deal.II Newsletter #355

[Rene Gassmoeller]

Hello everyone!

This is deal.II newsletter #355.
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:

#19721: Bump https://github.com/crate-ci/typos from v1.46.1 to 1.46.2 (proposed by dependabot[bot]; merged)
#19720: Bump https://github.com/psf/black-pre-commit-mirror from 26.3.1 to 26.5.1 (proposed by dependabot[bot]; merged)
#19719: Arkode: ensure arkode_mem is deleted before SUNLinearSolver's in ARKStepper (proposed by vovannikov; merged)
#19717: FEValues: improve exception message (proposed by peterrum)
#19716: Rework some data structure in FEInterfaceValues. (proposed by bangerth)
#19715: No longer mention 'unfinished' tutorials in the tut graph. (proposed by bangerth; merged)
#19714: fix tests/simplex/fe_interface_values_mixed (proposed by tjhei; merged)
#19713: CMake: avoid some unused variable errors. (proposed by drwells; merged)
#19711: Improve performance of FEInterfaceValues::reinit (proposed by masterleinad; merged)
#19710: Fix: w- and f-cycle (proposed by peterrum)
#19708: Fix support contained within without constraints (proposed by tnschmid)
#19707: Arkode: solve a 2D Prothero-Robinson IVP instead of the Brusselator benchmark for the Butcher tables test (proposed by vovannikov; merged)
#19706: Add a diagonal operator [WIP]. (proposed by quangx)
#19705: modules: fix compilation of petsc_parallel_full_matrix. (proposed by drwells; merged)
#19704: Add our own implementation of std::inplace_vector. (proposed by drwells)
#19703: SymEngine module: guard some includes. (proposed by drwells)
#19702: simplify test (proposed by SanojKnalp; merged)
#19701: Triangulation: pick array strides by examining the present ReferenceCells. (proposed by drwells)
#19699: add changelog (proposed by SanojKnalp; merged)
#19698: Arkode: use unique_ptr for storing arkode_mem in steppers (proposed by vovannikov; merged)
#19697: Some updates to the documentation of PreconditionBlock*. (proposed by bangerth)
#19695: Only export Trilinos symbols we actually need. (proposed by bangerth; merged)
#19694: Guard exporting some C++23 symbols. (proposed by bangerth; merged)
#19693: Fix real to unit cell affine approximation (proposed by HarshaMatta)
#19692: Enable MPI in Modules CI build (proposed by masterleinad; merged)
#19691: Use latest version of lukka@get-cmake, but specify cmake version. (proposed by marcfehling; merged)
#19690: Add getters and setters to TriaFaces. (proposed by drwells; merged)
#19689: Improve polynomial allocations (proposed by drwells; merged)
#19688: Better document what specific function arguments in step-35 do. (proposed by bangerth; merged)
#19687: Add guard for old SUNDIALS to the Butcher tables test (proposed by vovannikov; merged)
#19685: Fix an issue with deprecated functions. (proposed by bangerth; merged)
#19680: Ensure index>=0 in AssertIndexRange. (proposed by bangerth; merged)
#19618: Avoid some warnings about signed/unsigned comparisons. (proposed by bangerth; merged)
#19547: Add PETScWrappers::MPI::FullMatrix (proposed by SanojKnalp; merged)

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

#19718 Avoid warning about CMake Python detection. (opened)
#19712 Regression tester regressed b68ded (opened)
#19709 Regression tester regressed 917538 (opened)
#19700 Regression tester regressed 3770e0 (opened)
#19696 extract_dofs_with_support_contained_within() returns wrong results in parallel (opened)
#19686 Performance degradation in `FEInterfaceValues::reinit` compared to `FEValues::reinit` (opened)
#19546 Don't use raw void* in ARKode. (closed)
#18774 Avoid 'using' the two-argument Utilities::MPI::ConsensusAlgorithms::Interface::run() function. (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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