Add signals for non nested mg

Merge pull request #16004 from tamiko/restore_performance_test

Test: performance/timing_matrix_free_kokkos: restore mpi and thread annotation

This partially reverts 208418a5eb7a83f210f4b7cfb39575784cb5d130

Merge pull request #15999 from dealii/dependabot/github_actions/docker/build-push-action-5

Bump docker/build-push-action from 4 to 5

Merge pull request #15997 from dealii/dependabot/github_actions/docker/login-action-3

Bump docker/login-action from 2 to 3

Merge pull request #15998 from dealii/dependabot/github_actions/docker/setup-buildx-action-3

Bump docker/setup-buildx-action from 2 to 3

Bump docker/build-push-action from 4 to 5

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4 to 5.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v4...v5)

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Bump docker/setup-buildx-action from 2 to 3

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2 to 3.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v2...v3)

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Bump docker/login-action from 2 to 3

Bumps [docker/login-action](https://github.com/docker/login-action) from 2 to 3.
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](https://github.com/docker/login-action/compare/v2...v3)

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Merge pull request #15415 from ivweber/pull_request_fe

FE_Hermite objects for solving with Hermite finite elements

Merge pull request #15993 from peterrum/step-50-mf

step-50: mark as matrix-free tutorial

Merge pull request #15972 from bergbauer/strided_array_view

Implement StridedArrayView

Added files for the fe_hermite finite element object class, and test files

Copied over changed for cut Hermite from experimental branch

Rewrote interface for calling Hermite elements to use polynomial degree, rather than regularity.

step-50: mark as matrix-free tutorial

Merge pull request #15986 from jpthiele/jpt-GaussRadau

Add QGaussRadau quadrature + tests

Merge pull request #15990 from bangerth/simplify

Simplify some code.

Simplify some code.

Merge pull request #15983 from kronbichler/split_evaluation_kernels

Matrix-free: Split up evaluation_kernels.h into cell and face parts

Not a base class

Merge pull request #15930 from masterleinad/fe_values_allow_checking_cell_similarities

FEValues: Allow checking for cell similarities in multi-threaded mode

Split up evaluation_kernels.h into cell and face parts

Implement StridedArrayView

Merge pull request #15981 from kronbichler/remove_indirection

Matrix-free FEEvaluation: Avoid indirection in call to sum factorization

Merge pull request #15980 from kronbichler/fe_eval_pointers

Optimize arithmetic operations for Raviart-Thomas elements

Matrix-free FEEvaluation: Avoid indirection in call to sum factorization

Improve instruction scheduling

Further optimize Raviart-Thomas get/submit_gradient

Optimize arithmetic operations for Raviart-Thomas elements

Merge pull request #15951 from kronbichler/restructure_gradients

Matrix-free evaluation of Raviart-Thomas: major restructuring

Extend comments and clarify variable names

Changelog

Fix review comments

Make performance test compile

Silence compile warning

Implement face evaluation for Raviart-Thomas

Simplify normal evaluation for Raviart-Thomas

Delete obsolete code

FEEvaluation: Restructure layout of gradients.

Generalize and optimize Raviart-Thomas evaluation significantly

Merge pull request #15978 from dealii/dependabot/github_actions/actions/checkout-4

Bump actions/checkout from 3 to 4

Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v3...v4)

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Merge pull request #15977 from simonsticko/fe_interface_get_update_flags_before_reinit

Fix address boundary error in FEInterfaceValues::get_update_flags()

Fix address boundary error in FEInterfaceValues::get_update_flags()

The function did not use the correct internal pointer in hp-mode.

Merge pull request #15976 from marcfehling/bangerth-x2

Do not use deprecated extract_locally_* functions in library.

Do not use deprecated extract_locally_* functions in library.

Merge pull request #15965 from kronbichler/test_rt_3

Matrix-free shape info: Generate face orientation table for R-T

Merge pull request #15966 from bangerth/x2

Mark deprecated functions with DEAL_II_DEPRECATE_EARLY.

Merge pull request #15973 from bangerth/script

Update the count_lines.sh script.

Merge pull request #15970 from bangerth/version

Augment error message for clang-format.

Mark deprecated functions with DEAL_II_DEPRECATE_EARLY.

Avoid the use of deprecated functions.

Update the count_lines.sh script.

Augment error message for clang-format.

Merge pull request #15964 from kronbichler/test_rt_2

Matrix-free for Raviart-Thomas: Test correct interpolation (non-affine)

Merge pull request #15968 from bangerth/x3

Allow comparison of IndexSet objects against default-constructed objects.

Merge pull request #15967 from bangerth/x1

Avoid using a deprecated function.

Merge pull request #15969 from bangerth/x6

Add a reference to an article.

Another test case, currently not converging

Matrix-free shape info: Generate face orientation table for Raviart-Thomas

Add a reference to an article.

Add a changelog entry.

Add a test.

Allow comparison of IndexSet objects against default-constructed objects.

Avoid using a deprecated function.

Merge pull request #15963 from kronbichler/fix_assert

FE_PolyTensor: Only request dof_sign_change if necessary

Better explain the test

Merge pull request #15952 from marcfehling/limit-plevel-test

Added another test for limit_p_level_difference().

Merge pull request #15962 from kronbichler/simplify_tests

Remove static declaration from a few tests

Matrix-free for Raviart-Thomas: Test correct interpolation (non-affine)

Changelog

New test case

FEPolyTensor: Only request dof_sign_change if necessary

Remove static declaration from a few tests

Merge pull request #15954 from kronbichler/fix_warning5

Another attempt to fix compile warning

Merge pull request #15960 from luca-heltai/update-sha

Update shasum for clang-format mac.

Update shasum for clang-format mac.

Use a simpler form to print an assertion

Another attempt to fix compile warning

Merge pull request #15865 from richardschu/fix_ghosts_MGinterpolate

reset ghost state in MG_transfer_global_coarsening interpolate

Update doc/news/changes/minor/20230904Schussnig

Co-authored-by: Martin Kronbichler <martin.kronbichler@uni-a.de>

Merge pull request #15956 from peterrum/examples_header

Unify headers of tutorials

Merge pull request #15943 from drwells/pst-zorder

Make the p::s::T serialization test use zorder.

Merge pull request #15958 from drwells/grid-tools-get-communicator

Simplify some GridTools functions.

reset ghost state in MG transfer global coarsening interpolate

Unify headers of tutorials

Simplify some GridTools functions.

We added Triangulation::get_communicator() awhile back so we don't need the cast
any more.

Merge pull request #15932 from peterrum/RayleighKotheVortex

Add Functions::RayleighKotheVortex

Merge pull request #15953 from bangerth/assertion

Add an assertion to IndexSet::compress().

Add Functions::RayleighKotheVortex

Add an assertion to IndexSet::compress().

Merge pull request #15950 from kronbichler/simplify_code

FEEvaluation for Raviart-Thomas: use fewer multiplications

Merge pull request #15949 from kronbichler/remove_check

Also run check for symmetry for fe_degree = 0

Merge pull request #15948 from kronbichler/rt_test

Add matrix-free interpolation test for Raviart-Thomas case

Added another test for limit_p_level_difference().

Add matrix-free interpolation test for Raviart-Thomas case

FEEvaluation for Raviart-Thomas: use fewer multiplications

Also run check for symmetry for fe_degree = 0

Merge pull request #15947 from marcfehling/mf-hangingnode

Added one assertion to setup_line_to_cell.

Added one assertion to setup_line_to_cell.

Merge pull request #15941 from kronbichler/pad_some_arrays