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Nordic Unveils VPR: Its First RISC-V Processor, Ushering in a New Era of Heterogeneous Computing

2024-12-26
Nordic Unveils VPR: Its First RISC-V Processor, Ushering in a New Era of Heterogeneous Computing

Nordic Semiconductor has launched VPR, its first RISC-V processor, integrated into the new nRF54H and nRF54L SoCs. VPR, an RV32EMC processor running at up to 320MHz, is designed for software-defined peripherals. The article details VPR's architecture, initialization process, and collaboration with the Arm Cortex-M33. Zephyr's sysbuild simplifies building and deploying VPR applications, enabling heterogeneous computing for enhanced performance and functionality.

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(danielmangum.com)
Hardware Heterogeneous Computing

From Zero to Profit: The Three-Year Journey of a Photo Encryption App (Part 1)

2025-02-12
From Zero to Profit: The Three-Year Journey of a Photo Encryption App (Part 1)

This article chronicles the three-year journey of building SafeSpace, an iOS photo encryption app. From initial optimism to multiple App Store rejections, massive losses from paid advertising, and finally achieving profitability through a strategic pivot, the author details the struggles and triumphs. The narrative covers the learning curve of SwiftUI, the stringent App Store review process, and the difficulties of independent app marketing. A strategic shift in product focus and market positioning ultimately led to success, but the story doesn't end there; an Apple account investigation presents a new challenge.

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(safespace.is)
Startup

Four Surprising Limitations of Rust's Borrow Checker

2024-12-24

This article delves into four surprising limitations of Rust's borrow checker encountered even by experienced Rustaceans. The first limitation involves the borrow checker's inability to fully account for match and return statements, leading to redundant checks when working with HashMaps. The second limitation concerns asynchronous programming, where Rust currently lacks the ability to express certain asynchronous callback type signatures. The third centers around FnMut closures not allowing re-borrowing of captured variables, restricting access to mutable state in async operations. Finally, the Send checker's lack of control flow awareness results in some Futures that should be Send being incorrectly flagged as non-Send. The author illustrates these limitations and their challenges with concrete code examples and workarounds, advocating for improvements to Rust's type system to enhance developer productivity.

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(blog.polybdenum.com)
Development borrow checker async programming

Emacs Extension: An Elegant Hack

2025-09-13

This article details how the author used Emacs' powerful extension mechanism to elegantly solve the problem of automatically sorting reading lists in Org-mode. While Org-mode itself doesn't offer a direct extension point, the author cleverly leverages the `advice-add` function to insert custom code after `org-set-regexps-and-options`, achieving custom sorting. This highlights Emacs' philosophy of encouraging extensibility, offering flexible solutions even where dedicated extension points are absent. The author's approach, while arguably a bit brute-force, perfectly illustrates the power of Emacs extensibility.

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(edoput.it)
Development

Icicle: Destructive Updates via Tardis Monad and Stitching Graph

2025-03-20

Icicle, a high-level streaming query language, compiles to C using a struct-of-arrays approach. To ensure purity, the compiler initially inserts copy operations before array mutations. This post details an optimization using the Tardis Monad and a stitching graph to eliminate most of these copies, enabling destructive updates and achieving up to a 50% runtime reduction. The algorithm builds a reference graph to track array references, using forward and backward traversals with the Tardis Monad to determine safe destructive updates. This cleverly combines functional programming concepts with compile-time optimization, offering a novel approach to improving streaming query language performance.

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(icicle-lang.github.io)
Development

Antimatter Propulsion: The Future of Space Exploration?

2024-12-14
Antimatter Propulsion: The Future of Space Exploration?

A groundbreaking technology, antimatter propulsion, holds the potential to revolutionize space exploration. Antimatter annihilation offers the highest known energy density, with 100% efficiency, theoretically enabling voyages across the solar system in mere weeks or even days. However, significant challenges remain in producing, storing, and controlling antimatter, keeping the technology firmly in the theoretical realm for now. Further research and development are crucial to unlock its immense potential.

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(www.sciencedirect.com)
Tech antimatter space exploration propulsion technology

Wealth Concentration in the US: The Top 10% Control 87% of Stocks

2025-03-03
Wealth Concentration in the US: The Top 10% Control 87% of Stocks

New data reveals a staggering concentration of wealth in the US, with the top 10% owning 87% of stocks, 84% of private businesses, 44% of real estate, and two-thirds of total wealth. This concentration has been steadily increasing since 1989. Even more alarming, the top 10% now accounts for 50% of all consumer spending, up from 36% three decades ago, with their spending increasing by 12% between September 2023 and September 2024 while working- and middle-class spending declined. This extreme wealth concentration poses significant economic risks, making traditional economic indicators less reliable and highlighting the uncertainty of the future.

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(awealthofcommonsense.com)
Startup wealth inequality economic risk

Pink Floyd's 'Young Lust': A Hidden History of Telephone Technology

2025-01-02

The mysterious phone call at the end of Pink Floyd's 'Young Lust' isn't just random noise; it's a snapshot of 1979's technological transition in telephony. This article deciphers the various tones – multi-frequency (MF), single-frequency (SF) signaling, and switch interactions – revealing the shift from electromechanical to electronic digital systems. The recording, meticulously planned, captures the complexities of an international call, offering a fascinating glimpse into technological history.

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(telephoneworld.org)
Tech Telephone Technology

HP Scraps 15-Minute Phone Support Wait Time After Backlash

2025-02-21
HP Scraps 15-Minute Phone Support Wait Time After Backlash

HP abruptly reversed its controversial policy of imposing a 15-minute mandatory wait time for telephone support. The policy, implemented in several European countries, aimed to push customers towards online support channels. However, negative feedback from both customers and internal staff led to its swift cancellation. HP stated that timely access to live agents is paramount and they will prioritize quick phone support.

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(www.theregister.com)
Tech phone support

Delphi Turns 30: A Retrospective

2025-02-14

February 14th marks the 30th anniversary of the launch of the Delphi programming language. Marco Cantù reflects on attending the product launch at the Moscone Center in San Francisco 30 years ago and shares links to his blog posts and a YouTube video commemorating the event, including a piece on the 10th anniversary. The post offers a nostalgic look back at Delphi's three decades of impact on programming.

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(blog.marcocantu.com)
Development 30th anniversary

Zipshare: Effortless Android Screen Sharing for Support

2024-12-18

Zipshare offers seamless Android screen sharing, perfect for internal help desks supporting retail staff or field employees. No signup or meeting IDs are needed for the screen sharer – just instant sharing, with the option to add your own voice or video chat. Created by Miso Software, Zipshare is a simple yet powerful tool for team collaboration.

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(www.getzipshare.com)
Development screen sharing Android app remote support

Building Your Dev 'Red Team': Avoiding Embarrassing Mistakes

2025-02-06
Building Your Dev 'Red Team': Avoiding Embarrassing Mistakes

While most development teams are familiar with cybersecurity 'red teams', this article advocates for a broader 'red team' within every development team. This team should include: someone to check for design flaws (preventing embarrassing visuals like a past GitHub billboard incident); someone using ad blockers (ensuring site functionality despite ad-blockers); and someone using a password manager (to ensure smooth auto-fill for login forms). These seemingly simple roles can prevent embarrassing errors, resulting in a more polished product and better user experience.

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(zachholman.com)
Development development team red team

SQL or Death? CMU Seminar Series Explores the Future of Databases

2025-02-02
SQL or Death? CMU Seminar Series Explores the Future of Databases

Carnegie Mellon University's Database Research Group is hosting a seminar series, "SQL or Death?", exploring ways to either dramatically improve SQL's performance or replace it altogether. The online talks feature experts discussing advancements in query optimization and alternative query languages. Topics range from TypeScript stored procedures to innovative languages like PRQL and OxQL, promising a fascinating look at the future of database technology.

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(db.cs.cmu.edu)
Development query language

Immersion Cooling Could Reshape Data Center Design

2025-01-01
Immersion Cooling Could Reshape Data Center Design

Sandia National Laboratories is testing a novel cooling system that fully submerges computer servers in a non-conductive liquid coolant. This captures 100% of waste heat, resulting in a 70% reduction in energy consumption and significantly less water usage. The technology promises to revolutionize data center design, addressing the growing power and water demands of high-performance computing. Partnering with Submer Technologies, Sandia is conducting comprehensive tests, with a case study expected this fall.

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(www.sandia.gov)
Tech immersion cooling data centers high-performance computing

SATA SSD's DRM Functions and Accessibility Limitations

2025-01-20
SATA SSD's DRM Functions and Accessibility Limitations

A Linux kernel log shows warnings about an Intel SSDSCKJF360A5L SSD: "supports DRM functions and may not be fully accessible." This relates to an ATA protocol extension allowing the storage device to respond differently based on whether a request is signed by the mainboard's trusted platform module. This enables features like preventing modification of video players. Linux might have an incomplete view of the SSD, hence the warning. Additionally, the log notes the SSD's read cache is enabled but doesn't support outdated DPO or FUA techniques, which are irrelevant for SSDs.

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(unix.stackexchange.com)
Hardware

We Misjudge What the Opposite Sex Finds Attractive, Leading to Body Image Issues

2025-02-23
We Misjudge What the Opposite Sex Finds Attractive, Leading to Body Image Issues

A new study reveals that both men and women overestimate the opposite sex's preference for exaggerated gender characteristics. Participants created faces they believed the opposite sex would find attractive, revealing men overestimated women's preference for masculinity, and women overestimated men's preference for femininity. This misperception contributes to body dissatisfaction. The stronger the discrepancy between perceived self and ideal self, the greater the dissatisfaction. This suggests misjudging others' preferences not only skews our view of potential partners but also distorts self-image, potentially leading to negative behaviors like steroid use or eating disorders. Future research should explore these consequences.

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(www.bps.org.uk)
Misc body image gender

Llama.cpp Heap Overflow Exploit: A 30-Hour Journey to RCE

2025-03-26
Llama.cpp Heap Overflow Exploit: A 30-Hour Journey to RCE

This write-up details a 30-hour journey exploiting a heap overflow in Llama.cpp to achieve remote code execution (RCE). Llama.cpp's unique heap management system thwarted classic ptmalloc exploitation techniques. The author cleverly leveraged Llama.cpp's implementation logic, bypassing multiple security checks to achieve a heap overflow. Through intricate manipulations, RCE was gained. The article provides an in-depth analysis of the vulnerability details, mitigations, and the final exploitation, offering valuable insights for security researchers.

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(retr0.blog)
Development heap overflow

55-Year-Old Developer Faces 10 Years for Sabotaging Former Employer's Network

2025-03-10
55-Year-Old Developer Faces 10 Years for Sabotaging Former Employer's Network

A 55-year-old software developer faces up to 10 years in prison for deploying malicious code that crippled his former employer's network, resulting in hundreds of thousands of dollars in damages. Davis Lu, who worked at Eaton Corp. for 11 years, allegedly planted the code after a 2018 corporate restructuring reduced his responsibilities. The malicious code, including a self-activating 'kill switch' named 'IsDLEnabledinAD', caused system crashes, data loss, and globally impacted Eaton Corp. users upon Lu's termination in 2019.

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(arstechnica.com)
Development malicious code network sabotage

SQLFlow: Stream Processing with DuckDB and SQL

2025-01-03
SQLFlow: Stream Processing with DuckDB and SQL

SQLFlow is a stream processing engine powered by DuckDB, enabling SQL-based operations on real-time data from sources like Kafka and webhooks. It supports data transformations, enrichment, aggregation, tumbling window aggregations, and outputs to destinations such as Kafka, databases, or local files. SQLFlow boasts high throughput, handling tens of thousands of messages per second, and supports custom serialization and encoding. Docker deployment is readily available for easy setup.

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(github.com)
Development stream processing

Listen Notes' 2025 Tech Stack: From Single-Page App to Profitable Podcast Empire

2025-03-05
Listen Notes' 2025 Tech Stack: From Single-Page App to Profitable Podcast Empire

Listen Notes, launched in 2017 as a simple podcast search engine, has evolved into a mature product with a massive database and three user interfaces by 2025. This post details its tech stack, encompassing backend (Python, Django, uwsgi, Nginx), frontend (React, Tailwind), databases (Postgres, Elasticsearch, Redis, ClickHouse), and cloud services (AWS, Google Cloud, Cloudflare). It also shares operational insights, including finance, legal, HR, and marketing, offering valuable lessons for small software companies.

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(www.listennotes.fm)
Startup podcast

The Pope's Latinist: Reginald Foster's Extraordinary Life

2025-03-24
The Pope's Latinist: Reginald Foster's Extraordinary Life

Reginald Foster, an extraordinary American priest, served as the Pope's Latin secretary at the Vatican for forty years. More than just a master of Latin, his unique teaching methods cultivated thousands of Latin enthusiasts and profoundly impacted the Church's Latin legacy. This article recounts his legendary life, from being plucked from his order by a powerful cardinal to his unconventional teaching style that fused Latin learning with Roman history and culture. Foster's legacy lives on through the numerous scholars and teachers he trained, breathing new life into the ancient language.

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(newcriterion.com)
Misc Latin Vatican

Solving Complex Probability Problems with Model Counting

2025-02-14

This article presents a method for solving complex probability problems using propositional model counters. The author demonstrates, through a simple example, how to translate complex probabilistic relationships into Boolean logic formulas and use a model counter to compute the probability of the final event. This method can handle scenarios with complex causal chains and conditional probabilities, and has important applications in areas such as nuclear power plant safety assessment and quantitative trading. The article also provides an open-source tool, ganak, for performing model counting calculations.

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(www.msoos.org)
AI probability calculation model counting causal inference

SVG: Scalable Vector Graphics for Web Design

2025-03-09
SVG: Scalable Vector Graphics for Web Design

This article answers common questions about SVG (Scalable Vector Graphics), covering its definition, image conversion methods, advantages over other formats like PNG and JPEG, sources for free resources, HTML usage, animation techniques, responsive design implementation, optimization, and editing tools. Web designers and developers alike will find practical information on using SVG.

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(websvg.com)
Design

Advocating for RSS: One Person's Campaign for Better News Feeds

2025-01-18
Advocating for RSS: One Person's Campaign for Better News Feeds

ReedyBear, a blogger, has been actively advocating for more websites to support RSS feeds. Frustrated by the lack of RSS support on many sites he follows, he's personally contacted government organizations, news outlets, and game companies, successfully persuading some to add RSS. The post encourages readers to join the movement, highlighting the benefits of RSS for a cleaner, more controlled news experience, free from ads and algorithmic biases.

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(reedybear.bearblog.dev)
Misc information access user advocacy

GitHub Action Compromise: tj-actions/changed-files Injecting Malicious Code

2025-03-15
GitHub Action Compromise: tj-actions/changed-files Injecting Malicious Code

A critical security incident has compromised the tj-actions/changed-files GitHub Action, impacting over 23,000 repositories. Attackers retroactively modified multiple version tags to point to a malicious commit, exposing CI/CD secrets in public build logs. StepSecurity Harden-Runner detected this anomaly. The compromised Action executes a malicious Python script that dumps secrets from the Runner Worker process. Immediate action is required: stop using the affected Action and review build logs for leaked secrets.

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(www.stepsecurity.io)
Development Malicious Code

MTR: A Powerful Network Diagnostic Tool

2025-02-05

MTR combines the functionality of 'traceroute' and 'ping' into a single, powerful network diagnostic tool. It traces the path of a network connection and tests the quality of the link to each hop. Simply specify a destination host, and MTR displays the address and connection quality statistics for each hop, aiding in quick network problem identification. MTR is open-source, cross-platform compatible, though some older binary distributions and online services are defunct. Source code is available on GitHub for compilation, or it can be directly used via distributions like Debian.

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(www.bitwizard.nl)
Development network diagnostics
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