This is a non-comprehensive log of changes to the code.
Version 1.6 is a point release, primarily notable for the new parallel halo finder (see Halo Finding)
- (New) Parallel HOP ( http://arxiv.org/abs/1001.3411 , Halo Finding )
- (Beta) Software ray casting and volume rendering (see Volume Rendering)
- Rewritten, faster and better contouring engine for clump identification
- Spectral Energy Distribution calculation for stellar populations (see Synthetic Spectrum Generator)
- Optimized data structures such as the hierarchy
- Star particle analysis routines (see Star Particle Analysis)
- Halo mass function routines (see Halo Mass Function: Start to Finish)
- Completely rewritten, massively faster and more memory efficient Particle IO
- Fixes for plots, including normalized phase plots
- Better collective communication in parallel routines
- Consolidation of optimized C routines into amr_utils
- Many bug fixes and minor optimizations
Version 1.5 features many new improvements, most prominently that of the addition of parallel computing abilities (see Parallel Computation With YT) and generalization for multiple AMR data formats, specifically both Enzo and Orion.
- Rewritten documentation
- Fully parallel slices, projections, cutting planes, profiles, quantities
- Parallel HOP
- Friends-of-friends halo finder
- Object storage and serialization
- Major performance improvements to the clump finder (factor of five)
- Generalized domain sizes
- Generalized field info containers
- Dark Matter-only simulations
- 1D and 2D simulations
- Better IO for HDF5 sets
- Support for the Orion AMR code
- Spherical re-gridding
- Halo profiler
- Disk image stacker
- Light cone generator
- Callback interface improved
- Several new callbacks
- New data objects – ortho and non-ortho rays, limited ray-tracing
- Fixed resolution buffers
- Spectral integrator for CLOUDY data
- Substantially better interactive interface
- Performance improvements everywhere
- Command-line interface to many common tasks
- Isolated plot handling, independent of PlotCollections
- Initial release!