ynamic tile grouping, 2) Temporally varying windows that adjust sparsity
levels based on frame proximity, and 3) An automated configuration search
algorithm that optimizes sparse patterns while preserving critical attention
pathways. Our method achieves 1.6~2.5x acceleration in attention computation on
single-GPU setups while maintaining comparable visual quality with
full-attention baselines. This work provides a principled approach to unlocking
efficient long-form video generation through structured spars