Overview
This section covers everything beyond a single forward run: how IGM configurations are structured and composed, how to sweep parameters across ensemble runs, how to optimize model parameters against observations, and how to migrate between IGM versions.
Hydra
Manage parameters, compose configurations, run ensemble sweeps, and deploy on clusters using the Hydra framework.
Optuna
Run Bayesian or multi-objective parameter optimization with the built-in IGM–Optuna sweeper, with full GPU and cluster support.
IGM v2 → v3
Transitioning from IGM v2? This guide covers the key changes in configuration syntax, module names, and parameter structure.
IGM v3.1 → v3.2
Upgrading from IGM v3.1? This guide covers the breaking changes: the unified ice-flow stack, renamed sliding/viscosity parameters, the new assimilations modules, and the umbrella smb/climate modules.