Hello everyone! This is deal.II newsletter #291. 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: #17262: Make a 'Mapping' object 'const'. (proposed by bangerth) https://github.com/dealii/dealii/pull/17262 #17261: Remove an unnecessary 'typename' in step-19. (proposed by bangerth) https://github.com/dealii/dealii/pull/17261 #17259: CMake: Explain why we disable dynamic linking on Windows. (proposed by marcfehling) https://github.com/dealii/dealii/pull/17259 #17258: step-29 no longer uses deallog. Update output in results.dox accordingly. (proposed by bangerth) https://github.com/dealii/dealii/pull/17258 #17257: Fix Tpetra types for older Trilinos (proposed by jpthiele; merged) https://github.com/dealii/dealii/pull/17257 #17256: Default SolverControl to not print to deallog. (proposed by bangerth) https://github.com/dealii/dealii/pull/17256 #17255: Updates to the LogStream documentation. (proposed by bangerth) https://github.com/dealii/dealii/pull/17255 #17254: step-87: Clear ghost values in a vector (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/17254 #17252: Add DiscreteTime::serialize() and DiscreteTime::memory_consumption() (proposed by pcafrica; merged) https://github.com/dealii/dealii/pull/17252 #17248: testing of step-80 to step-89 (proposed by vyushut) https://github.com/dealii/dealii/pull/17248 #17245: testing step-70 to step-79 (proposed by vyushut; merged) https://github.com/dealii/dealii/pull/17245 #17244: Add `face_to_cell_index_nodal` for simplex elements (proposed by dominiktassilostill) https://github.com/dealii/dealii/pull/17244 #17243: Build docker image for ghcr first, then push to Dockerhub (proposed by gassmoeller; merged) https://github.com/dealii/dealii/pull/17243 #17242: Fix MSVC warning in step-63. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/17242 #17241: Fix ghost update for step-66 (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/17241 #17240: Leave another comment in the documentation of SUNDIALS::IDA. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/17240 #17239: Provide a better error message. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/17239 #17238: AffineConstraints: Fix compile warning in new code (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/17238 #17237: Fix doxygen warnings (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/17237 #17235: Augment the documentation of some PETScWrapper::TimeStepper callbacks. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/17235 #17234: Add a test that checks backward compatibility. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/17234 #17233: Rename a third callback in PETScWrappers::TimeStepper. (proposed by bangerth) https://github.com/dealii/dealii/pull/17233 #17232: Testing step-60 to step-69. (proposed by vyushut) https://github.com/dealii/dealii/pull/17232 #17231: Add instantiations to dof_renumbering.inst.in (proposed by labdala; merged) https://github.com/dealii/dealii/pull/17231 #17230: Make `fe` `const` in `matrix_free/util.h` (proposed by dominiktassilostill; merged) https://github.com/dealii/dealii/pull/17230 #17229: ReadWriteVector: correctly copy an index set with no elements. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/17229 #17228: Add missing deprecation. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/17228 #17227: Update copyright years (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/17227 #17226: fix tests/sundial/n_vector.cc for sundials 7 (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/17226 #17225: fix tests/numerics/nonlinear_solver_selector_01 (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/17225 #17224: fix tests/sundials/kinsol_08 warning (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/17224 #17223: fix tests/examples/step-40 (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/17223 #17222: Rework and restructure type definitions of TpetraWrappers classes (proposed by jpthiele; merged) https://github.com/dealii/dealii/pull/17222 #17221: distributed::Triangulation: broadcast p4est checksum over all ranks (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/17221 #17220: fix compilation by putting back std::move() (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/17220 #17217: CMake: fix release/debug only configure with CMake 3.30 (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/17217 #17215: CMake: Bugfix: only set up valgrind wrapper when needed (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/17215 #17214: Add FETools::compute_nodal_quadrature(). (proposed by drwells; merged) https://github.com/dealii/dealii/pull/17214 #17212: Fix deal_II_exceptions::internal::abort [[noexcept]] attribute for old Kokkos (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/17212 #17211: add tests/feinterface/stokes_simplex (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/17211 #17208: Fix CppCheck complaints (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/17208 #17207: Fix clang-tidy findings (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/17207 #17206: Run codespell. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/17206 #17205: Add QSupportPointsSimplex (proposed by dominiktassilostill; merged) https://github.com/dealii/dealii/pull/17205 #17187: Add accessor functions for essential geometric properties of the Manifold classes. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/17187 #17165: testing of step-40 to step-49 (proposed by vyushut; merged) https://github.com/dealii/dealii/pull/17165 #14905: Add consistent strategy to merge constraints in parallel (proposed by bergbauer; merged) https://github.com/dealii/dealii/pull/14905 ## And this is a list of recently opened or closed discussions: #17263: Regression tester regressed edd46a (opened) https://github.com/dealii/dealii/issues/17263 #17260: Make 'mapping' variables 'const'. (opened) https://github.com/dealii/dealii/issues/17260 #17253: Regression tester regressed 480c89 (opened and closed) https://github.com/dealii/dealii/issues/17253 #17251: Formatting numbers in SolverControl. (opened) https://github.com/dealii/dealii/issues/17251 #17250: Make DiscreteTime serializable. (opened and closed) https://github.com/dealii/dealii/issues/17250 #17249: In the tutorials, put 'using namespace dealii' into the StepXX namespace. (opened) https://github.com/dealii/dealii/issues/17249 #17247: Use std::ignore=x; instead of (void)x; (opened) https://github.com/dealii/dealii/issues/17247 #17246: step-87 crashes. (opened and closed) https://github.com/dealii/dealii/issues/17246 #17236: step-66 crashes with MPI ranks more than 1. (opened and closed) https://github.com/dealii/dealii/issues/17236 #17219: Enhancement idea: Vector view (opened and closed) https://github.com/dealii/dealii/issues/17219 #17218: Tpetra Wrappers shallow copy constructor from `dealii::Vector` (opened) https://github.com/dealii/dealii/issues/17218 #17216: Trilinos wrappers: Assert program is not distributed when using `operator=(dealii::Vector)` (opened) https://github.com/dealii/dealii/issues/17216 #17213: State of Regression Tester (opened) https://github.com/dealii/dealii/issues/17213 #17197: Building docker images via github-actions fails. (closed) https://github.com/dealii/dealii/issues/17197 #16671: Make Tpetra wrapper size_type definitions uniform. (closed) https://github.com/dealii/dealii/issues/16671 #15044: Sort vertices by the order in which we traverse them (closed) https://github.com/dealii/dealii/issues/15044 #8446: step-2 extension: print dof locations (closed) https://github.com/dealii/dealii/issues/8446 A list of all major changes since the last release can be found at https://www.dealii.org/developer/doxygen/deal.II/recent_changes.html. Thanks for being part of the community! Let us know about questions, problems, bugs or just share your experience by writing to [email protected], or by opening issues or pull requests at https://www.github.com/dealii/dealii. 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