// Copyright (c) 2017-2026, Lawrence Livermore National Security, LLC and other CEED contributors. // All Rights Reserved. See the top-level LICENSE and NOTICE files for details. // // SPDX-License-Identifier: BSD-2-Clause // // This file is part of CEED: http://github.com/ceed /// @file /// Command line option processing for solid mechanics example using PETSc #include "../include/cl-options.h" #include #include // ----------------------------------------------------------------------------- // Process command line options // ----------------------------------------------------------------------------- // Process general command line options PetscErrorCode ProcessCommandLineOptions(MPI_Comm comm, AppCtx app_ctx) { PetscBool ceed_flag = PETSC_FALSE; PetscFunctionBeginUser; PetscOptionsBegin(comm, NULL, "Elasticity / Hyperelasticity in PETSc with libCEED", NULL); PetscCall(PetscOptionsString("-ceed", "CEED resource specifier", NULL, app_ctx->ceed_resource, app_ctx->ceed_resource, sizeof(app_ctx->ceed_resource), &ceed_flag)); PetscCall(PetscStrncpy(app_ctx->output_dir, ".", 2)); // Default - current directory PetscCall(PetscOptionsString("-output_dir", "Output directory", NULL, app_ctx->output_dir, app_ctx->output_dir, sizeof(app_ctx->output_dir), NULL)); app_ctx->degree = 3; PetscCall(PetscOptionsInt("-degree", "Polynomial degree of tensor product basis", NULL, app_ctx->degree, &app_ctx->degree, NULL)); app_ctx->q_extra = 0; PetscCall(PetscOptionsInt("-q_extra", "Number of extra quadrature points", NULL, app_ctx->q_extra, &app_ctx->q_extra, NULL)); PetscCall(PetscOptionsString("-mesh", "Read mesh from file", NULL, app_ctx->mesh_file, app_ctx->mesh_file, sizeof(app_ctx->mesh_file), NULL)); app_ctx->problem_choice = ELAS_LINEAR; // Default - Linear Elasticity PetscCall(PetscOptionsEnum("-problem", "Solves Elasticity & Hyperelasticity Problems", NULL, problemTypes, (PetscEnum)app_ctx->problem_choice, (PetscEnum *)&app_ctx->problem_choice, NULL)); app_ctx->name = problemTypes[app_ctx->problem_choice]; app_ctx->name_for_disp = problemTypesForDisp[app_ctx->problem_choice]; app_ctx->num_increments = app_ctx->problem_choice == ELAS_LINEAR ? 1 : 10; PetscCall(PetscOptionsInt("-num_steps", "Number of pseudo-time steps", NULL, app_ctx->num_increments, &app_ctx->num_increments, NULL)); app_ctx->forcing_choice = FORCE_NONE; // Default - no forcing term PetscCall(PetscOptionsEnum("-forcing", "Set forcing function option", NULL, forcing_types, (PetscEnum)app_ctx->forcing_choice, (PetscEnum *)&app_ctx->forcing_choice, NULL)); PetscInt max_n = 3; app_ctx->forcing_vector[0] = 0; app_ctx->forcing_vector[1] = -1; app_ctx->forcing_vector[2] = 0; PetscCall(PetscOptionsScalarArray("-forcing_vec", "Direction to apply constant force", NULL, app_ctx->forcing_vector, &max_n, NULL)); if ((app_ctx->problem_choice == ELAS_FS_NH || app_ctx->problem_choice == ELAS_FS_MR) && app_ctx->forcing_choice == FORCE_CONST) { SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot use constant forcing and finite strain formulation. " "Constant forcing in reference frame currently unavailable."); } // Dirichlet boundary conditions app_ctx->bc_clamp_count = 16; PetscCall(PetscOptionsIntArray("-bc_clamp", "Face IDs to apply incremental Dirichlet BC", NULL, app_ctx->bc_clamp_faces, &app_ctx->bc_clamp_count, NULL)); // Set vector for each clamped BC for (PetscInt i = 0; i < app_ctx->bc_clamp_count; i++) { // Translation vector char option_name[25]; const size_t nclamp_params = sizeof(app_ctx->bc_clamp_max[0]) / sizeof(app_ctx->bc_clamp_max[0][0]); for (PetscInt j = 0; j < nclamp_params; j++) app_ctx->bc_clamp_max[i][j] = 0.; snprintf(option_name, sizeof option_name, "-bc_clamp_%" PetscInt_FMT "_translate", app_ctx->bc_clamp_faces[i]); max_n = 3; PetscCall(PetscOptionsScalarArray(option_name, "Vector to translate clamped end by", NULL, app_ctx->bc_clamp_max[i], &max_n, NULL)); // Rotation vector max_n = 5; snprintf(option_name, sizeof option_name, "-bc_clamp_%" PetscInt_FMT "_rotate", app_ctx->bc_clamp_faces[i]); PetscCall(PetscOptionsScalarArray(option_name, "Vector with axis of rotation and rotation, in radians", NULL, &app_ctx->bc_clamp_max[i][3], &max_n, NULL)); // Normalize PetscScalar norm = sqrt(app_ctx->bc_clamp_max[i][3] * app_ctx->bc_clamp_max[i][3] + app_ctx->bc_clamp_max[i][4] * app_ctx->bc_clamp_max[i][4] + app_ctx->bc_clamp_max[i][5] * app_ctx->bc_clamp_max[i][5]); if (fabs(norm) < 1e-16) norm = 1; for (PetscInt j = 0; j < 3; j++) app_ctx->bc_clamp_max[i][3 + j] /= norm; } // Neumann boundary conditions app_ctx->bc_traction_count = 16; PetscCall(PetscOptionsIntArray("-bc_traction", "Face IDs to apply traction (Neumann) BC", NULL, app_ctx->bc_traction_faces, &app_ctx->bc_traction_count, NULL)); // Set vector for each traction BC for (PetscInt i = 0; i < app_ctx->bc_traction_count; i++) { // Translation vector char option_name[25]; for (PetscInt j = 0; j < 3; j++) app_ctx->bc_traction_vector[i][j] = 0.; snprintf(option_name, sizeof option_name, "-bc_traction_%" PetscInt_FMT, app_ctx->bc_traction_faces[i]); max_n = 3; PetscBool set = false; PetscCall(PetscOptionsScalarArray(option_name, "Traction vector for constrained face", NULL, app_ctx->bc_traction_vector[i], &max_n, &set)); if (!set) SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "Traction vector must be set for all traction boundary conditions."); } app_ctx->multigrid_choice = MULTIGRID_LOGARITHMIC; PetscCall(PetscOptionsEnum("-multigrid", "Set multigrid type option", NULL, multigrid_types, (PetscEnum)app_ctx->multigrid_choice, (PetscEnum *)&app_ctx->multigrid_choice, NULL)); app_ctx->test_mode = PETSC_FALSE; PetscCall(PetscOptionsBool("-test", "Testing mode (do not print unless error is large)", NULL, app_ctx->test_mode, &(app_ctx->test_mode), NULL)); app_ctx->expect_final_strain = -1.; PetscCall(PetscOptionsReal("-expect_final_strain_energy", "Expect final strain energy close to this value.", NULL, app_ctx->expect_final_strain, &app_ctx->expect_final_strain, NULL)); app_ctx->test_tol = 1e-8; PetscCall(PetscOptionsReal("-expect_final_state_rtol", "Relative tolerance for final strain energy test", NULL, app_ctx->test_tol, &app_ctx->test_tol, NULL)); app_ctx->view_soln = PETSC_FALSE; PetscCall(PetscOptionsBool("-view_soln", "Write out solution vector for viewing", NULL, app_ctx->view_soln, &(app_ctx->view_soln), NULL)); app_ctx->view_final_soln = PETSC_FALSE; PetscCall(PetscOptionsBool("-view_final_soln", "Write out final solution vector for viewing", NULL, app_ctx->view_final_soln, &(app_ctx->view_final_soln), NULL)); PetscBool set; char energy_viewer_filename[PETSC_MAX_PATH_LEN] = ""; PetscCall(PetscOptionsString("-strain_energy_monitor", "Print out current strain energy at every load increment", NULL, energy_viewer_filename, energy_viewer_filename, sizeof(energy_viewer_filename), &set)); if (set) { PetscCall(PetscViewerASCIIOpen(comm, energy_viewer_filename, &app_ctx->energy_viewer)); PetscCall(PetscViewerASCIIPrintf(app_ctx->energy_viewer, "increment,energy\n")); // Initial configuration is base energy state; this may not be true if we extend in the future to initially loaded configurations (because a truly // at-rest initial state may not be realizable). PetscCall(PetscViewerASCIIPrintf(app_ctx->energy_viewer, "%f,%e\n", 0., 0.)); } PetscOptionsEnd(); // End of setting AppCtx // Check for all required values set if (app_ctx->test_mode) { if (app_ctx->forcing_choice == FORCE_NONE && !app_ctx->bc_clamp_count) app_ctx->forcing_choice = FORCE_MMS; } if (!app_ctx->bc_clamp_count && app_ctx->forcing_choice != FORCE_MMS) { SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "-boundary options needed"); } // Provide default ceed resource if not specified if (!ceed_flag) { const char *ceed_resource = "/cpu/self"; strncpy(app_ctx->ceed_resource, ceed_resource, 10); } // Determine number of levels switch (app_ctx->multigrid_choice) { case MULTIGRID_LOGARITHMIC: app_ctx->num_levels = ceil(log(app_ctx->degree) / log(2)) + 1; break; case MULTIGRID_UNIFORM: app_ctx->num_levels = app_ctx->degree; break; case MULTIGRID_NONE: app_ctx->num_levels = 1; break; } // Populate array of degrees for each level for multigrid PetscCall(PetscMalloc1(app_ctx->num_levels, &(app_ctx->level_degrees))); switch (app_ctx->multigrid_choice) { case MULTIGRID_LOGARITHMIC: for (int i = 0; i < app_ctx->num_levels - 1; i++) app_ctx->level_degrees[i] = pow(2, i); app_ctx->level_degrees[app_ctx->num_levels - 1] = app_ctx->degree; break; case MULTIGRID_UNIFORM: for (int i = 0; i < app_ctx->num_levels; i++) app_ctx->level_degrees[i] = i + 1; break; case MULTIGRID_NONE: app_ctx->level_degrees[0] = app_ctx->degree; break; } PetscFunctionReturn(PETSC_SUCCESS); };