v4.0.0

We are happy to release v4.0.0 of t8code!
Enjoy reading through the release nodes, or have a look at the NEWS.md (or in the archive) of it, if you read this in the future) for the most important changes.

What's Changed

• Data handler diff approach by @Davknapp in #1244
• Pack opimization by @Davknapp in #1256
• Merge main into feature-cmesh_vertex_connectivity by @dutkalex in #1267
• version 3.0.0 by @ole-alb in #1282
• Fix wrong return value when checking tree geometry compat. by @jmark in #1285
• Fix various warnings by @dutkalex in #1284
• Fix CI parallelity by @sandro-elsweijer in #1277
• Remove autotools CI by @sandro-elsweijer in #1288
• Fix spelling-errors by @Davknapp in #1291
• Add missing const qualifiers by @dutkalex in #1293
• Feature ghost tuning by @holke in #1003
• Upgrade to C++ 20 by @Davknapp in #1298
• add assertion with error message by @ole-alb in #1304
• more const for split_array functions by @holke in #1302
• Fix: More robust connect cmesh faces by vertices and sphere cmesh examples by @jmark in #1296
• Remove Fortran from language dependencies when not needed. by @jmark in #1281
• Correct mail address by @sandro-elsweijer in #1308
• add placeholder for internal data handling by @ole-alb in #1274
• Update functionname to naming scheme by @Davknapp in #1310
• parametrized -> parameterized by @Davknapp in #1312
• Add version.txt to .gitignore by @sandro-elsweijer in #1313
• Fix: Add missing headers in order to import definitions. by @jmark in #1319
• Replaced all tscheme with scheme by @Davknapp in #1316
• Add ctest Testing folder to .gitignore by @sandro-elsweijer in #1321
• Add tag labels to pr template by @sandro-elsweijer in #1322
• Scheme CRTP Update by @sandro-elsweijer in #1243
• More finely graded Warning-flags for CMake by @Davknapp in #1315
• Increase ci timeout limit by @sandro-elsweijer in #1324
• increase ci timeout limit (again) by @sandro-elsweijer in #1325
• Update README.md by @sandro-elsweijer in #1328
• Configure with -O1 on debug-builds by @Davknapp in #1326
• Correct typos by @sandro-elsweijer in #1332
• Move fortran debug flag by @Davknapp in #1335
• Update element-functions by @Davknapp in #1334
• Remove code duplication by @sandro-elsweijer in #1290
• fixed missing Assertion by @Davknapp in #1336
• Add getter for scheme eclass by @sandro-elsweijer in #1341
• Multiple schemes tests by @ole-alb in #1300
• Remove duplicate declaration by @Davknapp in #1343
• Avoid dynamic allocation in element-functions by @Davknapp in #1347
• Avoid dynamic allocations with hard-coded numbers by @Davknapp in #1348
• Fix dquad/pquad confusion bug by @holke in #1339
• Add element ancestor test by @sandro-elsweijer in #1346
• Disable build noise from sc and p4est by @dutkalex in #1283
• Remove old libsc option by @dutkalex in #1350
• Make all schemes const by @ole-alb in #1349
• Standalone scheme by @ole-alb in #1331
• Revert loop to prevent overwriting of the input element by @ole-alb in #1356
• Fix benchmarks by @sandro-elsweijer in #1344
• Feature search cpp interface by @Davknapp in #1297
• add interface for replicated partition search by @hannesbrandt in #1286
• Switch the order of coords and level by @ole-alb in #1360
• Test all schemes in forest tests by @ole-alb in #1352
• Add temporay default scheme macro by @ole-alb in #1366
• add a function to pretty print scheme and eclass by @Davknapp in #1364
• Test input = output by @ole-alb in #1363
• use occ as system include by @Davknapp in #1372
• introduce more setters to the vtk writer by @Davknapp in #1358
• Fix error in default quad scheme by @ole-alb in #1378
• Remove partition warning by @ole-alb in #1379
• Fixed vtk read documentation by @tunxu in #1381
• Correct order of execution in docu and some typos by @lenaploetzke in #1382
• Adding link to JOSS paper in README.md. by @jmark in #1387
• correct typo in name by @sandro-elsweijer in #1388
• link to gtest as system-library by @ole-alb in #1389
• Strong types by @Davknapp in #1309
• Bfs test by @Davknapp in #1386
• Update all github-runners to ubuntu-22.04 by @Davknapp in #1393
• Update GitHub Runners by @sandro-elsweijer in #1394
• Add new test for linear id by @ole-alb in #1380
• Update p4est by @lukasdreyer in #1395
• Use linux line endings by @lukasdreyer in #1391
• constexpr for strong types by @Davknapp in #1396
• Improvements to the tutorials by @lenaploetzke in #1399
• fix typos by @Davknapp in #1402
• avoid doubling of cmake install path by @lukasdreyer in #1390
• Minor corrections to the forest_general documentation by @lenaploetzke in #1401
• Delete obsolete function by @Davknapp in #1410
• Replace pragma by include guard by @lenaploetzke in #1408
• Added copyright information to gtest_main by @lenaploetzke in #1411
• Activate CI for follow-up PRs by @sandro-elsweijer in #1398
• Impr remove t8 dvertex bits by @spenke91 in #1409
• enable the usage of a merge queue by @Davknapp in #1412
• Printable strong types by @Davknapp in #1400
• Scheme tutorial by @Davknapp in #1359
• Update vec c interface by @Davknapp in #1416
• Ifdef t8 enable script by @Davknapp in #1375
• Replaced ENABLE_LESS_TESTS by TEST_LEVEL by @lenaploetzke in #1413
• Fix operator warning by @sandro-elsweijer in #1424
• Fix ghost warning by @sandro-elsweijer in #1419
• Add corner_face_function by @ole-alb in #1362
• Update vec by @ole-alb in #1307
• Test RandomAccessible operator by @ole-alb in #1421
• Adapt documentation paragraph in README by @lenaploetzke in #1405
• Remove doubled underscores in test names by @lenaploetzke in #1426
• Correct some typos and remove unused code by @lenaploetzke in #1427
• Minimal tests for test level 2 by @lenaploetzke in #1418
• Improve CI to a more finegrained CI by @Davknapp in #1429
• Remove unimplemented t8_mesh by @lukasdreyer in #1433
• Feature conditioned compilation for netcdf by @lukasdreyer in #1435
• Fix various warnings by @dutkalex in #1414
• Reduce runtime for TEST_LEVEL == 2 by @lukasdreyer in #1444
• Adapt iterate replace test for test levels 1 and 2 by @lenaploetzke in #1446
• Added missing copyright statement in check_macros script by @lenaploetzke in #1450
• also run the CI when a Draft-PR is converted into a PR by @Davknapp in #1451
• change file suffix for script files from scp to sh by @lenaploetzke in #1448
• Fix typo in pre-commit script by @lenaploetzke in #1456
• Bugfix: Memory leak in test t8_gtest_geometry_linear by @lenaploetzke in #1455
• Bugfix: Memory leak in test t8_IO/t8_gtest_vtk_writer by @lenaploetzke in #1457
• Bugfix: Invalid read size by @lenaploetzke in #1459
• rename get_root -> set_to_root by @Davknapp in #1434
• Improvement: Rework Pull Request template by @lenaploetzke in #1440
• Remove macro checker by @sandro-elsweijer in #1462
• [2/4] Add valgrind check to ci by @lenaploetzke in #1452
• Bugfix: Replace T8_ENABLE_LESS_TEST by T8CODE_TEST_LEVEL by @lenaploetzke in #1471
• [1/4] Add valgrind check to ci by @lenaploetzke in #1438
• Move element_find_owner to public interface by @lukasdreyer in #1445
• Improvement: Only use T8_WITH_NETCDF if necessary by @Davknapp in #1469
• Feature wextra by @lukasdreyer in #1442
• [3/4] Add valgrind check to ci by @lenaploetzke in #1453
• Documentation: set join orientation by @sandro-elsweijer in #1482
• Enhancement: Element is refinable check by @sandro-elsweijer in #1484
• Standalone scheme face functions by @ole-alb in #1345
• Improvement: Remove inconsistent line from PR template by @lenaploetzke in #1496
• Bugfix: vtk writer num_cells_to_write [1/3] by @holke in #1490
• [4/4] Add valgrind check to ci by @lenaploetzke in #1460
• Improvement: Dinstinguish internal header files from public ones by @spenke91 in #1474
• Enhancement: Align standalone to coding guidelines by @sandro-elsweijer in #1498
• Documentation: Fix standalone scheme documentation by @sandro-elsweijer in #1483
• Fix some typos by @sandro-elsweijer in #1506
• Bugfix: Change strategy to find test binaries for valgrind ci by @lenaploetzke in #1512
• Improvement: [1/2] Rename macros T8_WITH_ to T8_ENABLE_ by @lenaploetzke in #1468
• Fix set_linear_id for prisms by @hannesbrandt in #1520
• Fix syntax in geo files by @sandro-elsweijer in #1463
• Bugfix: Fix CI problem with documentation by @lenaploetzke in #1521
• Improvement: Fix a typo by @Davknapp in #1526
• Fix typos and add ".md" to README by @lenaploetzke in #1518
• Improvement: [2/2] Use #if instead of #ifdef for macros T8_ENABLE by @lenaploetzke in #1470
• Improvement: Leave the CMAKE_C/CXX_STANDARD global variables alone by @dutkalex in #1525
• Fix some includes by @sandro-elsweijer in #1513
• Fix some other includes by @sandro-elsweijer in #1514
• Feature: Added workflow files to automize project board usage. by @Davknapp in #1499
• Bugfix: remove constexpr qualifier by @dutkalex in #1524
• Bugfix: More robust handling of labels by @Davknapp in #1538
• Documentation: Document issue wf by @Davknapp in #1531
• Bugfix: Handle draft prs by @Davknapp in #1540
• Add AMR25 conference information to README by @lenaploetzke in #1544
• Bugfix: Connect issue to project by @Davknapp in #1543
• Bugfix: Fix vtk api by @Davknapp in #1511
• Bugfix: Fix wrong paths in pre-commit script by @spenke91 in #1535
• Improvement: Add type for bug issue_template by @Davknapp in #1549
• Improvement: Automatically set issue type to feature by @Davknapp in #1551
• Bugfix: Issue Template by @ole-alb in #1553
• Bugfix: Error in feature Template by @ole-alb in #1555
• Bugfix: T8ddy learns how to use a page to iterate over all items in a project by @Davknapp in #1565
• Improvement: Rename ts_context by @ole-alb in #1566
• Improvement: Change default value of T8CODE_BUILD_TPL_TESTS option to OFF by @lenaploetzke in #1568
• Automatically mark sc and p4est options as advanced by @sandro-elsweijer in #1570
• Bugfix: Fix geometry example by @sandro-elsweijer in #1582
• Bugfix: Remove curved assertion by @sandro-elsweijer in #1584
• Bugfix: ignore the case for the letter "C" in "Closes" by @Davknapp in #1587
• Bugfix: constexpr error by @ole-alb in #1530
• Improvement: redesigns vtk compilation by @faouziH21 in #1481
• Improvement: Remove package update in indent workflow by @sandro-elsweijer in #1602
• Feature cmesh vertex connectivity by @holke in #960
• Improvement: Get rid of T8_ENABLE_OCC in headers by @Davknapp in #1612
• Bugfix: Fix memory leak. by @Davknapp in #1617
• Improvement: Remove conference information from README by @lenaploetzke in #1618
• Scheme improvements by @sandro-elsweijer in #1596
• Bugfix: Missing utility header include by @holke in #1620
• Rework msh reader by @sandro-elsweijer in #1423
• Other: Remove deprecated indent macro by @sandro-elsweijer in #1626
• Add global vertex id to msh file reader by @LenaRadmer in #1397
• Bugfix: is_refinable usage by @sandro-elsweijer in #1598
• Bugfix: msh node conversion tables by @sandro-elsweijer in #1475
• Feature: Implement computation of the first element of a process by @Davknapp in #1579
• Other: Improved documentation, more assertions by @Davknapp in #1589
• Feature: Test first elem computation by @Davknapp in #1577
• Bugfix: CMake Install paths by @Davknapp in #1516
• Other: Add Valgrind reminder to PR template by @lenaploetzke in #1636
• Feature: Add t8_cmesh_vertex_conn_vertex_to_tree to the cmesh interface and remove headers from public interface by @holke in #1622
• Other: Added missing copyright information for issue board workflows by @lenaploetzke in #1638
• Other: Slim down mattermost bot by @lenaploetzke in #1634
• Feature: vector split by @Davknapp in #1591
• Feature: add get_max_num_children by @ole-alb in #1649
• Feature: strong type conversion [1/2] by @holke in #1662
• Update orcid by @ole-alb in #1665
• Other: Add license information to cmake files by @lenaploetzke in #1668
• Improvement: Renamed forest functions to explicitly say leaf elements by @spenke91 in #1606
• Improvement: Renamed forest variables to explicitly say leaf element by @spenke91 in #1608
• Improvement: Improve test pretty print by @ole-alb in #1670
• Improvement: Decrease test level by @Davknapp in #1673
• Feature: Generate Code Coverage report by @lenaploetzke in #1563
• Other: Added section for renamed macros to NEWS.md by @lenaploetzke in #1676
• Improvement: Reduce depth of descendant test by @Davknapp in #1674
• Improvement: Speed up element is leaf test by @Davknapp in #1679
• Improvement: Reduce t8_gtest_forest_commit complexity for testlevel 2 by @Davknapp in #1680
• Improvement: Run code coverage workflow for every commit by @lenaploetzke in #1685
• Improvement: Tests are family by @ole-alb in #1683
• Improvement: Runtime of nca test by @Davknapp in #1678
• Improvement: Do not upload a code coverage report in the merge queue by @lenaploetzke in #1689
• Bugfix: Wrong vector operations in benchmark by @sandro-elsweijer in #1696
• Bugfix: Fix small typo by @ole-alb in #1699
• Other: Fix an 8 year old typo by @sandro-elsweijer in #1692
• Fix typo in documentation by @sandro-elsweijer in #1694
• Fix: CI updates run into 403 error. by @holke in #1701
• Improvement: Remove depricated lines from benchmark by @ole-alb in #1708
• Other: Add date of creation to entries in issue board by @spenke91 in #1707
• Improvement: Better handling of hashes and errors in t8_geometry [2/2] by @holke in #1656
• Pack/Unpack data for user-data by @Davknapp in #1224
• Tetsuite memory management by @sandro-elsweijer in #1431
• Improvement: move bin search to forest private by @holke in #1640
• Documentation: t8_dtet_type_face_to_boundary by @schok6 in #1713
• Fix: Use testsuite alloc by @sandro-elsweijer in #1717
• Bugfix: Do not send to self via blocking send by @Davknapp in #1721
• Fix a typo which makes spell check fail by @sandro-elsweijer in #1729
• Fix: Remove unnecessary cmake paths by @sandro-elsweijer in #1727
• Feature: Local cmesh bounds by @Davknapp in #1659
• Improvement: Introduce names for test levels by @spenke91 in #1731
• Improvement: Minor vtk corrections by @sandro-elsweijer in #1476
• Improvement - Performance of the current VTK writer in t8code by @Flatken in #1651
• Documentation: Fix doxygen by @Davknapp in #1741
• Documentation: Fix cmesh doxygen by @Davknapp in #1757
• Feature: enable logs redirection by @dutkalex in #1705
• Bugfix: Install vertex connectivity headers by @Davknapp in #1763
• Feature vtk reader vertex connectivity by @tunxu in #1430
• Bugfix: Overflowing datatype in test by @sandro-elsweijer in #1769
• Other: Feature new for hybrid by @Davknapp in #1776
• Improvement: Remove a magic number by @sandro-elsweijer in #1779
• Documentation: Fix doxygen errors. by @Davknapp in #1774
• Improvement: Fix an argument name by @sandro-elsweijer in #1781
• Bugfix: local search by @hannesbrandt in #1768
• Other: Find netcdf by @Davknapp in #1787
• Bugfix: incremental CMake configure by @dutkalex in #1792
• Fix some weird compiler errors by @sandro-elsweijer in #1789
• Bugfix: Fix installed headers by @Davknapp in #1797
• Other: Fix t8_geometry documentation by @sandro-elsweijer in #1796
• Improvement: Reduce vertex maxlevel and document it by @sandro-elsweijer in #1802
• Improvement: Implement missing functions in vertex connectivity by @sandro-elsweijer in #1758
• Feature:Fortran valgrind by @Davknapp in #1814
• Feature:Activate fortran api compilation in codecov run by @Davknapp in #1812
• Bugfix: Extend valgrind suppression file by fortran related errors by @lenaploetzke in #1817
• Bugfix: pr action by @Davknapp in #1822
• Feature add vertex information2 by @LenaRadmer in #1572
• Fix: OpenMPI linkage by @sandro-elsweijer in #1794
• Improvement: Outsource cad utility function by @sandro-elsweijer in #1826
• Improvement: Correct some small typos by @lenaploetzke in #1831
• Improvement: Make quick_pr more robust. by @Davknapp in #1833
• Improvement: add context hooks in CMakeLists.txt by @dutkalex in #1838
• Other: Remove conference information from README by @lenaploetzke in #1839
• Bugfix: GH_TOKEN by @Davknapp in #1841
• Bump actions/download-artifact from 4 to 5 by @dependabot[bot] in #1828
• Bump actions/checkout from 4 to 5 by @dependabot[bot] in #1835
• Doxumenation: fix doxygen errors in standalone by @lukasdreyer in #1846
• Documentation: Fix docu t8 types by @Davknapp in #1830
• Fix t8 scheme documentation by @holke in #1848
• fix doxygen in t8_forest/t8_forest_search by @Davknapp in #1849
• Documentation: Fix t8 data documentation by @Davknapp in #1827
• Other: Add status badge for docs by @lenaploetzke in #1859
• Improvement: Rename variables from t to element in t8 scheme default by @lenaploetzke in #1864
• Bugfix: Corrected outdated debug flag in t8_forest_iterate.cxx by @spenke91 in #1862
• Documentation: Fix t8 default scheme documentation by @lenaploetzke in #1858
• Documentation: Fix doxygen errors in src by @lukasdreyer in #1850
• Sphinx documentation update by @Davknapp in #1719
• Documentation: Add doxygen documentation to remaining static functions in folder src/t8_forest/ by @spenke91 in #1868
• Documentation: Fix doxygen errors and update documentation in src/t8_forest/ directory. by @spenke91 in #1867
• Bugfix: global logging with local info in t8_forest_ghost by @dutkalex in #1877
• Improvement: clearer error message when creating a distributed cmesh by @dutkalex in #1874
• Other: Oops I deleted autotools by @sandro-elsweijer in #1660
• Documentation: Fix some typos by @lenaploetzke in #1882
• Other: Fix some typos by @JoshuaLampert in #1886
• Feature: enable t8_cmesh_get_global_vertices_of_tree( ..., ..., nullptr ) by @dutkalex in #1885
• Improvement: Change location of CodeCoverage include in cmake by @lenaploetzke in #1880
• Feature: Use flat vector for unstructured mesh interface by @lenaploetzke in #1892
• Documentation: Remove further doxygen errors (doxygen version 1.9.1) by @spenke91 in #1891
• Improvement: Remove vertex renumbering and make negative volume check optional by @sandro-elsweijer in #1786
• Documentation: shmem_array_start_writing documentation by @Davknapp in #1724
• Add timing of big arrays in forest by @lukasdreyer in #1904
• Improvement: Custom competence test for mesh interface by @lenaploetzke in #1895
• Documentation: Fix doxygen warnings observed for newer Doxygen version (such as 1.3.2) by @spenke91 in #1894
• Bump actions/download-artifact from 5 to 6 by @dependabot[bot] in #1927
• Bump actions/upload-artifact from 4 to 5 by @dependabot[bot] in #1928
• Fix: Strong types by @sandro-elsweijer in #1933
• Improvement: Add a scheme helper class for general schemes by @sandro-elsweijer in #1898
• Improvement: Throw an error if t8_cmesh_copy() is called for a cmesh using vertex connectivity by @spenke91 in #1897
• Feature: Interface as cmake library by @lenaploetzke in #1914
• Improvement: Improve the predictability of Codecoverage by @lenaploetzke in #1931
• Cmake: Remove ${} from if clauses by @lenaploetzke in #1948
• Improvement: Rename unstructured mesh interface by @lenaploetzke in #1923
• (Hopefully an) Improvement: Separate eclass variables into extern (C) and constexpr (C++) variables by @sandro-elsweijer in #1942
• Other: Fix typos and indent doxygen comments by @lenaploetzke in #1949
• Bugfix: VTK Output of empty partitions by @holke in #1954
• Feature: Add eclass string for invalid eclass by @holke in #1955
• Fix: clean up custom assertion test header by @holke in #1972
• Improvement: Move t8_cad.hxx/cxx to own folder src/t8_cad by @spenke91 in #1926
• Bugfix: fix empty struct warning by @dutkalex in #1888
• Update documentation link to Read the Docs by @sandro-elsweijer in #1970
• Only add a proc once to owners by @lukasdreyer in #1917
• Bugfix: Fix issue 1951 half face neighbor order by @holke in #1952
• Improvement: indent script hardening for BSD systems by @dutkalex in #1975
• Feature: Enable VTK ASCII output of Ghost data [3/3] by @holke in #1493
• Feature: Add a scalar and vector data field to VTK write test [2/3] by @holke in #1488
• feature: const all params in face iterator by @holke in #1968
• Fix: Valgrind tests failed due to memory error. Element destroy at wrong position. by @holke in #1978
• Bugfix: 1922 Non-initialized variable caused "jump based on uninitialized value" in t8_cmesh_uniform_bounds_from_unpartioned by @holke in #1983
• Enhancement: Add vector views and concepts by @sandro-elsweijer in #1940
• Documentation: improve ghost function documentation by @dutkalex in #1756
• Enhancement: Indent many files that were seemingly unchecked before. [2/2] by @holke in #1987
• Bugfix: (2nd try) 1922 Non-initialized variable caused "jump based on uninitialized value" in t8_cmesh_uniform_bounds_from_unpartioned by @holke in #1993
• Bump actions/checkout from 5 to 6 by @dependabot[bot] in #1992
• Enhancement: Clean up cmesh folder. New subfolders and better structure. Only moving files. by @holke in #1986
• Feature: Very first version of the unstructured mesh interface by @lenaploetzke in #1829
• Improvement: Add possibility to use mpi with valgrind to check_valgrind scripts by @lenaploetzke in #1990
• Bugfix: Ignore warnings when executing CMake tests by @holke in #1996
• Improvement: Restrict MPI to version 3.0 or higher by @holke in #1998
• Improvement: indent ignore list and unification of indent scripts [1/2] by @holke in #1688
• Bugfix: fix clang compilation by @dutkalex in #2001
• Bugfix: Geometry access of cad shapes by @sandro-elsweijer in #1878
• Feature: Compute the eclass of a tree or ghost neighbor in the cmesh by @holke in #1806
• Bugfix: add missing STL includes by @dutkalex in #2016
• Other: Add my ORCID by @spenke91 in #2019
• Documentation: Update NEWS.md for version 4.0 release by @holke in #2021
• Correct spelling and email in citation file by @dutkalex in #2023
• Other: Add Lenas ORCID by @spenke91 in #2024

New Contributors

• @hannesbrandt made their first contribution in #1286
• @tunxu made their first contribution in #1381
• @lenaploetzke made their first contribution in #1382
• @faouziH21 made their first contribution in #1481
• @Flatken made their first contribution in #1651
• @JoshuaLampert made their first contribution in #1886

Full Changelog: v3.0.0...v4.0.0