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Implement Flash Attention Back End in SGLang – Basics and KV Cache
A blog about my thoughts on ML Sys and LLMs
The benchmark results demonstrate that FA3 consistently delivers the highest throughput across all tested scenarios, outperforming both FlashInfer and Triton, especially as the input or output size increases. This approach eliminates repeated CPU launch overhead and enables the GPU to execute the operations more efficiently, resulting in significant time savings. My approach was to follow a specific area closely (e.g: Quantization), monitor relevant PRs and issues, and offer assistance with smaller tasks by reaching out to PR authors through comments or Slack.
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