2024.5

A few stability features.

• Forced reconnection at the pole for transmitting boundary conditions
• Some more flexible boundary conditions generally
• Ideal GRMHD guesses in EGRMHD
• More flexible floor prescriptions and FOFC application
• Eliminated some compile warnings

KHARMA 2024.4

Lots of features which were waiting for the last release (e-, multizone, reconstructions, CT schemes, etc), plus a ton of stability features to try to make the large-scale INCITE runs reliable with fewer of the traditional GRMHD crutches.

• First-order flux corrections (FOFC)
• Kastaun robust primitive variable recovery
• Multizone improvements
• Implicit/EMHD bugfixes
• electron temperature tracking fixes and tests
• Upwinded B fluxes
• New reconstruction schemes
• Split/simplified floor injection
• Reconstruction fallback
• "Transmitting" polar boundary conditions: correct ghosts and EMFs on polar edges, but no excision

KHARMA 2023.12

Highlights:

• SMR/AMR with new split face-centered B fields. New initialization for magnetic fields.
• Basic support for "multi-zone" chained overlapping runs (see dev for more recent progress there, though)
• EMHD with pivoted QR decomposition for stability
• HIP support
• Reorganized package structure with callbacks, simplified drivers (and new, simpler driver for testing)
• Most features are now split into packages, reducing weight of GRMHD package and non-package components
• Much faster and more extensible machinery for reductions, incl. counting failure/floor flags, etc.
• New package for handling boundaries allowing user boundary choices
• Simplify problems, e.g. single Bondi problem
• Simplified range management with KDomain, eliminate some of the more confusing lambda conventions for loops
• Move to nearly main-line Parthenon, simplify other dependencies

KHARMA 2022.12

As used for up-scaled "focused" runs of the ngGRMHD library.

Support for interpolation and magnetic field cleanup, better tests & CI features. Significant code cleanup and several new convenience features when compiling. Faster file I/O and MPI Reductions thanks to Parthenon improvements.

KHARMA 2022.3

KHARMA as used to begin "base" production runs of ngGRMHD INCITE project.

Fast, reliable, flexible & feature-complete core GRMHD evolution, plus core implementations of semi-implicit stepping and electron thermodynamics.