Meta researchers have introduced Jagged Flash Attention, a novel technique that significantly enhances the performance and scalability of large-scale recommendation systems. By combining jagged tensors with flash attention, this innovation achieves up to 9× speedup and 22× memory reduction compared to dense attention, outperforming even dense flash attention with 3× speedup and 53% better memory efficiency.March 18, 2025 | 6 min readA write-up on the RecSys '24: Proceedings of the 18th ACM Confe...