Hello everyone! This is deal.II newsletter #116. 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: #9784: Implement default initializer for EigenvalueInformation (proposed by masterleinad) https://github.com/dealii/dealii/pull/9784 #9783: Pass ExcNoMatch the description directly (proposed by peterrum) https://github.com/dealii/dealii/pull/9783 #9781: Fix a bug in mg ghost layer with periodicity and n_levels=1 (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9781 #9780: Output time and time step in step-26. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9780 #9779: Remove Multigrid::set_debug() (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9779 #9778: Use CMake USE_SOURCE_PERMISSIONS to install the header files (proposed by dangars) https://github.com/dealii/dealii/pull/9778 #9777: Add Python version of step-53 (proposed by agrayver) https://github.com/dealii/dealii/pull/9777 #9776: MappingInfo: Use correct update flags for face quadrature fields (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9776 #9775: Avoid unnecessary integer overflow in Utilities::pow() (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9775 #9773: Fix order of module graphs (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9773 #9772: Further try and disentangle the tutorial graph a bit. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9772 #9771: Fix broken documentation. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9771 #9770: Also make step-67 depend on step-40. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9770 #9769: Fix mapping fe field similarity (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9769 #9767: Add output variants for new MF::MappingInfo test (proposed by kronbichler) https://github.com/dealii/dealii/pull/9767 #9766: Follow-up to step-67: fix tutorial graph (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9766 #9765: Minor documentation changes for TableHandler (proposed by rezarastak; merged) https://github.com/dealii/dealii/pull/9765 #9764: Template Utilities::pow() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9764 #9763: Avoid deprecated VectorizedArray::n_array_elements (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9763 #9761: Delete BlockMatrixArray and MeanValueFilter (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9761 #9760: Introduce DoFHandlerBase (proposed by peterrum) https://github.com/dealii/dealii/pull/9760 #9759: Fix failing test dof_tools_12a (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9759 #9758: Explicitly spell dealii::parallel in multiple places (proposed by peterrum) https://github.com/dealii/dealii/pull/9758 #9755: Copy pieces of the module graph into some of the modules. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9755 #9754: Also output the current time in .vtu files in step-52. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9754 #9753: Remove deprecated LAPACKFullMatrix::apply_lu_factorization (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9753 #9752: Remove Triangulation::set_manifold() (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9752 #9751: step-69: Refer to step-60 for parameter subscription topic (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9751 #9750: Remove deprecated Multigrid related constructors and functions (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9750 #9749: Remove deprecated Timer member functions (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9749 #9748: Improve DiscreteTime and use it in step 21 (proposed by rezarastak) https://github.com/dealii/dealii/pull/9748 #9747: Remove Utilities::MPI::Partitioner::get_communicator() (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9747 #9746: Remove ParameterHandler::print_parameters_section (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9746 #9745: fix a couple of Clang 10 warnings (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9745 #9744: Remove MGLevelObject::clear() (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9744 #9742: Remove FEValuesBase::get_all_normal_vectors (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9742 #9741: new function ParameterHandler::parse_input() for file-type-independent parsing with inbuilt correctness check (proposed by nfehn) https://github.com/dealii/dealii/pull/9741 #9740: Replace deprecated TableIndices constructors (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9740 #9739: GridTools/GridGenerator: add some functions to support dim-independent programming (proposed by nfehn) https://github.com/dealii/dealii/pull/9739 #9738: Fix MatrixFreeTools (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9738 #9737: Uniquely specify namespace (proposed by gassmoeller; merged) https://github.com/dealii/dealii/pull/9737 #9736: Replace ConstructionData in documentation (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9736 #9735: Change return type of DoFHandler::n_locally_owned_dofs() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9735 #9734: Remove hp::DoFHandler::get_fe() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9734 #9733: using namespace dealii is removed from tests that include ../tests.h (proposed by rezarastak; merged) https://github.com/dealii/dealii/pull/9733 #9732: Remove unused "using namespace" directives in the tutorials. (proposed by rezarastak; merged) https://github.com/dealii/dealii/pull/9732 #9731: Introduce new namespace MatrixFreeTools (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9731 #9730: Fix reserve in NoncontiguousPartitioner (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9730 #9728: links in the tutorials page fixed (proposed by rezarastak; merged) https://github.com/dealii/dealii/pull/9728 #9727: Add improvements to the mf path graph (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9727 #9726: replace n_array_elements in a few comments (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9726 #9725: annotate deprecation of n_array_elements (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9725 #9705: Introduce DEAL_II_VECTORIZATION_WIDTH_IN_BITS (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9705 #9668: Use copydoc for Python wrappers (proposed by agrayver; merged) https://github.com/dealii/dealii/pull/9668 #9656: Implement matrix-free evaluation of geometry for MF::MappingInfo (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9656 #9655: Refactor MatrixFreeFunctions::ShapeInfo (proposed by jwitte08; merged) https://github.com/dealii/dealii/pull/9655 #9645: PreconditionChebyshev: report stats with output_details (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9645 #9490: Add header quadrature_generator.h (proposed by simonsticko; merged) https://github.com/dealii/dealii/pull/9490 #9000: Fix a bug with a combination Q2 x Nedelec element. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9000 #8319: step-67: explicit time integration with matrix-free implementations (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/8319 ## And this is a list of recently opened or closed discussions: #9782: Names and functionality of VectorizedArray and std::simd (opened) https://github.com/dealii/dealii/issues/9782 #9774: spack install dealii build error (due to gmsh and sundials) (opened) https://github.com/dealii/dealii/issues/9774 #9768: Multigrid test failures (opened and closed) https://github.com/dealii/dealii/issues/9768 #9762: Create a templated version of `Utilities::pow()` (opened and closed) https://github.com/dealii/dealii/issues/9762 #9757: Test matrix_free/matrix_vector_faces_28.debug fails (opened and closed) https://github.com/dealii/dealii/issues/9757 #9756: Add a movie to step-67 (opened) https://github.com/dealii/dealii/issues/9756 #9743: Annotating deprecated names with a version number. (opened) https://github.com/dealii/dealii/issues/9743 #9729: deal.II Release 9.2 5/15/2020 (opened) https://github.com/dealii/dealii/issues/9729 #9722: Time values of write_vtu seems to be incorrect? (closed) https://github.com/dealii/dealii/issues/9722 #8974: VectorTools::project_boundary_values_curl_conforming_l2 fails in 3d on FESystems containing FE_Nedelec and FE_Q (closed) https://github.com/dealii/dealii/issues/8974 #7321: Use better names for SIMD widths in vectorization.h (closed) https://github.com/dealii/dealii/issues/7321 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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