PhysicsNeMo 2.0 reorganises the framework into modular packages, with new mesh, diffusion and datapipe modules

NVIDIA releases PhysicsNeMo v2.0.0, a refactor of the open-source framework that the 26.03 release notes describe as a major architectural change toward a modular toolkit. Reusable layers move to physicsnemo.nn, the base Module class to physicsnemo.core, and physicsnemo.launch is removed; a compatibility layer (physicsnemo.compat) keeps old import paths working, and a migration guide lists the changes. New packages are physicsnemo.diffusion (noise schedules, samplers, losses, multi-diffusion), physicsnemo.mesh (GPU mesh processing for simplicial meshes of any dimension) and refactored GPU datapipes. The 26.03 notes also add training recipes for crash dynamics with Transolver and MeshGraphNet, for car aerodynamics volume fields with GeoTransolver, and for StormScope with a diffusion transformer.

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