PySDM v1.2

TOP 5:

• new adaptivity controls for SDM coalescence (kudos @piotrbartman!)
• new smart scheduling for parallel execution in multi-cell adaptive coalescence (for both GPU and CPU)
• new environment: kinematic_1D
• new example based on Shipway & Hill 2012 using PyMPDATA 1D advection
• major refactors around storage logic and coalescence-related backend methods

Other news:

• numerous fixes to support 1D simulations
• several physics formulae residing in environment code moved to physics
• new products: CoalescenceTimestepMean, CoalescenceTimestepMin, WaterMixingRatio
• support for atomicMin() in FakeThrustRTC
• test_todos_annotated.py - checking if all TODOs in the code have a valid GitHub issue number
• major cleanups (incl. removal of numerous obsolete backend tests)
• new tests: adaptive coalescence, new example

PySDM v1.1

TOP5:

• major refactor of backend storage classes (including introduction of Index, PairIndicator and PairwiseStorage)
• support for calculating moments on GPU with parallel sums using atomicAdd (thanks @tehAgitto)
• fakeThrust machinery for testing GPU code on CPU (incl. C to Python translation) and the backends fixture for pytests (kudos @piotrbartman!)
• PySDM_tutorials folder with minimal usage examples for the "box" and the "parcel" environments depicting how to use PySDM from Python, Matlab and Julia + minimal example for the "kinematic_2d" environment in Python
• initialisation logic refactored and moved to init_attributes() methods in environments

Other news:

• added continuous integration scripts for Github Actions (Windows, macOS, Linux) and Appveyor (32-bit and 64-bit Windows jobs)
• support for switching floating point format on GPU backend, fixed int overflow issues in Thrust C code
• introducing alias backend names: CPU=Numba and GPU=ThrustRTC
• CUDA detection code with hints for Colab users
• Bartman et al. 2021 example with animation generated from netCDF file
• fixed tolerance handling in bisection + adjusted default tolerances for condensation
• switched from mendeleev to molmass package as dependency for physical constants
• setup.py file for installation with pip
• removed dependency on mpmath (mpmath.besseli -> scipy.special.ive)
• relocation of all product classes into PySDM/products
• renamed ICMW_2012_case_1 to Arabas_et_al_2015_Figs_8_9
• added widgets and temporary_file in PySDM_examples/utils including helper logic for downloading files from Colab
• fixed ipywidgets no-icons problem on Colab ("display(HTML(...))" with in widgets/init.py)
• renamed all Setup classes to Settings (not to have multiple setup.py files which puzzled Dependabot)
• work in progress towards cell-wise adaptivity for coalescence (still guarded with not-implemented exception)
• new products: CollisionRate, CollisionRateDeficit, SurfacePrecipitation
• use "-We" flag for python in CI scripts to trigger error on warnings (what triggered numerous cleanups)
• switch from TRAVIS to CI env var whenever checking for continuous integration environment
• README and notebook header enhancements (incl. Colab and mybinder badges in notebook headers)
• more metadata in netCDF output
• moved timing logic from stats.py into products
• renamed State to Particles
• simplified inheritance in environments
• AmbientThermodynamics dynamic
• more parrallel=True/prange loops in numba backend
• automatic initial spectrum range by specifying sampling region with percentiles
• adapted EulerianAdvection to new PyMPDATA API (MPyDATA->PyMPDATA, advectee, advector)
• enforcing stateless backends by preventing instantiation with an exception in init

PySDM v1.0

Initial release accompanying Piotr Bartman's MSc thesis and featuring:

• coalescence with adaptive time step (CPU, GPU)
• condensation with adaptive time step (CPU)