NVIDIA正式发布Nemotron 3系列模型，这是目前最高效的开源模型家族，专为代理AI应用设计。该系列包含Nano、Super和Ultra三个模型，分别在成本效率、协作代理和高精度推理方面表现优异。Nemotron 3采用创新技术，包括混合Mamba-Transformer MoE架构、潜在专家设计、多令牌预测等，支持长达100万token的上下文长度。Nano模型在保持高准确度的同时，推理效率达到同类模型的3.3倍。NVIDIA已开源Nano模型的权重、训练配方及相关数据，为AI社区提供重要资源。这一发布标志着NVIDIA在高效AI模型领域的重要突破，将对AI应用开发和部署产生深远影响。
原文链接：Hacker News
This article delves into the most misunderstood feature of the Odin programming language—the context system. The author clarifies that the true purpose of the context system isn't to reduce parameter passing or implement dynamic scoping, but rather to intercept and modify the behavior of third-party code. The article details the core components of the context system, including allocators, assertion handlers, loggers, and random number generators, and explains the design decision to use implicit pointer passing instead of thread-local variables. Through practical examples, the author demonstrates how to leverage the context system to overcome API limitations and issues with unmodifiable third-party libraries. For systems programmers and programming language designers, this article offers valuable insights into solving real-world development challenges at the language level.
Original Link:Hacker News
Inspired by a V2EX post, a developer spent an entire night building getcheapai.com, an AI gateway price comparison website, for only 73 yuan. During development, the author leveraged AI tools to boost efficiency: primarily using Claude Code + Sonnet 4.5 for coding, designing the interface with v0.dev, and perfectly implementing the UI effects with Opus 4.5. This tool addresses the pain point of AI users searching for cost-effective gateways, helping them save money by comparing prices across different platforms. The article shares detailed insights into the development process, technology choices, and cost breakdown, offering practical guidance for developers looking to rapidly build products using AI tools. This case demonstrates how AI tools can be used to develop other AI tools, showcasing the immense potential of current AI technology in real-world applications.
Original Link:V2EX Share & Discover
This article details how researchers broke through the hardware limitations of the RK3588 neural network processor through reverse engineering to successfully run vision Transformer models. As an AI chip widely used in edge computing devices, the built-in NPU of the RK3588 originally had limited support for complex AI models. By deeply analyzing the chip architecture and optimizing algorithms, researchers successfully overcame these limitations, enabling vision Transformers to run efficiently on resource-constrained embedded devices. This breakthrough is significant for advancing AI model applications on edge devices, especially in scenarios requiring real-time processing such as autonomous driving and intelligent surveillance. The article not only showcases the technical details of hardware reverse engineering but also provides practical optimization strategies, offering valuable reference for AI chip developers, embedded systems engineers, and AI application researchers.
Original Link:Hacker News
47-year-old MIT Nuclear Science and Engineering professor Nuno F Gomes Loureiro of Portuguese nationality was shot at his Massachusetts home and tragically passed away in the hospital on Tuesday. Police responded to reports of gunfire at the scene, and no arrests have been made as the incident is being investigated as a homicide. Loureiro was an expert in magnetized plasma dynamics, researching fusion energy to combat climate change. He joined MIT in 2016 and became director of the Plasma Science and Fusion Center in 2024. A graduate of Instituto Superior Técnico in Lisbon with a PhD in Physics from Imperial College London, he was renowned for solving complex problems in fusion vacuum chambers. An MIT spokesperson expressed deep condolences, and the community is providing psychological support. His research is considered at the forefront of clean energy, leaving a profound impact on the scientific community.
Original Link:Hacker News
This research, published in Nature Communications, explores a hybrid robot design inspired by the aerodynamics of tumbleweeds. By analyzing the rolling characteristics of tumbleweeds in harsh environments like deserts, researchers have developed a novel hybrid robot that combines the advantages of both wheeled and legged locomotion systems. This robot can move efficiently across complex terrain, including soft sand, rocky areas, and other environments where traditional robots struggle. This innovation demonstrates the potential of biomimicry in robot design, offering new approaches for applications in extreme environments such as Mars surface exploration and post-disaster rescue operations. The research team validated the robot's performance through wind tunnel experiments and field tests, with its adaptive rolling and stable mobility capabilities opening new pathways for future robot applications in harsh environments.
Source:Hacker News
Chat-tails is a retro terminal chat tool built on Tailscale technology, created by developer Brian Scott to provide a secure gaming chat space for his children. The project features a minimalist IRC-like interface, enabling chat functionality through the terminal. All messages are temporarily stored and cannot be searched, lacking modern chat app features like voice, plugins, or images. Chat-tails offers two operation modes: regular mode requires port forwarding on the local network; Tailscale mode connects to the Tailscale network via an auth key, allowing any device on the network to access the chat room using telnet or nc commands. Developed in Go, the project combines the tsnet networking library and bubbletea terminal UI library, easily running on single-board computers like Raspberry Pi. Chat-tails not only provides users with a secure, private chat environment but also serves as an educational tool for learning fundamental technologies like VPN, SSH, and terminal operations, showcasing the perfect fusion of retro technology and modern networking.
Original Link:Hacker News
最新评论
照片令人惊艳。万分感谢 温暖。
氛围绝佳。由衷感谢 感受。 你的博客让人一口气读完。敬意 真诚。
实用的 杂志! 越来越好!
又到年底了，真快！
研究你的文章, 我体会到美好的心情。
感谢激励。由衷感谢
好久没见过, 如此温暖又有信息量的博客。敬意。
很稀有, 这么鲜明的文字。谢谢。