E228|谷歌TPU能撼动英伟达吗?前TPU工程师首次揭秘
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在AI算力争霸时代,英伟达凭借GPU市值一路狂飙。但如今,它的蛋糕正在被一点点分食——2024年,苹果论文披露Apple Intelligence全部由TPU训练;2025年,Anthropic签下数十亿美元订单,购买TPU训练Claude;近期,Meta与谷歌签署数十亿美元协议,租用TPU跑Llama。 TPU一直是谷歌低调的“自家武器”,在过去十年里驱动着几乎全部核心产品。直到TPU训练的Gemini 3打了一场漂亮的翻身仗,人们才开始重新审视:这套从搜索推荐系统中长出来的定制芯片,究竟藏着多少秘密? 本期播客,我们邀请到前谷歌TPU工程师Henry。他在2018年至2024年间深度参与了三代TPU的研发,也见证了大模型时代TPU的关键转型。他将从硬件架构、软件生态、生产供应链三个维度,一层层揭开TPU的神秘面纱。 我们将深入探讨:TPU与GPU的架构有何根本不同?TPU的产能瓶颈卡在哪里?当谷歌开始向Anthropic、Meta开放TPU,它在软件生态上要迈过哪些坎?如果未来模型的底层范式发生改变,TPU还能押准方向吗?而最关键的问题是:TPU真的有机会撼动英伟达的霸主地位吗? 【主播】 泓君,硅谷101创始人,播客主理人 【嘉宾】 Henry Zhu,前Google TPU工程师,参与V6/V7/V8 TPU研发 【你将听到】 TPU挑战GPU 03:06 架构对决:GPU像多个大厨,TPU像流水线接力 06:41 TPU vs GPU:谁在模型训练上更强? 10:20 TPU产能之困:HBM、封装与良率 XLA软件黑盒 14:06 Anthropic为何率先下单百万部署? 16:01 黑盒优化如何“榨干”硬件性能 17:47 XLA与CUDA,两种生态之争 19:53 苹果为什么能成为TPU大客户? “大模型客户” 20:45 Gemini成功背后,TPU做了什么? 22:34 TPU是如何做MoE优化的? 23:45 设计难点:如何押中两三年后的算法? 26:05 TPU的转身:V6开始押注大模型预训练 28:53 Transformer先发优势带来的旗鼓相当能持续多久? 32:04 Meta的TPU托管服务:生态逐渐走向兼容 供应链命门 36:10 拓扑通信架构如何为TPU打赢数据中心成本战 38:27 博通(Broadcom)是谁?为什么它如此关键 42:04 挑战GPU的机会:用户规模越大推理越快 45:36 V7(Ironwood)之后:Gemini实现100%TPU训练 48:15 一句话总结TPU优劣势 TPU十年进化史 49:49 V1推理芯片试水,V2训练芯片旗舰,V4优化推荐算法 52:16 V5/V6:进入大模型时代,推出推理专用版本 56:05 团队演变:软件组话语权越来越重 新星Groq 57:14 踩准每一次红利的编译器公司 59:27 差异化定位:做小规模部署的低延迟优化 01:01:59 AI算力芯片新战局 【监制】 泓君 【剪辑】 小师 Jacob 【运营】 朱婕 【BGM】 Virtuoso Violin - Rafael Krux Angular Pulse - Guy Copeland Top Flow - This Violin 本期节目中嘉宾所表达观点均为其个人看法。 本期节目不构成任何投资建议,投资有风险,入市需谨慎。
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