July 23, 2026 FVAttn: Adaptive Sparse Attention with Runtime Load Balancing for Video Generation 面向视频 DiT 推理的训练无关稀疏注意力系统,通过运行时负载均衡(RLB)和松弛感知稀疏增强(SASA)解决 Top-p 路由在多 GPU 序列并行下的负载不均衡问题 video-generation sparse-attention system-optimization sequence-parallelism