS model inputs
60 static PetscErrorCode SGS_DD_TrainingCreateDM(DM dm_source, DM *dm_dd_training, PetscInt degree, PetscInt q_extra, PetscInt *num_components) {
61   PetscSection section;
62 
63   PetscFunctionBeginUser;
64   *num_components = 12;
65 
66   PetscCall(DMClone(dm_source, dm_dd_training));
67   PetscCall(DMSetMatrixPreallocateSkip(*dm_dd_training, PETSC_TRUE));
68   PetscCall(PetscObjectSetName((PetscObject)*dm_dd_training, "Data-Driven SGS Training Data"));
69 
70   PetscCall(DMSetupByOrder_FEM(PETSC_TRUE, PETSC_TRUE, degree, 1, q_extra, 1, num_components, *dm_dd_training));
71 
72   PetscCall(DMGetLocalSection(*dm_dd_training, &section));
73   PetscCall(PetscSectionSetFieldName(section, 0, "Data-Driven SGS Training Data"));
74   PetscCall(PetscSectionSetComponentName(section, 0, 0, "SGSInput1"));
75   PetscCall(PetscSectionSetComponentName(section, 0, 1, "SGSInput2"));
76   PetscCall(PetscSectionSetComponentName(section, 0, 2, "SGSInput3"));
77   PetscCall(PetscSectionSetComponentName(section, 0, 3, "SGSInput4"));
78   PetscCall(PetscSectionSetComponentName(section, 0, 4, "SGSInput5"));
79   PetscCall(PetscSectionSetComponentName(section, 0, 5, "SGSInput6"));
80   PetscCall(PetscSectionSetComponentName(section, 0, 6, "FilteredSGSXX"));
81   PetscCall(PetscSectionSetComponentName(section, 0, 7, "FilteredSGSYY"));
82   PetscCall(PetscSectionSetComponentName(section, 0, 8, "FilteredSGSZZ"));
83   PetscCall(PetscSectionSetComponentName(section, 0, 9, "FilteredSGSYZ"));
84   PetscCall(PetscSectionSetComponentName(section, 0, 10, "FilteredSGSXZ"));
85   PetscCall(PetscSectionSetComponentName(section, 0, 11, "FilteredSGSXY"));
86   PetscFunctionReturn(PETSC_SUCCESS);
87 };
88 
89 // @brief Create CeedOperator to calculate training data for data-drive SGS model at nodes
90 static PetscErrorCode SetupTrainingDataCalculation(Ceed ceed, Honee honee, ProblemData problem, SGS_DD_TrainingSetupData sgs_dd_train_setup_data) {
91   SGS_DD_TrainingData sgs_dd_train;
92   CeedQFunction       qf_sgs_dd_train;
93   CeedOperator        op_sgs_dd_train;
94   CeedInt             num_comp_grad_velo, num_comp_grid_aniso;
95   CeedVector          inv_multiplicity, filtered_fields;
96   CeedElemRestriction elem_restr_inv_multiplicity, elem_restr_grad_velo, elem_restr_sgs_train;
97   DMLabel             domain_label = NULL;
98   PetscInt            label_value = 0, height = 0, dm_field = 0;
99 
100   PetscFunctionBeginUser;
101   PetscCall(HoneeGetContainer(honee, SGS_DD_TRAIN_KEY, &sgs_dd_train));
102   PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(sgs_dd_train_setup_data->elem_restr_grid_aniso, &num_comp_grid_aniso));
103 
104   PetscCall(DMPlexCeedElemRestrictionCreate(ceed, sgs_dd_train->dm_dd_training, domain_label, label_value, height, dm_field, &elem_restr_sgs_train));
105   PetscCall(GetInverseMultiplicity(ceed, sgs_dd_train->dm_dd_training, domain_label, label_value, height, dm_field, PETSC_TRUE,
106                                    &elem_restr_inv_multiplicity, &inv_multiplicity));
107 
108   CeedElemRestriction elem_restr_filtered_state;
109   CeedInt             num_comp_filtered_state;
110   {  // -- Setup filtered velocity gradient projection
111     CeedBasis         basis_filtered_state;
112     CeedOperatorField op_field;
113     PetscCallCeed(ceed, CeedOperatorGetFieldByName(sgs_dd_train->diff_filter->op_rhs_ctx->op, "v0", &op_field));
114     PetscCallCeed(ceed, CeedOperatorFieldGetData(op_field, NULL, &elem_restr_filtered_state, &basis_filtered_state, NULL));
115     PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(elem_restr_filtered_state, &num_comp_filtered_state));
116     PetscCall(VelocityGradientProjectionSetup(ceed, honee, problem, STATEVAR_PRIMITIVE, elem_restr_filtered_state, basis_filtered_state,
117                                               &sgs_dd_train->filtered_grad_velo_proj));
118     PetscCallCeed(ceed, CeedBasisDestroy(&basis_filtered_state));
119     // Get velocity gradient information
120     PetscCallCeed(ceed, CeedOperatorGetFieldByName(sgs_dd_train->filtered_grad_velo_proj->l2_rhs_ctx->op, "velocity gradient", &op_field));
121     PetscCallCeed(ceed, CeedOperatorFieldGetElemRestriction(op_field, &elem_restr_grad_velo));
122     PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(elem_restr_grad_velo, &num_comp_grad_velo));
123   }
124 
125   CeedElemRestriction elem_restr_filtered_velo_prod;
126   CeedInt             num_comp_filtered_velo_prod;
127   {  // Get filtered velocity product information
128     CeedOperatorField op_field;
129     PetscCallCeed(ceed, CeedOperatorGetFieldByName(sgs_dd_train->diff_filter->op_rhs_ctx->op, "v1", &op_field));
130     PetscCallCeed(ceed, CeedOperatorFieldGetElemRestriction(op_field, &elem_restr_filtered_velo_prod));
131     PetscCallCeed(ceed, CeedElemRestrictionGetNumComponents(elem_restr_filtered_velo_prod, &num_comp_filtered_velo_prod));
132   }
133 
134   // -- Create operator for generating training data at nodes
135   // Differential Filter only provides filtered primitive variables
136   PetscCallCeed(ceed, CeedQFunctionCreateInterior(ceed, 1, ComputeSGS_DDAnisotropicTrainingDataNodal_Prim,
137                                                   ComputeSGS_DDAnisotropicTrainingDataNodal_Prim_loc, &qf_sgs_dd_train));
138 
139   PetscCallCeed(ceed, CeedQFunctionSetContext(qf_sgs_dd_train, sgs_dd_train_setup_data->sgs_dd_train_qfctx));
140   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "q", num_comp_filtered_state, CEED_EVAL_NONE));
141   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "velocity product", num_comp_filtered_velo_prod, CEED_EVAL_NONE));
142   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "gradient velocity", num_comp_grad_velo, CEED_EVAL_NONE));
143   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "anisotropy tensor", num_comp_grid_aniso, CEED_EVAL_NONE));
144   PetscCallCeed(ceed, CeedQFunctionAddInput(qf_sgs_dd_train, "inverse multiplicity", 1, CEED_EVAL_NONE));
145   PetscCallCeed(ceed, CeedQFunctionAddOutput(qf_sgs_dd_train, "training data", sgs_dd_train->num_comp_dd_inputs, CEED_EVAL_NONE));
146 
147   PetscCallCeed(ceed, CeedElemRestrictionCreateVector(elem_restr_filtered_state, &filtered_fields, NULL));
148   PetscCallCeed(ceed, CeedOperatorCreate(ceed, qf_sgs_dd_train, NULL, NULL, &op_sgs_dd_train));
149   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "q", elem_restr_filtered_state, CEED_BASIS_NONE, filtered_fields));
150   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "velocity product", elem_restr_filtered_velo_prod, CEED_BASIS_NONE, filtered_fields));
151   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "gradient velocity", elem_restr_grad_velo, CEED_BASIS_NONE, CEED_VECTOR_ACTIVE));
152   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "anisotropy tensor", sgs_dd_train_setup_data->elem_restr_grid_aniso, CEED_BASIS_NONE,
153                                            sgs_dd_train_setup_data->grid_aniso_ceed));
154   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "inverse multiplicity", elem_restr_inv_multiplicity, CEED_BASIS_NONE, inv_multiplicity));
155   PetscCallCeed(ceed, CeedOperatorSetField(op_sgs_dd_train, "training data", elem_restr_sgs_train, CEED_BASIS_NONE, CEED_VECTOR_ACTIVE));
156 
157   PetscCall(OperatorApplyContextCreate(sgs_dd_train->filtered_grad_velo_proj->dm, sgs_dd_train->dm_dd_training, ceed, op_sgs_dd_train, NULL, NULL,
158                                        NULL, NULL, &sgs_dd_train->op_training_data_calc_ctx));
159 
160   PetscCallCeed(ceed, CeedVectorDestroy(&inv_multiplicity));
161   PetscCallCeed(ceed, CeedVectorDestroy(&filtered_fields));
162   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&elem_restr_inv_multiplicity));
163   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&elem_restr_filtered_state));
164   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&elem_restr_grad_velo));
165   PetscCallCeed(ceed, CeedElemRestrictionDestroy(&elem_restr_filtered_velo_prod));
166   PetscCallCeed(ceed, CeedQFunctionDestroy(&qf_sgs_dd_train));
167   PetscCallCeed(ceed, CeedOperatorDestroy(&op_sgs_dd_train));
168   PetscFunctionReturn(PETSC_SUCCESS);
169 }
170 
171 PetscErrorCode SGS_DD_TrainingSetup(Ceed ceed, Honee honee) {
172   SGS_DDTrainingContext    sgsdd_train_ctx;
173   SGS_DD_TrainingSetupData sgs_dd_train_setup_data;
174   SGS_DD_TrainingData      sgs_dd_train;
175   ProblemData              problem = honee->problem_data;
176 
177   PetscFunctionBeginUser;
178 
179   PetscCall(PetscNew(&sgsdd_train_ctx));
180   PetscCall(PetscNew(&sgs_dd_train_setup_data));
181   PetscCall(PetscNew(&sgs_dd_train));
182   *sgs_dd_train = (struct SGS_DD_TrainingData_){
183       .overwrite_training_data = PETSC_TRUE,
184       .write_data_interval     = 1,
185       .num_filter_widths       = sizeof(sgs_dd_train->filter_widths) / sizeof(sgs_dd_train->filter_widths[0]),
186   };
187   PetscCall(HoneeSetContainer(honee, SGS_DD_TRAIN_KEY, sgs_dd_train, (PetscCtxDestroyFn *)SGS_DD_TrainingDataDestroy));
188   PetscCall(DifferentialFilterSetup(honee, &sgs_dd_train->diff_filter));
189 
190   PetscOptionsBegin(honee->comm, NULL, "SGS Data-Driven Training Options", NULL);
191   PetscCall(PetscOptionsInt("-sgs_train_write_data_interval", "Number of timesteps between writing data into database", NULL,
192                             sgs_dd_train->write_data_interval, &sgs_dd_train->write_data_interval, NULL));
193   PetscCall(PetscOptionsBool("-sgs_train_overwrite_data", "Overwrite old training data in the database", NULL, sgs_dd_train->overwrite_training_data,
194                              &sgs_dd_train->overwrite_training_data, NULL));
195   PetscCall(PetscOptionsRealArray("-sgs_train_filter_width_scales", "Scales of each filter width put into training database", NULL,
196                                   sgs_dd_train->filter_widths, &sgs_dd_train->num_filter_widths, NULL));
197   PetscOptionsEnd();
198 
199   // -- Create DM for storing training data
200   PetscCall(SGS_DD_TrainingCreateDM(honee->dm, &sgs_dd_train->dm_dd_training, honee->app_ctx->degree, honee->app_ctx->q_extra,
201                                     &sgs_dd_train->num_comp_dd_inputs));
202 
203   {  // -- Create QFunction Context
204     NewtonianIdealGasContext newt_ctx;
205     PetscCallCeed(ceed, CeedQFunctionContextGetDataRead(problem->apply_vol_ifunction.qfctx, CEED_MEM_HOST, &newt_ctx));
206     sgsdd_train_ctx->newt_ctx = *newt_ctx;
207     PetscCallCeed(ceed, CeedQFunctionContextRestoreDataRead(problem->apply_vol_ifunction.qfctx, &newt_ctx));
208     PetscCallCeed(ceed, CeedQFunctionContextCreate(honee->ceed, &sgs_dd_train_setup_data->sgs_dd_train_qfctx));
209     PetscCallCeed(ceed, CeedQFunctionContextSetData(sgs_dd_train_setup_data->sgs_dd_train_qfctx, CEED_MEM_HOST, CEED_USE_POINTER,
210                                                     sizeof(*sgsdd_train_ctx), sgsdd_train_ctx));
211     PetscCallCeed(ceed, CeedQFunctionContextSetDataDestroy(sgs_dd_train_setup_data->sgs_dd_train_qfctx, CEED_MEM_HOST, FreeContextPetsc));
212   }
213 
214   {  // -- Send training data array info to SmartRedis database
215     PetscMPIInt  rank, num_ranks;
216     SmartSimData smartsim;
217     PetscCall(HoneeGetSmartSimData(honee, &smartsim));
218     PetscCallMPI(MPI_Comm_rank(honee->comm, &rank));
219     PetscCallMPI(MPI_Comm_size(honee->comm, &num_ranks));
220 
221     {
222       PetscSection global_section;
223       PetscInt     num_dofs, num_comps, local_min_max[2] = {0.}, global_min_max[2] = {0.};
224 
225       PetscCall(DMGetGlobalSection(sgs_dd_train->dm_dd_training, &global_section));
226       PetscCall(DMGetGlobalVectorInfo(sgs_dd_train->dm_dd_training, &num_dofs, NULL, NULL));
227       PetscCall(PetscSectionGetFieldComponents(global_section, 0, &num_comps));
228       local_min_max[0] = num_dofs;
229       PetscCall(PetscGlobalMinMaxInt(honee->comm, local_min_max, global_min_max));
230 
231       sgs_dd_train->training_data_array_dims[0] = global_min_max[0] / num_comps;
232       sgs_dd_train->training_data_array_dims[1] = num_comps;
233     }
234 
235     if (rank % smartsim->collocated_database_num_ranks == 0) {
236       {  // Communicate info on simulation size
237         const char tensor_name[]  = "sizeInfo";
238         size_t     array_info_dim = 6;
239         PetscInt64 array_info[6] = {0}, num_features = 6;
240 
241         array_info[0] = sgs_dd_train->training_data_array_dims[0];
242         array_info[1] = sgs_dd_train->training_data_array_dims[1];
243         array_info[2] = num_features;
244         array_info[3] = num_ranks;
245         array_info[4] = smartsim->collocated_database_num_ranks;
246         array_info[5] = rank;
247 
248         PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
249         PetscCallSmartRedis(
250             put_tensor(smartsim->client, tensor_name, strlen(tensor_name), array_info, &array_info_dim, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
251         PetscCall(SmartRedisVerifyPutTensor(smartsim->client, tensor_name, strlen(tensor_name)));
252         PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
253       }
254 
255       {  // Send array that communicates if tensors are overwritten in database
256         const char tensor_name[]       = "tensor-ow";
257         PetscInt64 tensor_overwrite[2] = {sgs_dd_train->overwrite_training_data};
258         size_t     dim_2[1]            = {2};
259 
260         PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
261         PetscCallSmartRedis(
262             put_tensor(smartsim->client, tensor_name, strlen(tensor_name), tensor_overwrite, dim_2, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
263         PetscCall(SmartRedisVerifyPutTensor(smartsim->client, tensor_name, strlen(tensor_name)));
264         PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
265       }
266 
267       {  // Communicate number of filter widths used
268         const char tensor_name[]     = "num_filter_widths";
269         PetscInt64 num_filter_widths = sgs_dd_train->num_filter_widths;
270         size_t     dim_2             = 1;
271 
272         PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
273         PetscCallSmartRedis(
274             put_tensor(smartsim->client, tensor_name, strlen(tensor_name), &num_filter_widths, &dim_2, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
275         PetscCall(SmartRedisVerifyPutTensor(smartsim->client, tensor_name, strlen(tensor_name)));
276         PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
277       }
278     }
279   }
280 
281   // -- Compute and store anisotropy tensor
282   PetscCall(GridAnisotropyTensorProjectionSetupApply(ceed, honee, &sgs_dd_train_setup_data->elem_restr_grid_aniso,
283                                                      &sgs_dd_train_setup_data->grid_aniso_ceed));
284 
285   // -- Create Nodal Evaluation Operator
286   PetscCall(SetupTrainingDataCalculation(ceed, honee, problem, sgs_dd_train_setup_data));
287 
288   PetscCall(SGS_DD_TrainingSetupDataDestroy(sgs_dd_train_setup_data));
289   PetscFunctionReturn(PETSC_SUCCESS);
290 }
291 
292 PetscErrorCode TSMonitor_SGS_DD_Training(TS ts, PetscInt step_num, PetscReal solution_time, Vec Q, void *ctx) {
293   Honee               honee = (Honee)ctx;
294   Ceed                ceed  = honee->ceed;
295   SGS_DD_TrainingData sgs_dd_train;
296   SmartSimData        smartsim;
297   Vec                 TrainingData;
298   PetscMPIInt         rank;
299 
300   PetscFunctionBeginUser;
301   PetscCall(HoneeGetSmartSimData(honee, &smartsim));
302   PetscCall(HoneeGetContainer(honee, SGS_DD_TRAIN_KEY, &sgs_dd_train));
303   PetscCallMPI(MPI_Comm_rank(honee->comm, &rank));
304 
305   if (step_num % sgs_dd_train->write_data_interval != 0) PetscFunctionReturn(PETSC_SUCCESS);
306   PetscCall(DMGetGlobalVector(sgs_dd_train->dm_dd_training, &TrainingData));
307 
308   for (PetscInt filter_index = 0; filter_index < sgs_dd_train->num_filter_widths; filter_index++) {
309     PetscCall(PetscLogEventBegin(HONEE_TrainDataCompute, 0, 0, 0, 0));
310     {  // -- Compute and assemble training data
311       Vec          FilteredVelocityGradient, FilteredFields, FilteredFields_loc;
312       PetscMemType filtered_fields_mem_type;
313       CeedVector   filtered_fields;
314 
315       {  // Set filter width for the current solve
316         double       filter_width_scaling[3];
317         CeedOperator op_mat;
318         Mat          A_mat;
319 
320         for (int j = 0; j < 3; j++) filter_width_scaling[j] = sgs_dd_train->filter_widths[filter_index];
321         PetscCall(KSPGetOperators(sgs_dd_train->diff_filter->ksp, &A_mat, NULL));
322         PetscCall(MatCeedGetCeedOperators(A_mat, &op_mat, NULL));
323         PetscCall(CeedOperatorSetContextDouble(op_mat, sgs_dd_train->diff_filter->filter_width_scaling_label, filter_width_scaling));
324       }
325 
326       PetscCall(DMGetGlobalVector(sgs_dd_train->diff_filter->dm_filter, &FilteredFields));
327       PetscCall(DMGetLocalVector(sgs_dd_train->diff_filter->dm_filter, &FilteredFields_loc));
328 
329       PetscCall(DifferentialFilterApply(honee, sgs_dd_train->diff_filter, solution_time, Q, FilteredFields));
330       PetscCall(DMGlobalToLocal(sgs_dd_train->diff_filter->dm_filter, FilteredFields, INSERT_VALUES, FilteredFields_loc));
331 
332       PetscCall(DMGetGlobalVector(sgs_dd_train->filtered_grad_velo_proj->dm, &FilteredVelocityGradient));
333       PetscCall(VelocityGradientProjectionApply(sgs_dd_train->filtered_grad_velo_proj, FilteredFields_loc, FilteredVelocityGradient));
334 
335       {
336         CeedOperatorField op_field;
337 
338         PetscCallCeed(ceed, CeedOperatorGetFieldByName(sgs_dd_train->op_training_data_calc_ctx->op, "q", &op_field));
339         PetscCallCeed(ceed, CeedOperatorFieldGetVector(op_field, &filtered_fields));
340       }
341 
342       PetscCall(VecPetscToCeed(FilteredFields_loc, &filtered_fields_mem_type, filtered_fields));  // filtered_fields is an implicit input
343       PetscCall(ApplyCeedOperatorGlobalToGlobal(FilteredVelocityGradient, TrainingData, sgs_dd_train->op_training_data_calc_ctx));
344       PetscCall(VecCeedToPetsc(filtered_fields, filtered_fields_mem_type, FilteredFields_loc));
345 
346       PetscCall(DMRestoreGlobalVector(sgs_dd_train->filtered_grad_velo_proj->dm, &FilteredVelocityGradient));
347       PetscCall(DMRestoreGlobalVector(sgs_dd_train->diff_filter->dm_filter, &FilteredFields));
348       PetscCall(DMRestoreLocalVector(sgs_dd_train->diff_filter->dm_filter, &FilteredFields_loc));
349       PetscCallCeed(ceed, CeedVectorDestroy(&filtered_fields));
350     }
351     PetscCall(PetscLogEventEnd(HONEE_TrainDataCompute, 0, 0, 0, 0));
352 
353     {  // -- Send training data to SmartSim
354       char   array_key[PETSC_MAX_PATH_LEN];
355       size_t array_key_len;
356 
357       if (sgs_dd_train->overwrite_training_data) {
358         PetscCall(PetscSNPrintf(array_key, sizeof array_key, "%s.%" PetscInt_FMT, smartsim->rank_id_name, filter_index));
359       } else {
360         PetscCall(PetscSNPrintf(array_key, sizeof array_key, "%s.%" PetscInt_FMT "%" PetscInt_FMT, smartsim->rank_id_name, step_num, filter_index));
361       }
362       PetscCall(PetscStrlen(array_key, &array_key_len));
363 
364       {
365         const PetscScalar *training_data;
366         PetscCall(VecGetArrayRead(TrainingData, &training_data));
367         PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Write, 0, 0, 0, 0));
368         PetscCallSmartRedis(put_tensor(smartsim->client, array_key, array_key_len, (void *)training_data, sgs_dd_train->training_data_array_dims, 2,
369                                        SRTensorTypeDouble, SRMemLayoutContiguous));
370         PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Write, 0, 0, 0, 0));
371         PetscCall(VecRestoreArrayRead(TrainingData, &training_data));
372       }
373     }
374   }
375 
376   if (rank % smartsim->collocated_database_num_ranks == 0) {
377     const char tensor_name[] = "step";
378     size_t     dim_2[1]      = {2};
379     PetscInt64 step_array[2] = {step_num, step_num};
380 
381     PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
382     PetscCallSmartRedis(
383         put_tensor(smartsim->client, tensor_name, strlen(tensor_name), step_array, dim_2, 1, SRTensorTypeInt64, SRMemLayoutContiguous));
384     PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
385   }
386 
387   PetscCall(DMRestoreGlobalVector(sgs_dd_train->dm_dd_training, &TrainingData));
388   PetscFunctionReturn(PETSC_SUCCESS);
389 }
390 
391 PetscErrorCode TSPostStep_SGS_DD_Training(TS ts) {
392   Honee        honee;
393   const char   check_run_key[]   = "check-run";
394   PetscReal    check_run[2]      = {1};
395   const size_t check_run_dims[1] = {2};
396   size_t       check_run_key_size;
397   SmartSimData smartsim;
398 
399   PetscFunctionBeginUser;
400   PetscCall(PetscStrlen(check_run_key, &check_run_key_size));
401   PetscCall(TSGetApplicationContext(ts, &honee));
402   PetscCall(HoneeGetSmartSimData(honee, &smartsim));
403 
404   PetscCall(PetscLogEventBegin(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
405   PetscCallSmartRedis(
406       unpack_tensor(smartsim->client, check_run_key, check_run_key_size, check_run, check_run_dims, 1, SRTensorTypeDouble, SRMemLayoutContiguous));
407   PetscCall(PetscLogEventEnd(HONEE_SmartRedis_Meta, 0, 0, 0, 0));
408   if (check_run[0] == 0) {
409     PetscCall(PetscPrintf(honee->comm, "-- Simulation stopped by 'check-run' tensor in Redis database\n"));
410     PetscCall(TSSetConvergedReason(ts, TS_CONVERGED_USER));
411   }
412 
413   PetscFunctionReturn(PETSC_SUCCESS);
414 }
415