Hello everyone! This is deal.II newsletter #237. 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: #14649: Update clang-tidy checks for recent clang versions (proposed by masterleinad) https://github.com/dealii/dealii/pull/14649 #14647: Avoid using Tensor::begin_raw() et al. (proposed by drwells) https://github.com/dealii/dealii/pull/14647 #14646: Restrict some tests requiring p4est (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14646 #14645: Add METIS to Docker image (proposed by blaisb; merged) https://github.com/dealii/dealii/pull/14645 #14643: Fix issue when adol-c is enabled (proposed by Rombur; merged) https://github.com/dealii/dealii/pull/14643 #14640: CMake: fix kokkos header installation (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14640 #14639: Drop the requirement for Trilinos+Kokkos from 13.2 to 12.14.1 (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14639 #14638: Be explicit about enabled and disabled dependencies in the Docker image (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14638 #14636: delete old Jenkins setup (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/14636 #14635: CMake: Silence bogus Boost warning (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14635 #14634: CMake: Do not set errand DEAL_II_TRILINOS_WITH* if Trilinos gets disabled (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14634 #14633: Use Kokkos in functions struct replacing TBB (proposed by masterleinad) https://github.com/dealii/dealii/pull/14633 #14632: TridiagonalMatrix: change Assert to AssertThrow (proposed by nfehn) https://github.com/dealii/dealii/pull/14632 #14631: Fix up Trilinos+Kokos detection (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14631 #14630: CMake: Silence a Kokkos warning about unset OMP_PROC_BIND (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14630 #14629: Address minor issues in Trilinos NOX wrappers (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/14629 #14628: Convert CUDA tests to use Kokkos (proposed by masterleinad) https://github.com/dealii/dealii/pull/14628 #14627: Get rid of VtuStream class (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/14627 #14626: Require Trilinos 13.2 if it includes Kokkos (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14626 #14625: Improve documentation. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/14625 #14624: Move a function to ReferenceCell (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/14624 #14623: Fix compiler error for older version of GCC (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/14623 #14622: Remove some duplication; also simplify VTK code. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/14622 #14621: Remove DEAL_II_COMPILER_CUDA_AWARE (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14621 #14620: Jenkins: run tests in random order (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/14620 #14618: Fix tests output: replace CUDA with Default (proposed by Rombur; merged) https://github.com/dealii/dealii/pull/14618 #14617: Fix broken ADOL-C tests (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/14617 #14616: Remove incorrect static_assert when using CUDA-aware MPI (proposed by Rombur; merged) https://github.com/dealii/dealii/pull/14616 #14615: CMake: avoid race conditions between concurrent prm tests (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14615 #14614: Isotropic refinement cleanup (proposed by drwells; merged) https://github.com/dealii/dealii/pull/14614 #14613: Better indent documentation of class Function. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/14613 #14612: small cleanup in tridiagonal_matrix.cc (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/14612 #14611: Extend hp support in FEInterfaceValues (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/14611 #14610: doc: add documentation for lapack library linking support (proposed by CodyGirl) https://github.com/dealii/dealii/pull/14610 #14607: [WIP] Generalize identity determination in FE_SimplexP (proposed by peterrum) https://github.com/dealii/dealii/pull/14607 #14605: Classical Gram-Schmidt for block vectors (proposed by peterrum) https://github.com/dealii/dealii/pull/14605 #14604: Add a dedicated class for orientation information. (proposed by drwells) https://github.com/dealii/dealii/pull/14604 #14603: Fix warning (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14603 #14602: PETScWrappers:BlockSparseMatrix: constructor from PETSc Mat (proposed by luca-heltai) https://github.com/dealii/dealii/pull/14602 #14601: Align PETSc mpi comm with comm of PETSc Vec type, and expose VecNest type (proposed by luca-heltai) https://github.com/dealii/dealii/pull/14601 #14600: Add changelog for hp support in fe_interface_values (proposed by fdrmrc; merged) https://github.com/dealii/dealii/pull/14600 #14598: Don't install mold linker in CI (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14598 #14597: Make sure to clear a variable that gets set (proposed by kronbichler) https://github.com/dealii/dealii/pull/14597 #14596: step-81: Fix a typo in external links (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14596 #14595: Added reinit(partitioners) to LA::distributed::BlockVector. (proposed by marcfehling) https://github.com/dealii/dealii/pull/14595 #14594: Extend ScratchData to support hp for interfaces (proposed by jppelteret; merged) https://github.com/dealii/dealii/pull/14594 #14593: Compress face and line data (proposed by drwells; merged) https://github.com/dealii/dealii/pull/14593 #14592: PETScWrappers:BlockSparseMatrix: create PETSc MATNEST (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/14592 #14591: Petsc mpi management and getarray (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/14591 #14590: Some refactoring in connectivity.h (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14590 #14589: CI: update tidy image (proposed by tjhei) https://github.com/dealii/dealii/pull/14589 #14588: CI: show quicktest failures in Jenkins (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/14588 #14587: Memory optimizations (proposed by drwells; merged) https://github.com/dealii/dealii/pull/14587 #14586: CMake: quick test fixes for CI (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14586 #14585: Fix deprecated usage in tests (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/14585 #14584: Update broken link in step-22 intro.dox (proposed by and-salmon; merged) https://github.com/dealii/dealii/pull/14584 #14583: Implement P3 elements (proposed by drwells) https://github.com/dealii/dealii/pull/14583 #14581: FE tests: Plot shape functions (proposed by jppelteret) https://github.com/dealii/dealii/pull/14581 #14580: Remove deprecated LegacySignal. (proposed by marcfehling) https://github.com/dealii/dealii/pull/14580 #14578: Correct typo in step-18 intro.dox (proposed by and-salmon; merged) https://github.com/dealii/dealii/pull/14578 #14577: Correct typo in Step-18 intro.dox (proposed by and-salmon) https://github.com/dealii/dealii/pull/14577 #14576: CI: new serial Jenkins (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/14576 #14575: Petsc mat mpi getter (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/14575 #14568: [CI]: test all MPI tests (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/14568 #14547: Add hp to FEInterfaceValues (proposed by fdrmrc; merged) https://github.com/dealii/dealii/pull/14547 #14539: Rearrange mapping related data (proposed by drwells; merged) https://github.com/dealii/dealii/pull/14539 #14537: Convert LinearAlgebra::distributed::Vector to Kokkos (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14537 #14510: Use Kokkos in MemorySpaceData (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14510 #14332: Add NOX wrapper (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14332 ## And this is a list of recently opened or closed discussions: #14648: Tests stop running in parallel after a certain number of tests have been carried out (opened) https://github.com/dealii/dealii/issues/14648 #14644: Latest Docker image does not include METIS (opened and closed) https://github.com/dealii/dealii/issues/14644 #14642: Docker image fails to build (opened and closed) https://github.com/dealii/dealii/issues/14642 #14641: Kokkos: random test failures due to failed/delayed kokkos initialization (opened) https://github.com/dealii/dealii/issues/14641 #14637: Infrastructure: Trilinos shipping with Ubuntu 18.04 / 20.04 and Debian bullseye (stable) no longer usable (opened and closed) https://github.com/dealii/dealii/issues/14637 #14619: Check all_zero in (F)GMRES? (opened) https://github.com/dealii/dealii/issues/14619 #14609: TridiagonalMatrix::compute_eigenvalues() does not throw (opened) https://github.com/dealii/dealii/issues/14609 #14608: Wrong numbering of ucd_to_deal in GeometryInfo<3> (opened) https://github.com/dealii/dealii/issues/14608 #14606: which configuration errors are fatal? (opened and closed) https://github.com/dealii/dealii/issues/14606 #14599: Return MPI_Comm by value in PETSc wrappers. (opened) https://github.com/dealii/dealii/issues/14599 #14582: adolc tests are broken (opened and closed) https://github.com/dealii/dealii/issues/14582 #14579: cmake can't find existing BLAS/LAPACK installation (opened) https://github.com/dealii/dealii/issues/14579 #14518: Let DoFHandler remember the index sorting strategy (closed) https://github.com/dealii/dealii/issues/14518 #14403: Remove VtuStream class, make write_vtu_main multi-tasked (closed) https://github.com/dealii/dealii/issues/14403 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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