enable checkpointing for CMIP by juliasloan25 · Pull Request #1796 · CliMA/ClimaCoupler.jl

juliasloan25 · 2026-03-11T00:14:26Z

Purpose

Now that CMIP simulations are stable for longer (!) it will be useful to have checkpointing + restarts for this setup.

extend ClimaCoupler's checkpointing/restarting interface for Oceananigans-based simulations (OceananigansSimulation and ClimaSeaIce)
add a test that runs a CMIP sim for 2 steps, saves, restarts, and runs for 2 more steps - then compare this to a sim that runs for 4 steps straight through (as we do in the existing restart_state_only.jl test)
generalize the logic in src/Checkpointer.jl to handle both the ClimaCore and Oceananigans cases cleanly
update docs

juliasloan25 · 2026-03-12T16:46:44Z

@@ -0,0 +1,32 @@
+FLOAT_TYPE: "Float32"


make this restart state + cache - should be reproducible

juliasloan25 force-pushed the js/cmip-checkpoints branch 2 times, most recently from 7bd307e to 3f7e1b7 Compare March 11, 2026 04:43

juliasloan25 requested review from jm-c and simone-silvestri March 11, 2026 04:44

juliasloan25 force-pushed the js/cmip-checkpoints branch from 3f7e1b7 to 6c0eaa0 Compare March 11, 2026 04:48

juliasloan25 commented Mar 12, 2026

View reviewed changes

juliasloan25 force-pushed the js/cmip-checkpoints branch from 0417310 to b7ec050 Compare March 18, 2026 23:58

enable checkpointing for CMIP

eb00020

juliasloan25 force-pushed the js/cmip-checkpoints branch from b7ec050 to eb00020 Compare April 8, 2026 23:19