v1.4

[slayoo]

TOP 5:

• condensation on GPU (and required updates to FakeThrust, e.g. extract_struct_defs()); parcel and 1d-kinematic examples work now OK on both CPU and GPU; kudos to @piotrbartman

• numerous cleanups and fixes in aqueous chemistry code, incl. rewrite of pH handling (HydrogenIonConcentration attribute), options to calculate both volume-weighted and number-weighted pH, calculation of dry radius based on actual amounts of chemical compounds; several figures from Kreidenweis et al. 2003 and Jaruga and Pawlowska 2018 reproduced successfully; kudos to @trontrytel

• VTK exporter for attributes (files readily usable with Paraview for visualisation of particle attributes); kudos to @abulenok

• brand new PySDM.physics infrastructure enabling common physics code for CPU and GPU backends (c_inline) and enabling user-facing control over the choice of physical formulae (e.g., condensation solver coordinate, saturation vapour pressure approximation, temperature dependence in diffusion coefficients, etc), JIT options and random seed through the Formulae.__init__() arguments; backend are now instantiated by the Builder;

• Julia and Matlab (in addition to Python) example code in the README file (box coalescence & parcel condensation).

Other news:

• deployment of pdoc-generated API manual to GitHub pages (https://atmos-cloud-sim-uj.github.io/PySDM/);
• multi-threaded operation for moment calculation on CPU (using atomic_* functions from github.com/KatanaGraph/katana)
• surface precipitation calculations on GPU
• numerous fixes in GPU backend routines, including gently handling zero-length For launches
• replaced bisection with TOMS-748 in the Numba backend (for r_wet_init, condensation implicit Euler and pH calculation)
• thread-safe handling of "success" checks within condensation solver
• simplification of the BDF code (test helper for validation condensation solver)
• running Julia and Matlab examples on GitHub Actions
• products: removed range and scale fields (now only defined in the ICMW example)
• many more tests work on GPU now (displacement, condensation, ...)
• widget freezer in Shima_et_al_2009 example
• cleanups in docstrings

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This discussion was created from the release v1.4.

[slayoo]

@atmos-cloud-sim-uj/pysdm-users we've just released PySDM v1.4 with many new features summarised above. Feedback very welcome!