EVERYTHING AIAI engineering, made visual
Visual edition planned
Phase 19 · Lesson 47BuildPython1.5 h85 lessons in phase

Checkpoint Save and Resume

Train interrupts kill runs; checkpoints let them continue. Save model, optimizer, scheduler, loss history, step counter, and RNG state, atomically, so a kill at any moment leaves a valid file on disk.

Visual edition planned

This lesson isn’t interactive yet.

It is part of the curriculum and will get the same treatment as Phase 1 — a visual cover, hands-on labs, derivations with numeric checks and a quiz. Until then, the original lesson is the best place to read it:

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