https://answer.freetools.me/tags/sequence-packing/ Recent content in Sequence Packing on Answer Hugo -- 0.152.2 zh-cn Thu, 12 Mar 2026 22:55:24 +0800 https://answer.freetools.me/%E5%8F%98%E9%95%BF%E5%BA%8F%E5%88%97%E5%A4%84%E7%90%86%E5%A4%A7%E6%A8%A1%E5%9E%8B%E5%A6%82%E4%BD%95%E5%BA%94%E5%AF%B9%E9%95%BF%E7%9F%AD%E4%B8%8D%E4%B8%80%E7%9A%84%E8%BE%93%E5%85%A5/ Thu, 12 Mar 2026 22:55:24 +0800 https://answer.freetools.me/%E5%8F%98%E9%95%BF%E5%BA%8F%E5%88%97%E5%A4%84%E7%90%86%E5%A4%A7%E6%A8%A1%E5%9E%8B%E5%A6%82%E4%BD%95%E5%BA%94%E5%AF%B9%E9%95%BF%E7%9F%AD%E4%B8%8D%E4%B8%80%E7%9A%84%E8%BE%93%E5%85%A5/ 深入解析大语言模型处理变长序列的核心技术：从padding策略的选择困境到attention mask的工作原理，从sequence packing的训练优化到Flash Attention的varlen实现，揭示这项看似简单的预处理如何深刻影响模型训练和推理的效率。