PySDM

Spec sheet

Purpose

PySDM simulates particle populations undergoing diffusional and collisional growth and breakage, with a focus on atmospheric cloud physics and aerosol, cloud, and rain microphysics.Read 11 Oct 2026 · open-atmos.github.io

Intended users

The package is intended as a building block for simulation systems involving dispersed phases, with development focused on atmospheric cloud physics applications.Read 11 Oct 2026 · open-atmos.github.io

Free plan

YesRead 23 Sep 2026 · open-atmos.github.io

Support

The project recommends GitHub Discussions for help understanding, using, and extending PySDM, and its GitHub issue tracker for reporting incorrect or undocumented behavior.Read 11 Oct 2026 · open-atmos.github.io

License

PySDM and PySDM-examples are free/libre open-source software released under the GNU GPL v3 license.Read 11 Oct 2026 · open-atmos.github.io

Authoring tools

YesRead 23 Sep 2026 · open-atmos.github.io

Compute backends

The documentation describes a multithreaded CPU backend, a CUDA GPU backend, and a JAX backend that is early in development.Read 11 Oct 2026 · open-atmos.github.io

Core method

It implements the Super-Droplet Method Monte Carlo algorithm for representing collisional growth.Read 11 Oct 2026 · open-atmos.github.io

Data export

YesRead 23 Sep 2026 · open-atmos.github.io

Delivery mode

hybridRead 23 Sep 2026 · open-atmos.github.io

GPU requirement

The GPU backend requires NVIDIA hardware and a CUDA driver.Read 11 Oct 2026 · github.com

Installation

PySDM is available from PyPI and can be installed with pip; the documentation also gives instructions for installing from a local Git checkout.Read 11 Oct 2026 · open-atmos.github.io

Lesson library

YesRead 23 Sep 2026 · open-atmos.github.io

Model setups

Examples cover box, parcel, single-column, and two-dimensional prescribed-flow environments.Read 11 Oct 2026 · open-atmos.github.io

Notebook access

Example notebooks have badges for launching them on Google Colab or mybinder.org, and the notebooks themselves are not included in the examples package wheels.Read 11 Oct 2026 · open-atmos.github.io

Processes

The example gallery covers condensation, collisional coagulation and breakup, drop freezing, isotopic fractionation, aqueous chemistry, and seeding.Read 11 Oct 2026 · open-atmos.github.io

Related software

PyMPDATA is used for advection in the single-column and two-dimensional prescribed-flow examples.Read 11 Oct 2026 · open-atmos.github.io

Plans and prices

Every PySDM plan and price →

Where Specifiction places it

• Physics Simulation Software#28 of 898.1