Hello everyone! This is deal.II newsletter #24. 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: #6064: Avoid deriving from std::iterator (proposed by masterleinad) https://github.com/dealii/dealii/pull/6064 #6063: ScaLAPACKMatrix: change setting of state variable at various places (proposed by BenBrands) https://github.com/dealii/dealii/pull/6063 #6062: ScaLAPACKMatrix: add eigensolver routines using MRRR algorithm (proposed by BenBrands) https://github.com/dealii/dealii/pull/6062 #6060: Convert an Assert into static_assert. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6060 #6057: Misc. typos fixes (proposed by luzpaz; merged) https://github.com/dealii/dealii/pull/6057 #6054: Add a changelog entry for commits merged in 913d2a5d62. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/6054 #6053: Really only two micro-cleanups. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6053 #6052: Minor cleanups to FETools::get_projection_matrix(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6052 #6051: Minor update to FETools::get_interpolation_difference_matrix(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6051 #6050: extend gitignore (proposed by davydden; merged) https://github.com/dealii/dealii/pull/6050 #6049: make Utilities::MPI::sum() support SparseMatrix (proposed by davydden) https://github.com/dealii/dealii/pull/6049 #6048: Rectangular full matrix (proposed by drwells; merged) https://github.com/dealii/dealii/pull/6048 #6047: Fix 64-bit dof type in test (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/6047 #6046: lapack: add set(i,j,value) (proposed by davydden; merged) https://github.com/dealii/dealii/pull/6046 #6044: Distributed coupling. (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/6044 #6043: Do not use macros in the cuda matrix-free (proposed by Rombur; merged) https://github.com/dealii/dealii/pull/6043 #6042: add change entry for the add_json_parser_for_input_files pull request. (proposed by MFraters; merged) https://github.com/dealii/dealii/pull/6042 #6041: Add missing file used in #6035 (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/6041 #6040: Improve readability of doxygen-generated pages. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6040 #6038: Fix doxygen markup. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6038 #6037: Improve readability of GridTools::compute_*_point_locations' return value (proposed by masterleinad) https://github.com/dealii/dealii/pull/6037 #6036: Misc. typos (proposed by luzpaz; merged) https://github.com/dealii/dealii/pull/6036 #6035: Allow to run the testsuite with valgrind (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/6035 #6034: Add a test that works on only a subset of MPI processes. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6034 #6033: Document why using MPI_COMM_WORLD is ok in one place. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6033 #6032: Document the use of MPI_COMM_WORLD in MPI_InitFinalize. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6032 #6031: Don't use SynchronousIterator in step-9, 14 (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6031 #6028: Make Hermite-like polynomials represent constant by (1,1,...1) (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/6028 #6025: Fix llvm-6 clang-tidy performance findings (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/6025 #6023: Parallelize FETools::compute_projection_matrices() (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6023 #6022: Provide a function that returns the version string. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/6022 #6002: Parameter Acceptor Proxy. (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/6002 #5999: Non-matching sparsity and mass matrix. (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/5999 #5998: Update a couple of things on how we generate output in the example steps (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5998 #5993: Add json parser for input files (proposed by MFraters; merged) https://github.com/dealii/dealii/pull/5993 ## And this is a list of recently opened or closed discussions: #6061: -march=native as compile flag? (opened and closed) https://github.com/dealii/dealii/issues/6061 #6059: Write FE_Discontinuous (opened) https://github.com/dealii/dealii/issues/6059 #6058: Don't put mass matrix into bottom left block in step-22 (opened) https://github.com/dealii/dealii/issues/6058 #6056: Fix exceptions in TableBase<N,T>::operator = (TableBase<N,T> &&m) (opened and closed) https://github.com/dealii/dealii/issues/6056 #6055: Don't derive from std::iterator (opened) https://github.com/dealii/dealii/issues/6055 #6045: Link the TimeStepping classes to step-52 (opened) https://github.com/dealii/dealii/issues/6045 #6039: Clearly document block sizes, max FE degrees, etc. (opened) https://github.com/dealii/dealii/issues/6039 #6030: code-gallery/two_phase_flow uses old-style DataPostprocessorScalar functions (closed) https://github.com/dealii/dealii/issues/6030 #6026: Don't use SynchronousIterators in step-9, step-14 (closed) https://github.com/dealii/dealii/issues/6026 #6019: How to understand output of compute_projection_matrices (closed) https://github.com/dealii/dealii/issues/6019 #6018: Support running the testsuite under valgrind (closed) https://github.com/dealii/dealii/issues/6018 #5986: Fix GridTools documentation (closed) https://github.com/dealii/dealii/issues/5986 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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