SemiAnalysis· @SemiAnalysis_ · X·· 2026-05-30精选AI 评分76
AI 导读
突发新闻：JAX NVIDIA GPU & XLA：GPU最大客户刚刚宣布已放弃JAX GPU，宁愿用Grok Build“氛围编程”一个C训练框架。据报道xAI的JAX堆栈MFU低于10%。NVIDIA JAX团队过去两年全部主力996专注于支持xAI却失败了，我想他们现在可以休息并兑现期权了。
推荐理由
xAI 这个 GPU 最大客户突然甩了 JAX，要自研 C 训练框架，理由是 JAX 利用率太低。如果连万亿参数集群都搞不定，JAX 的底层缺陷可能比想象的大，做大规模训练的团队得认真评估了。
正文 · 原文
BREAKING NEWS: JAX NVIDIA GPU & XLA: GPU's biggest customer just announced that they have dropped JAX GPUs and would rather vibe code an C training framework with Grok Build. Reportedly xAI's JAX stack had MFU lower than 10%. NVIDIA JAX team entire main 996 focus for the past 2 years was to support xAI yet has failed, I guess they can rest & vest now.
来源：SemiAnalysis · x.com