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Continuous Checkpointing in Orbax and MaxText: Halves Checkpoint Gaps, Saves Hours on TPU Failures
On a dual-slice v5p-128 TPU cluster training Llama 3.1 70B, continuous checkpointing slashed P50 intervals from 100 steps to under 50—without tanking goodput. Here's why this async trick rewrites large-scale LLM training.