Hello everyone! This is deal.II newsletter #274. 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: #16641: Added complex sparse matrix instantiations. (proposed by MalikScheifinger) https://github.com/dealii/dealii/pull/16641 #16640: Clarify the documentation of IndexSet::is_empty(). (proposed by bangerth) https://github.com/dealii/dealii/pull/16640 #16639: Declare conversion assignments for Tpetra vectors. (proposed by bangerth) https://github.com/dealii/dealii/pull/16639 #16638: Add missing changelog entry for colorize cylinder_shell (proposed by blaisb; merged) https://github.com/dealii/dealii/pull/16638 #16637: Fix Tpetra vector element access. (proposed by bangerth) https://github.com/dealii/dealii/pull/16637 #16634: MPI compute index owner: improve documentation of flag (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/16634 #16633: MG transfer global coarsening: Avoid sending empty messages (proposed by kronbichler) https://github.com/dealii/dealii/pull/16633 #16632: GridTools::compute_active_cell_halo_layer() for periodic meshes (proposed by peterrum) https://github.com/dealii/dealii/pull/16632 #16631: ConsensusAlgorithmsPayload: switch internal data type (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/16631 #16630: Add colorize option to cylinder_shell (proposed by blaisb; merged) https://github.com/dealii/dealii/pull/16630 #16629: GitHub CI: Test building with Trilinos+Tpetra (proposed by masterleinad) https://github.com/dealii/dealii/pull/16629 #16628: Specify when Tpetra tests should be run (proposed by jpthiele; merged) https://github.com/dealii/dealii/pull/16628 #16626: Tpetra: Fix compiling with Trilinos versions prior to 13.2 (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16626 #16625: Add tests for deal.II solvers with TpetraWrappers classes (proposed by jpthiele; merged) https://github.com/dealii/dealii/pull/16625 #16624: Enable MatrixCreator functions also for FullMatrix (proposed by peterrum) https://github.com/dealii/dealii/pull/16624 #16621: Import BOOST 1.84. (proposed by bangerth) https://github.com/dealii/dealii/pull/16621 #16620: Fix the name by which we reference an exception class. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16620 #16619: FEFaceEvaluation + DG + hp: fix quadrature indexing (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/16619 #16617: CMake: make sure that bundled include directory gets created (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16617 #16616: Tpetra: Implement operator(), el(), and diag_element() for SparseMatrix (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16616 #16615: FlexibleIndexStorage: fix memory allocation (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/16615 #16614: Template TpetraWrappers::SparseMatrix::vmult on the vector type. (proposed by kinnewig) https://github.com/dealii/dealii/pull/16614 #16613: Implementation for TpetraWrappers::Vector::operator Number() (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16613 #16612: fix strip_comments target (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/16612 #16611: [WIP] Add Tpetra tests. (proposed by bangerth) https://github.com/dealii/dealii/pull/16611 #16610: Also instantiate the Trilinos Tpetra VectorReference class. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16610 #16609: Fix 64-bit compilation with old PETSc versions. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16609 #16608: Work around an issue in Teuchos::rcpFromRef() with types only forward declared. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16608 #16607: Improve the error message we get for DEAL_II_ASSERT_UNREACHABLE(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16607 #16606: Fix compilation error arising with Intel ICC compiler in `trilinos_tpetra_sparsity_pattern.cc` (proposed by vovannikov; merged) https://github.com/dealii/dealii/pull/16606 #16604: Tpetra: Replace TrilinosScalar (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16604 #16603: Fix deal.II CMake flag in Tpetra configure warning (proposed by jpthiele; merged) https://github.com/dealii/dealii/pull/16603 #16602: Add SolverDirect for Tpetra Wrappers (proposed by jpthiele) https://github.com/dealii/dealii/pull/16602 #16601: Better document a funny construct. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16601 #16600: Convert tutorials to use DEAL_II_ASSERT_UNREACHABLE(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16600 #16599: Explain how DEAL_II_ASSERT_UNREACHABLE() is used. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16599 #16598: Tpetra: Enable lac/linear_operator_15 (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16598 #16594: Better document problems with failed MPI I/O calls. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16594 #16593: More minor edits to tria_description.cc. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16593 #16592: Better document one aspect of what you can't do with ghosted vectors. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16592 #16581: Introduce DEAL_II_UNREACHABLE(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16581 #16497: Move matrix free classes from CUDAWrappers namespace to Portable namespace (proposed by Rombur; merged) https://github.com/dealii/dealii/pull/16497 ## And this is a list of recently opened or closed discussions: #16642: Regression tester regressed 7f9acd (opened) https://github.com/dealii/dealii/issues/16642 #16636: Tpetra Solver and Preconditioner wrappers (opened) https://github.com/dealii/dealii/issues/16636 #16635: Failure with Tpetra vectors: nonlocal_vector is not available. (opened) https://github.com/dealii/dealii/issues/16635 #16627: Regression tester regressed c80a4a (opened and closed) https://github.com/dealii/dealii/issues/16627 #16623: Regression tester regressed 3cca8f (opened and closed) https://github.com/dealii/dealii/issues/16623 #16622: Problem when Installing the software on windows (opened) https://github.com/dealii/dealii/issues/16622 #16618: Update bundled boost (opened) https://github.com/dealii/dealii/issues/16618 #16605: CMake: bundled directory included when bundled muparser is selected (opened and closed) https://github.com/dealii/dealii/issues/16605 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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