KV Cache

A technical survey of autoregressive video generation: why causality enables streaming and KV-cache reuse, how few-step distillation makes it practical, and how recent systems generate longer videos while reducing training cost.

Why KV cache compression methods that work on paper fail in production — FlashAttention hides attention scores, and repeated token eviction frees no paged GPU memory — and how a geometric property hidden beneath RoPE resolves both.