v0.10.1

What's Changed

Bug fixes

• Expand high-level operands in external operators by @a-latyshev in #37
• Fix operand evaluation by @a-latyshev in #43

New features

• Add handling of adjoint and other floating types by @jorgensd in #32
• Use ufl.DAGTraverser to work through forms when replacing ufl.ExternalOperator by @jorgensd in #34
• Support for nested external operators by @jorgensd in #40

Full Changelog: v0.10.0...v0.10.1

v0.10.0.pos1

This post-release is published to create a proper package on PyPi and test the associated workflows.

What's Changed

• Add handling of adjoint and other floating types by @jorgensd in #32
• @jorgensd is the official co-developer #41

Full Changelog: v0.10.0...v0.10.0.post1

v0.10.0

What's Changed

This is a major release of dolfinx-external-operator, compatible with v0.10.0 of DOLFINx.

Principal changes

• No more extra memory allocation for intermediate external operators created by the UFL AD (see #25).
• New interface to call external functions from the new NonlinearProblem of DOLFINx, which is a wrapper for SNES: #29.

The users are supposed to wrap the external callbacks, which will be called from the Newton solver, with assemble_residual_with_callback (https://github.com/a-latyshev/dolfinx-external-operator/blob/main/src/dolfinx_external_operator/petsc/petsc.py). See tutorials for a concrete example: https://a-latyshev.github.io/dolfinx-external-operator/demo/demo_plasticity_mohr_coulomb.html#solving-the-problem.

Features and API changes

• Fix sign of Newton update by @jhale in #13
• Fix. by @jhale in #14
• Fix sign in von Mises demo by @jhale in #16
• Update external operator interface by @jorgensd in #17
• Convert von Mises plasticity to use DOLFINx Newton Solver by @jhale in #15
• Newton solvers with external callbacks by @a-latyshev in #19
• Fix external operators detection by @a-latyshev in #25
• Add lower restrictions on dolfinx and ufl version by @janmirco in #21
• Upgrade to v0.10.0 by @a-latyshev in #26
• Final interface for external callbacks in NonlinearProblem by @a-latyshev in #29
• Actions as before by @a-latyshev in #31
• Fix external operator for recursive call of action by @jorgensd in #28
• Early exit if no external operator by @jorgensd in #30

New Contributors

• @janmirco made their first contribution in #21

Known issues

• Handling high-order differentiation of forms with FEMExternalOperator-s #33

Full Changelog: v0.9.0...v0.10.0

v0.9.0

Compatible with dolfinx v0.9.0: https://github.com/FEniCS/dolfinx/releases/tag/v0.9.0

v0.8.0

• The versioning of dolfinx-external-operator now repeats the one of dolfinx to highlight compatibility.
• Enable pytest-s
• Switch license to LGPLv3
• Improve tutorials: https://a-latyshev.github.io/dolfinx-external-operator/

v.0.0.1

The following demos are available:

1. Nonlinear heat equation
2. von Mises plasticity with isotropic hardening implemented via Numba
3. Mohr-Coulomb model with non-associative plasticity law implemented via JAX