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* test: hostile-params test runs under small session work caps Session gains Limits, the defaults of mesh.tet.generate's max_steiner and max_tets (production values unchanged; a parameter still overrides them; file.open keeps them). The registry-wide hostile-params test runs on sessions with small caps, so the needle-triangle tessellation it meshes is refused at once instead of meshing to the 50k Steiner cap: the engine test binary drops from ~350 s to ~20 s locally. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * ci: move heavy tests to a heavy job on main, nightly and on demand Four slow tests are #[ignore = "heavy: ..."] (every corpus recipe, the cantilever convergence study, the explicit-vs-modal cantilever period, the generic-predicate rational cross-check); fast representative tests of each area stay in the PR gate. cargo xtask test --heavy runs every ignored test (benchmarks included) and the doc tests; cargo xtask test and ci run the rest without the doc tests. The new heavy CI job runs it on pushes to main, nightly and on workflow_dispatch. Branch jobs restore main's rust cache and no longer save their own. AGENTS.md documents the rule. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm * test: the three slow LBM verification cases run in the heavy job The Stokes-drag sphere array, the staircase-pipe convergence study and the developing-channel case are heavy (21 s, 11 s, 6 s alone); plane Poiseuille, Couette, Taylor-Green, reproducibility and the stability limits stay in the PR gate. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NmAttHhUZTokgPeEJia8sm --------- Co-authored-by: jyviko <2501648+jyviko@users.noreply.github.com> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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ModelCraft
An open-source, clean-room CAE modeling application in pure Rust: geometry to analysis-ready finite element models, with robust tetrahedral and hexahedral meshing, solver decks for Abaqus, Nastran and LS-DYNA, and its own linear static and modal solver. Desktop, browser and AI agents drive the same commands.
Status: early. The workspace, quality gates, the FE model, the command engine and the geometry boundary (SolidCraft's kernel and tessellator) are in place; meshing is next. See ROADMAP.md.
Build
cargo xtask ci # fmt, assets, licences, layers, clippy, tests, wasm
cargo xtask test --heavy # the heavy (ignored) tests and the doc tests
cargo run -p modelcraft-cli -- commands # every command and its parameters
cargo run -p modelcraft-cli -- run script.json # run a command script
Rust 1.95 or later, with the wasm32-unknown-unknown target for cargo xtask ci.
Documentation
- Architecture: crates, layers and the meshing pipeline
- Libraries and licences
- Contributing and agent instructions
License
Dual-licensed under MIT or Apache-2.0, at your option. Notices are in NOTICE; third-party licences in THIRD-PARTY-LICENSES.txt.
ModelCraft is an independent project, not affiliated with, sponsored or endorsed by Dassault Systèmes, MSC Software, Siemens or Ansys. Abaqus, Nastran, MSC Nastran, Simcenter Nastran and LS-DYNA are trademarks of their owners and are named only to describe file compatibility.