deal.II Newsletter #226

[Rene Gassmoeller]

Hello everyone!

This is deal.II newsletter #226.
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:

#14296: Rename FPArrayComparator -> FloatingPointComparator (proposed by peterrum)
#14295: Make variable names in tensor_product_matrix.h more consistent (proposed by peterrum; merged)
#14294: Remove template parameter from FPArrayComparator (proposed by peterrum; merged)
#14293: Extend VectorizedArrayTrait (proposed by peterrum; merged)
#14292: Windows action: archive library only if merged into master (proposed by peterrum; merged)
#14291: Tensor product matrix creator (proposed by peterrum)
#14290: find_neighbor_type with customizable tolerance (proposed by jh66637; merged)
#14289: Add TensorProductMatrixSymmetricSumCache (proposed by peterrum; merged)
#14288: TensorProductMatrixSymmetricSum: switch to pointers (proposed by peterrum; merged)
#14287: Vector reductions: Unroll a loop in case of vectorization (proposed by kronbichler; merged)
#14286: Revise some operations in compute_index_owner_internal (proposed by kronbichler; merged)
#14285: Remove credits from DataOutBase (proposed by peterrum; merged)
#14284: Add DataOutBase::CompressionLevel::ascii (proposed by peterrum; merged)
#14283: Avoid undefined behavior warning (proposed by mschreter; merged)
#14282: Avoid warning regarding unused variable (proposed by kronbichler; merged)
#14281: Remove unnecessary include file (proposed by kronbichler; merged)
#14280: Make sure not to work with possibly uninitialized variables (proposed by kronbichler; merged)
#14279: internal::MatrixFreeFunctions::ConstraintInfo: switch data type (proposed by peterrum; merged)
#14278: PreconditionRelaxation/Chebyshev fixes (proposed by peterrum; merged)
#14276: Fix high-order output for vtu in parallel (proposed by peterrum; merged)
#14273: Refactor TensorProductMatrixSymmetricSum (proposed by peterrum; merged)
#14272: Add support for FE_Nothin in CUDA matrix-free (proposed by Rombur; merged)
#14271: PreconditionChebyshev: add specialization for A and P with ranges (proposed by peterrum; merged)
#14270: Triangulation: implement global_*_cell_index_partitioner() (proposed by peterrum; merged)
#14258: DataOutResample for multiple components (proposed by peterrum; merged)
#14183: Fix Manifold<3, 3>::normal_vector (proposed by zjiaqi2018; merged)
#13677: Petsc bddc preconditioner (proposed by nabw; merged)

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

#14277 `GridOutFlags::Vtk`: add flag to enable ascii output (opened and closed)
#14275 `DataOut::write_vtu_in_parallel`+ `DataOutBase::VtkFlags::write_higher_order_cells` + `dim==3`: distorted cells in Paraview (opened and closed)
#14274 Triangulation distributed without p4est (opened and closed)
#14263 Undefined behavior warning: `Triangulation::execute_refinement_isotropic/execute_coarsening` (closed)
#14247 VectorizedArray Warning (closed)
#14176 no normal flux normal vector issue with half_hyper_shell (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.