Hello everyone! This is deal.II newsletter #236. 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: #14576: CI: new serial Jenkins (proposed by tjhei) https://github.com/dealii/dealii/pull/14576 #14575: Petsc mat mpi getter (proposed by luca-heltai) https://github.com/dealii/dealii/pull/14575 #14574: Petsc object reference (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/14574 #14573: Simplify data passing to vtk_point_index_from_ijk(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/14573 #14572: Avoid more compiler warnings about array access (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14572 #14571: [WIP] Convert device-aware MPI implementation for LinearAlgebra::distributed::Vector (proposed by masterleinad) https://github.com/dealii/dealii/pull/14571 #14570: Add weight_fe_q_dofs_by_entity_shifted() and compute_weights_fe_q_dofs_by_entity_shifted() (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14570 #14569: Tensor product matrix collection fix vectorization (proposed by peterrum) https://github.com/dealii/dealii/pull/14569 #14568: [CI]: test all MPI tests (proposed by tjhei) https://github.com/dealii/dealii/pull/14568 #14567: CMake: enable dynamic linking for Windows (proposed by tamiko) https://github.com/dealii/dealii/pull/14567 #14566: Rename tests (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14566 #14565: FEEvaluation: fix assert (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14565 #14564: Add helper function to indicate power of two (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14564 #14563: ParameterHandler: add example for json (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14563 #14562: ParameterHandler::add_parameter(): do not call action (proposed by peterrum) https://github.com/dealii/dealii/pull/14562 #14561: Generalize SolverRelaxation (proposed by peterrum) https://github.com/dealii/dealii/pull/14561 #14560: Relax assert (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14560 #14559: Tests: make mpiexec and numdiff optional (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14559 #14558: Tests: convert quick tests into regular tests (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14558 #14557: Tests: performance: add missing valgrind wrapper (proposed by tamiko) https://github.com/dealii/dealii/pull/14557 #14556: Replace one more occurrence of dim-predicated loops. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/14556 #14555: [CI] disable old MPI build on Jenkins (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/14555 #14553: MatrixFree: disable overlap of communication/computation for FE_Nothing (proposed by peterrum) https://github.com/dealii/dealii/pull/14553 #14552: Modified Gram-Schmidt: add docu (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14552 #14551: Take over #14540 and #14544 (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14551 #14550: CMake: Bugfix: only export DEAL_II_GMSH_WITH_API if gmsh is configured (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14550 #14549: Add get/set_mesh_smoothing to python bindings. (proposed by adamqc; merged) https://github.com/dealii/dealii/pull/14549 #14548: Fix indentation in Jenkinsfile.mpi (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14548 #14547: Add hp to FEInterfaceValues (proposed by fdrmrc) https://github.com/dealii/dealii/pull/14547 #14546: step-70: remove a dependency on boost. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/14546 #14545: [9.4] Take over #14540 and #14544 (proposed by tamiko) https://github.com/dealii/dealii/pull/14545 #14544: CMake: Bugfix: only export DEAL_II_GMSH_WITH_API if gmsh is configured (proposed by tamiko) https://github.com/dealii/dealii/pull/14544 #14543: Address Wundefined-var-template (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14543 #14542: [CI] add new MPI Jenkinsfile (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/14542 #14541: Fix some deprecations (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14541 #14540: CMake: Ensure we use "-pthread" instead of "-lpthread" for thread support (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/14540 #14539: Rearrange mapping related data (proposed by drwells) https://github.com/dealii/dealii/pull/14539 #14538: Added changelog for #14531 (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/14538 #14537: Convert LinearAlgebra::distributed::Vector to Kokkos (proposed by masterleinad) https://github.com/dealii/dealii/pull/14537 #14520: Add support for the mold linker (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/14520 #14417: Introduce 4th-kind Chebyshev preconditioner (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14417 #14416: Fix vector access in SolverGMRES (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14416 #14387: FEEvaluation: precompile for n_q_points==2*fe_degree (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14387 #14331: TensorProductMatrixSymmetricSumCollection: allow to disable compression (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14331 #14321: Rotate for dim=1 spacedim=2 (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/14321 ## And this is a list of recently opened or closed discussions: #14554: MatrixFree: fix partition of ghost faces for FE_Nothing (opened) https://github.com/dealii/dealii/issues/14554 #13687: Behavior of `FEEvaluation::reinit()` (closed) https://github.com/dealii/dealii/issues/13687 #12456: Latex representation of the enumeration of the reference cells (closed) https://github.com/dealii/dealii/issues/12456 #11956: Specialized binary functions for Tensor<1, 1, Number> and Number (closed) https://github.com/dealii/dealii/issues/11956 #11894: New postprocessing functions? (closed) https://github.com/dealii/dealii/issues/11894 #11450: Handling of auxiliary vectors in matrix-free loops (closed) https://github.com/dealii/dealii/issues/11450 #11173: Replace deprecated MatrixFree::reinit() from tests (closed) https://github.com/dealii/dealii/issues/11173 #10897: PH::declare_entry/get vs. ::add_parameter (closed) https://github.com/dealii/dealii/issues/10897 #10582: UML diagram about the internal data structures of Triangulation (closed) https://github.com/dealii/dealii/issues/10582 #10530: Redefinition of CellAccessor::active_cell_index() (closed) https://github.com/dealii/dealii/issues/10530 #10333: Merge DoFHandler and hp::DoFHandler - follow up tasks (closed) https://github.com/dealii/dealii/issues/10333 #10057: Introduce a function indicating the compiler that a number is a power of 2 (closed) https://github.com/dealii/dealii/issues/10057 #9702: ParameterHandler: add a .json example (closed) https://github.com/dealii/dealii/issues/9702 #9390: Refactor TriangulationDescription::Description (closed) https://github.com/dealii/dealii/issues/9390 #9363: Improve the documentation of ConsensusAlgorithm (closed) https://github.com/dealii/dealii/issues/9363 #3705: clang 3.9.1 Wundefined-var-template warnings (closed) https://github.com/dealii/dealii/issues/3705 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. 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