Hello everyone! This is deal.II newsletter #275. 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: #16695: MatrixFree: Fix function name in docu (proposed by bergbauer) https://github.com/dealii/dealii/pull/16695 #16694: Fix issue with colorized cylinder shell (proposed by blaisb) https://github.com/dealii/dealii/pull/16694 #16693: Tests: fix two headers (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16693 #16691: `ParticleHandler`: use tolerance for is_inside_unit_cell() check (proposed by mschreter; merged) https://github.com/dealii/dealii/pull/16691 #16690: Fix typo one ':' between class names (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16690 #16689: contrib/utilities/update-copyright.sh: several improvements (proposed by tamiko) https://github.com/dealii/dealii/pull/16689 #16687: Fix OpenCASCADE::*Boundary references to OpenCASCADE::*Manifold in step-54 docs (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16687 #16686: Relicensing: update copyright header to intermediate format (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16686 #16685: Relicensing: update .mailmap (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16685 #16683: Tpetra: Fix instantiations for SolverDirect* with complex number types (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16683 #16682: GitHub CI: Also compile matrix_free_kokkos tests in CUDA CI (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16682 #16681: Minor efficiency improvement. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16681 #16680: Minor updates to the documentation of a few functions. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16680 #16679: Tpetra: Fix compiling with complex values (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16679 #16677: Add Tpetra SparseMatrix::matrix_scalar_product() and matrix_norm_square(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16677 #16676: Tpetra: Add SparseMatrix::clear_row[s] (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16676 #16675: Add function to retrieve a writable reference to particle locations (proposed by gassmoeller; merged) https://github.com/dealii/dealii/pull/16675 #16674: CMake: honor `optimized`,`debug`, and `general` keywords in `LIBRARIES` and `TARGETS` (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16674 #16673: Fix `make_flux_sparsity_pattern` for `FENothing` (proposed by mschreter; merged) https://github.com/dealii/dealii/pull/16673 #16672: Tpetra: Implement Vector::is_non_negative (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16672 #16670: Use size_type as return type of SparseMatrix::m(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16670 #16669: Fix bundled boost 1.70.0 to avoid using std::unary_function (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16669 #16668: Make LA::TpetraWrappers::SparseMatrix::copy_from compatible with older Trilinos versions. (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16668 #16666: Relicensing: require all new contributions to be dual licensed (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16666 #16664: Add a comparison operator to LA::TpetraWrappers::Vector (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16664 #16663: Declare conversion assignments for Tpetra vectors. (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16663 #16661: Add python code for plotting in Step 3 (proposed by ampdes) https://github.com/dealii/dealii/pull/16661 #16660: Remove verbose output from Tpetra direct solver (proposed by jpthiele; merged) https://github.com/dealii/dealii/pull/16660 #16659: Update Trilinos readme. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/16659 #16658: Find active cell around point simplices 9.5 (proposed by drwells; merged) https://github.com/dealii/dealii/pull/16658 #16657: Assert that we only extrude quadrilateral meshes. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/16657 #16655: [9.5] take over pr #16653 (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16655 #16654: Only enable a function if a template type is right. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16654 #16653: Fix segmentation fault when using mpich (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16653 #16651: Add the remaining SUNDIALS 7 output variants. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16651 #16650: Add output variants for SUNDIALS 7. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16650 #16649: Add missing <optional> header for trilinos_tpetra_vector.h (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16649 #16648: Tpetra: Add frobenius_norm to SparseMatrix (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16648 #16647: Add Tpetra tests that are already working. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16647 #16646: Add info for TPLs to testsuite doc. (proposed by jpthiele; merged) https://github.com/dealii/dealii/pull/16646 #16645: SUNDIALS N_Vector: implement efficient operations (proposed by sebproell; merged) https://github.com/dealii/dealii/pull/16645 #16644: FE_NedelexSZ: Find hanging edges rework (proposed by kinnewig) https://github.com/dealii/dealii/pull/16644 #16641: Added complex sparse matrix instantiations. (proposed by MalikScheifinger; merged) https://github.com/dealii/dealii/pull/16641 #16637: Fix Tpetra vector element access. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16637 #16633: MG transfer global coarsening: Avoid sending empty messages (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/16633 #16632: GridTools::compute_active_cell_halo_layer() for periodic meshes (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/16632 #16629: GitHub CI: Test building with Trilinos+Tpetra (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16629 #16602: Add SolverDirect for Tpetra Wrappers (proposed by jpthiele; merged) https://github.com/dealii/dealii/pull/16602 #16588: Add TpetraWrapper::BlockVector and TpetraWrappers::BlockSparseMatrix (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16588 #16457: [C++23] When using C++23, use [[assume]] attribute. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16457 ## And this is a list of recently opened or closed discussions: #16692: Regression tester regressed b728a7 (opened and closed) https://github.com/dealii/dealii/issues/16692 #16688: Simplex grid refinement: How to avoid bad mesh quality (opened) https://github.com/dealii/dealii/issues/16688 #16684: Does MGTwoLevelTransfer work for any other vector than LinearAlgebra::distributed::Vector<Number>? (opened) https://github.com/dealii/dealii/issues/16684 #16678: Compilation fails on `ReadWriteVector` with Kokkos complex datatypes (opened and closed) https://github.com/dealii/dealii/issues/16678 #16671: Make Tpetra wrapper size_type definitions uniform. (opened) https://github.com/dealii/dealii/issues/16671 #16667: Regression tester regressed 2f6889 (opened and closed) https://github.com/dealii/dealii/issues/16667 #16665: Relicensing deal.II (opened) https://github.com/dealii/dealii/issues/16665 #16662: Issue of Boost `std::unary_function` on ARM-based mac with Clang 15 (opened and closed) https://github.com/dealii/dealii/issues/16662 #16656: Regression tester regressed d7afa6 (opened and closed) https://github.com/dealii/dealii/issues/16656 #16652: Segmentation fault when running a program using mpich (opened and closed) https://github.com/dealii/dealii/issues/16652 #16643: Fix test pickup for `DEAL_II_TRILINOS_*` (opened and closed) https://github.com/dealii/dealii/issues/16643 #16642: Regression tester regressed 7f9acd (closed) https://github.com/dealii/dealii/issues/16642 #16635: Failure with Tpetra vectors: nonlocal_vector is not available. (closed) https://github.com/dealii/dealii/issues/16635 #16433: CMake: external boost with `debug` and `optimized` keywords is not split correctly into `_DEBUG|_RELEASE` library strings (closed) https://github.com/dealii/dealii/issues/16433 #14704: find_all_active_cells_around_point issue with simplex (closed) https://github.com/dealii/dealii/issues/14704 #9598: Memory consumption in large scale hp-adaptive applications. (closed) https://github.com/dealii/dealii/issues/9598 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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