Version 7.2 of the waLBerla framework.

Changelog

CMake & C++

• Bump minimum CMake version to 3.24
• Bump minimum CUDA version to CUDA 12 (!739 (merged))
• Bump C++ standard to C++20 and modernize the code base to use C++20 features (!736 (merged), !731 (merged), !743 (merged), !744 (merged), !750 (merged))
• Introduce native CMake support for HIP and update code generators accordingly (!729 (merged))
• Use modern CMake idioms for discovering and linking against CUDA/HIP libraries (!748 (merged))
• Remove GlobalState (!730 (merged))
• Use FetchContent to retrieve OpenMesh on demand (!749 (merged))
• Introduce FetchContent fallbacks for systems without internet access (!765 (merged))
• Refactor installation of the waLBerla Python module to latest standards (!769 (merged))

Infrastructure

• Completely overhaul the continuous integration and testing system (!737 (merged))
• Introduce a brand-new logo (!764 (merged))
• Introduce the Doxygen Awesome CSS theme (!764 (merged))

Feature Updates

• Refactored parallel IO interface (!742 (merged))
• Patches for mesh refinement in 2D (!752 (merged), !753 (merged))

Apps & Showcases

• Add new Kelvin-Helmholtz-Instability showcase (!741 (merged))

Bugfixes

• Fix index-out-of-bounds errors in communication schemes with sparse stencils (!734 (merged))
• Modernize StreamRAII and make GPU communication schemes safe to copy (!758 (merged))

Removals

• Remove the pe module (!719 (merged), !740 (merged))
• Remove deployment to conda-forge (!733 (merged))