Hello everyone! This is deal.II newsletter #87. 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: #8388: fix compilation error in tensor.h (proposed by tcclevenger) https://github.com/dealii/dealii/pull/8388 #8386: [WIP] Update bundled boost (proposed by masterleinad) https://github.com/dealii/dealii/pull/8386 #8385: Constexpr SymmetricTensor and TableIndices (proposed by rezarastak) https://github.com/dealii/dealii/pull/8385 #8384: Complex periodic constraints (proposed by dangars) https://github.com/dealii/dealii/pull/8384 #8383: Automated template instantiation for VectorizedArray (proposed by peterrum) https://github.com/dealii/dealii/pull/8383 #8382: Checking if MPI is enabled to allow both Trilinos and PETSc. (proposed by fmilicchio) https://github.com/dealii/dealii/pull/8382 #8381: Improve hermite like interpolation (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/8381 #8380: Remove deprecated PreconditionChebyshev::AdditionalData members (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/8380 #8379: Fix documentation of Chebyshev iteration (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/8379 #8378: Epetra: fix SparsityPattern::compress() with 64 bit (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/8378 #8375: update URLs to 43-1.org and use https instead of http (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/8375 #8373: Fix VectorizedArray::vectorized_load_and_transpose specialization (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/8373 #8372: Add missing epetra headers. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/8372 #8370: intel: ignore simd warning (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/8370 #8369: fix wrong variable assignment (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/8369 #8368: fix compile error typo in intel ifdef (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/8368 #8365: Hanging nodes: Loosen assertion for artificial cells. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/8365 #8363: Implement CUDAWrappers::FEEvaluation::get_dof_values/submit_dof_values (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/8363 #8362: Fix a few gcc-9 warninigs in tests (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/8362 #8361: Fix refinement.h include (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/8361 #8360: fixed misrepresentation of "*" in documentation of tutorials (proposed by rezarastak; merged) https://github.com/dealii/dealii/pull/8360 #8359: Remove deprecated Tensor functions. (proposed by drwells) https://github.com/dealii/dealii/pull/8359 #8358: Remove unused code in CUDAWrappers::internal::HangingNodes (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/8358 #8357: Always test the layout of the VectorizedArray class (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/8357 #8352: Add functionality to support multiple mappings per element in FE_PolyTensor (proposed by GrahamBenHarper; merged) https://github.com/dealii/dealii/pull/8352 #8348: Extend MatrixFree with a second template argument to control vectorization (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/8348 #8342: Extend VectorizedArray with a second template argument to control vector length (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/8342 #8341: hp::Refinement: Error prediction. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/8341 #8338: CUDA device annotations for Tensor (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/8338 #8331: Introduced CellDataTransfer. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/8331 #8307: Elementwise multiplication for Tensor<rank, dim> (proposed by anates; merged) https://github.com/dealii/dealii/pull/8307 ## And this is a list of recently opened or closed discussions: #8387: Current master has compilation errors related to constexpr in tensor.h (opened) https://github.com/dealii/dealii/issues/8387 #8377: bug in 64bit epetra :SparsityPattern::compress (opened and closed) https://github.com/dealii/dealii/issues/8377 #8376: Communicate active_fe_indices after refinement? (opened) https://github.com/dealii/dealii/issues/8376 #8374: intel 19.04 mixes up TBB installations? (opened) https://github.com/dealii/dealii/issues/8374 #8371: intel 19.0.4 AVX512 error (opened and closed) https://github.com/dealii/dealii/issues/8371 #8367: Cannot compile deal.II 9.1.1 with Trilinos (macOS) (opened) https://github.com/dealii/dealii/issues/8367 #8366: Cannot compile 9.1.1 with Trilinos and PETSc (macOS) (opened) https://github.com/dealii/dealii/issues/8366 #8364: Automated template instantiation of pairs of type (Number, width) as needed in VectorizedArray (opened) https://github.com/dealii/dealii/issues/8364 #8080: 9.1 Release (closed) https://github.com/dealii/dealii/issues/8080 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. 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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