xref: /libCEED/examples/petsc/bps.c (revision 2129291034139a1db9ffe414bf8bc92a8e43e245)
1 // Copyright (c) 2017-2025, Lawrence Livermore National Security, LLC and other CEED contributors.
2 // All Rights Reserved. See the top-level LICENSE and NOTICE files for details.
3 //
4 // SPDX-License-Identifier: BSD-2-Clause
5 //
6 // This file is part of CEED:  http://github.com/ceed
7 
8 //                        libCEED + PETSc Example: CEED BPs
9 //
10 // This example demonstrates a simple usage of libCEED with PETSc to solve the CEED BP benchmark problems, see http://ceed.exascaleproject.org/bps.
11 //
12 // The code uses higher level communication protocols in DMPlex.
13 //
14 // Build with:
15 //
16 //     make bps [PETSC_DIR=</path/to/petsc>] [CEED_DIR=</path/to/libceed>]
17 //
18 // Sample runs:
19 //
20 //     ./bps -problem bp1 -degree 3
21 //     ./bps -problem bp2 -degree 3
22 //     ./bps -problem bp3 -degree 3
23 //     ./bps -problem bp4 -degree 3
24 //     ./bps -problem bp5 -degree 3 -ceed /cpu/self
25 //     ./bps -problem bp6 -degree 3 -ceed /gpu/cuda
26 //
27 //TESTARGS(name="BP3, tet elements") -ceed {ceed_resource} -test -problem bp3 -degree 3 -ksp_max_it_clip 50,50 -simplex
28 //TESTARGS(name="BP5, hex elements") -ceed {ceed_resource} -test -problem bp5 -degree 3 -ksp_max_it_clip 18,18
29 //TESTARGS(name="BP1+3, hex elements") -ceed {ceed_resource} -test -problem bp1_3 -degree 3 -ksp_max_it_clip 18,18
30 //TESTARGS(name="BP2+4, hex elements") -ceed {ceed_resource} -test -problem bp2_4 -degree 3 -ksp_max_it_clip 18,18
31 
32 /// @file
33 /// CEED BPs example using PETSc with DMPlex
34 /// See bpsraw.c for a "raw" implementation using a structured grid.
35 const char help[] = "Solve CEED BPs using PETSc with DMPlex\n";
36 
37 #include "bps.h"
38 
39 #include <ceed.h>
40 #include <petscdmplex.h>
41 #include <petscksp.h>
42 #include <stdbool.h>
43 #include <string.h>
44 
45 #include "include/bpsproblemdata.h"
46 #include "include/libceedsetup.h"
47 #include "include/matops.h"
48 #include "include/petscutils.h"
49 #include "include/petscversion.h"
50 #include "include/structs.h"
51 
52 // -----------------------------------------------------------------------------
53 // Main body of program, called in a loop for performance benchmarking purposes
54 // -----------------------------------------------------------------------------
55 static PetscErrorCode RunWithDM(RunParams rp, DM dm, const char *ceed_resource) {
56   double               my_rt_start, my_rt, rt_min, rt_max;
57   PetscInt             xl_size, l_size, g_size;
58   Vec                  X, X_loc, rhs, rhs_loc;
59   Mat                  mat_O;
60   KSP                  ksp;
61   OperatorApplyContext op_apply_ctx, op_error_ctx;
62   Ceed                 ceed;
63   CeedData             ceed_data;
64   CeedQFunction        qf_error;
65   CeedOperator         op_error;
66   CeedVector           rhs_ceed, target;
67   VecType              vec_type = VECSTANDARD;
68   PetscMemType         mem_type;
69 
70   PetscFunctionBeginUser;
71   // Set up libCEED
72   CeedInit(ceed_resource, &ceed);
73   CeedMemType mem_type_backend;
74   CeedGetPreferredMemType(ceed, &mem_type_backend);
75 
76   // Set mesh vec_type
77   switch (mem_type_backend) {
78     case CEED_MEM_HOST:
79       vec_type = VECSTANDARD;
80       break;
81     case CEED_MEM_DEVICE: {
82       const char *resolved;
83 
84       CeedGetResource(ceed, &resolved);
85       if (strstr(resolved, "/gpu/cuda")) vec_type = VECCUDA;
86       else if (strstr(resolved, "/gpu/hip/occa")) vec_type = VECSTANDARD;  // https://github.com/CEED/libCEED/issues/678
87       else if (strstr(resolved, "/gpu/hip")) vec_type = VECHIP;
88       else vec_type = VECSTANDARD;
89     }
90   }
91   PetscCall(DMSetVecType(dm, vec_type));
92   PetscCall(DMSetFromOptions(dm));
93 
94   // Create global and local solution vectors
95   PetscCall(DMCreateGlobalVector(dm, &X));
96   PetscCall(VecGetLocalSize(X, &l_size));
97   PetscCall(VecGetSize(X, &g_size));
98   PetscCall(DMCreateLocalVector(dm, &X_loc));
99   PetscCall(VecGetSize(X_loc, &xl_size));
100   PetscCall(VecDuplicate(X, &rhs));
101 
102   // Operator
103   PetscCall(PetscMalloc1(1, &op_apply_ctx));
104   PetscCall(PetscMalloc1(1, &op_error_ctx));
105   PetscCall(MatCreateShell(rp->comm, l_size, l_size, g_size, g_size, op_apply_ctx, &mat_O));
106   PetscCall(MatShellSetOperation(mat_O, MATOP_MULT, (void (*)(void))MatMult_Ceed));
107   PetscCall(MatShellSetOperation(mat_O, MATOP_GET_DIAGONAL, (void (*)(void))MatGetDiag));
108   PetscCall(MatShellSetVecType(mat_O, vec_type));
109 
110   // Print summary
111   if (!rp->test_mode) {
112     PetscInt P = rp->degree + 1, Q = P + rp->q_extra;
113 
114     const char *used_resource;
115     CeedGetResource(ceed, &used_resource);
116 
117     VecType vec_type;
118     PetscCall(VecGetType(X, &vec_type));
119 
120     PetscInt c_start, c_end;
121     PetscCall(DMPlexGetHeightStratum(dm, 0, &c_start, &c_end));
122     DMPolytopeType cell_type;
123     PetscCall(DMPlexGetCellType(dm, c_start, &cell_type));
124     CeedElemTopology elem_topo = ElemTopologyP2C(cell_type);
125     PetscMPIInt      comm_size;
126     PetscCall(MPI_Comm_size(rp->comm, &comm_size));
127     PetscCall(PetscPrintf(rp->comm,
128                           "\n-- CEED Benchmark Problem %" CeedInt_FMT " -- libCEED + PETSc --\n"
129                           "  MPI:\n"
130                           "    Hostname                                : %s\n"
131                           "    Total ranks                             : %d\n"
132                           "    Ranks per compute node                  : %d\n"
133                           "  PETSc:\n"
134                           "    PETSc Vec Type                          : %s\n"
135                           "  libCEED:\n"
136                           "    libCEED Backend                         : %s\n"
137                           "    libCEED Backend MemType                 : %s\n"
138                           "  Mesh:\n"
139                           "    Solution Order (P)                      : %" PetscInt_FMT "\n"
140                           "    Quadrature  Order (Q)                   : %" PetscInt_FMT "\n"
141                           "    Additional quadrature points (q_extra)  : %" PetscInt_FMT "\n"
142                           "    Global nodes                            : %" PetscInt_FMT "\n"
143                           "    Local Elements                          : %" PetscInt_FMT "\n"
144                           "    Element topology                        : %s\n"
145                           "    Owned nodes                             : %" PetscInt_FMT "\n"
146                           "    DoF per node                            : %" PetscInt_FMT "\n",
147                           rp->bp_choice + 1, rp->hostname, comm_size, rp->ranks_per_node, vec_type, used_resource, CeedMemTypes[mem_type_backend], P,
148                           Q, rp->q_extra, g_size / rp->num_comp_u, c_end - c_start, CeedElemTopologies[elem_topo], l_size / rp->num_comp_u,
149                           rp->num_comp_u));
150   }
151 
152   // Create RHS vector
153   PetscCall(VecDuplicate(X_loc, &rhs_loc));
154   PetscCall(VecZeroEntries(rhs_loc));
155   CeedVectorCreate(ceed, xl_size, &rhs_ceed);
156   PetscCall(VecP2C(rhs_loc, &mem_type, rhs_ceed));
157 
158   PetscCall(PetscMalloc1(1, &ceed_data));
159   PetscCall(SetupLibceedByDegree(dm, ceed, rp->degree, rp->dim, rp->q_extra, rp->dim, rp->num_comp_u, g_size, xl_size, bp_options[rp->bp_choice],
160                                  ceed_data, true, true, rhs_ceed, &target));
161 
162   // Gather RHS
163   PetscCall(VecC2P(rhs_ceed, mem_type, rhs_loc));
164   PetscCall(VecZeroEntries(rhs));
165   PetscCall(DMLocalToGlobal(dm, rhs_loc, ADD_VALUES, rhs));
166   CeedVectorDestroy(&rhs_ceed);
167 
168   // Create the error QFunction
169   CeedQFunctionCreateInterior(ceed, 1, bp_options[rp->bp_choice].error, bp_options[rp->bp_choice].error_loc, &qf_error);
170   CeedQFunctionAddInput(qf_error, "u", rp->num_comp_u, CEED_EVAL_INTERP);
171   CeedQFunctionAddInput(qf_error, "true_soln", rp->num_comp_u, CEED_EVAL_NONE);
172   CeedQFunctionAddInput(qf_error, "qdata", ceed_data->q_data_size, CEED_EVAL_NONE);
173   CeedQFunctionAddOutput(qf_error, "error", rp->num_comp_u, CEED_EVAL_INTERP);
174 
175   // Create the error operator
176   CeedOperatorCreate(ceed, qf_error, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_error);
177   CeedOperatorSetField(op_error, "u", ceed_data->elem_restr_u, ceed_data->basis_u, CEED_VECTOR_ACTIVE);
178   CeedOperatorSetField(op_error, "true_soln", ceed_data->elem_restr_u_i, CEED_BASIS_NONE, target);
179   CeedOperatorSetField(op_error, "qdata", ceed_data->elem_restr_qd_i, CEED_BASIS_NONE, ceed_data->q_data);
180   CeedOperatorSetField(op_error, "error", ceed_data->elem_restr_u, ceed_data->basis_u, CEED_VECTOR_ACTIVE);
181 
182   // Set up apply operator context
183   PetscCall(SetupApplyOperatorCtx(rp->comm, dm, ceed, ceed_data, X_loc, op_apply_ctx));
184   PetscCall(KSPCreate(rp->comm, &ksp));
185   {
186     PC pc;
187     PetscCall(KSPGetPC(ksp, &pc));
188     if (rp->bp_choice == CEED_BP1 || rp->bp_choice == CEED_BP2 || rp->bp_choice == CEED_BP13 || rp->bp_choice == CEED_BP24) {
189       PetscCall(PCSetType(pc, PCJACOBI));
190       if (rp->simplex || rp->bp_choice == CEED_BP13 || rp->bp_choice == CEED_BP24) {
191         PetscCall(PCJacobiSetType(pc, PC_JACOBI_DIAGONAL));
192       } else {
193         PetscCall(PCJacobiSetType(pc, PC_JACOBI_ROWSUM));
194       }
195     } else {
196       PetscCall(PCSetType(pc, PCNONE));
197     }
198     PetscCall(KSPSetType(ksp, KSPCG));
199     PetscCall(KSPSetNormType(ksp, KSP_NORM_NATURAL));
200     PetscCall(KSPSetTolerances(ksp, 1e-10, PETSC_DEFAULT, PETSC_DEFAULT, PETSC_DEFAULT));
201   }
202   PetscCall(KSPSetOperators(ksp, mat_O, mat_O));
203 
204   // First run's performance log is not considered for benchmarking purposes
205   PetscCall(KSPSetTolerances(ksp, 1e-10, PETSC_DEFAULT, PETSC_DEFAULT, 1));
206   my_rt_start = MPI_Wtime();
207   PetscCall(KSPSolve(ksp, rhs, X));
208   my_rt = MPI_Wtime() - my_rt_start;
209   PetscCall(MPI_Allreduce(MPI_IN_PLACE, &my_rt, 1, MPI_DOUBLE, MPI_MIN, rp->comm));
210   // Set maxits based on first iteration timing
211   if (my_rt > 0.02) {
212     PetscCall(KSPSetTolerances(ksp, 1e-10, PETSC_DEFAULT, PETSC_DEFAULT, rp->ksp_max_it_clip[0]));
213   } else {
214     PetscCall(KSPSetTolerances(ksp, 1e-10, PETSC_DEFAULT, PETSC_DEFAULT, rp->ksp_max_it_clip[1]));
215   }
216   PetscCall(KSPSetFromOptions(ksp));
217 
218   // Timed solve
219   PetscCall(VecZeroEntries(X));
220   PetscCall(PetscBarrier((PetscObject)ksp));
221 
222   // -- Performance logging
223   PetscCall(PetscLogStagePush(rp->solve_stage));
224 
225   // -- Solve
226   my_rt_start = MPI_Wtime();
227   PetscCall(KSPSolve(ksp, rhs, X));
228   my_rt = MPI_Wtime() - my_rt_start;
229 
230   // -- Performance logging
231   PetscCall(PetscLogStagePop());
232 
233   // Output results
234   {
235     KSPType            ksp_type;
236     KSPConvergedReason reason;
237     PetscReal          rnorm;
238     PetscInt           its;
239     PetscCall(KSPGetType(ksp, &ksp_type));
240     PetscCall(KSPGetConvergedReason(ksp, &reason));
241     PetscCall(KSPGetIterationNumber(ksp, &its));
242     PetscCall(KSPGetResidualNorm(ksp, &rnorm));
243     if (!rp->test_mode || reason < 0 || rnorm > 1e-8) {
244       PetscCall(PetscPrintf(rp->comm,
245                             "  KSP:\n"
246                             "    KSP Type                                : %s\n"
247                             "    KSP Convergence                         : %s\n"
248                             "    Total KSP Iterations                    : %" PetscInt_FMT "\n"
249                             "    Final rnorm                             : %e\n",
250                             ksp_type, KSPConvergedReasons[reason], its, (double)rnorm));
251     }
252     if (!rp->test_mode) {
253       PetscCall(PetscPrintf(rp->comm, "  Performance:\n"));
254     }
255     {
256       // Set up error operator context
257       PetscCall(SetupErrorOperatorCtx(rp->comm, dm, ceed, ceed_data, X_loc, op_error, op_error_ctx));
258       PetscScalar l2_error;
259       PetscCall(ComputeL2Error(X, &l2_error, op_error_ctx));
260       // Tighter tol for BP1, BP2
261       // Looser tol for BP3, BP4, BP5, and BP6 with extra for vector valued problems
262       // BP1+3 and BP2+4 follow the pattern for BP3 and BP4
263       PetscReal tol = rp->bp_choice < CEED_BP3 ? 5e-4 : (5e-2 + (rp->bp_choice % 2 == 1 ? 5e-3 : 0));
264       if (!rp->test_mode || l2_error > tol) {
265         PetscCall(MPI_Allreduce(&my_rt, &rt_min, 1, MPI_DOUBLE, MPI_MIN, rp->comm));
266         PetscCall(MPI_Allreduce(&my_rt, &rt_max, 1, MPI_DOUBLE, MPI_MAX, rp->comm));
267         PetscCall(PetscPrintf(rp->comm,
268                               "    L2 Error                                : %e\n"
269                               "    CG Solve Time                           : %g (%g) sec\n",
270                               (double)l2_error, rt_max, rt_min));
271       }
272     }
273     if (!rp->test_mode) {
274       PetscCall(PetscPrintf(rp->comm, "    DoFs/Sec in CG                          : %g (%g) million\n", 1e-6 * g_size * its / rt_max,
275                             1e-6 * g_size * its / rt_min));
276     }
277   }
278 
279   if (rp->write_solution) {
280     PetscViewer vtk_viewer_soln;
281 
282     PetscCall(PetscViewerCreate(rp->comm, &vtk_viewer_soln));
283     PetscCall(PetscViewerSetType(vtk_viewer_soln, PETSCVIEWERVTK));
284     PetscCall(PetscViewerFileSetName(vtk_viewer_soln, "solution.vtu"));
285     PetscCall(VecView(X, vtk_viewer_soln));
286     PetscCall(PetscViewerDestroy(&vtk_viewer_soln));
287   }
288 
289   // Cleanup
290   PetscCall(VecDestroy(&X));
291   PetscCall(VecDestroy(&X_loc));
292   PetscCall(VecDestroy(&op_apply_ctx->Y_loc));
293   PetscCall(VecDestroy(&op_error_ctx->Y_loc));
294   PetscCall(MatDestroy(&mat_O));
295   PetscCall(PetscFree(op_apply_ctx));
296   PetscCall(PetscFree(op_error_ctx));
297   PetscCall(CeedDataDestroy(0, ceed_data));
298 
299   PetscCall(VecDestroy(&rhs));
300   PetscCall(VecDestroy(&rhs_loc));
301   PetscCall(KSPDestroy(&ksp));
302   CeedVectorDestroy(&target);
303   CeedQFunctionDestroy(&qf_error);
304   CeedOperatorDestroy(&op_error);
305   CeedDestroy(&ceed);
306   PetscFunctionReturn(PETSC_SUCCESS);
307 }
308 
309 static PetscErrorCode Run(RunParams rp, PetscInt num_resources, char *const *ceed_resources, PetscInt num_bp_choices, const BPType *bp_choices) {
310   DM dm;
311 
312   PetscFunctionBeginUser;
313   // Setup DM
314   PetscCall(CreateDistributedDM(rp, &dm));
315 
316   for (PetscInt b = 0; b < num_bp_choices; b++) {
317     DM       dm_deg;
318     VecType  vec_type;
319     PetscInt q_extra = rp->q_extra;
320     rp->bp_choice    = bp_choices[b];
321     rp->num_comp_u   = bp_options[rp->bp_choice].num_comp_u;
322     rp->q_extra      = q_extra < 0 ? bp_options[rp->bp_choice].q_extra : q_extra;
323     PetscCall(DMClone(dm, &dm_deg));
324     PetscCall(DMGetVecType(dm, &vec_type));
325     PetscCall(DMSetVecType(dm_deg, vec_type));
326     // Create DM
327     PetscInt dim;
328     PetscCall(DMGetDimension(dm_deg, &dim));
329     PetscCall(SetupDMByDegree(dm_deg, rp->degree, rp->q_extra, rp->num_comp_u, dim, bp_options[rp->bp_choice].enforce_bc));
330     for (PetscInt r = 0; r < num_resources; r++) {
331       PetscCall(RunWithDM(rp, dm_deg, ceed_resources[r]));
332     }
333     PetscCall(DMDestroy(&dm_deg));
334     rp->q_extra = q_extra;
335   }
336 
337   PetscCall(DMDestroy(&dm));
338   PetscFunctionReturn(PETSC_SUCCESS);
339 }
340 
341 int main(int argc, char **argv) {
342   PetscMPIInt comm_size;
343   RunParams   rp;
344   MPI_Comm    comm;
345   char        filename[PETSC_MAX_PATH_LEN];
346   char       *ceed_resources[30];
347   PetscInt    num_ceed_resources = 30;
348   char        hostname[PETSC_MAX_PATH_LEN];
349 
350   PetscInt    dim = 3, mesh_elem[3] = {3, 3, 3};
351   PetscInt    num_degrees = 30, degree[30] = {0}, num_local_nodes = 2, local_nodes[2] = {0};
352   PetscMPIInt ranks_per_node;
353   PetscBool   degree_set;
354   BPType      bp_choices[10];
355   PetscInt    num_bp_choices = 10;
356 
357   // Initialize PETSc
358   PetscCall(PetscInitialize(&argc, &argv, NULL, help));
359   comm = PETSC_COMM_WORLD;
360   PetscCall(MPI_Comm_size(comm, &comm_size));
361 #if defined(PETSC_HAVE_MPI_PROCESS_SHARED_MEMORY)
362   {
363     MPI_Comm splitcomm;
364 
365     PetscCall(MPI_Comm_split_type(comm, MPI_COMM_TYPE_SHARED, 0, MPI_INFO_NULL, &splitcomm));
366     PetscCall(MPI_Comm_size(splitcomm, &ranks_per_node));
367     PetscCall(MPI_Comm_free(&splitcomm));
368   }
369 #else
370   ranks_per_node = -1;  // Unknown
371 #endif
372 
373   // Setup all parameters needed in Run()
374   PetscCall(PetscMalloc1(1, &rp));
375   rp->comm = comm;
376 
377   // Read command line options
378   PetscOptionsBegin(comm, NULL, "CEED BPs in PETSc", NULL);
379   {
380     PetscBool set;
381     PetscCall(PetscOptionsEnumArray("-problem", "CEED benchmark problem to solve", NULL, bp_types, (PetscEnum *)bp_choices, &num_bp_choices, &set));
382     if (!set) {
383       bp_choices[0]  = CEED_BP1;
384       num_bp_choices = 1;
385     }
386   }
387   rp->test_mode = PETSC_FALSE;
388   PetscCall(PetscOptionsBool("-test", "Testing mode (do not print unless error is large)", NULL, rp->test_mode, &rp->test_mode, NULL));
389   rp->write_solution = PETSC_FALSE;
390   PetscCall(PetscOptionsBool("-write_solution", "Write solution for visualization", NULL, rp->write_solution, &rp->write_solution, NULL));
391   rp->simplex = PETSC_FALSE;
392   PetscCall(PetscOptionsBool("-simplex", "Element topology (default:hex)", NULL, rp->simplex, &rp->simplex, NULL));
393   if ((bp_choices[0] == CEED_BP5 || bp_choices[0] == CEED_BP6) && (rp->simplex)) {
394     SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "BP5/6 is not supported with simplex");
395   }
396   degree[0] = rp->test_mode ? 3 : 2;
397   PetscCall(PetscOptionsIntArray("-degree", "Polynomial degree of tensor product basis", NULL, degree, &num_degrees, &degree_set));
398   if (!degree_set) num_degrees = 1;
399   rp->q_extra = PETSC_DECIDE;
400   PetscCall(PetscOptionsInt("-q_extra", "Number of extra quadrature points (-1 for auto)", NULL, rp->q_extra, &rp->q_extra, NULL));
401   {
402     PetscBool set;
403     PetscCall(PetscOptionsStringArray("-ceed", "CEED resource specifier (comma-separated list)", NULL, ceed_resources, &num_ceed_resources, &set));
404     if (!set) {
405       PetscCall(PetscStrallocpy("/cpu/self", &ceed_resources[0]));
406       num_ceed_resources = 1;
407     }
408   }
409   PetscCall(PetscGetHostName(hostname, sizeof hostname));
410   PetscCall(PetscOptionsString("-hostname", "Hostname for output", NULL, hostname, hostname, sizeof(hostname), NULL));
411   rp->read_mesh = PETSC_FALSE;
412   PetscCall(PetscOptionsString("-mesh", "Read mesh from file", NULL, filename, filename, sizeof(filename), &rp->read_mesh));
413   rp->filename = filename;
414   if (!rp->read_mesh) {
415     PetscInt tmp = dim;
416     PetscCall(PetscOptionsIntArray("-cells", "Number of cells per dimension", NULL, mesh_elem, &tmp, NULL));
417   }
418   local_nodes[0] = 1000;
419   PetscCall(PetscOptionsIntArray("-local_nodes",
420                                  "Target number of locally owned nodes per "
421                                  "process (single value or min,max)",
422                                  NULL, local_nodes, &num_local_nodes, &rp->user_l_nodes));
423   if (num_local_nodes < 2) local_nodes[1] = 2 * local_nodes[0];
424   {
425     PetscInt two           = 2;
426     rp->ksp_max_it_clip[0] = 5;
427     rp->ksp_max_it_clip[1] = 20;
428     PetscCall(PetscOptionsIntArray("-ksp_max_it_clip", "Min and max number of iterations to use during benchmarking", NULL, rp->ksp_max_it_clip, &two,
429                                    NULL));
430   }
431   if (!degree_set) {
432     PetscInt max_degree = 8;
433     PetscCall(PetscOptionsInt("-max_degree", "Range of degrees [1, max_degree] to run with", NULL, max_degree, &max_degree, NULL));
434     for (PetscInt i = 0; i < max_degree; i++) degree[i] = i + 1;
435     num_degrees = max_degree;
436   }
437   {
438     PetscBool flg;
439     PetscInt  p = ranks_per_node;
440     PetscCall(PetscOptionsInt("-p", "Number of MPI ranks per node", NULL, p, &p, &flg));
441     if (flg) ranks_per_node = p;
442   }
443 
444   PetscOptionsEnd();
445 
446   // Register PETSc logging stage
447   PetscCall(PetscLogStageRegister("Solve Stage", &rp->solve_stage));
448 
449   rp->hostname       = hostname;
450   rp->dim            = dim;
451   rp->mesh_elem      = mesh_elem;
452   rp->ranks_per_node = ranks_per_node;
453 
454   for (PetscInt d = 0; d < num_degrees; d++) {
455     PetscInt deg = degree[d];
456     for (PetscInt n = local_nodes[0]; n < local_nodes[1]; n *= 2) {
457       rp->degree      = deg;
458       rp->local_nodes = n;
459       PetscCall(Run(rp, num_ceed_resources, ceed_resources, num_bp_choices, bp_choices));
460     }
461   }
462   // Clear memory
463   PetscCall(PetscFree(rp));
464   for (PetscInt i = 0; i < num_ceed_resources; i++) {
465     PetscCall(PetscFree(ceed_resources[i]));
466   }
467   return PetscFinalize();
468 }
469