Hello everyone! This is deal.II newsletter #7. 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: #5233: Rename the scalar template type of Function and derived classes. (proposed by bangerth) https://github.com/dealii/dealii/pull/5233 #5232: doc: explain how to use SOURCE_DIR from user tests (proposed by davydden; merged) https://github.com/dealii/dealii/pull/5232 #5231: Remove unused constructors in unnamed namespace (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5231 #5230: Remove meaningless type qualifier in pointer cast (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5230 #5229: Disable spuriuos intel warning (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5229 #5228: enable MSVC warning w4661 (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/5228 #5227: Replace exceptions without message by ones with a message. (proposed by bangerth) https://github.com/dealii/dealii/pull/5227 #5226: Relax polynomial degree in ShapeInfo test (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/5226 #5225: Remove unused methods (proposed by drwells) https://github.com/dealii/dealii/pull/5225 #5224: Update documentation of LogStream::push(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5224 #5223: Fix a typo. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5223 #5222: Formally deprecate the Boundary classes. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/5222 #5221: Use std::initializer_list instead of variadic constructor in tests (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5221 #5220: Fix tests by increasing the precision (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5220 #5217: Prefer data to address of first (proposed by drwells) https://github.com/dealii/dealii/pull/5217 #5216: Pass a function pointer by adress instead of by value (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5216 #5215: Rename loop variable to differ from enclosing one (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5215 #5214: Add missing (unused) return value in Convert::to_pattern (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5214 #5213: Move default pure virtual destructor of Function (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5213 #5212: Add assertion regarding vector access in FEEvaluation. (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/5212 #5211: add LAPACKFullMatrix::trace() (proposed by davydden; merged) https://github.com/dealii/dealii/pull/5211 #5210: Remove unused PETSc options (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5210 #5209: explicitly oversubscribe with MPI for quick tests (proposed by davydden; merged) https://github.com/dealii/dealii/pull/5209 #5206: Use std::unique_ptr instead of std::shared_ptr. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5206 #5205: [WIP] add FiniteElement::get_child_element (proposed by tjhei) https://github.com/dealii/dealii/pull/5205 #5204: add size_type to MGInterfaceOperator (proposed by davydden; merged) https://github.com/dealii/dealii/pull/5204 #5203: simplify tests/grid/intergrid_constraints (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/5203 #5202: Removing an unused variable in mesh_loop.h (proposed by tcclevenger; merged) https://github.com/dealii/dealii/pull/5202 #5201: Replace logstream.push/pop by Logstream::Prefix. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5201 #5200: ConstraintMatrix improvements (proposed by drwells; merged) https://github.com/dealii/dealii/pull/5200 #5199: Add an extra hint for assimp. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/5199 #5198: Update to VectorTools::interpolate (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5198 #5196: fix sundials interface for NON-MPI installations (proposed by asartori86; merged) https://github.com/dealii/dealii/pull/5196 #5195: Reduce number of internal::all_reduce versions (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5195 #5194: Remove extra ';' (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5194 #5193: Doc update for GridTools::compute_bounding_box(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5193 #5192: Use MUMPS in SLEPcWrappers test (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5192 #5190: Enable doxygen for the LAPACKSupport namespace. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/5190 #5189: Allow using objects in Table and AlignedVector that are not copyable. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5189 #5187: Use =default for an empty constructor. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5187 #5186: Update documentation of SparseMatrixEZ. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5186 #5183: A minor doc update to class CellID. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5183 #5182: Update a test. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5182 #5181: Make sure a destructor does not throw any exceptions. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5181 #5180: Catch exception by reference. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5180 #5178: Fix compilation with complex-valued PETSc (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5178 #5177: Silence warnings for unused parameters without LAPACK (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5177 #5176: Simplify logic in p::d::Triangulation. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5176 #5175: MGTransferBlockMatrixFree with a separate DoFHandler for each block (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/5175 #5174: add LA::d::BlockVector:: multivector_inner_product() (proposed by davydden; merged) https://github.com/dealii/dealii/pull/5174 #5173: Add an initializer list constructor for ArrayView. (proposed by drwells) https://github.com/dealii/dealii/pull/5173 #5172: parpack: add additional solve() which takes eigenvectors as pointers (proposed by davydden; merged) https://github.com/dealii/dealii/pull/5172 #5171: Added: bounding box is neigbhour and updated locally owned bbox (proposed by GivAlz) https://github.com/dealii/dealii/pull/5171 #5170: Fix a warning about a missing return statement. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5170 #5169: Reimplement VectorTools::interpolate_based_on_material_id (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/5169 #5168: Properly qualify a function name. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5168 #5167: KINSOL support. (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/5167 #5166: Switch order of arguments in constructors for SUNDIALS::* (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/5166 #5165: Simplify some con/destructors by using =default. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5165 #5164: Two small cleanups in the code that computes hanging node constraints. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5164 #5160: bounding box for triangulation and cell iterators [WIP] (proposed by danshapero; merged) https://github.com/dealii/dealii/pull/5160 #5154: extend LAPACKFullMatrix to do Cholesky, inverse of SPD, norms and con... (proposed by davydden; merged) https://github.com/dealii/dealii/pull/5154 #5151: Improve VectorTools::interpolate: Transformation for systems (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/5151 #5149: More steps towards hp in parallel. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/5149 #5131: add yet another pair of outputs for Metis on macOS with Clang 9.0.0 (proposed by davydden; merged) https://github.com/dealii/dealii/pull/5131 #5114: Add distribute_mg_dof functionality for a parallel::shared::Triangulation (proposed by tcclevenger; merged) https://github.com/dealii/dealii/pull/5114 #5109: facilitate transfer of fine-level solution to MG levels and test it with MappingQEulerian (proposed by davydden; merged) https://github.com/dealii/dealii/pull/5109 #5107: More support for vector-valued hp FE spaces (proposed by eldarkh; merged) https://github.com/dealii/dealii/pull/5107 #5106: GridTools::extract_used_vertices (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/5106 #5074: Vectorized tensor product matrix (proposed by jwitte08; merged) https://github.com/dealii/dealii/pull/5074 #4798: Remove boundary usage (proposed by drwells; merged) https://github.com/dealii/dealii/pull/4798 #4729: Add particle class (proposed by gassmoeller; merged) https://github.com/dealii/dealii/pull/4729 ## And this is a list of recently opened or closed discussions: #5219: show how to output quadrature data in solid mechanics tutorials (opened) https://github.com/dealii/dealii/issues/5219 #5218: Use an explicit NumberType template parameter value in FEEvaluation::get_symmetric_gradient (opened) https://github.com/dealii/dealii/issues/5218 #5208: allow MPI oversubscription in quick tests (opened and closed) https://github.com/dealii/dealii/issues/5208 #5207: Tester: add a container testing everything with Spack (opened and closed) https://github.com/dealii/dealii/issues/5207 #5197: Group matrix-free cell blocks based on predicate (ie material ID) (opened) https://github.com/dealii/dealii/issues/5197 #5191: Unable to install with Trilinos and MPI (opened and closed) https://github.com/dealii/dealii/issues/5191 #5188: Can't create Table<2,T> (and AlignedVector<T>) if T can not be copy constructed (opened and closed) https://github.com/dealii/dealii/issues/5188 #5185: shallow copy / view for some blocks in a BlockVector (interface to Anasazi eigensolvers) (opened) https://github.com/dealii/dealii/issues/5185 #5184: LAPACKSupport::Property is not show in doxygen (opened and closed) https://github.com/dealii/dealii/issues/5184 #5179: Failing SLEPc tests (opened and closed) https://github.com/dealii/dealii/issues/5179 #5141: slepc/step-36_parallel_02 failing (closed) https://github.com/dealii/dealii/issues/5141 #5108: MappingQEulerian + MatrixFree + GMG (closed) https://github.com/dealii/dealii/issues/5108 #5044: ARKODE interface. (closed) https://github.com/dealii/dealii/issues/5044 #5043: KINSOL interface. (closed) https://github.com/dealii/dealii/issues/5043 #4799: Deprecate all Boundary classes. (closed) https://github.com/dealii/dealii/issues/4799 #3080: shall we have a Particle class (closed) https://github.com/dealii/dealii/issues/3080 #1219: Initialize fields with invalid values (closed) https://github.com/dealii/dealii/issues/1219 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 [email protected], or by opening issues or pull requests at https://www.github.com/dealii/dealii. 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