deal.II Newsletter #219

[Rene Gassmoeller]

Hello everyone!

This is deal.II newsletter #219.
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:

#14131: Add test for FEEvaluationShift with FE_Q (proposed by bergbauer)
#14130: Introduce inverse of MF::get_cell_iterator() (proposed by peterrum)
#14128: Simplify a function by using range-based for loops. (proposed by bangerth; merged)
#14126: Ensure to look at square of tolerances (proposed by kronbichler)
#14125: Fix reference entry (proposed by gfcas)
#14124: Introduce Utilities::MPI::prefix_sum (proposed by peterrum)
#14123: parallel intermediate out: compression levels (proposed by tjhei)
#14122: Add FEFaceEvaluation::at_boundary() and boundary_id() (proposed by peterrum)
#14121: Add MatrixFreeTools::ElementBirthAndDeathMatrixFree (proposed by peterrum)
#14120: Simplify some MPI code. (proposed by bangerth; merged)
#14119: FEEvaluationBase::read_write_operation Chose correct code path for neighbors and activated mask (proposed by bergbauer; merged)
#14118: get_line_indices_of_cell: Add specialization for tetrahedra (proposed by kronbichler; merged)
#14116: Introduce copy_boundary_ids in merge_triangulation() (proposed by jh66637; merged)
#14115: MatrixFree DoFInfo: Break out from some expensive loops (proposed by kronbichler)
#14114: DoFHandlerPolicy: Avoid one write access to an array (proposed by kronbichler)
#14113: (9.4) fix changelog entry (proposed by tjhei; merged)
#14112: reformat comment block (proposed by tjhei; merged)
#14111: fix changelog entry (proposed by tjhei; merged)
#14110: Implement parallel intermediate output (proposed by tjhei; merged)
#14109: Add Vector::zero_out_ghost_values (proposed by peterrum; merged)
#14108: Update outdated documentation of Partitioner (proposed by peterrum; merged)
#14107: Fix formatting (proposed by peterrum; merged)
#14105: Improve error message by providing a clickable link (proposed by tamiko; merged)
#14104: AssertThrow for BlockVector usage in MassOperator (proposed by gfcas)
#14103: Better document what tolerance to use in MappingCartesian. (proposed by bangerth; merged)
#14102: Add AssertIndexRange (proposed by gfcas; merged)
#14099: RPE: allow to evaluate cell-data vector (proposed by peterrum; merged)
#14088: [9.4] Take over multiple PRs (proposed by peterrum; merged)
#13924: Provide internal function for faster access of 3D cell->line_index (proposed by kronbichler; merged)

And this is a list of recently opened or closed discussions:

#14129 Warning when compiling TableHandler (opened)
#14127 compute_local_to_global_vertex_index_map does not wait for communication to finish (opened)
#14117 BarycentricPolynomial::value() optimizations - get rid of `pow` (opened)
#14106 Robustness of FEEvaluation's pre-compiled evaluation routines (opened)

A list of all major changes since the last release can be found at this website.

Thanks for being part of the community!

Let us know about questions, problems, bugs or just share your experience by writing to this mailing list, or by opening issues or pull requests on Github.
Additional information can be found at our official website.