Mesh LLM: distributed AI computing on iroh

https://www.iroh.computer/blog/mesh-llm/header.png
Mesh LLM enables distributed GPU pooling for OpenAI-compatible APIs, offering control, cost efficiency, and peer-to-peer networking via iroh, avoiding centralized cloud lock-in. It splits models across devices, supports private/public deployment, and uses decentralized QUIC connections for seamless, scalable inference.

We Know Simple Fluids Can Flow. Turns Out, Some Can Fracture

https://www.quantamagazine.org/wp-content/uploads/2026/07/ThamiresLima-coThamiresLima.webp
Thamires Lima discovered a nonelastic fluid can fracture like brittle solids, defying theories that elasticity causes fluid cracking. This challenges assumptions about stress-induced fluid failure, with potential impacts on engineering, medicine, and material science.

A pure scheme web programming tool

The Scheme compiler is self-hosted, using unboxed fixnums, GC structs, and hygiene via renaming, with fast variadic calls and Wasm-based continuations. It integrates web APIs (HTML, WebGL, JS FFI) and reactive systems, enabling RPC with exact s-expression data and efficient rendering.

Show HN: Ant – A JavaScript runtime and ecosystem

https://themackabu.dev/assets/hell-B7vKAGz4.webp
Ant uses Hono for isolated module initialization without an HTTP server, enabling 40x faster package installation and secure execution via VM sandbox. It leverages ants.land registry with npm protocol support, offering ESM compatibility and cross-manager package management.

RISCBoy is an open-source portable games console, designed from scratch

https://raw.githubusercontent.com/Wren6991/RISCBoy/master/doc/diagrams/system_arch.png
A Gameboy Advance-inspired RISC-V processor in Verilog for iCE40-HX8k FPGA, supporting RV32IMC and compliance tests. Requires RISC-V toolchain setup, simulation with ISIM, and PCBs for prototyping.

I Did Not Kill Stanley Lieber: How to Draw (With 9front)

https://img.triapul.cz/brdzor.png
This document explains how to draw on 9front using various input devices like mice, tablets, and touchscreens, focusing on the paint(1) program for digital art creation. It covers techniques for image manipulation, file conversion to formats like PNG, and methods for sharing artwork via external drives or network connections.

A dock that wakes up reliably

https://fabiensanglard.net/tb4/tb4_vs_others.webp
User struggled with unreliable laptop wake-up from sleep via Thunderbolt docks, even with Thunderbolt 4. Switching to an ASUS ROG Swift monitor in 2025 resolved the issue, though the cause remains unclear.

The Energetic Costs of Cellular Computation (2012)

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Cells often perform computations in response to environmental cues. A simple example is the classic problem, first considered by Berg and Purcell, of determining the concentration of a chemical ligand in the surrounding media. On general theoretical grounds (Landuer's Principle), it is expected that such computations require cells to consume energy. Here, we explicitly calculate the ...

Nvidia, CoreWeave, and Nebius: Inside the Circular Financing of the GPU Boom

https://bethtechnology.cdn.prismic.io/bethtechnology/e0a8f1ff-95b9-432c-a819-369b491ce051_Logo_Final_Transparent_IOFUND.svg?w=3840
Neoclouds like CoreWeave and Nebius grow via hyperscaler demand for AI infrastructure, leveraging Nvidia GPUs and optimizing compute utilization. However, rapid expansion relies on high debt and circular financing with Nvidia, risking sustainability amid cash flow gaps and macroeconomic pressures.

A Erlang style pure Scheme Webserver and further

Igropyr is a Chez Scheme HTTP server using libuv, featuring fault-tolerant worker pools, hot code swapping, green processes for concurrency, and structured error handling. It ensures zero-downtime updates, preemptive scheduling, and OTP-inspired supervision for high reliability.

Billions of Sketches Reveal Hidden Cultural Variation in Human Concepts

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
Analyzing 2.6B sketches from 236 countries reveals greater cross-cultural conceptual variation than linguistic methods, especially for haptic concepts. Visual representations show 45% stronger alignment with cultural distances than text, suggesting modality shapes perceived universality.

What xAI's Grok Build CLI Actually Sends to xAI

We scaled PgBouncer to 4x throughput

https://clickhouse.com/_next/image?url=%2Fuploads%2Fpgbouncer_jul2026_image5_331a55a410.png&w=2048&q=75
Using multiple PgBouncer processes with SO_REUSEPORT and peering leverages all CPU cores, achieving 4x throughput vs. a single process. This setup avoids pooler bottlenecks, maximizing resource use under high concurrency.

UPI: Anatomy of a Payment Transaction

UPI payments involve apps, sponsor banks, and NPCI's central switch, with money debited before crediting, ensuring reliability despite hidden complexity. Over 2,272 crore transactions in June 2026 highlight its scale, with failures mostly due to user errors, not system flaws.

Show HN: Quantum-Qec / Matrix-Free Quantum Homeostatic Engine(Blueprint)

https://opengraph.githubassets.com/c358f81226fc52a9a631eec302a112f2b6fb6b9f00fa3767ca25eb5cc25cd7ec/PJHkorea/quantum-mesh-qec
Quantum-Mesh-QEC v2: Decentralized Fault-Tolerant Quantum Control via Autonomous Surface Code Remapping & Zero-Copy Hardware-Fused Binders A production-grade, deterministically bounded-jitter, fault-tolerant infrastructure engineered for real-time Quantum Error Correction (QEC) and autonomous topological stabilization in multi-sector superconducting qubit grids. It leverages a 3-Tier ...

Jellyfish Undersea Roundabout

The early History of the Singular Value Decomposition (1993) [pdf]

Prefer strict tables in SQLite

SQLite's strict tables enforce rigid typing to prevent data type errors, require valid column definitions, and allow 'ANY' for flexibility. Introduced in 3.37.0, they improve data integrity but require upfront setup and may conflict with older versions or flexible use cases.

Long Covid May Physically Damage the Nerves That Control the Stomach

A study on Long-COVID-19 patients found reduced gastric mucosal cholinergic nerve density and impaired autonomic function via HRV analysis, linking vagal dysfunction to persistent symptoms and systemic inflammation. Histological and physiological data suggest structural autonomic damage, correlating with elevated cardiovascular biomarkers and procoagulative states.

Biff.graph: structure your Clojure codebase as a queryable graph

https://opengraph.githubassets.com/2b1823e7d4112dbdf919be6aa226011f5ef69c243d9b0318e35428f3d09a8181/jacobobryant/biff
Biff.graph is a lightweight, Pathom-inspired library for querying databases and derived data as a unified graph using resolvers. It simplifies code structure with small, testable resolvers and supports EQL/Datomic patterns, though it lacks Pathom's query optimization.

Doctors die. It's not like the rest of us, but it should be (2016)

https://archive.cancerworld.net/wp-content/uploads/2016/04/CoverFocus71-678x381.jpg
Doctors often reject aggressive end-of-life treatments for themselves, prioritizing comfort and dignity, yet they frequently administer such care to others due to patient/family pressure, systemic incentives, and fear of litigation, highlighting a stark contrast between medical practice and personal choice.

Optimization Solver as a Service

https://quicopt.com/og-image.png
Quicopt solves LP, QP, MILP, and QUBO models via Python (OR-Tools/Pyomo) with a free tier requiring no API key. It auto-sets up keys, returns detailed results, and retains submitted data for solver improvement.

Show HN: Learn by rebuilding Redis, Git, a database from scratch

https://shipthatcode.com/opengraph-image?e5981ff808b13a14
Pick a system. Build it from scratch. Every lesson is choose → write → run, until it clicks. Each card opens a structured Fundamentals → Intermediate → Advanced track. Tap the > chevron to reveal all 37 languages. “You can’t cheat — you either solve the problem or you don’t. It’s the first platform where I actually understand what I’m writing.”

Martha Lillard, last US polio patient using iron lung, dies at 78 in Oklahoma

https://i.abcnewsfe.com/a/8835e7b2-65e3-4a45-b2f3-4acfec9712ea/wirestory_41e5b4da4f4e710344dd0872d7fcf987_16x9.jpg?w=992
Martha Lillard, the last U.S. polio patient using an iron lung, died at 78 in Oklahoma from long-haul COVID-19 and pulmonary issues. She lived independently, pursued education, and connected globally via internet before her 2026 death.

Show HN: Sqlsure – deterministic semantic checks for AI-generated SQL

https://opengraph.githubassets.com/36cea76d2cff0d78b3cac9f4cd1a217228d5dea2bb54e3f45e2c3e7635690f66/sqlsure/sqlsure
sqlsure detects silent SQL errors like double-counting or schema defects using dbt tests and schema introspection, offering deterministic, actionable fixes without new languages or models. It integrates with text-to-SQL tools, enforces semantic rules via existing metadata, and audits queries against declared facts for reliable validation.

Sixtyfour (YC P25) Is Hiring

https://bookface-images.s3.us-west-2.amazonaws.com/logos/1bb597f3c523ffa144378db8ab6100c529167c91.png?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAQC4NIECAKZOSNZWI%2F20260711%2Fus-west-2%2Fs3%2Faws4_request&X-Amz-Date=20260711T171204Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAYaCXVzLXdlc3QtMiJIMEYCIQDhvuyX7mlRS2rlb1kQgBvX4P07ZNF2eBgUMsSj%2FQcc3AIhAMiiXQdpmkiztVUDt%2BY0n2Qch7R5Mre6era08P46QBvHKu4DCM%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQABoMMDA2MjAxODExMDcyIgxqptTDfxKUnSqPeaEqwgOp62dZh8IcKJJ9XhR6l874iQVs5LoXy8ryg8ZH9rPDr%2FwwG6mkbFpVONYtFEoyM4Y2HmQqTSGdvZfRhv3J0D1QhG4aKDV5SRK39UauvE4jRpVY0pT5%2FZEz1YGD3M0azjrYi0bXVpvN9DWIYUhZzzYlUcKR8BmPeD9aF6l0bTMApDKnP30EkYEIGrSjtYC8xv0NrexkZ3JKWFGJ6aphF3itTx%2B%2F8zV%2BJNvGicdINIJjUAqPHYnVaTlQqrinWv%2FQox4AsMUKVtfmGB8Bijf4wwH%2FrT4iVt%2BMfbB6Bg397izpBhIKb4AWrXQF%2FsdLsNVbujlfoNlUozBXMU9Z5I7nCxnkH8pIGMqvqhToLOuMk2FXODpID7W8E%2B5xO%2FiVBZMzUtIT7LPEvdtIxD7BlLaSWjdCS7XZjJVGjsf02xsmcmAZMyCMa5lq6ejdzPdLsjLNJ2GQ1QU6l%2Bgmpm6gdiP8%2Bka2nXotZfJHe2tY0ok4U3dU8wzucnuuNFEFlJKwCdhLf7F7pyq40aseoUlXLvLDNzXx89L834eSEs7CGNLFpplpvdboSXkzM46UKvYGXIZPUnuMQOH9Cc6E%2BSNJ6NbTacmO8Jwww5vJ0gY6pAF87gAPS%2BoaW6VJSSXXm9QnuGLnaeTRuS0Y3Mv5JtCclY5FeUAw%2FuGOgNhg5bP6Dot487J9bzUMxEA1S%2BAz%2B46jLYgiOfCZU04cSbNaJ%2F4bOkOB0%2FFBN2RQ9S4oAyTEeuImj%2F3Q2SZFC%2FZcVvnkKfdwnZEuE5OuCbrk4eSSdOVLHGjp1rwFv7QcVVXf2mOyhjnD8OqZcdaFrELpQu3FsYtJ3kPuQw%3D%3D&X-Amz-SignedHeaders=host&X-Amz-Signature=651cc6450cff9880e5ae067876e14d65786398d37f8d9c780b404805fbf541cf
SixtyFour's role involves creating accurate data samples, providing proactive support, and managing customer requests to drive success for recruitment, data labeling, and growth teams. Candidates must collaborate with sales/engineering, handle 7-10+ requests, and undergo a multi-stage hiring process including an SF onsite interview.

How to Achieve Pruning When Querying by Non-Partitioned Columns in PostgreSQL

https://hakibenita.com/images/00-postgresql-partition-pruning.png
One of the most valuable things about partitioned tables is pruning - the database's ability to eliminate entire partitions based on a query predicate. Under conventional wisdom, pruning can only be achieved when querying by the partition key - this makes choosing the right key extremely difficult. However, if your data follows certain patterns, using some clever tricks you can achieve ...

ZeroFS vs. Amazon S3 Files

https://www.zerofs.net/assets/og-card.jpg
Amazon S3 Files maintains a direct one-to-one mapping between mounted files and S3 objects, enabling standard S3 ecosystem integration, while ZeroFS optimizes storage with compressed, encrypted segments and an LSM tree, prioritizing performance and privacy over direct S3 visibility. S3 Files suits use cases requiring immediate S3 compatibility, whereas ZeroFS trades S3 accessibility for ...

Show HN: Orbit – AR satellite tracker, watch 15k+ objects

Orbit uses your device's camera and sensors for real-time AR sky tracking without storing/transmitting data. It collects anonymous diagnostics for improvements and includes an optional Google-powered chatbot, with no personal info required or tracked.

Female US rower completes historic solo journey from California to Hawaii

https://i.guim.co.uk/img/media/76e6d41e9793d20f38e9c89b53fa8b8b1ba200bd/0_0_2626_2102/master/2626.jpg?width=465&dpr=1&s=none&crop=none
Kelsey Pfendler became the first US woman, youngest, and fastest to solo row 2,400 miles from California to Hawaii in under 44 days, breaking both women's and men's records. She documented her journey, highlighting challenges and inspiring others to pursue their "big, hard, scary" goals.