The blog post details a reverse-engineering effort of Flash Attention 4 (FA4), a new CUDA kernel optimized for Nvidia's architecture, achieving a ~20% speedup over previous versions. It explores the kernel's architecture and asynchronous operations, making it accessible for software engineers without CUDA experience, while providing insights into its tile-based computation processes and optimizations for generative AI tasks.
flash-attention ✓
+ cuda
gpu ✓
neural-networks ✓
optimization ✓