Hello everyone! This is deal.II newsletter #158. 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: #11940: Add bcast function (proposed by bergbauer) https://github.com/dealii/dealii/pull/11940 #11939: a new class TimerTree for flexible and modular timer measurements (proposed by nfehn) https://github.com/dealii/dealii/pull/11939 #11938: LinearAlgebra::ReadWriteVector accept serial vectors (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11938 #11937: Move `DoFHandler::prepare_c_and_r()` to `hp::Refinement::limit_plevel_difference()`. (proposed by marcfehling) https://github.com/dealii/dealii/pull/11937 #11936: Better document IdentityFunction. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/11936 #11935: Fix some links in the AD/SD documentation module (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/11935 #11934: Introduce hp::Collection (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11934 #11933: Use the correct file extension. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/11933 #11932: Move implementation of functions into the .cc file. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/11932 #11931: Some cosmetics in source/hp/fe_values.cc (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11931 #11930: Use correct invalid unsigned value for 64 bit integers (2) (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11930 #11929: Treat cells to be h-coarsened as their parent in DoFHandler::prepare_coarsening_and_refinement(). (proposed by marcfehling) https://github.com/dealii/dealii/pull/11929 #11928: Minor improvements regarding local_cell_relations. (proposed by marcfehling) https://github.com/dealii/dealii/pull/11928 #11927: Identity function (proposed by drwells; merged) https://github.com/dealii/dealii/pull/11927 #11926: Minor work on step-15 (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/11926 #11925: Simplex: DataOut::attach_triangulation() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11925 #11924: DataOut::build_patches(): make mapping dependent on tria (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11924 #11923: Fix date of changelog (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/11923 #11922: Fix storage of boundary_id in MatrixFree (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/11922 #11921: step-67 simplex test (proposed by zjiaqi2018; merged) https://github.com/dealii/dealii/pull/11921 #11920: Document that adaptation flags need to be placed on all procs for p:s:Tria. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/11920 #11919: examples/step-69: use std::copy_n instead of std::copy (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/11919 #11918: [WIP] MappingQCache: setup multigrid levels with RemotePointEvaluation (proposed by peterrum) https://github.com/dealii/dealii/pull/11918 #11917: No need to futz with the VTK flags in step-15. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/11917 #11916: Debugging (proposed by peterrum) https://github.com/dealii/dealii/pull/11916 #11915: Use correct invalid unsigned value for 64 bit integers (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/11915 #11914: Enable QGaussSimplex<0> (proposed by mschreter; merged) https://github.com/dealii/dealii/pull/11914 #11913: Use std::pair for local_cell_relations (proposed by elauksap; merged) https://github.com/dealii/dealii/pull/11913 #11910: Extend text regarding allow_artificial_cells (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11910 #11909: Fix grammar. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/11909 #11908: Update SUNDIALS KINSOL interfaces to their current master (proposed by bangerth) https://github.com/dealii/dealii/pull/11908 #11907: Fix a space issue in an exception text. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/11907 #11906: Remove includes from tutorials (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11906 #11905: Fix refinement flags in mpi/prepare_coarsening_and_refinement_03(). (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/11905 #11903: Add some tests for the MeshWorker::ScratchData::get_*() functions (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/11903 #11901: Fix TriangulationBase::reset_global_cell_indices() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11901 #11900: SD BatchOptimizer: Implement cached evaluation (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/11900 #11899: Add general product type between tensors and SD Expressions (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/11899 #11898: Add get_laplacians to MeshWorker::ScratchData (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/11898 #11897: Add const version of MeshWorker::ScratchData::get_general_data_storage() (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/11897 #11896: Store locally-relevant dofs in DoFHandler (proposed by peterrum) https://github.com/dealii/dealii/pull/11896 #11895: Step 74: fix latex formatting (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11895 #11893: Make constructor of DoFHandler explicit (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11893 #11891: Remove outdated comment of DoFCellAccessor::get_dof_indices() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11891 #11890: Add assert that DoFCellAccessor::get/set_mg_dof_indices() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11890 #11888: Refactored order of data transfer in p:d::Tria. (proposed by marcfehling) https://github.com/dealii/dealii/pull/11888 #11887: Update documentation about an MPI 3.x feature. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/11887 #11883: Improve an error message. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/11883 #11867: Add new MappingQCache::initialize() function (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11867 #11804: Add utility functions to evaluate values of arbitrary (remote) points (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/11804 ## And this is a list of recently opened or closed discussions: #11912: Extend MappingQGeneric::initialize() with ComponentMask (opened) https://github.com/dealii/dealii/issues/11912 #11911: Should we do p:d:Triangulation::construct_multigrid_hierarchy unconditionally? (opened) https://github.com/dealii/dealii/issues/11911 #11904: MatrixFree Multigrid fails with unaligned access when using float (opened and closed) https://github.com/dealii/dealii/issues/11904 #11902: Test sharedtria/hp_choose_p_over_h.mpirun=2.debug fails (opened) https://github.com/dealii/dealii/issues/11902 #11894: New postprocessing functions? (opened) https://github.com/dealii/dealii/issues/11894 #11892: MappingQGeneric: check if data for multigrid levels are available (opened) https://github.com/dealii/dealii/issues/11892 #11889: floating point exception in step-67 (opened) https://github.com/dealii/dealii/issues/11889 #11886: Update comment DoFCellAccessor::get_dof_indices() (closed) https://github.com/dealii/dealii/issues/11886 #11860: Generalize global_active_cell_index for p:s:T (without artificial cells) (closed) https://github.com/dealii/dealii/issues/11860 #11166: Make MatrixFree work for simplex meshes (closed) https://github.com/dealii/dealii/issues/11166 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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