Exact autodiff Hessian-vector product for the VMEC force#23

Draft

krystophny wants to merge 103 commits into

internal-hvpfrom

exact-hvp-integration

Commits on Jun 14, 2026

examples: adjoint boundary sensitivities; SIMSOPT analytic gradient
krystophny
committed
examples: fix adjoint on 3D (GMRES for indefinite Hessian) + globalize
krystophny
committed
ideal_mhd_model: share the local force-density composition
krystophny
committed
enzyme: plugin JVP entry point for the exact force Hessian
krystophny
committed
ideal_mhd_model: exact force Hessian-vector product wrapper
krystophny
committed
Merge branch 'internal-hvp' into exact-hvp-integration
krystophny
committed
pybind: exact Hessian-vector product end-to-end (MHD + lambda)
krystophny
committed
ideal_mhd_model: add the constraint force to the exact HVP composition
krystophny
committed
ideal_mhd_model: composed==production diagnostic; gate zeroZ in exact HVP
krystophny
committed
exact HVP: correct geometry tangent and constraint reference -> exact==FD
krystophny
committed
examples: add exact-autodiff-HVP Newton-Krylov solver
krystophny
committed
exact HVP: analytic geometry tangent, no finite difference, no full update
krystophny
committed
Merge branch 'simsopt-adjoint' into exact-hvp-integration
krystophny
committed
exact HVP: cache the primal geometry across Krylov matvecs
krystophny
committed
exact HVP: differentiate the ncurr=1 chi' term -> exact on cth_like
krystophny
committed
examples: reproducible benchmarks for the exact HVP and adjoint gradient
krystophny
committed
adjoint: use the exact autodiff HVP in the boundary gradient (SIMSOPT)
krystophny
committed
optimizers: Eisenstat-Walker forcing + lgmres -> exact-HVP Newton beats JFNK
krystophny
committed
fix CI: formatting (ruff/docformatter/clang-format) + SIMSOPT gradient fallback
krystophny
committed
apply pre-commit formatting (ruff, docformatter, clang-format)
krystophny
committed
clang-tidy: drop dead store in composition; use reinterpret_cast in JVP wrapper
krystophny
committed
bazel: declare shared force-chain kernel + autodiff headers in ideal_mhd_model
krystophny
committed
ci: skip benchmark result upload on fork PRs (token is read-only)
krystophny
committed
ci: build VMEC2000 from source so the compat test runs on numpy 2
krystophny
committed
test: skip vmecpp-only indata fields in the VMEC2000 compat subset
krystophny
committed
ci: skip benchmark result upload on fork PRs (token is read-only)
krystophny
committed
ci: build VMEC2000 from source so the compat test runs on numpy 2
krystophny
committed
test: skip vmecpp-only indata fields in the VMEC2000 compat subset
krystophny
committed

Commits on Jun 15, 2026

Commits on Jun 24, 2026

Commits on Jun 27, 2026

Commits on Jul 8, 2026

Commits on Jul 9, 2026

Commits on Jul 10, 2026