Hello everyone! This is deal.II newsletter #105. 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: #9250: Update the discussion of HDF5 and R scripting in step-3. (proposed by bangerth) https://github.com/dealii/dealii/pull/9250 #9249: Replace Threads::mutex by std::mutex (proposed by masterleinad) https://github.com/dealii/dealii/pull/9249 #9248: Mark 'Possibilities for extensions' as <h3>. (proposed by bangerth) https://github.com/dealii/dealii/pull/9248 #9247: Fix description of a test. (proposed by bangerth) https://github.com/dealii/dealii/pull/9247 #9246: fixes a typo in function name. Replace make_grid_and_dofs() with just make_grid() (proposed by krishnakumarg1984) https://github.com/dealii/dealii/pull/9246 #9245: Document out of memory issues with 'make -jN'. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9245 #9244: jenkins: increase OSX timeout (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9244 #9242: replace some instances of Threads::Mutex with std::mutex (proposed by rezarastak) https://github.com/dealii/dealii/pull/9242 #9241: Mark some input arguments as 'const'. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9241 #9240: Turn all for loops using "begin_active" into ranged-based ones (proposed by masterleinad) https://github.com/dealii/dealii/pull/9240 #9239: config.h: remove old p4est version logic (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9239 #9238: Remove reference to the IA64 architecture. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9238 #9237: make MueLu optional in Trilinos (proposed by tjhei) https://github.com/dealii/dealii/pull/9237 #9236: Augment the documentation of GridGenerator::simplex(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9236 #9235: Augment the UMFPACK error message. (proposed by bangerth) https://github.com/dealii/dealii/pull/9235 #9234: doc: minor GridGenerator changes (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9234 #9233: Remove cryptic comment (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9233 #9231: Simpler CellwiseInverseMassMatrix::apply() function (proposed by kronbichler) https://github.com/dealii/dealii/pull/9231 #9230: Fix two bugs in matrix-free code (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9230 #9229: Return error code from indent-all in check_indentation.sh (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9229 #9228: fixes a typo in step-3 tutorial doc (convergence topic in results/extensions) (proposed by krishnakumarg1984) https://github.com/dealii/dealii/pull/9228 #9225: fix a doxygen citation (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9225 #9224: Replace some DEAL_II_WITH_P4EST with DEAL_II_WITH_MPI (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9224 #9223: Bug fix in PR #9155 (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9223 #9220: Test python bindings (proposed by masterleinad) https://github.com/dealii/dealii/pull/9220 #9219: deprecate members in TimerOutput (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9219 #9218: Instantiate FETools::get_projection_matrix for float (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9218 #9217: Fix date in header (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9217 #9216: Extend MatrixFree::get_dof_handler (proposed by Rombur) https://github.com/dealii/dealii/pull/9216 #9215: Make DoFHandlerPolicy independent of p4est (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9215 #9214: Add CellId::is_ancestor_of (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9214 #9211: Instantiate DoFTools::map_dofs_to_support_points() also for <1,3>. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9211 #9210: Fix some doxygen namespace links. (proposed by drwells) https://github.com/dealii/dealii/pull/9210 #9209: Keep the 'dealii::' in 'using namespace dealii::'. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/9209 #9208: Fix our TBB version check. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/9208 #9207: Implement the solution of complex linear systems using UMFPACK. (proposed by bangerth) https://github.com/dealii/dealii/pull/9207 #9206: Provide TaskGroup::size(). (proposed by bangerth) https://github.com/dealii/dealii/pull/9206 #9205: Use a range-based for loop. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9205 #9204: mu_parser functions modified to use std random number generators (proposed by rezarastak; merged) https://github.com/dealii/dealii/pull/9204 #9203: Simplify the code in a test a bit. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9203 #9202: Mark a bunch of input arguments as 'const'. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9202 #9201: Minor doc updates. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9201 #9200: Fix what looks like an obvious typo in the UMFPACK source files. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9200 #9199: Avoid _n and _m as variable names. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9199 #9198: A sample code of advection-diffusion equation (proposed by saeedbahrami91) https://github.com/dealii/dealii/pull/9198 #9197: Let step-40 only depend on step-6, not step-17. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9197 #9195: Create new dealii::Triangulation::create_triangulation() (proposed by peterrum) https://github.com/dealii/dealii/pull/9195 #9194: Label step-40 as a 'basic' tutorial program. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9194 #9193: Let step-61 only build on step-51, not step-4. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9193 #9191: silence system header MPI warning (proposed by tjhei; merged) https://github.com/dealii/dealii/pull/9191 #9190: Annotate a few function arguments in doxygen. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9190 #9189: Fix typo (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9189 #9188: Include dof_accessor.h (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9188 #9187: Specify namespace in precondition.h more precisely (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9187 #9186: Avoid variable template in hp::Refinement (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9186 #9185: Avoid warnings in tests (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9185 #9183: Implement FE_Poly::memory_consumption (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9183 #9182: Deprecate some versions of DoFTools::extract_dofs(). (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9182 #9181: ECL: specialize read/write operations [WIP] (proposed by peterrum) https://github.com/dealii/dealii/pull/9181 #9179: Add python interface for FunctionManifold (proposed by agrayver) https://github.com/dealii/dealii/pull/9179 #9178: Add a set of new python wrappers (proposed by agrayver) https://github.com/dealii/dealii/pull/9178 #9176: Remove unnecessary assignment (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9176 #9175: Improve GridGenerator::channel_with_cylinder (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9175 #9174: added default case for normal to mesh projection manifold (proposed by nicola-giuliani; merged) https://github.com/dealii/dealii/pull/9174 #9173: Fix particles/extract_index_set_01 (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9173 #9172: Moved tests into their correct subdirectory. (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/9172 #9171: Symbolic function. (proposed by luca-heltai) https://github.com/dealii/dealii/pull/9171 #9170: Fix formatting. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9170 #9168: Contiguous tensor product IndexSet. (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/9168 #9167: small documentation fix (proposed by rezarastak; merged) https://github.com/dealii/dealii/pull/9167 #9166: Fix narrowing conversions in tests (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9166 #9165: Restrict a few more tests requiring complex values (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9165 #9159: Update the results section of step-46. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9159 #9157: Add field for inverse/projection of 1D polynomials to MF::ShapeInfo (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/9157 #9155: ECL: make mapping of neighbor available (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9155 #9151: Introduced hp::Refinement::p_adaptivity_fixed_number(). (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/9151 #9148: Add a series of new python wrappers (proposed by agrayver; merged) https://github.com/dealii/dealii/pull/9148 #9147: Test matrix-free CUDA for float (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/9147 #9144: Add to FEInterfaceValues what we already have in FEValues. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/9144 #9125: Feature tensor function parser (proposed by konsim83; merged) https://github.com/dealii/dealii/pull/9125 #9106: Make pft independent of p4est (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/9106 #9074: Extract index sets from particle handlers (proposed by luca-heltai; merged) https://github.com/dealii/dealii/pull/9074 #9036: Adding a test for hp::DoFHandler and parallel::distributed::Triangulation (proposed by BenBrands; merged) https://github.com/dealii/dealii/pull/9036 ## And this is a list of recently opened or closed discussions: #9243: Spack build failed for v9.1.1 when building target obj_numerics_debug (opened) https://github.com/dealii/dealii/issues/9243 #9232: [Tutorial step-3] Request for python equivalent of possible extension ("Using R and ggplot2 to generate PDFs with plots of the grid, the solution and convergence curves") (opened) https://github.com/dealii/dealii/issues/9232 #9227: [Step-3 tutorial] Invalid code for handling Neumann BCs along top and bottom faces (in suggested extensions) (opened) https://github.com/dealii/dealii/issues/9227 #9226: [documentation] Lack of clarity on simplex() function in the GridGenerator namespace (opened and closed) https://github.com/dealii/dealii/issues/9226 #9222: bibtex references broken on homepage (opened) https://github.com/dealii/dealii/issues/9222 #9221: MatrixFree ECL: face data by cells storage (opened) https://github.com/dealii/dealii/issues/9221 #9213: Perform coarsening with GridRefinement::refine_and_coarsen_optimize() (opened) https://github.com/dealii/dealii/issues/9213 #9212: Update TBB to use its latest CMake-based build system (opened) https://github.com/dealii/dealii/issues/9212 #9196: [documentation update needed] Step-1 tutorial still refers to old-style for loops for active cell iterators (opened and closed) https://github.com/dealii/dealii/issues/9196 #9192: Create/Load grid with local refinement (opened) https://github.com/dealii/dealii/issues/9192 #9184: Build of static library possibly broken (opened) https://github.com/dealii/dealii/issues/9184 #9180: LinearOperator on Trilinos using MPI (opened) https://github.com/dealii/dealii/issues/9180 #9177: FunctionParser still uses boost::random (opened and closed) https://github.com/dealii/dealii/issues/9177 #9169: CMake cannot find LAPACK (opened) https://github.com/dealii/dealii/issues/9169 #9164: Mismatch in vectorization capabilities (AVX) on i7-Comet Lake (opened) https://github.com/dealii/dealii/issues/9164 #9163: Typo on Step-40's webpage (closed) https://github.com/dealii/dealii/issues/9163 #9102: FE_DGQ::memory_consumption() is not implmented (closed) https://github.com/dealii/dealii/issues/9102 #7023: Document steps to best visualize higher-order output in Paraview (closed) https://github.com/dealii/dealii/issues/7023 #5019: Directory structure for Particles/BoundingBoxes/etc. (closed) https://github.com/dealii/dealii/issues/5019 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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