1 // SPDX-FileCopyrightText: Copyright (c) 2017-2024, HONEE contributors. 2 // SPDX-License-Identifier: Apache-2.0 OR BSD-2-Clause 3 4 /// @file 5 /// Miscellaneous utility functions 6 7 #include <ceed.h> 8 #include <petscdm.h> 9 #include <petscsf.h> 10 #include <petscts.h> 11 12 #include <navierstokes.h> 13 #include "../qfunctions/mass.h" 14 15 PetscErrorCode ICs_FixMultiplicity(DM dm, CeedData ceed_data, User user, Vec Q_loc, Vec Q, CeedScalar time) { 16 Ceed ceed = user->ceed; 17 CeedVector mult_vec; 18 PetscMemType m_mem_type; 19 Vec Multiplicity, Multiplicity_loc; 20 21 PetscFunctionBeginUser; 22 if (user->phys->ics_time_label) PetscCallCeed(ceed, CeedOperatorSetContextDouble(ceed_data->op_ics_ctx->op, user->phys->ics_time_label, &time)); 23 PetscCall(ApplyCeedOperatorLocalToGlobal(NULL, Q, ceed_data->op_ics_ctx)); 24 25 PetscCallCeed(ceed, CeedElemRestrictionCreateVector(ceed_data->elem_restr_q, &mult_vec, NULL)); 26 27 // -- Get multiplicity 28 PetscCall(DMGetLocalVector(dm, &Multiplicity_loc)); 29 PetscCall(VecPetscToCeed(Multiplicity_loc, &m_mem_type, mult_vec)); 30 PetscCallCeed(ceed, CeedElemRestrictionGetMultiplicity(ceed_data->elem_restr_q, mult_vec)); 31 PetscCall(VecCeedToPetsc(mult_vec, m_mem_type, Multiplicity_loc)); 32 33 PetscCall(DMGetGlobalVector(dm, &Multiplicity)); 34 PetscCall(VecZeroEntries(Multiplicity)); 35 PetscCall(DMLocalToGlobal(dm, Multiplicity_loc, ADD_VALUES, Multiplicity)); 36 37 // -- Fix multiplicity 38 PetscCall(VecPointwiseDivide(Q, Q, Multiplicity)); 39 PetscCall(VecPointwiseDivide(Q_loc, Q_loc, Multiplicity_loc)); 40 41 PetscCall(DMRestoreLocalVector(dm, &Multiplicity_loc)); 42 PetscCall(DMRestoreGlobalVector(dm, &Multiplicity)); 43 PetscCallCeed(ceed, CeedVectorDestroy(&mult_vec)); 44 PetscFunctionReturn(PETSC_SUCCESS); 45 } 46 47 // Record boundary values from initial condition 48 PetscErrorCode SetBCsFromICs(DM dm, Vec Q, Vec Q_loc) { 49 PetscFunctionBeginUser; 50 { // Capture initial condition values in Qbc 51 Vec Qbc; 52 53 PetscCall(DMGetNamedLocalVector(dm, "Qbc", &Qbc)); 54 PetscCall(VecCopy(Q_loc, Qbc)); 55 PetscCall(VecZeroEntries(Q_loc)); 56 PetscCall(DMGlobalToLocal(dm, Q, INSERT_VALUES, Q_loc)); 57 PetscCall(VecAXPY(Qbc, -1., Q_loc)); 58 PetscCall(DMRestoreNamedLocalVector(dm, "Qbc", &Qbc)); 59 } 60 PetscCall(PetscObjectComposeFunction((PetscObject)dm, "DMPlexInsertBoundaryValues_C", DMPlexInsertBoundaryValues_FromICs)); 61 62 { // Set boundary mask to zero out essential BCs 63 Vec boundary_mask, ones; 64 65 PetscCall(DMGetNamedLocalVector(dm, "boundary mask", &boundary_mask)); 66 PetscCall(DMGetGlobalVector(dm, &ones)); 67 PetscCall(VecZeroEntries(boundary_mask)); 68 PetscCall(VecSet(ones, 1.0)); 69 PetscCall(DMGlobalToLocal(dm, ones, INSERT_VALUES, boundary_mask)); 70 PetscCall(DMRestoreNamedLocalVector(dm, "boundary mask", &boundary_mask)); 71 PetscCall(DMRestoreGlobalVector(dm, &ones)); 72 } 73 PetscFunctionReturn(PETSC_SUCCESS); 74 } 75 76 PetscErrorCode DMPlexInsertBoundaryValues_FromICs(DM dm, PetscBool insert_essential, Vec Q_loc, PetscReal time, Vec face_geom_FVM, Vec cell_geom_FVM, 77 Vec grad_FVM) { 78 Vec Qbc, boundary_mask; 79 80 PetscFunctionBeginUser; 81 // Mask (zero) Strong BC entries 82 PetscCall(DMGetNamedLocalVector(dm, "boundary mask", &boundary_mask)); 83 PetscCall(VecPointwiseMult(Q_loc, Q_loc, boundary_mask)); 84 PetscCall(DMRestoreNamedLocalVector(dm, "boundary mask", &boundary_mask)); 85 86 PetscCall(DMGetNamedLocalVector(dm, "Qbc", &Qbc)); 87 PetscCall(VecAXPY(Q_loc, 1., Qbc)); 88 PetscCall(DMRestoreNamedLocalVector(dm, "Qbc", &Qbc)); 89 PetscFunctionReturn(PETSC_SUCCESS); 90 } 91 92 // Compare reference solution values with current test run for CI 93 PetscErrorCode RegressionTest(AppCtx app_ctx, Vec Q) { 94 Vec Qref; 95 PetscViewer viewer; 96 PetscReal error, Qrefnorm; 97 MPI_Comm comm = PetscObjectComm((PetscObject)Q); 98 99 PetscFunctionBeginUser; 100 // Read reference file 101 PetscCall(VecDuplicate(Q, &Qref)); 102 PetscCheck(strcmp(app_ctx->test_file_path, "") != 0, comm, PETSC_ERR_FILE_READ, "File for regression test not given"); 103 PetscCall(PetscViewerBinaryOpen(comm, app_ctx->test_file_path, FILE_MODE_READ, &viewer)); 104 PetscCall(LoadFluidsBinaryVec(comm, viewer, Qref, NULL, NULL)); 105 106 // Compute error with respect to reference solution 107 PetscCall(VecAXPY(Q, -1.0, Qref)); 108 PetscCall(VecNorm(Qref, NORM_MAX, &Qrefnorm)); 109 PetscCall(VecScale(Q, 1. / Qrefnorm)); 110 PetscCall(VecNorm(Q, NORM_MAX, &error)); 111 112 // Check error 113 if (error > app_ctx->test_tol) { 114 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Test failed with error norm %g\n", (double)error)); 115 } 116 117 // Cleanup 118 PetscCall(PetscViewerDestroy(&viewer)); 119 PetscCall(VecDestroy(&Qref)); 120 PetscFunctionReturn(PETSC_SUCCESS); 121 } 122 123 // Get error for problems with exact solutions 124 PetscErrorCode PrintError(CeedData ceed_data, DM dm, User user, Vec Q, PetscScalar final_time) { 125 PetscInt loc_nodes; 126 Vec Q_exact, Q_exact_loc; 127 PetscReal rel_error, norm_error, norm_exact; 128 129 PetscFunctionBeginUser; 130 // Get exact solution at final time 131 PetscCall(DMGetGlobalVector(dm, &Q_exact)); 132 PetscCall(DMGetLocalVector(dm, &Q_exact_loc)); 133 PetscCall(VecGetSize(Q_exact_loc, &loc_nodes)); 134 PetscCall(ICs_FixMultiplicity(dm, ceed_data, user, Q_exact_loc, Q_exact, final_time)); 135 136 // Get |exact solution - obtained solution| 137 PetscCall(VecNorm(Q_exact, NORM_1, &norm_exact)); 138 PetscCall(VecAXPY(Q, -1.0, Q_exact)); 139 PetscCall(VecNorm(Q, NORM_1, &norm_error)); 140 141 rel_error = norm_error / norm_exact; 142 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Relative Error: %g\n", (double)rel_error)); 143 PetscCall(DMRestoreLocalVector(dm, &Q_exact_loc)); 144 PetscCall(DMRestoreGlobalVector(dm, &Q_exact)); 145 PetscFunctionReturn(PETSC_SUCCESS); 146 } 147 148 // Post-processing 149 PetscErrorCode PostProcess(TS ts, CeedData ceed_data, DM dm, ProblemData problem, User user, Vec Q, PetscScalar final_time) { 150 PetscInt steps; 151 TSConvergedReason reason; 152 153 PetscFunctionBeginUser; 154 // Print relative error 155 if (problem->compute_exact_solution_error && user->app_ctx->test_type == TESTTYPE_NONE) { 156 PetscCall(PrintError(ceed_data, dm, user, Q, final_time)); 157 } 158 159 // Print final time and number of steps 160 PetscCall(TSGetStepNumber(ts, &steps)); 161 PetscCall(TSGetConvergedReason(ts, &reason)); 162 if (user->app_ctx->test_type == TESTTYPE_NONE) { 163 PetscCall(PetscPrintf(PETSC_COMM_WORLD, "Time integrator %s on time step %" PetscInt_FMT " with final time %g\n", TSConvergedReasons[reason], 164 steps, (double)final_time)); 165 } 166 167 // Output numerical values from command line 168 PetscCall(VecViewFromOptions(Q, NULL, "-vec_view")); 169 170 // Compare reference solution values with current test run for CI 171 if (user->app_ctx->test_type == TESTTYPE_SOLVER) { 172 PetscCall(RegressionTest(user->app_ctx, Q)); 173 } 174 PetscFunctionReturn(PETSC_SUCCESS); 175 } 176 177 // Gather initial Q values in case of continuation of simulation 178 PetscErrorCode SetupICsFromBinary(MPI_Comm comm, AppCtx app_ctx, Vec Q) { 179 PetscViewer viewer; 180 181 PetscFunctionBeginUser; 182 PetscCall(PetscViewerBinaryOpen(comm, app_ctx->cont_file, FILE_MODE_READ, &viewer)); 183 PetscCall(LoadFluidsBinaryVec(comm, viewer, Q, &app_ctx->cont_time, &app_ctx->cont_steps)); 184 PetscCall(PetscViewerDestroy(&viewer)); 185 PetscFunctionReturn(PETSC_SUCCESS); 186 } 187 188 // Free a plain data context that was allocated using PETSc; returning libCEED error codes 189 int FreeContextPetsc(void *data) { 190 if (PetscFree(data)) return CeedError(NULL, CEED_ERROR_ACCESS, "PetscFree failed"); 191 return CEED_ERROR_SUCCESS; 192 } 193 194 // Return mass qfunction specification for number of components N 195 PetscErrorCode CreateMassQFunction(Ceed ceed, CeedInt N, CeedInt q_data_size, CeedQFunction *qf) { 196 PetscFunctionBeginUser; 197 switch (N) { 198 case 1: 199 PetscCallCeed(ceed, CeedQFunctionCreateInterior(ceed, 1, Mass_1, Mass_1_loc, qf)); 200 break; 201 case 5: 202 PetscCallCeed(ceed, CeedQFunctionCreateInterior(ceed, 1, Mass_5, Mass_5_loc, qf)); 203 break; 204 case 7: 205 PetscCallCeed(ceed, CeedQFunctionCreateInterior(ceed, 1, Mass_7, Mass_7_loc, qf)); 206 break; 207 case 9: 208 PetscCallCeed(ceed, CeedQFunctionCreateInterior(ceed, 1, Mass_9, Mass_9_loc, qf)); 209 break; 210 case 22: 211 PetscCallCeed(ceed, CeedQFunctionCreateInterior(ceed, 1, Mass_22, Mass_22_loc, qf)); 212 break; 213 default: 214 SETERRQ(PETSC_COMM_WORLD, PETSC_ERR_SUP, "Could not find mass qfunction of size %d", N); 215 } 216 217 PetscCallCeed(ceed, CeedQFunctionAddInput(*qf, "u", N, CEED_EVAL_INTERP)); 218 PetscCallCeed(ceed, CeedQFunctionAddInput(*qf, "qdata", q_data_size, CEED_EVAL_NONE)); 219 PetscCallCeed(ceed, CeedQFunctionAddOutput(*qf, "v", N, CEED_EVAL_INTERP)); 220 PetscCallCeed(ceed, CeedQFunctionSetUserFlopsEstimate(*qf, N)); 221 PetscFunctionReturn(PETSC_SUCCESS); 222 } 223 224 PetscErrorCode NodalProjectionDataDestroy(NodalProjectionData context) { 225 PetscFunctionBeginUser; 226 if (context == NULL) PetscFunctionReturn(PETSC_SUCCESS); 227 228 PetscCall(DMDestroy(&context->dm)); 229 PetscCall(KSPDestroy(&context->ksp)); 230 231 PetscCall(OperatorApplyContextDestroy(context->l2_rhs_ctx)); 232 233 PetscCall(PetscFree(context)); 234 PetscFunctionReturn(PETSC_SUCCESS); 235 } 236 237 // Print information about the given simulation run 238 PetscErrorCode PrintRunInfo(User user, Physics phys_ctx, ProblemData problem, TS ts) { 239 Ceed ceed = user->ceed; 240 MPI_Comm comm = PetscObjectComm((PetscObject)ts); 241 242 PetscFunctionBeginUser; 243 // Header and rank 244 char host_name[PETSC_MAX_PATH_LEN]; 245 PetscMPIInt rank, comm_size; 246 PetscCall(PetscGetHostName(host_name, sizeof host_name)); 247 PetscCallMPI(MPI_Comm_rank(comm, &rank)); 248 PetscCallMPI(MPI_Comm_size(comm, &comm_size)); 249 PetscCall(PetscPrintf(comm, 250 "\n-- Navier-Stokes solver - libCEED + PETSc --\n" 251 " MPI:\n" 252 " Host Name : %s\n" 253 " Total ranks : %d\n", 254 host_name, comm_size)); 255 256 // Problem specific info 257 PetscCall(problem->print_info(user, problem, user->app_ctx)); 258 259 // libCEED 260 const char *used_resource; 261 CeedMemType mem_type_backend; 262 PetscCallCeed(ceed, CeedGetResource(user->ceed, &used_resource)); 263 PetscCallCeed(ceed, CeedGetPreferredMemType(user->ceed, &mem_type_backend)); 264 PetscCall(PetscPrintf(comm, 265 " libCEED:\n" 266 " libCEED Backend : %s\n" 267 " libCEED Backend MemType : %s\n", 268 used_resource, CeedMemTypes[mem_type_backend])); 269 // PETSc 270 VecType vec_type; 271 char box_faces_str[PETSC_MAX_PATH_LEN] = "3,3,3"; 272 if (problem->dim == 2) box_faces_str[3] = '\0'; 273 PetscCall(PetscOptionsGetString(NULL, NULL, "-dm_plex_box_faces", box_faces_str, sizeof(box_faces_str), NULL)); 274 PetscCall(DMGetVecType(user->dm, &vec_type)); 275 PetscCall(PetscPrintf(comm, 276 " PETSc:\n" 277 " Box Faces : %s\n" 278 " DM VecType : %s\n" 279 " Time Stepping Scheme : %s\n", 280 box_faces_str, vec_type, phys_ctx->implicit ? "implicit" : "explicit")); 281 { 282 char pmat_type_str[PETSC_MAX_PATH_LEN]; 283 MatType amat_type, pmat_type; 284 Mat Amat, Pmat; 285 TSIJacobianFn *ijacob_function; 286 287 PetscCall(TSGetIJacobian(ts, &Amat, &Pmat, &ijacob_function, NULL)); 288 PetscCall(MatGetType(Amat, &amat_type)); 289 PetscCall(MatGetType(Pmat, &pmat_type)); 290 291 PetscCall(PetscStrncpy(pmat_type_str, pmat_type, sizeof(pmat_type_str))); 292 if (!strcmp(pmat_type, MATCEED)) { 293 MatType pmat_coo_type; 294 char pmat_coo_type_str[PETSC_MAX_PATH_LEN]; 295 296 PetscCall(MatCeedGetCOOMatType(Pmat, &pmat_coo_type)); 297 PetscCall(PetscSNPrintf(pmat_coo_type_str, sizeof(pmat_coo_type_str), " (COO MatType: %s)", pmat_coo_type)); 298 PetscCall(PetscStrlcat(pmat_type_str, pmat_coo_type_str, sizeof(pmat_type_str))); 299 } 300 if (ijacob_function) { 301 PetscCall(PetscPrintf(comm, 302 " IJacobian A MatType : %s\n" 303 " IJacobian P MatType : %s\n", 304 amat_type, pmat_type_str)); 305 } 306 } 307 if (user->app_ctx->cont_steps) { 308 PetscCall(PetscPrintf(comm, 309 " Continue:\n" 310 " Filename: : %s\n" 311 " Step: : %" PetscInt_FMT "\n" 312 " Time: : %g\n", 313 user->app_ctx->cont_file, user->app_ctx->cont_steps, user->app_ctx->cont_time)); 314 } 315 // Mesh 316 const PetscInt num_comp_q = 5; 317 PetscInt glob_dofs, owned_dofs, local_dofs; 318 const CeedInt num_P = user->app_ctx->degree + 1, num_Q = num_P + user->app_ctx->q_extra; 319 PetscCall(DMGetGlobalVectorInfo(user->dm, &owned_dofs, &glob_dofs, NULL)); 320 PetscCall(DMGetLocalVectorInfo(user->dm, &local_dofs, NULL, NULL)); 321 PetscCall(PetscPrintf(comm, 322 " Mesh:\n" 323 " Number of 1D Basis Nodes (P) : %" CeedInt_FMT "\n" 324 " Number of 1D Quadrature Points (Q) : %" CeedInt_FMT "\n" 325 " Global DoFs : %" PetscInt_FMT "\n" 326 " DoFs per node : %" PetscInt_FMT "\n" 327 " Global %" PetscInt_FMT "-DoF nodes : %" PetscInt_FMT "\n", 328 num_P, num_Q, glob_dofs, num_comp_q, num_comp_q, glob_dofs / num_comp_q)); 329 // -- Get Partition Statistics 330 PetscCall(PetscPrintf(comm, " Partition: (min,max,median,max/median)\n")); 331 { 332 PetscInt *gather_buffer = NULL; 333 PetscInt part_owned_dofs[3], part_local_dofs[3], part_boundary_dofs[3], part_neighbors[3]; 334 PetscInt median_index = comm_size % 2 ? comm_size / 2 : comm_size / 2 - 1; 335 if (!rank) PetscCall(PetscMalloc1(comm_size, &gather_buffer)); 336 337 PetscCallMPI(MPI_Gather(&owned_dofs, 1, MPIU_INT, gather_buffer, 1, MPIU_INT, 0, comm)); 338 if (!rank) { 339 PetscCall(PetscSortInt(comm_size, gather_buffer)); 340 part_owned_dofs[0] = gather_buffer[0]; // min 341 part_owned_dofs[1] = gather_buffer[comm_size - 1]; // max 342 part_owned_dofs[2] = gather_buffer[median_index]; // median 343 PetscReal part_owned_dof_ratio = (PetscReal)part_owned_dofs[1] / (PetscReal)part_owned_dofs[2]; 344 PetscCall(PetscPrintf( 345 comm, " Global Vector %" PetscInt_FMT "-DoF nodes : %" PetscInt_FMT ", %" PetscInt_FMT ", %" PetscInt_FMT ", %f\n", num_comp_q, 346 part_owned_dofs[0] / num_comp_q, part_owned_dofs[1] / num_comp_q, part_owned_dofs[2] / num_comp_q, part_owned_dof_ratio)); 347 } 348 349 PetscCallMPI(MPI_Gather(&local_dofs, 1, MPIU_INT, gather_buffer, 1, MPIU_INT, 0, comm)); 350 if (!rank) { 351 PetscCall(PetscSortInt(comm_size, gather_buffer)); 352 part_local_dofs[0] = gather_buffer[0]; // min 353 part_local_dofs[1] = gather_buffer[comm_size - 1]; // max 354 part_local_dofs[2] = gather_buffer[median_index]; // median 355 PetscReal part_local_dof_ratio = (PetscReal)part_local_dofs[1] / (PetscReal)part_local_dofs[2]; 356 PetscCall(PetscPrintf( 357 comm, " Local Vector %" PetscInt_FMT "-DoF nodes : %" PetscInt_FMT ", %" PetscInt_FMT ", %" PetscInt_FMT ", %f\n", num_comp_q, 358 part_local_dofs[0] / num_comp_q, part_local_dofs[1] / num_comp_q, part_local_dofs[2] / num_comp_q, part_local_dof_ratio)); 359 } 360 361 if (comm_size != 1) { 362 PetscInt num_remote_roots_total = 0, num_remote_leaves_total = 0, num_ghost_interface_ranks = 0, num_owned_interface_ranks = 0; 363 { 364 PetscSF sf; 365 PetscInt nrranks, niranks; 366 const PetscInt *roffset, *rmine, *rremote, *ioffset, *irootloc; 367 const PetscMPIInt *rranks, *iranks; 368 PetscCall(DMGetSectionSF(user->dm, &sf)); 369 PetscCall(PetscSFGetRootRanks(sf, &nrranks, &rranks, &roffset, &rmine, &rremote)); 370 PetscCall(PetscSFGetLeafRanks(sf, &niranks, &iranks, &ioffset, &irootloc)); 371 for (PetscInt i = 0; i < nrranks; i++) { 372 if (rranks[i] == rank) continue; // Ignore same-part global->local transfers 373 num_remote_roots_total += roffset[i + 1] - roffset[i]; 374 num_ghost_interface_ranks++; 375 } 376 for (PetscInt i = 0; i < niranks; i++) { 377 if (iranks[i] == rank) continue; 378 num_remote_leaves_total += ioffset[i + 1] - ioffset[i]; 379 num_owned_interface_ranks++; 380 } 381 } 382 PetscCallMPI(MPI_Gather(&num_remote_roots_total, 1, MPIU_INT, gather_buffer, 1, MPIU_INT, 0, comm)); 383 if (!rank) { 384 PetscCall(PetscSortInt(comm_size, gather_buffer)); 385 part_boundary_dofs[0] = gather_buffer[0]; // min 386 part_boundary_dofs[1] = gather_buffer[comm_size - 1]; // max 387 part_boundary_dofs[2] = gather_buffer[median_index]; // median 388 PetscReal part_shared_dof_ratio = (PetscReal)part_boundary_dofs[1] / (PetscReal)part_boundary_dofs[2]; 389 PetscCall(PetscPrintf( 390 comm, " Ghost Interface %" PetscInt_FMT "-DoF nodes : %" PetscInt_FMT ", %" PetscInt_FMT ", %" PetscInt_FMT ", %f\n", 391 num_comp_q, part_boundary_dofs[0] / num_comp_q, part_boundary_dofs[1] / num_comp_q, part_boundary_dofs[2] / num_comp_q, 392 part_shared_dof_ratio)); 393 } 394 395 PetscCallMPI(MPI_Gather(&num_ghost_interface_ranks, 1, MPIU_INT, gather_buffer, 1, MPIU_INT, 0, comm)); 396 if (!rank) { 397 PetscCall(PetscSortInt(comm_size, gather_buffer)); 398 part_neighbors[0] = gather_buffer[0]; // min 399 part_neighbors[1] = gather_buffer[comm_size - 1]; // max 400 part_neighbors[2] = gather_buffer[median_index]; // median 401 PetscReal part_neighbors_ratio = (PetscReal)part_neighbors[1] / (PetscReal)part_neighbors[2]; 402 PetscCall(PetscPrintf(comm, " Ghost Interface Ranks : %" PetscInt_FMT ", %" PetscInt_FMT ", %" PetscInt_FMT ", %f\n", 403 part_neighbors[0], part_neighbors[1], part_neighbors[2], part_neighbors_ratio)); 404 } 405 406 PetscCallMPI(MPI_Gather(&num_remote_leaves_total, 1, MPIU_INT, gather_buffer, 1, MPIU_INT, 0, comm)); 407 if (!rank) { 408 PetscCall(PetscSortInt(comm_size, gather_buffer)); 409 part_boundary_dofs[0] = gather_buffer[0]; // min 410 part_boundary_dofs[1] = gather_buffer[comm_size - 1]; // max 411 part_boundary_dofs[2] = gather_buffer[median_index]; // median 412 PetscReal part_shared_dof_ratio = (PetscReal)part_boundary_dofs[1] / (PetscReal)part_boundary_dofs[2]; 413 PetscCall(PetscPrintf( 414 comm, " Owned Interface %" PetscInt_FMT "-DoF nodes : %" PetscInt_FMT ", %" PetscInt_FMT ", %" PetscInt_FMT ", %f\n", 415 num_comp_q, part_boundary_dofs[0] / num_comp_q, part_boundary_dofs[1] / num_comp_q, part_boundary_dofs[2] / num_comp_q, 416 part_shared_dof_ratio)); 417 } 418 419 PetscCallMPI(MPI_Gather(&num_owned_interface_ranks, 1, MPIU_INT, gather_buffer, 1, MPIU_INT, 0, comm)); 420 if (!rank) { 421 PetscCall(PetscSortInt(comm_size, gather_buffer)); 422 part_neighbors[0] = gather_buffer[0]; // min 423 part_neighbors[1] = gather_buffer[comm_size - 1]; // max 424 part_neighbors[2] = gather_buffer[median_index]; // median 425 PetscReal part_neighbors_ratio = (PetscReal)part_neighbors[1] / (PetscReal)part_neighbors[2]; 426 PetscCall(PetscPrintf(comm, " Owned Interface Ranks : %" PetscInt_FMT ", %" PetscInt_FMT ", %" PetscInt_FMT ", %f\n", 427 part_neighbors[0], part_neighbors[1], part_neighbors[2], part_neighbors_ratio)); 428 } 429 } 430 431 if (!rank) PetscCall(PetscFree(gather_buffer)); 432 } 433 PetscFunctionReturn(PETSC_SUCCESS); 434 } 435