Fleuret: teacher forcing turns time iteration into depth iteration, and GPUs love it

francoisfleuret · x · 2026-10-24

François Fleuret highlights an elegant property of transformers: thanks to teacher forcing, iterating a medium-size state over time is transformed into iterating a gigantic state over depth — which GPUs are happy about.

Related event: Fleuret: Teacher Forcing Trades Temporal Iteration for Depth in Transformers(2 posts)→

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