Hello everyone! This is deal.II newsletter #56. 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: #7441: Add GridTools::get_coarse_mesh_description. (proposed by drwells) https://github.com/dealii/dealii/pull/7441 #7440: Disallow using rvalue references for Subscriptor::(un)?subscribe (proposed by masterleinad) https://github.com/dealii/dealii/pull/7440 #7439: doxygen: fix image scaling for scalapack (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/7439 #7438: fix doxygen GridGenerator plate_with_a_hole imgs (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/7438 #7436: Prefer std::string over const char * in public interfaces (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7436 #7435: Fix read with FEEvaluation and AVX-512 support (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/7435 #7434: Deprecate Tecplot binary output (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7434 #7432: Fix init_cuda (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7432 #7431: Derandomize CUDA devices used in tests (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7431 #7430: Fix MemorySpace check for zero sized ArrayViews (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7430 #7427: Read and Write VTK consistently. (proposed by luca-heltai) https://github.com/dealii/dealii/pull/7427 #7425: [9.0] Take over #7424 (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/7425 #7424: CMake: Remove a faulty list manipulation (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/7424 #7422: Only declare PosixThreadBarrier if there is POSIX support (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7422 #7420: Fix FEFaceValues for FE_NedelecSZ (proposed by agrayver) https://github.com/dealii/dealii/pull/7420 #7419: Rewrite the introduction of step-20. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/7419 #7418: Takeover (part of #7371): Fix an issue with CSS on Firefox. (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7418 #7417: Add missing header in subscriptor.cc (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7417 #7415: set components correctly in IncrementalFunction (proposed by davydden; merged) https://github.com/dealii/dealii/pull/7415 #7414: Gmsh' MSH file format version 4 (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7414 #7412: MemorySpace template parameter for ArrayView (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7412 #7411: Update GridGenerator::truncated_cone. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/7411 #7410: Update description of Subscriptor and SmartPointer in the tutorials (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7410 #7409: Fix FE_NedelecSZ::fill_fe_face_values (proposed by agrayver) https://github.com/dealii/dealii/pull/7409 #7408: Set the active_fe_index of coarsened cells based on their children. (proposed by marcfehling) https://github.com/dealii/dealii/pull/7408 #7404: Fix some commentary on iterators. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/7404 #7402: Fix (Dynamic)?SparsityPattern::begin() for empty sparsity patterns. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/7402 #7398: Introduce init_cuda in tests.h (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7398 #7370: Force CUDA host compiler to be the same as the one used as C++ compiler (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7370 #7363: Make SmartPointer+Subscriptor check for dangling pointers (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/7363 #7337: Introduced 'compare_for_cell_domination'. Refactored 'compare_for_face_domination'. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/7337 ## And this is a list of recently opened or closed discussions: #7437: GridGenerator images missing on web (opened and closed) https://github.com/dealii/dealii/issues/7437 #7433: numerics/project_q_*_02 failing with AVX512 (opened and closed) https://github.com/dealii/dealii/issues/7433 #7429: Wrongly detected MemoryLocation for CUDA pointer with offset (opened and closed) https://github.com/dealii/dealii/issues/7429 #7428: Assertion in p4est_connectivity.h (opened) https://github.com/dealii/dealii/issues/7428 #7426: FEs that need data on a patch of cells for meshes without hanging nodes (opened) https://github.com/dealii/dealii/issues/7426 #7423: dealii 9.0.1: cmake failing with petsc 3.10.2 (opened) https://github.com/dealii/dealii/issues/7423 #7421: Windows: Compilation error on master branch (opened and closed) https://github.com/dealii/dealii/issues/7421 #7416: gcc is broken after #7363 (opened and closed) https://github.com/dealii/dealii/issues/7416 #7413: muparser 2.2.6 version is not picked up correclty (opened and closed) https://github.com/dealii/dealii/issues/7413 #7407: matrix-free/stokes_computation fails on macOS with clang (opened) https://github.com/dealii/dealii/issues/7407 #7369: CUDA build fails due to `-Wsuggest-override` (closed) https://github.com/dealii/dealii/issues/7369 #7326: Support new gmsh-4 mesh format (closed) https://github.com/dealii/dealii/issues/7326 #7309: consistently use std::string for filenames (closed) https://github.com/dealii/dealii/issues/7309 #6922: cmake 3.11 does not permit package as a target (closed) https://github.com/dealii/dealii/issues/6922 A list of all major changes since the last release can be found at https://www.dealii.org/developer/doxygen/deal.II/changes_after_8_5_0.html. 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