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Hacker News - Newest: "AI"

AI can't read an investor deck AI as an attorney? Student uses ChatGPT, Gemini to sue UW Hacking MCP Servers in AI Systems – The Rug Pull: Tool Changes After Approval GitHub - MeepCastana/KubeezCut: Free Web based video editor GitHub - GenAI-Gurus/awesome-eu-ai-act: Curated tools, official sources, OSS, templates, and guides for EU AI Act compliance. Can AI judge journalism? A Thiel-backed startup says yes, even if it risks chilling whistleblowers Coming soon: 10 Things That Matter in AI Right Now DARPA built an AI to fact-check enemy weapons claims IatroBench: Pre-Registered Evidence of Iatrogenic Harm from AI Safety Measures What explains heterogeneity in AI adoption? When AI Meets Muscle: Context-Aware Electrical Stimulation Promises a New Way to Guide Human Movements - Department of Computer Science AI Changed How We Build. It Did Not Change What Matters. Linux rules on using AI-generated code - Copilot is OK, but humans must take 'full responsibility for the… Meta spins up AI version of Mark Zuckerberg to engage with employees Code Mode: Let Your AI Write Programs, Not Just Call Tools | TanStack Blog GitHub - Delavalom/graft: Go framework for building AI agents. Type-safe tools, multi-provider (OpenAI, Anthropic, Gemini, Bedrock), zero vendor SDKs. India's TCS tops estimates, says new AI models did not dent services demand Gen Z's fading AI hype Strong feeling: we are in a folded AI reality GitHub - machinarii/total-recall-catalog: A reference catalog of latest knowledge retrieval, memory & RAG systems GitHub - mensfeld/code-on-incus: Give each AI agent its own isolated machine with root, Docker, and systemd. Active defense detects and stops threats automatically.. Quantization, LoRA, and the 8% Problem: Benchmarking Local LLMs for Production AI Iran war: We spoke to the man making Lego-style AI videos that experts say are powerful propaganda Powell, Bessent discussed Anthropic's Mythos AI cyber threat with major U.S. banks GitHub - immartian/bellamem: Persistent belief-graph memory for AI agents. Retrieves decisive context by importance — not recency, not RAG, not /compact. recursive-mode: The Repo-Native Operating System for AI Engineering After the attack on Sam Altman's home, will AI CEO's go on the offensive? The biggest advance in AI since the LLM Opus 4.6 vs GPT 5.4 One Prompt Unity World Generation Test “AI polls” are fake polls Client Challenge Can AI be a 'child of God'? Inside Anthropic's meeting with Christian leaders How to Switch AI Chatbots and Why You Might Want To GitHub - MattMessinger1/agentic_refund_guardrail: Safe refund policy layer for AI agents — Python + TypeScript. Same behavior, shared tests. Adam/papers/emergent_values_whitepaper.md at master · strangeadvancedmarketing/Adam Ask HN: How do you stop playing 20 questions with your AI coding tools How far can automation and AI support psychotherapy? - @theU GitHub - stagas/rtdiff: realtime git diff gui and AI-assisted commits A Mac Studio for Local AI — 6 Months Later A History of the Early Years of AI at the University of Edinburgh Why AI Coding Tools Still Feel Stuck on Localhost MSN AI Datacenters Are Becoming Strategic Targets twitter.com Penn Researchers Use AI to Surface Unreported GLP-1 Side Effects in Reddit Posts Show HN: MoodSense AI (ML and FastAPI and Gradio, Deployed on Hugging Face) Moodsense Ai - a Hugging Face Space by aman179102 AI models are terrible at betting on soccer—especially xAI Grok GitHub - xialeistudio/echoic GitHub - HimashaHerath/github-dev-wrapped: AI-powered weekly GitHub activity reports deployed to GitHub Pages
二零二六年人工智能之能解剖 | 威恩研究所
7moritz7 · 2026-05-24 · via Hacker News - Newest: "AI"

大域(设施)

径:格 → 变电站 → 开关柜 → 不间断电源

训习巨量语言模型,数据中心乃作一统之超级计算机。当训习之序发轫,此设施必感巨量、协同步之需于电。

此程始於用電之網,載未經調治之電力,其壓極高(逾110千伏)。場中變電所降其壓,為中壓(常為11千伏至35千伏)。

至要之设,莫过于 UPS(不中断电源)。若电网波荡或倾颓,柴或煤气之发电机需数秒方启。UPS 乃恃巨量电池之阵,以弥此隙,使 AI 之群无失其力。

[图一] 终端至终端之电力架构

+------------------+     +------------------+     +------------------+     +------------------+
|   Utility Grid   | --> |    Substation    | --> |   UPS & Genset   | --> |     Room PDU     |
|   > 110 kV AC    |     |   11-35 kV AC    |     |     480 V AC     |     |     415 V AC     |
+------------------+     +------------------+     +------------------+     +------------------+
                                                                                          |
                                                                                          v
                         +------------------+     +------------------+     +------------------+
                         |   AI GPU Core    | <-- |    VRM / PoL     | <-- |   Power Shelf    |
                         | 0.7 V / 2,083 A  |     |  48 V -> 0.7 V   |     |     48 V DC      |
                         +------------------+     +------------------+     +------------------+

电压自电网降至硅基,每降一级,皆损其利、延其时、耗其资。

主角者: 施耐德(Schneider Electric)、伊顿(Eaton)、ABB诸公司,此基建之主导也。半导体企业(如英飞凌(Infineon)、沃尔夫速度(Wolfspeed)),供硅碳(SiC)之开关于UPS,增其效逾九九,杜兆瓦之热耗。

二、配电网级

路径:UPS → 楼层配电单元 → 总线 → 机架

UPS调治其电,则分之至数据中心之层。其行于楼层之配电单元(PDU)内之大变压器,变压器降其压为415V或240V之交流电。

此力循机架之廊道,由顶悬或地底之铜条,名曰总线道,以输之。盖人工智能之架,耗电远胜于传统网页托管之架(每架至120千瓦,较之传统10千瓦),故此总线道必承巨流。

旧式机械断路器,渐为固态断路器(SSCBs)所取代,此器能于微秒间断电,以防毁灭性电弧闪爆。

三、机架层级(48V枢轴)

路径:机架电源分配单元 → 功率柜

此阶段乃现代人工智能之架构转折之最。数十年来,传统服务器皆以十二伏直流为背板。然人工智能之GPU功率密度甚高,故十二伏因传输之限,数学上不可行。

为达此目的,架体现配以电力架——集中式电源单元(PSU)之总库。此架取入之交流电,化而为极稳之四十八伏直流。于斯PSU之内,氮化镓(GaN)与超结MOSFET以超乎寻常之频次切换,使电源得以紧凑之姿,而呈钛级之效能。英伟达之NVL72架构,已为超大规模液冷架百二十千瓦之圭臬。[1]固本之变,行于四十八伏直流之板。

+ + +

功率之式:P = V × I

若智能机架需用十万瓦于十二伏,则必推八千三百三十三安之电流。此致酷热铜损(I²R)。若将机架电压增为四十八伏直流,则电流降为二千零八十三安。此减功率损十六倍。

四. 理事会/芯片级

径路四十八伏直流电 → 电压调节模块 → 人工智能硅芯

终段乃天下电力工程之至艰境也。四十八伏直流电至主板,须立时降为硅逻辑所需之确电压——通常在零点六伏至零点八伏之间。

此转换由负载点(PoL)转换器与电压调节模块(VRMs)所掌之。一旗舰AI GPU(如NVIDIA之Blackwell)可耗电逾一千二百瓦。[二] 七百之电压,一芯片需千七百安之电流。

古之传电,横布硅晶,以聚VRM。然瞬变之阻,今世之构,易之以直布,VRM置于GPU之下,非侧之。半导体之司,供精巧之智电,数字之控,以调此疾电之输,精微无差。

+ 相加,复与 相加,又与

相加,此乃瞬息之挑战也

人工智能之作业,其势甚骤,如电光石火。GPU或需千七百安培之全力,不过瞬息之间。若VRM不能立应,则电压骤降,GPU遂崩。

结论

人工智能之变,与动力基础密不可分。模型之规模既增,计算之物理极限,系于吾辈能效转化电网十一万伏为硅核七伏。通此转化于宏观至微观之全价值链者,将定高性能计算之来世.

* * *

脚注

  1. NVIDIA,"GB200 NVL72 平台数据手册",二四年间。 [↑]
  2. NVIDIA,"Blackwell B200 架构白皮书",二四年间;每GPU TDP至一千二百瓦,于HGX配置中。 [↑]