deal.II Newsletter #268

[Rene Gassmoeller]

Hello everyone!

This is deal.II newsletter #268.
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:

#16090: FEPointEvaluation: Fix check in debug mode (proposed by bergbauer)
#16089: DerivativeForm output operator: Add test and changelog (proposed by bergbauer)
#16088: MGTransferMF: check compatibility of DoFHandlers (proposed by peterrum)
#16086: Swap out burn() for sleep in an erratic test. (proposed by drwells; merged)
#16085: Fix initialize typo in global coarsening functions (proposed by lpsaavedra; merged)
#16083: Document the intention of the numbers::invalid_* variables. (proposed by bangerth)
#16082: Print function for DerivativeForm (proposed by bergbauer; merged)
#16081: NonMatching::MappingInfo: Adjust tolerance for GeometryType detection (proposed by bergbauer)
#16080: Fix NoncontiguousPartitioner::import_from_ghosted_array() (proposed by peterrum; merged)
#16079: Add a function to take a view of an index set with regard to an index set mask. (proposed by bangerth)
#16078: Reduce overhead in FEEvaluation::reinit(array of cells) (proposed by bergbauer; merged)
#16076: Restructure FullMatrix::invert to (hopefully) lower compilation times (proposed by kronbichler; merged)
#16075: github-actions: fix a race condition. (proposed by marcfehling; merged)
#16074: GitHub CI OSX and Windows: Upload CMakeConfigureLog (proposed by masterleinad; merged)
#16073: Update oneAPI CI (proposed by masterleinad; merged)
#16072: Add step-87: Tutorial on RemotePointEvaluation (proposed by peterrum)
#16071: Docker: fix order of ARGS in Dockerfile. (proposed by marcfehling; merged)
#16069: Fix Doxygen copydoc references (proposed by jpthiele)
#16068: make_flux_sparsity_pattern: Reduce compile time by joining code (proposed by kronbichler; merged)
#16067: Doxygen/Tutorials remove unnecessary anchors (proposed by jpthiele)
#16066: Fix doxygen warnings for template instantiations (proposed by jpthiele; merged)
#16064: Minor cleanups. (proposed by bangerth; merged)
#16063: Docker: Build images every 12 hours. (proposed by marcfehling; merged)
#16062: Docker: Build images with different number of jobs. (proposed by marcfehling; merged)
#16061: Docker: Use the default driver again. (proposed by marcfehling; merged)
#16060: Docker: Use one process to decrease memory usage. (proposed by marcfehling; merged)
#16059: More assertions in AffineConstraints. (proposed by bangerth; merged)
#16058: Use gmres in step 12 (proposed by nils-schween)
#16057: Remove commented code (proposed by peterrum)
#16056: MGTwoLevelTransfer: different improvements (proposed by peterrum)
#16055: Fix .pl extensions in copyright update script (proposed by jpthiele; merged)
#16054: Matrix-free kernels: Try to fix Cuda warning (proposed by kronbichler; merged)
#16053: Add an assertion. (proposed by bangerth; merged)
#16052: WIP: Replace epetra with tpetra (proposed by kinnewig)
#16051: Fix Doxygen warnings for anchors (proposed by jpthiele; merged)
#16050: MappingDataOnTheFly: make FE_Nothing unique_ptr (proposed by peterrum; merged)
#16049: MGTwoLevelTransfer: refine DG check (proposed by peterrum; merged)
#16048: Rename perl scripts to include .pl as extension. (proposed by bangerth; merged)
#16047: Docker: Fix driver field. (proposed by marcfehling; merged)
#16046: Docker: Fix quotation marks for driver argument (proposed by masterleinad)
#16045: Don't use BuildKit for docker CI (proposed by masterleinad; merged)
#16043: FEPointEvaluation: Implement integrate_add (proposed by bergbauer)
#16041: Fix AffineConstraints copy constructor. (proposed by bangerth; merged)
#16039: fix AffineConstraints::copy_from (proposed by tjhei; merged)
#16037: Fix Assert* not ending with a semicolon (proposed by masterleinad; merged)
#16036: Use a proper doxygen @cite reference. (proposed by bangerth; merged)
#16035: Deprecate AffineConstraints functions taking only one index set. (proposed by bangerth; merged)
#16034: Avoid use of old AffineConstraints functions. (proposed by bangerth; merged)
#16033: Simplify step-48 a bit. (proposed by bangerth; merged)
#16032: Avoid deprecated AffineConstraints functions in the tutorials. (proposed by bangerth; merged)
#16031: WIP: Adds Ginkgo interface (proposed by MarcelKoch)
#16029: attempting to fix redundant letters "td" in documentation (proposed by vyushut; merged)
#16028: NOXSolver: clear pending_exception (proposed by peterrum)
#16027: Fix compiling fe_tools_extrapolate tests without PETSc (proposed by masterleinad; merged)
#16026: Assert* should end with a semicolon (proposed by masterleinad)
#16025: NonMatching::MappingInfo: Shrink compressed vectors (proposed by bergbauer; merged)
#16024: Add doxygen download action to indent (proposed by jpthiele)
#16023: Add signals to non nested multigrid (proposed by fdrmrc; merged)
#16022: Fix warning about unininitialized values in finish_integrate_fast (proposed by masterleinad)
#16021: Improve cuthill mckee (proposed by kronbichler; merged)
#16020: Improve assert message for non-matching reference cell types (proposed by mschreter; merged)
#16019: Remove unused variables. (proposed by bangerth; merged)
#16018: Fix uninitialized warning (proposed by bergbauer; merged)
#16017: github-windows: only create archive if on master. (proposed by marcfehling; merged)
#16016: Split building docker images to two separate workers. (proposed by marcfehling; merged)
#16013: Fix Doxygen graphs in dark mode (proposed by jpthiele)
#16011: Fix TrilinosWrappers::PreconditionBase special member functions (proposed by sebproell; merged)
#16010: Assert that AffineConstraints got index sets when running in parallel. (proposed by bangerth; merged)
#16009: Simplify code slightly. (proposed by bangerth; merged)
#16007: Fix various typos (proposed by luzpaz; merged)
#16005: Fix Tpetra 64 bit global ordinate errors (proposed by jpthiele)
#16004: Test: performance/timing_matrix_free_kokkos: restore mpi and thread annotation (proposed by tamiko; merged)
#16003: Matrix-free evaluation: Avoid pointer aliasing (proposed by kronbichler; merged)
#16002: Changes in p:f:T (proposed by peterrum)
#16000: Fix warning about deprecated implicit conversion. (proposed by marcfehling; merged)
#15999: Bump docker/build-push-action from 4 to 5 (proposed by dependabot[bot]; merged)
#15998: Bump docker/setup-buildx-action from 2 to 3 (proposed by dependabot[bot]; merged)
#15997: Bump docker/login-action from 2 to 3 (proposed by dependabot[bot]; merged)
#15996: Add alternative interfaces for RemotePointEvaluation::evaluate_and_process and process_and_evaluate (proposed by mschreter; merged)
#15995: Extend API of RemotePointEvaluation::CellData (proposed by mschreter; merged)
#15993: step-50: mark as matrix-free tutorial (proposed by peterrum; merged)
#15992: step-85: make references to hp more explicit (proposed by peterrum)
#15991: Unify QGaussRadauChebychev and QGaussRadau (proposed by jpthiele; merged)
#15974: Implement AlignedVector::shrink_to_fit() (proposed by bergbauer; merged)
#15972: Implement StridedArrayView (proposed by bergbauer; merged)
#15971: Optimize FEPointEvaluation/NM::MappingInfo (proposed by bergbauer; merged)
#15789: Pre-compute what's needed for AffineConstraints::distribute(). (proposed by bangerth; merged)
#15415: FE_Hermite objects for solving with Hermite finite elements (proposed by ivweber; merged)

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

#16087 Regression tester regressed 223772 (opened)
#16084 Regression tester regressed 498635 (opened and closed)
#16077 SolverGMRES: Document roundoff issues and orthogonalization strategies (opened)
#16070 Regression tester regressed 01ddba (opened and closed)
#16065 ClangBuildAnalyzer results (opened)
#16044 FEEvaluation: FEValues is too expensive for MappingDataOnTheFly (opened)
#16042 Regression tester regressed d6cf33 (opened and closed)
#16040 Regression tester regressed 574c7c (opened and closed)
#16038 AffineConstraints::copy_from() misses entries (opened and closed)
#16030 Regression tester regressed e22cb6 (opened and closed)
#16015 Deprecate AffineConstraints constructor and reinit() function that take only one index set. (opened and closed)
#16014 Make sure tutorial programs use the new AffineConstraints::reinit() function with two index sets. (opened and closed)
#16012 Regression tester regressed 3ba99a (opened and closed)
#16008 The step-42 documentation references functions no longer named that way. (opened)
#16006 Matrix-free evaluation: Look over loops over vector components (opened)
#16001 Doxygen site: forced dark mode has bright white dot graphsin Firefox (opened)
#15994 Proposal: set DEAL_II_DOXYGEN_USE_MATHJAX to ON by default (opened)
#15989 Regression tester regressed e8073d (closed)
#15987 Add check in AffineConstraints that user provided index set arguments when running in parallel. (closed)
#12474 Compilation fails at link ld - "libpthread.so: error adding symbols: DSO missing from command line" (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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