Hello everyone! This is deal.II newsletter #273. 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: #16597: Tpetra: fix lac/vector_reinit_02 (proposed by masterleinad) https://github.com/dealii/dealii/pull/16597 #16596: NonMatching::MappingInfo: Remove quadrature projection (proposed by bergbauer) https://github.com/dealii/dealii/pull/16596 #16594: Better document problems with failed MPI I/O calls. (proposed by bangerth) https://github.com/dealii/dealii/pull/16594 #16593: More minor edits to tria_description.cc. (proposed by bangerth) https://github.com/dealii/dealii/pull/16593 #16592: Better document one aspect of what you can't do with ghosted vectors. (proposed by bangerth) https://github.com/dealii/dealii/pull/16592 #16591: Simplify some calls to make_array_view(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16591 #16590: Enable a couple unit tests for LinearAlgebra::TpetraWrappers::Vector (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16590 #16589: Suppress exception output that is not very interesting. (proposed by bangerth) https://github.com/dealii/dealii/pull/16589 #16588: Add TpetraWrapper::BlockVector and TpetraWrappers::BlockSparseMatrix (proposed by kinnewig) https://github.com/dealii/dealii/pull/16588 #16587: Use correct function names in test (proposed by jh66637; merged) https://github.com/dealii/dealii/pull/16587 #16585: Simplify step-7 somewhat. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16585 #16584: Fix mpi/local_size (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16584 #16583: Use DEAL_II_CXX23_ASSERT in the Tensor class. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16583 #16582: Require support for attribute [[assume]] for C++23 support (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16582 #16581: Introduce DEAL_II_UNREACHABLE(). (proposed by bangerth) https://github.com/dealii/dealii/pull/16581 #16580: Add a missing template argument. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16580 #16579: Provide an example of use for DEAL_II_NOT_IMPLEMENTED(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16579 #16577: [main] take over point release changelog entry (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16577 #16576: [9.5] update changelog for point release (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16576 #16575: [9.5] update changelog for point release (proposed by tamiko) https://github.com/dealii/dealii/pull/16575 #16574: Fix assert in import_elements from ReadWriteVector (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16574 #16573: Minor doc update. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16573 #16572: Convert a few more places of Assert(false, dealii::ExcNotImplemented()); (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16572 #16571: More work in tria_description.h/cc. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16571 #16569: Fix TpetraWrappers::SparsityPattern when compiling for GPU backends (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16569 #16568: Use AlignedVector in ReadWriteVector. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/16568 #16567: Fix a changelog entry that doxygen complains about. (proposed by bangerth) https://github.com/dealii/dealii/pull/16567 #16566: Prefer trilinos_vector over trilinos_rcp (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16566 #16565: Template TrilinosWrappers::Vector on memory space (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16565 #16564: Move the description of DeclException in step-9. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16564 #16563: Explain the use of DEAL_II_NOT_IMPLEMENTED() in step-8. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16563 #16562: Convert tutorial programs to use DEAL_II_NOT_IMPLEMENTED(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16562 #16560: Silence a warning. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16560 #16559: Simplify the Copy-Constructor in TpetraWrappers::Vector (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16559 #16558: Make a deep-copy of the Tpetra::Vector in the assignment operator. (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16558 #16555: Testsuite: remove implicit target dependencies when possible (ninja support) (proposed by tamiko) https://github.com/dealii/dealii/pull/16555 #16551: Testsuite: use `./serial` subdirectory (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16551 #16550: Add a couple missing includes (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16550 #16549: TpetraWrappers::Vector: Don't use rcp pointers internally (proposed by masterleinad) https://github.com/dealii/dealii/pull/16549 #16548: Simplify generation of a cmake message. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16548 #16547: Simplify locally_owned_elements in TpetraWrappers::Vector. (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16547 #16546: Rework import_elements() in read_write_vector for TpetraWrapper::Vector (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16546 #16545: Fix Copy Constructor in TpetraWrappers::Vector. (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16545 #16544: `ParameterHandler::parse_input_from_json()`: do not use mangled parameter names anymore (proposed by mschreter) https://github.com/dealii/dealii/pull/16544 #16543: Introduce DEAL_II_NOT_IMPLEMENTED() and associated machinery. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16543 #16542: Tests serialization/fe_series_0?.output: update libc++ output variant (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16542 #16541: [9.5] CMake: fix compilation with bundled boost and modern clang (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16541 #16540: [9.5] base/mpi.h: also instantiate for signed long long int (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16540 #16539: [9.5] DofTools: add missing codimension-one instantiation (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16539 #16537: Enable cache for parallel::CellWeights. (proposed by marcfehling) https://github.com/dealii/dealii/pull/16537 #16533: Clean up a test. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16533 #16532: Fix performance quadrature generator (proposed by bergbauer) https://github.com/dealii/dealii/pull/16532 #16531: Kokkos+Cuda: enforce expt-relaxed-constexpr (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/16531 #16530: Fix docu of `p::d::SolutionTransfer::interpolate()` for the use with multiple functions (proposed by mschreter; merged) https://github.com/dealii/dealii/pull/16530 #16529: Fix TpetraWrappers::Vector::operator=(double) (proposed by kinnewig; merged) https://github.com/dealii/dealii/pull/16529 #16527: base/mpi.h: also instantiate for signed long long int (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16527 #16526: Make some parts of VectorizedArray infrastructure 'constexpr'. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16526 #16524: Fix type confusion in Tensor initialization. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/16524 #16523: changelog for PR 16489 (proposed by YiminJin; merged) https://github.com/dealii/dealii/pull/16523 #16521: ParameterAcceptor: check that we set values correctly for multiple live objects of the same class (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/16521 #16394: Add factory functions for FERemoteEvaluationCommunicator (proposed by jh66637; merged) https://github.com/dealii/dealii/pull/16394 #16359: Introduce FEFacePointEvaluation with optimized FCL path (proposed by bergbauer; merged) https://github.com/dealii/dealii/pull/16359 #16339: MGTwoLevelTransfer: improve setup of indices (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/16339 ## And this is a list of recently opened or closed discussions: #16595: Regression tester regressed c25f6f (opened) https://github.com/dealii/dealii/issues/16595 #16586: Regression tester regressed bc4df2 (opened and closed) https://github.com/dealii/dealii/issues/16586 #16578: Regression tester regressed ccaed3 (opened and closed) https://github.com/dealii/dealii/issues/16578 #16570: `TimerOutput::get_summary_data()` returns wrong type for `n_calls` (opened) https://github.com/dealii/dealii/issues/16570 #16561: Regression tester: make failsafe less aggressive (opened and closed) https://github.com/dealii/dealii/issues/16561 #16557: Regression tester regressed 1b2b36 (opened and closed) https://github.com/dealii/dealii/issues/16557 #16554: Simplify code by relying on newer Kokkos versions. (opened and closed) https://github.com/dealii/dealii/issues/16554 #16553: Use Kokkos::abort() in DEAL_II_NOT_IMPLEMENTED(). (opened) https://github.com/dealii/dealii/issues/16553 #16552: Convert examples/ to use DEAL_II_NOT_IMPLEMENTED(). (opened and closed) https://github.com/dealii/dealii/issues/16552 #16538: Regression tester regressed b0bac1 (opened and closed) https://github.com/dealii/dealii/issues/16538 #16536: Create DEAL_II_UNREACHABLE (opened) https://github.com/dealii/dealii/issues/16536 #16535: Modules page disappears in online doc (opened) https://github.com/dealii/dealii/issues/16535 #16534: Write autodifferentiation output to deallog, not std::cout. (opened) https://github.com/dealii/dealii/issues/16534 #16528: Relax the restrictions on 64-bit PETSc. (opened) https://github.com/dealii/dealii/issues/16528 #16525: Add test for #16518. (opened) https://github.com/dealii/dealii/issues/16525 #16522: Fix conversion of initializers in Tensor<1,dim>. (opened and closed) https://github.com/dealii/dealii/issues/16522 #16520: Does add_parameter() set multiple variables when called multiple times? (opened and closed) https://github.com/dealii/dealii/issues/16520 #16516: Need changelog entry for #16489. (opened and closed) https://github.com/dealii/dealii/issues/16516 #16511: Regression tester regressed 068fe9 (closed) https://github.com/dealii/dealii/issues/16511 #16508: Regression tester regressed 833748 (closed) https://github.com/dealii/dealii/issues/16508 #16479: Regression tester regressed 05ddc7 (closed) https://github.com/dealii/dealii/issues/16479 #16445: Tpetra wrappers do not compile (closed) https://github.com/dealii/dealii/issues/16445 #7790: TPetra detection and MPI compilers (closed) https://github.com/dealii/dealii/issues/7790 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! 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