GB-25

This repository accompanies a submission for the 2025 Gordon Bell climate prize submission that showcases Reactant-acceleration of Oceananigans, ClimaOcean, and SpeedyWeather simulations.

Package organization

• src implements two models:

  • GordonBell25.data_free_climate_simulation_init, which uses ClimaOcean to drive an Oceananigans HydrostaticFreeSurfaceModel
  • GordonBell25.baroclinic_instability_model, a simpler, unforced, pure Oceananigans setup.
  • Both models can be to use either a LatitudeLongitudeGrid or a TripolarGrid with idealized bathymetry.

• simulations: scripts to i) compile and ii) run either of the two models

• sharding: scripts and utilities that use XLA's sharding to distribute computations across multiple nodes. Oceananigans uses its Distributed architecture to represent sharding across nodes.

• ext: many small packages that each precompile part of a model time-step, in order to accelerate compilation during intensive jobs.