Hello everyone! This is deal.II newsletter #213. 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: #13820: Refactor grid fixup functions (proposed by drwells) https://github.com/dealii/dealii/pull/13820 #13819: [9.3] Take over doxygen fixes (proposed by tamiko) https://github.com/dealii/dealii/pull/13819 #13818: Step-40: Remove an unmatched single quote (proposed by tamiko) https://github.com/dealii/dealii/pull/13818 #13817: Remove now obsolete CellDataTransferBuffer (proposed by kronbichler) https://github.com/dealii/dealii/pull/13817 #13816: Use GridTools::exchange_cell_data_on_ghosts for DoF renumbering (proposed by kronbichler) https://github.com/dealii/dealii/pull/13816 #13815: ParameterHandler::print_parameters(): Demangle JSON (proposed by mschreter) https://github.com/dealii/dealii/pull/13815 #13814: NonMatching: Compute exact coupling mass matrix and exact sparsity pattern (proposed by fdrmrc) https://github.com/dealii/dealii/pull/13814 #13813: Utilities: Fix compile error on certain compilers (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13813 #13812: Remove unnecessary MPI barriers (proposed by kronbichler) https://github.com/dealii/dealii/pull/13812 #13811: Optimize Utilities::pack for std::vector<std::vector<trivial>> (proposed by kronbichler) https://github.com/dealii/dealii/pull/13811 #13810: Assert reference cell is hypercube in Discrete*QuadratureGenerator (proposed by simonsticko; merged) https://github.com/dealii/dealii/pull/13810 #13809: Adjust output of tests using PreconditionChebyshev (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13809 #13808: [9.5] Removed hp::DoFHandler. (proposed by marcfehling) https://github.com/dealii/dealii/pull/13808 #13807: Compute Quadrature formula over a general poly (proposed by fdrmrc) https://github.com/dealii/dealii/pull/13807 #13806: [WIP] FEPointEvaluation for dim!=spacedim (proposed by peterrum) https://github.com/dealii/dealii/pull/13806 #13805: Fix test dependencies (proposed by drwells) https://github.com/dealii/dealii/pull/13805 #13804: Fix doxygen entry Chronopoulos1989. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/13804 #13803: Fix some miscellaneous typos. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13803 #13802: Avoid CellDataTransferBuffer in GridTools::exchange_cell_data_to_ghosts (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13802 #13801: Avoid a second copy in Utilities::pack for vector arguments (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13801 #13800: Slightly simplify setup of partitioners for global cell ids (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13800 #13799: Fix compilation of Utilities::pack with std::vector<bool> (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13799 #13798: Provide function to evaluate polynomial on array of positions (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13798 #13797: Fix bug in FEEvaluation without vectorization (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13797 #13796: Fix two tests with vectorization disabled (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13796 #13795: Add some missing MPI boolean instantiations. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13795 #13793: Require SUNDIALS 5.4 or later. (proposed by drwells) https://github.com/dealii/dealii/pull/13793 #13792: PreconditionChebyshev: Implement power iteration for eigenvalue estimate (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13792 #13791: Reduce cost to set up dictionary for compute_index_owner (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13791 #13790: MatrixFree: Simplify initialization of ShapeInfo (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13790 #13789: Clearify LA::d::BlockVector::reinit input argument (proposed by gfcas; merged) https://github.com/dealii/dealii/pull/13789 #13788: Kinsol sundials 6 (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13788 #13787: Massively lower some IDA solver tolerances. (proposed by drwells) https://github.com/dealii/dealii/pull/13787 #13786: Fix ARKODE for SUNDIALS 6. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13786 #13785: Add an exception for commits from dependabot. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13785 #13784: Optimize pack()/unpack() for std::vector<T> with trivially copyable T. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/13784 #13783: TBB oneAPI: make global_control object static (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/13783 #13781: Bump actions/upload-artifact from 1 to 3 (proposed by dependabot[bot]; merged) https://github.com/dealii/dealii/pull/13781 #13780: Bump docker/build-push-action from 2 to 3 (proposed by dependabot[bot]; merged) https://github.com/dealii/dealii/pull/13780 #13779: Bump actions/cache from 2 to 3 (proposed by dependabot[bot]; merged) https://github.com/dealii/dealii/pull/13779 #13778: Bump docker/setup-buildx-action from 1 to 2 (proposed by dependabot[bot]; merged) https://github.com/dealii/dealii/pull/13778 #13777: Bump docker/login-action from 1 to 2 (proposed by dependabot[bot]; merged) https://github.com/dealii/dealii/pull/13777 #13776: Give a shell script a proper suffix. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/13776 #13775: Update copyright years. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/13775 #13774: Added dependabot for github-actions. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/13774 #13773: Refactor function parser (proposed by drwells) https://github.com/dealii/dealii/pull/13773 #13772: Doxygen: Ensure that opening and closing glossary quotes are on the same line (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/13772 #13771: CGAL: Add remesh_surface utility (proposed by fdrmrc) https://github.com/dealii/dealii/pull/13771 #13770: Minor code updates to create_right_hand_side (proposed by gfcas; merged) https://github.com/dealii/dealii/pull/13770 #13769: Remove ConsensusAlgorithms::AnonymousProcess. (proposed by bangerth) https://github.com/dealii/dealii/pull/13769 #13768: Consensus Algorithms: Move template functions into .h file. (proposed by bangerth) https://github.com/dealii/dealii/pull/13768 #13767: Create a Triangulation<3> from a Triangulation<2,3> (proposed by fdrmrc) https://github.com/dealii/dealii/pull/13767 #13766: Implement pyramid volume and fix wedge volume. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13766 #13765: Remove std::abs() from the tet volume calculation. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13765 #13763: Fix compile error of test on certain compilers (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13763 #13762: Use std::call_once() instead of hand-rolling a solution. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/13762 #13761: Properly indent a cmake command. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/13761 #13760: Test robustness2 (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13760 #13759: CMake: Do not configure CGAL with bundled boost (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/13759 #13758: Add a comment explaining BOOST_DEFINITIONS (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13758 #13757: CMake: Avoid a CMake policy warning (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/13757 #13756: MatrixFree: Add instantiation for ConstraintValues::insert_entries (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13756 #13755: Make multigrid test more robust (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/13755 #13754: Convert a deal.II tria to a CGAL::Surface_mesh (proposed by fdrmrc; merged) https://github.com/dealii/dealii/pull/13754 #13753: Variadic template parameter for CGAL Mesh criteria (proposed by fdrmrc) https://github.com/dealii/dealii/pull/13753 #13752: Fix compute_index_owner_01. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/13752 #13751: Check for range of function calls in bfgs tests. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/13751 #13745: Avoid doing extra TLS lookups in FunctionParser. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13745 #13741: Fix sundials 6 tests, part 1 (proposed by drwells; merged) https://github.com/dealii/dealii/pull/13741 #13735: CGAL C3T3 to deal.II Triangulation. (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/13735 #13721: step-40: update IO section (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/13721 #13642: Matrix-free Piola transformation for affine cells (proposed by NiklasWik; merged) https://github.com/dealii/dealii/pull/13642 #13611: embed BigMPICompat library (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/13611 #12664: Unghost matrix diagonals (proposed by drwells; merged) https://github.com/dealii/dealii/pull/12664 ## And this is a list of recently opened or closed discussions: #13794: Undefined reference to void Utilities::MPI::internal::all_reduce<bool>() (opened and closed) https://github.com/dealii/dealii/issues/13794 #13782: TBB oneAPI: thread concurrency limiting does not get applied. (opened and closed) https://github.com/dealii/dealii/issues/13782 #13764: Resolving external library interdependencies (opened) https://github.com/dealii/dealii/issues/13764 #13584: Get rid of std::abs() when computing tet volumes (closed) https://github.com/dealii/dealii/issues/13584 #13578: TLS is quite slow (closed) https://github.com/dealii/dealii/issues/13578 #12660: Don't use ghosted vectors in `MatrixFreeOperators::get_matrix_diagonal()` et al (closed) https://github.com/dealii/dealii/issues/12660 #12141: Rework BOOST_DEFINITIONS (closed) https://github.com/dealii/dealii/issues/12141 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 dealii@googlegroups.com, or by opening issues or pull requests at https://www.github.com/dealii/dealii. 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