Version 0.3.1

Version 0.3.1 is a bug fix and minor feature release of Celeritas targeted at supporting
experiment frameworks. Key enhancements are:

• More track and step attributes can be set when calling back to Geant4 sensitive detectors.
• Offloaded tracks can be exported as a HepMC3 event file.
• Sensitive detectors callbacks from Celeritas can be disabled with a new macro flag.
• Linking against Geant4 10.5 is supported.
• A new diagnostic in celer-g4 prints step distributions from Geant4 CPU execution.

Key fixes:

• Backward compatibility with Geant4 10.6 is restored.
• Having multiple MSC models defined in Geant4 prints a warning instead of aborting execution.
• Initializer capacity in celer-sim is now scaled to be per thread.

New features

• Launch kernels only with active tracks using "action range" (@esseivaju, #765)
• Add utility for constructing SD "force_volumes" option (@sethrj, #825)
• Add scoped NVTX ranges for improved profiling (@esseivaju, #827)
• Add isotope data to MaterialParams (@stognini, #831)
• Add ScopedProfiling to device actions (@esseivaju, #836)
• Gather and set more Step/Track attributes when calling sensitive detectors (@sethrj, #839)
• Add isotope selector (@stognini, #843)
• Add a HepMC3 event writer (@sethrj, #851)
• Add option to disable Celeritas offloading in celer-g4 (@amandalund, #860)
• Add option to dump offloaded tracks as an event file (@sethrj, #854)
• Expose SDSetupOptions "enabled" flag in SetupOptionsMessenger (@drbenmorgan, #859)
• Add track step counter to celer-g4 (@amandalund, #862)
• Define arithmetic operators for Array (@sethrj, #868)
• Support [email protected] (@sethrj, #869)
• Add __launch_bounds__ to kernels based on Executor properties (@esseivaju, #853)
• Add option to use RZ magnetic field and along step action in the celer-g4 application (@whokion, #874)
• Add basic field driver option support to RZ map field (@sethrj, #880)

Reviewers: @sethrj (10), @amandalund (3), @whokion (3), @hhollenb (1), @drbenmorgan (1)

Bug fixes

• Fix errors when building and loading Celeritas through CMSSW (@sethrj, #821)
• Divide initializer capacity by number of streams in celer-sim (@amandalund, #824)
• Fix build errors from Geant4@10 (@drbenmorgan, #830)
• Fix default combined_brems option to work with multiple-element materials (@sethrj, #837)
• Fix app/demo-geo-check test failure when using MPI (@stognini, #838)
• Unify convergence criteria in field driver (@sethrj, #829)
• Fix minor issues with exceptions (@sethrj, #846)
• Fix linking errors with CUDA+VecGeom caused by #847 (@pcanal, #856)
• Fix inconsistencies in Geant4-to-VecGeom boolean conversion (@sethrj, #857)
• Fix HepMC3 reading of vertices and status codes (@sethrj, #863)
• Restore "small step updates momentum" condition (part of #875) in field propagator (@sethrj, #882)

Reviewers: @amandalund (5), @sethrj (4), @whokion (2), @esseivaju (1)

Documentation improvements

• Update CI to VecGeom 1.2.3 (@sethrj, #819)
• Document how to link loadable shared libraries with Celeritas (@drbenmorgan, #842)
• Extend geometry robustness testing (@sethrj, #858)

Reviewers: @pcanal (1), @sethrj (1), @amandalund (1)

Minor internal changes

• Add field template deduction and parameterized test (@sethrj, #820)
• Improve logger construction and add test helper class (@sethrj, #826)
• Hotfix: fix warning when building with Geant4@11 (@sethrj, #833)
• Remove variadic templating from track executor (@sethrj, #832)
• Refactor hit manager SD mapping (@sethrj, #835)
• Apply C++ core guidelines for copy/move assignment/construction (@esseivaju, #834)
• Add screening_factor to ImportEmParameters (@stognini, #840)
• cmake-rdc: add support for MODULE library. (@pcanal, #848)
• Add some quality-of-life CMake defaults (@sethrj, #847)
• Require semicolon for statement-like CELER_X_COPY_MOVE macros (@sethrj, #855)
• Hotfix: fix duplicate HepMC3 symbols by creating a wrapper function (@sethrj, #865)
• Fix large function warnings by disabling device debug code by default (@sethrj, #866)
• Add PolyEvaluator deduction guides (@hhollenb, #871)
• Add thread-safe assertion to RootStepWriter (@stognini, #873)
• Export full Celeritas version string as well as defaulted CMake variables (@sethrj, #870)
• Reuse chord length between successive field advances (@sethrj, #875)
• Improve polynomial deduction guide (@sethrj, #878)
• Validate KernelParamCalculator block size using CUDA/HIP function attributes (@esseivaju, #877)

Reviewers: @sethrj (6), @amandalund (5), @drbenmorgan (3), @pcanal (2), @hhollenb (2), @esseivaju (1), @whokion (1)

Full Changelog: v0.3.0...v0.3.1