deal.II Newsletter #354
Rene Gassmoeller
Hello everyone!
This is deal.II newsletter #354.
It automatically reports recently merged features and discussions about the deal.II finite element library.
Below you find a list of recently proposed or merged features:
#19685: Fix an issue with deprecated functions. (proposed by bangerth)
#19684: Add tests for the Python tria accessor wrappers. (proposed by bangerth)
#19683: Bump https://github.com/crate-ci/typos from v1.46.0 to 1.46.1 (proposed by dependabot[bot])
#19682: Introduce ReferenceCells::n_vertices_to_reference_cell(). (proposed by bangerth)
#19681: Allow compiling for modules without symengine enabled. (proposed by bangerth)
#19680: Ensure index>=0 in AssertIndexRange. (proposed by bangerth)
#19679: Create copies of arguments in exception-related functions. (proposed by bangerth)
#19678: Add a test case. (proposed by bangerth)
#19677: Improve checking for errors. (proposed by bangerth)
#19675: Extend affine_cell_approximation to simplex and mixed cells (proposed by HarshaMatta)
#19674: C++20 Modules: Allow enabling SymEngine (proposed by masterleinad; merged)
#19673: MatrixCreator: use an exemplar vector. (proposed by drwells; merged)
#19672: TriaLevel: add getters and setters for the vertex index cache. (proposed by drwells; merged)
#19671: TriaObjectsOrientations: make types consistent with other places. (proposed by drwells; merged)
#19670: Add documentation for template parameters to the MatrixFree::LaplaceOperator (proposed by mschreter; merged)
#19668: Arbitrary order support points for simplices (proposed by dominiktassilostill; merged)
#19667: Nodal basis for wedges (proposed by dominiktassilostill)
#19665: Fix some more dependencies in modules CI (proposed by masterleinad; merged)
#19664: See if we can do 'import std'. (proposed by bangerth)
#19662: Nodal basis for simplices (proposed by dominiktassilostill)
#19661: Arkode: add option to pick the integrator Butcher tables (explicit and implicit) (proposed by vovannikov; merged)
#19660: SolutionTransfer: reuse a cell buffer. (proposed by drwells; merged)
#19659: Use unpreconditioned residual norm in PETScWrappers::SolverCG (proposed by Stuwon; merged)
#19657: Fix grammar. (proposed by marcfehling; merged)
#19656: Remove a workaround for clang-20. (proposed by bangerth; merged)
#19655: Fix CGAL source files for modules (proposed by masterleinad; merged)
#19654: Add clang-23 module build using deal.II's noble image (proposed by masterleinad; merged)
#19653: Fix typos. (proposed by bangerth; merged)
#19652: Fix grammar mistakes on the doxygen front page. (proposed by bangerth; merged)
#19651: Avoid some uses of GeometryInfo. (proposed by bangerth; merged)
#19649: Bump https://github.com/gitleaks/gitleaks from v8.30.0 to 8.30.1 (proposed by dependabot[bot]; merged)
#19648: Bump https://github.com/crate-ci/typos from v1.44.0 to 1.46.0 (proposed by dependabot[bot]; merged)
#19647: DynamicSparsityPattern: lower the number of allocations. (proposed by drwells; merged)
#19646: Let dependabot also check for updates in pre-commit ecosystem. (proposed by marcfehling; merged)
#19644: Improve an error message from the checkdoxygen.py script. (proposed by bangerth; merged)
#19643: Use clang-21 for the module builds. (proposed by bangerth)
#19642: Split external module wrappers into public/private sets. (proposed by bangerth; merged)
#19641: Export more symbols. (proposed by bangerth; merged)
#19640: Fix supported CMake policy comment (proposed by tnschmid; merged)
#19639: TimeStepping::ExplicitRungeKutta: add HEUN_EULER (proposed by peterrum; merged)
#19638: Arkode: include sundials_context.h into invocation_context.h (proposed by vovannikov; merged)
#19637: Use a better class name in step-42. (proposed by bangerth; merged)
#19636: Use unsigned integers in step-42. (proposed by bangerth; merged)
#19634: ARKode: change FunctionProxy error message (proposed by vovannikov; merged)
#19633: PreconditionBlockJacobi: simplify indexing. (proposed by drwells; merged)
#19632: Fix some unused variable warnings. (proposed by drwells; merged)
#19631: ARKode: refactor old tests to use ARKStepper (proposed by vovannikov; merged)
#19630: VTKWrappers utilities -- part XI -- vtk <-> tria + manifold/boundary/material (proposed by luca-heltai)
#19629: DataOutBase: write base64 output directly to the stream instead of a temporary `std::string`. (proposed by drwells; merged)
#19628: Fix extract_boundary_mesh for 3D simplex meshes (proposed by fdrmrc; merged)
#19627: CMake: also install bundled muparser headers (proposed by tamiko)
#19626: Isotropic pyramid refinement (proposed by AndSte01)
#19625: Avoid using Kokkos::max (proposed by masterleinad; merged)
#19624: Add exports used in the tutorials. (proposed by bangerth; merged)
#19623: Use std::cos instead of ::cos in step-32. (proposed by bangerth; merged)
#19622: Use AssertThrow to test a run-time condition in step-70. (proposed by bangerth; merged)
#19621: Create directories with <filesystem> instead of ::mkdir in step-42. (proposed by bangerth; merged)
#19620: Move an #include statement in step-72. (proposed by bangerth; merged)
#19619: Qualify function calls with std:: in step-100. (proposed by bangerth; merged)
#19618: Avoid some warnings about signed/unsigned comparisons. (proposed by bangerth)
#19616: Portable::MatrixFree: move AdditionalData check (proposed by tjhei; merged)
#19615: Arkode: add tests for the backwards compatibility interface (proposed by vovannikov; merged)
#19614: High order simplex quadrature (proposed by dominiktassilostill)
#19613: Exploit constexpr in GMRES implementation. (proposed by bangerth; merged)
#19612: Only conditionally export symbols. (proposed by bangerth; merged)
#19609: Update lukka/get-cmake requires updating Kokkos. (proposed by marcfehling)
#19607: Add signed distance function for infinite cylinder (proposed by mschreter; merged)
#19606: Provide a module wrapper with the right include file. (proposed by bangerth; merged)
#19605: Some more exports. (proposed by bangerth; merged)
#19603: Convert a source file for module structure. (proposed by bangerth; merged)
#19602: Small allocation improvements (proposed by drwells; merged)
#19601: Add a function for extracting cell vertices without using the cache. (proposed by drwells; merged)
#19600: ReferenceCell: make a lot more functions constexpr. (proposed by drwells)
#19598: Provide ArrayView with a proper copy constructor. (proposed by bangerth; merged)
#19597: Add a version of GridGenerator::cheese() for voxelized meshes. (proposed by bangerth; merged)
#19596: Fix GridGenerator::cheese() in 3d. (proposed by bangerth; merged)
#19594: Minor improvements to GridGenerator::cheese(). (proposed by bangerth; merged)
#19593: Introduce base class for orthogonal basis evaluation (proposed by dominiktassilostill; merged)
#19592: Portable::MatrixFree: Introduce DoFInfo and MappingInfo on host (proposed by tjhei; merged)
#19590: [ARKODE] Rename `ARKStepper::mass_times_setup` `ARKStepper::mass_times_vector_setup` and fix user data in `ARKStepSetMassTimes` (proposed by vovannikov; merged)
#19589: ARKode: do not deprecate AdditionalData() (proposed by tjhei; merged)
#19588: Make ARKStepper::AdditionalData ctor explicit (proposed by tjhei; merged)
#19587: Minor changes to step-97 (proposed by cembooks; merged)
#19585: Export more SLEPc names. (proposed by bangerth; merged)
#19584: Make files play well with modules. (proposed by bangerth; merged)
#19582: Allow using KINSOL with TpetraWrappers (proposed by masterleinad; merged)
#19581: Fix Tpetra vector swap and assignment. (proposed by gassmoeller; merged)
#19580: `face_to_cell_line_orientation` for wedges (proposed by dominiktassilostill; merged)
#19579: Remove taskflow includes from SparseVanka. (proposed by marcfehling; merged)
#19578: Deal with OpenCASCADE module shenanigans. (proposed by bangerth; merged)
#19577: Unify function overloads via 'if constexpr'. (proposed by bangerth; merged)
#19576: Export a difficult function that's part of ExodusII. (proposed by bangerth; merged)
#19575: [ARKode] Add a test that checks if an exception is thrown for the proxy function objects (proposed by vovannikov; merged)
#19573: Export more OpenCASCADE functions. (proposed by bangerth; merged)
#19572: Do not embed module directives within preprocessor blocks. (proposed by bangerth; merged)
#19571: More exports for p4est. (proposed by bangerth; merged)
#19570: More exports for SUNDIALS. (proposed by bangerth; merged)
#19569: More exports for PETSc. (proposed by bangerth; merged)
#19568: More exports for namespace std and system headers. (proposed by bangerth; merged)
#19567: More exports for MPI. (proposed by bangerth; merged)
#19566: More exports for Trilinos and Exodus. (proposed by bangerth; merged)
#19565: More exports for old Kokkos versions. (proposed by bangerth; merged)
#19564: Do not use anonymous namespaces in header files. (proposed by bangerth; merged)
#19563: Avoid writing into ghosted vectors in Tpetra Vector sadd (proposed by gassmoeller; merged)
#19558: Include what you use: Remove unused header includes in .h files. (proposed by bangerth; merged)
#19544: Improve timer implementation (proposed by tnschmid; merged)
#19532: Deal with header guards when converting to modules. (proposed by bangerth; merged)
#19523: Include what you use: Let each file include explicitly what it uses. (proposed by bangerth; merged)
#19329: Use unpreconditioned norm in petsc ksp (proposed by Stuwon; merged)
#19261: implement `n_children` to output meaningful values for unrefined cells. (proposed by AndSte01; merged)
#18907: Step-100: Solving the Time-Harmonic Helmholtz equation with the Discontinuous Petrov Galerkin (DPG) method (proposed by blaisb; merged)
And this is a list of recently opened or closed discussions:
#19676 Why not make variables in fe_evaluation unsigned? (opened)
#19669 Unable to compile deal.II from source in arch linux (opened)
#19666 Regression tester regressed 418365 (opened and closed)
#19663 Can't compile modules in C++23 mode. (opened and closed)
#19658 Regression tester regressed d41b8c (opened and closed)
#19650 General status of simplex support (opened)
#19645 Regression tester regressed 6cb533 (opened)
#19635 Regression tester regressed 32c1e6 (opened and closed)
#19617 Build errors in Tpetra::SparseMatrix with Trilinos 13.2 (shipped with Ubuntu 24.04) (opened and closed)
#19611 Use of undeclared ARKodeSetOrder. (opened)
#19610 sundials/invocation_context.h is missing an include. (opened)
#19608 Regression tester regressed 1a2ab6 (opened)
#19604 Exported module interface unit still contains #include <muParser.h>. (opened and closed)
#19599 Regression tester regressed 06402e (opened and closed)
#19595 GridGenerator::cheese() doesn't actually work in 3d. (opened and closed)
#19591 Regression tester regressed ee5878 (opened and closed)
#19586 Wedge children appear to have inconsistent face orientations (opened)
#19583 clang-23 warning with ArrayView constructor. (opened and closed)
#19574 Regression tester regressed f112b1 (opened)
#19509 Python wrappers are not tested. (closed)
#19505 Regression tester regressed c5a438 (closed)
#19501 Regression tester regressed be3900 (closed)
#19486 Regression tester regressed 335786 (closed)
#19452 Regression tester regressed aee452 (closed)
#19432 Regression tester regressed eb2baf (closed)
#19427 Regression tester regressed a7a4c4 (closed)
#19104 Use std::filesystem in step-42 to create a directory. (closed)
#18066 `GridGenerator::extract_boundary_mesh()` Fails for Simplex Meshes (closed)
#17680 more general simplex mesh conversion / refinement (closed)
#17597 Post-workshop suggestion 1: make code snippets more accessible (closed)
A list of all major changes since the last release can be found at this website.
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