deal.II Newsletter #205

[Rene Gassmoeller]

Hello everyone!

This is deal.II newsletter #205.
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:

#13579: Allow loading triangular meshes from Gmsh with some cells inverted (proposed by zjiaqi2018)
#13577: Use PIMPL in our muParser implementation. (proposed by drwells)
#13576: Run one parallel hp unification test with three and four processes. (proposed by marcfehling; merged)
#13573: Add functions to MGTools (proposed by peterrum)
#13572: cell_weight: add changelog for bugfix. (proposed by marcfehling; merged)
#13571: Avoid a copy of a vector. (proposed by bangerth; merged)
#13570: Simplify code using BOOST::variant. (proposed by bangerth)
#13569: MappingQ: add public member function get_mapping_support_points() (proposed by nfehn)
#13567: Make DoFRenumbering work when some processors have 0 DoFs. (proposed by drwells; merged)
#13566: Use compressed_constraint_kind in MatrixFree (CPU) (proposed by peterrum; merged)
#13565: Add wrappers for ArborX::Sphere (proposed by Rombur)
#13564: Provide a count_cycles() function. (proposed by bangerth)
#13563: Simplify a piece of code. (proposed by bangerth; merged)
#13562: Avoid one use of GeometryInfo. (proposed by bangerth; merged)
#13561: cell_weight: suggestions from code review. (proposed by marcfehling; merged)
#13560: Add an assertion. (proposed by bangerth; merged)
#13559: Minor particle cleanups. (proposed by bangerth; merged)
#13558: Minor cleanups. (proposed by bangerth; merged)
#13557: GC: compressed weights -> AlignedVector (proposed by peterrum; merged)
#13556: Rename a class. (proposed by bangerth; merged)
#13554: CMake: uniformly require version 3.3.0 (proposed by tamiko; merged)
#13553: Version number update: deal.II -> 9.4.0-pre (proposed by tamiko; merged)
#13552: ConstraintKinds: compress/decompress (proposed by peterrum; merged)
#13551: GC::create_geometric_coarsening_sequence() add assert (proposed by peterrum; merged)
#13550: GC: test FE_DGQ(0) (proposed by peterrum; merged)
#13549: Add Kokkos backend (proposed by masterleinad)
#13548: Fix docu of PreconditionChebyshev regarding degree (proposed by peterrum; merged)
#13541: Add ScalarType as template parameter to MeshWorker::CopyData (proposed by jppelteret; merged)
#13538: Fix test for nearest query for ArborXWrappers::DistributedTree (proposed by Rombur; merged)
#13451: cell_weight: remove initial weight from distributed applications. (proposed by marcfehling; merged)

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

#13580 `VectorTools::Interpolate()` gives different results for `RE_DGQ` and `FE_RaviartThomasNodal` (opened)
#13578 TLS is quite slow (opened)
#13575 New website (opened)
#13574 deal.II Release 9.4 - deadline June 10 (opened)
#13568 Mapping::get_vertices() uses GeometryInfo::vertices_per_cell (opened)
#13555 For load balancing, should weights of cells be of type `double`? (opened)
#13532 Shift "coding conventions" to Wiki? (closed)
#13510 For load balancing, should cells have a "base weight" or not? (closed)

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

Thanks for being part of the community!

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Additional information can be found at our official website.