deal.II Newsletter #283

[Rene Gassmoeller]

Hello everyone!

This is deal.II newsletter #283.
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:

#16998: Fix Compiler warning in `tria.cc` (proposed by dominiktassilostill; merged)
#16996: Introduce concepts that matrix template arguments have to satisfy. (proposed by bangerth; merged)
#16995: Annotate solver classes with vector space vector concept. (proposed by bangerth)
#16994: Add a few more tests for the tutorials (proposed by kronbichler; merged)
#16993: Introduce FullMatrix::compress() (proposed by peterrum; merged)
#16992: Fix DEAL_II_ARBORX_CXX20_BUG check (proposed by masterleinad; merged)
#16991: Name a template argument VectorType as per usual. (proposed by bangerth; merged)
#16990: Zap step-12b. (proposed by bangerth)
#16989: Test step-67 and step-76 tutorial programs (proposed by kronbichler; merged)
#16988: add tests/examples/step-77 (proposed by tjhei; merged)
#16987: Get rid of the use of deallog in step-3 and friends. (proposed by bangerth; merged)
#16986: Remove unnecessary references to logstream.h. (proposed by bangerth; merged)
#16985: MatrixFree: Switch ShapeInfo from VectorizedArray<Number> to Number type (proposed by kronbichler)
#16984: Tensor product operations: Use loop unrolling for slow mat-vec (proposed by kronbichler)
#16983: add tests/examples/step-15 (proposed by tjhei; merged)
#16982: Matrix-free evaluation kernels: Do not template tensor_none case (proposed by kronbichler; merged)
#16981: step-15: use AffineConstraints for boundary values (proposed by tjhei; merged)
#16979: Better default ctor for MGLevelObject (proposed by RichardYCJ)
#16977: Restructure WorkStream slightly. (proposed by bangerth; merged)
#16976: Use taskflow to create asynchronous tasks. (proposed by bangerth; merged)
#16973: Mark an input argument as 'const', and in the process give it a reasonable type. (proposed by bangerth; merged)
#16972: autopilot distclean: also remove `compile_commands.json`. (proposed by marcfehling; merged)
#16971: Rename a poorly named variable. (proposed by bangerth; merged)
#16970: FEEvaluation for simplices: Arrange gradients contiguously (proposed by kronbichler)
#16969: Clarify a comment in step-77. (proposed by bangerth; merged)
#16968: Make finite element objects 'const'. (proposed by bangerth; merged)
#16967: step-77: use AffineConstraints only (proposed by tjhei; merged)
#16966: Fix FEEvaluation gradient layout in step-76 tutorial program (proposed by kronbichler; merged)
#16965: Remove extra orientation functions (proposed by drwells; merged)
#16964: Add template argument to VectorTools::compute_no_normal_flux_constraints() (proposed by peterrum; merged)
#16961: Mark FEValuesExtractors objects as 'const' in the tests/ directory. (proposed by bangerth; merged)
#16960: Make many more variables 'const'. (proposed by bangerth; merged)
#16959: Fix MG Transfer for Tetrahedrons (proposed by dominiktassilostill)
#16958: FEPointEvaluation: Use separate reinit function for clearer separation (proposed by kronbichler)
#16957: Include allocated vectors in GrowingVectorMemory's memory consumption (proposed by sebproell; merged)
#16954: Consistently use a relative solver tolerance. (proposed by bangerth; merged)
#16940: Fix p:f:T::load() (proposed by peterrum; merged)
#16932: NonMatching::FEValues: accept CellAccessor (proposed by peterrum; merged)
#16892: Import TaskFlow 3.7.0. (proposed by bangerth; merged)

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

#16999 Regression tester regressed 10eeb3 (opened)
#16997 Regression tester regressed b0fa98 (opened)
#16980 Regression tester regressed 549a7a (opened)
#16978 MGLevelObject prevents default construct (opened)
#16975 Raise error when DSP is used without IndexSet (opened)
#16974 Regression tester regressed d97197 (opened and closed)
#16963 Regression tester regressed 4f3dff (opened)
#16962 Blocked on mailing list? (opened and closed)
#16949 Regression tester regressed efb4cd (closed)
#16946 Remove the use of deallog from step-3. (closed)
#16618 Update bundled boost (closed)

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.