Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.7.0] - 2026-03-10

Complete rework of patch-based smoothers. Since PR#94. List of breaking changes:
- All the patch machinery has been removed (PatchDecomposition, PatchFESpace, PatchTriangulation, etc...) in favour of the new Gridap patch machinery (since Gridap v0.19).
- The old PatchBasedLinearSolver has been renamed to PatchSolver and now uses the new patch machinery. The constructors are similar but should be simpler and more flexible/robust. This still integrates the blocks on demand.
- The old VankaSolver has been renamed to BlockJacobiSolver and has been extended to distributed. It it now an alternative to PatchSolver where the local problems are extracted directly from the matrix instead of re-computing the local problems (and are equivalent if the patched weakform coincides with the original problem).
- PatchProlongationOperator now uses the new PatchSolver machinery. A new operator BlockJacobiProlongationOperator has been added, which is equivalent but uses the BlockJacobiSolver machinery.

GMGLinearSolver now supports F- and W-cycles on top of the existing V-cycle. The iteration type can be now chosen through the cycle_type kwarg. Since PR#94.
Non-preconditioned CG solver is now also available. Added Lanczos eigenvalue add-on for CG solvers to compute approximations of the . Since PR#94.

Added support for the HPDDM library, with a new solver HPDDMLinearSolver. Since PR#95.

Removed the ModelHierarchy from the GMGLinearSolver constructors. This should allow more flexibility for the GMG solver (for instance, to create a P-GMG). Since PR#92.

Moved dependencies for GridapP4est, GridapPETSc and IterativeSolvers into extensions (i.e weak dependencies). Since PR#76.

A changelog is not maintained for older versions than 0.4.0.