7.30.26 | Open-source engine running Gemma 4 26B on Mac, KOReader, Superlogical

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Today, we dive into running Gemma 26B model on Macs, supporting E Ink document formats across devices, and building a unified multiplexer for all work. Let's get going.
Title, Show HN, Open Source Engine Running, Gemma 4 26B in 2GB RAM on any M-series Mac, Source Github, the post introduced Turbo Field Fair, an engine that allows a 26 billion parameter version of Gemma to run on Macs with only 2GB of RAM. It uses a custom Swift and Metal runtime that streams expert weights from SSD rather than loading the entire model into memory, making it possible to run on Macs with limited memory. The system includes a Mac app CLI and a loopback server for instruction-based chat and generation, with benchmarks showing it can generate around 5 tokens per second on an M2 MacBook Air. Users are encouraged to try the setup by downloading and installing the model, which is streamed in chunks from the web and validated locally. In the comments, the community mostly supported the project, praising its innovative approach to running large models with minimal RAM. Discussion focused on performance differences based on hardware, with comparisons between M2 and M5 chips, and debates about SSD caching and the impact of system memory on inference speed. Some users suggested that loading entire models would be faster if enough RAM was available. Others discussed how techniques like expert caching and SSD streaming could be combined to improve performance in constrained environments. Overall, community members expressed excitement about the potential for low memory inference, though some noted hardware limitations and the challenge of balancing speed and practicality.
Title, KOReader is a document viewer for E Ink devices supporting multiple file formats. Source, KOReader.rocks. The post described KOReader as a reader app for E Ink devices like Kindle, Kobo, Pocketbook, Android and Linux. It supports formats such as EPUB, PDF, DJVue, Mobi and more offering features like custom fonts, dictionaries and better PDF rendering. Discussions focused on how users jailbreak their devices to install KOReader, the software's versatility and its benefits over default readers, especially in terms of customization and support for various formats. Users shared their setups and plug-ins, emphasizing the improved reading experience, although some noted a steep learning curve and UI quirks. In the comments, the community overwhelmingly supported KOReader, praising its customization, file format support and technical features. They debated its user interface with some finding it unintuitive but manageable after setup and others criticizing it for complexity and battery drain. Many users shared success stories about jailbreaking devices to install KOReader and some discussed alternative readers or ways to improve UX via plugins. The dominant sentiment was mostly positive with the community valuing KOReader as a flexible, powerful tool that significantly enhances the e-reading experience on various devices.
Title, SuperLogical, Source, superlogical.com. The article announced the development of a new system called a multiplexer, designed to unify various work environments like local machines, remote hosts, sandboxes, services, and production systems. The goal is to build a single, durable session layer that can span applications and environments, provide context, expose structured data, and support both human and software control. The initial focus is on a modern terminal multiplexer that allows reconnecting to long-lived sessions via web or native apps, addressing common issues with existing tools like scrollback, selection, and native scrolling. The team behind it includes experienced developers from HashiCorp and other major software firms, and they plan to make the system safe and operable in production. In the comments, the community mostly supported the idea but debated its purpose and design. Many compared it to existing tools like TMUX, Zilege, and Herder, questioning what new benefits it offers beyond these.
Several expressed enthusiasm for the project, especially given Mitchell Hashimoto's track record, but some raised concerns about the ambitious scope, licensing, and potential for overlap with current infrastructure solutions like Kubernetes. Discussions also touched on whether this could be the next step in IDE development, the importance of open source, and worries about the influence of investors, notably Tobias Lütke, on the project's direction. Overall, the community was optimistic but skeptical about how much this system would improve or replace existing options.
Title, The Coolest Use for the Vision Pro. Source, Christian Selig. The article describes how the author used the Vision Pro to create a virtual walkthrough of his future house, aiding in design decisions and spatial understanding. He created a basic 3D model of the floor plan in Fusion 360, added textures and furniture from IKEA, and 3D warehouse to get scale, and then built a custom viewer called Prospector to explore the virtual space in real time with controller support, terrain following, and other features. The author emphasized how immersive VR makes planning and visualizing architectural changes much easier, predicting that future design workflows will incorporate more of these tools. In the comments, the community mostly supported the potential of the Vision Pro for architecture and remodeling, with many sharing their own experiences using VR for design, planning, and visualization. There was a strong consensus that VR has long had this capability, but Apple's device brings a higher quality experience. Critics debated the cost and comfort issues, with some dismissing the Vision Pro as too bulky and expensive, and others highlighting the potential for more affordable alternatives like Quest headsets or even mobile AR. A recurring theme was concern about the actual market adoption and whether the hardware's high price and current limitations would hinder mainstream use. Overall, the sentiment leaned towards optimism about VR's role in architecture and tempered by skepticism about the device's consumer viability.