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Make Your QEMU 10 Times Faster: A Weird Trick

2024-12-17

While debugging NixOS tests, Linus Heckemann discovered painfully slow data copying times (over 2 hours) in a QEMU virtual machine. Performance analysis with `perf` revealed that QEMU's 9p server used an inefficient linked list (O(n) complexity) for file lookups. By switching to a hash table provided by glib (O(1) complexity), he reduced the test time to 7 minutes and successfully contributed the optimization to the QEMU project.

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(linus.schreibt.jetzt)
Development 9p protocol

Shanghai's Dual Faces: A Tale of Two Sides of the Huangpu River

2024-12-17

This article recounts the author's observations of Shanghai's architecture, focusing on the contrast between Puxi and Pudong. Starting with a 2005 visit, the author describes being captivated by Pudong's rapidly rising skyscrapers. Today, Pudong boasts the Oriental Pearl Tower, Jin Mao Tower, Shanghai World Financial Center, and Shanghai Tower, forming a stark contrast to the historical European-style buildings of Puxi. The author argues these structures are not just feats of engineering, but also symbols of China's economic development and cultural transformation, reflecting Shanghai's unique duality: a blend of historical heritage and modern dynamism.

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(arun.is)
Design Shanghai architecture Pudong development urban development

Waymo's First International Road Trip: Tokyo Bound

2024-12-17

Waymo is bringing its autonomous vehicles to Tokyo in early 2025, partnering with Nihon Kotsu and GO. This marks Waymo's first international expansion, challenging its self-driving system with left-hand traffic and Tokyo's dense urban environment. The company will collaborate with local partners and officials to understand the local landscape and ensure safe implementation. This aligns with Japan's vision for future transportation, and Waymo will work closely with regulators to meet safety standards. Initially, Nihon Kotsu drivers will manually operate the vehicles to map key areas of Tokyo.

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(waymo.com)
AI autonomous driving international expansion

The Red Beads Experiment: Systems, Not People, Are the Problem

2024-12-17

Dr. W. Edwards Deming's 'Red Beads Experiment' vividly illustrates the impact of systems on individual performance. Employees pick beads from a mix containing mostly red beads, with performance measured by the number of red beads. Results show that despite employee effort, system flaws (high proportion of red beads) lead to huge performance differences, with management wrongly blaming individuals. The experiment highlights the importance of systemic issues, emphasizing management's focus on system improvement, not individual assessment, for true efficiency gains.

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(medium.com)
Misc Deming Red Beads Experiment Systems Thinking

Nostalgic Game 'Alley Cat' Remake Released

2024-12-17

Programmer Joflof has finally completed a remake of the classic 1983 game 'Alley Cat' after many years of work. This remake not only retains the original pixel graphics and sound effects but also adds five new levels and multiplayer modes for up to four kittens to play simultaneously. Additionally, Joflof has included special arcade mode configuration options for arcade enthusiasts. Currently, the game is only available for Windows, but the author hopes that enthusiasts will help port it to Linux and Mac systems.

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(www.joflof.com)
Game retro game remake arcade game

Meta to Pay $50 Million to Australian Users Affected by Cambridge Analytica

2024-12-17

The Office of the Australian Information Commissioner (OAIC) has reached a settlement with Meta, resulting in a $50 million payment program for Australian Facebook users affected by the Cambridge Analytica scandal. The case involved the unauthorized disclosure of personal information to the 'This is Your Digital Life' app, posing risks of political profiling. The payment scheme offers a base payment for users experiencing general concern or embarrassment and higher payments for those demonstrating specific loss or damage. Applications are expected to open in the second quarter of 2025.

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(www.oaic.gov.au)
Tech data breach

A New Twist: Molecular Machines Loop and Twist Chromosomes

2024-12-17

Scientists have discovered a new function of the molecular motors that shape our chromosomes: SMC proteins not only form long loops in DNA but also significantly twist the DNA during loop formation. Published in Science Advances, the research reveals that SMC proteins introduce a left-handed twist of 0.6 turns in each DNA loop extrusion step. This twisting action is conserved across species, observed in both human and yeast cells, highlighting its evolutionary importance. This finding enhances our understanding of chromosome structure and function and provides insights into developmental diseases like cohesinopathies.

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(phys.org)
Biology molecular motors chromosomes

TSMC Employees' Surprisingly High Fertility Rate: One in Fifty Taiwanese Babies is a 'TSMC Baby'

2024-12-17

The surprisingly high fertility rate among employees of Taiwan Semiconductor Manufacturing Company (TSMC), the world's leading semiconductor manufacturer, has drawn significant attention. While TSMC employees constitute only 0.3% of Taiwan's population, they account for 1.8% of all babies born in Taiwan—meaning one in every fifty Taiwanese babies is a 'TSMC baby'. This phenomenon is attributed to TSMC's family-friendly policies, including childcare services from 7 am to 8 pm, flexible work arrangements, and generous maternity leave. The company's culture, fostering positive peer interactions and encouraging parenthood, also plays a vital role, creating a positive feedback loop that boosts birth rates.

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(www.boomcampaign.org)
Misc fertility rate family-friendly policies

Revolutionary Technique Cuts LLM Memory Costs by Up to 75%

2024-12-17

Sakana AI, a Tokyo-based startup, has developed a groundbreaking technique called "universal transformer memory" that significantly improves the memory efficiency of large language models (LLMs). Using neural attention memory modules (NAMMs), the technique acts like a smart editor, discarding redundant information while retaining crucial details. This results in up to a 75% reduction in memory costs and improved performance across various models and tasks, offering substantial benefits for enterprises utilizing LLMs.

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(venturebeat.com)
AI Memory Optimization Neural Networks

A Million-Dollar Surprise: De Gaulle's Hidden Collection Found

2024-12-17

A forgotten trove of Charles de Gaulle's personal letters, speeches, and manuscripts has been discovered in a safe, set to be auctioned for over $1 million. The collection, found in a bank vault belonging to his son, includes the handwritten manuscript of his famous 1940 speech calling for French resistance against the Nazis, correspondence with Winston Churchill, early short stories, and personal notebooks offering insights into his intellectual development. This unexpected discovery unveils a fascinating glimpse into the life and thoughts of the iconic French leader, with a portion of the proceeds benefiting the Anne de Gaulle Foundation.

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(www.smithsonianmag.com)
Misc Charles de Gaulle Auction Historical Documents

Advent of Code on the Nintendo DS: A Rust Programming Challenge on an Embedded System

2024-12-16

The author tackled Advent of Code 2024 using Rust on a Nintendo DS. This detailed account chronicles the journey, from setting up a cross-compilation environment and writing Rust code for a runtime-less embedded system to overcoming challenges in memory management, interrupts, and screen output. The author successfully displays the Advent of Code solution on the DS screen. The article showcases strong programming skills and deep understanding of embedded systems, highlighting the techniques and enjoyment of programming in resource-constrained environments.

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(sailor.li)
Development Nintendo DS

U2 Drummer Larry Mullen Jr. Reveals Dyscalculia Diagnosis

2024-12-16

U2 drummer Larry Mullen Jr. has publicly revealed for the first time that he has dyscalculia, a learning disability that affects mathematical abilities. He shared that he struggles with basic counting and addition, describing the act of counting musical bars as 'like climbing Everest.' This candid admission offers insight into learning disabilities and showcases the musician's remarkable achievements despite facing significant challenges.

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(www.thetimes.com)
Misc Dyscalculia Learning Disability

Always Attend the Funeral: A Father's Lesson in Human Kindness

2024-12-16

The author recounts how her father instilled in her the importance of always attending funerals, a lesson she initially resisted. Through years and personal experience, she realizes it's not just about obligation, but about offering comfort and acknowledging life's inevitable losses. Her father's death solidified this belief, highlighting the profound impact of seemingly small acts of kindness in the face of grief, emphasizing the importance of showing up for others even when inconvenient.

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(www.npr.org)
Misc life lessons family human kindness

CIA's Secret Robot Dragonfly Spy from the Cold War

2024-12-16

In the 1970s, the CIA secretly developed a miniature robotic dragonfly, dubbed the "insectothopter," for espionage. The device used laser reflectors as microphones, analyzing laser beam vibrations to capture sound. While successful in lab tests, its inability to cope with real-world wind conditions led to the project's termination. Nevertheless, this ambitious endeavor laid the groundwork for modern micro-drone technology and highlighted the intense technological competition of the Cold War.

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(www.popularmechanics.com)
Tech robot dragonfly Cold War espionage

McDonald's: A Microcosm of American Life

2024-12-16

Author Chris Arnade offers a unique perspective on American society by observing McDonald's restaurants across the US. From Trump's political stunt at a McDonald's to its role as a refuge for the mentally ill and a de facto community center, Arnade argues that McDonald's transcends its fast-food identity, reflecting the connections between people and the yearning for belonging in American society. He highlights the elite's tendency to overlook the value of these grassroots communities, emphasizing that these organically formed social hubs are a testament to the resilience of American society.

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(www.thefp.com)
Misc American Society McDonald's Community

Principles of Educational Programming Language Design: Why the Lack of Consensus?

2024-12-16

This paper explores the evolution of principles in educational programming language design over several decades. While the work of Wirth and others emphasized principles like simplicity and modularity, disagreement persists among educators regarding suitable languages for novice programmers. The article analyzes how the interpretation of these principles shifts in the context of current technologies and why a common, globally used educational programming language hasn't emerged. The authors discuss the relative merits of pedagogical versus industry languages and argue that each generation of learners needs its own language.

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(infedu.vu.lt)
Development programming education language design educational technology

The Green Fairy's Fall: Absinthe From Muse to Moral Panic

2024-12-16

In late 19th-century France, absinthe, once celebrated as the 'Green Fairy' and muse to artists and poets, fell from grace due to its high alcohol content and societal biases. Medical experts linked absinthe to violent crime, fueling the 'absinthe-induced violence' narrative. Sensationalized media reports, such as those detailing 'absinthe murders,' furthered the negative perception. While it's now understood that absinthe's dangers stem primarily from its alcohol content, not its essential oils, the ensuing panic led to its prohibition in Switzerland (1908) and France (1915). The widening consumption of absinthe, from the bourgeoisie to the working class, fueled its association with crime. The absinthe ban also reveals complex attitudes toward alcohol and societal prejudices. Although absinthe is now legal in some countries, its negative reputation persists.

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(www.historytoday.com)
Misc absinthe prohibition social history

OpenAI Outage: Unexpected Load from New Telemetry Service Causes Major Disruption

2024-12-16

OpenAI experienced a major service disruption on December 11th, stemming from a newly deployed telemetry service. Intended to improve reliability, this service unexpectedly generated massive Kubernetes API server load, saturating the servers and causing the Kubernetes control plane to fail in most large clusters. This led to the breakdown of DNS-based service discovery. The incident highlights the unpredictable interactions within complex systems and the challenges of testing for failure modes that only appear under full load. OpenAI restored service by scaling down clusters, blocking network access to Kubernetes admin APIs, and scaling up API servers.

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(surfingcomplexity.blog)
Development API server saturation service disruption

Go Protobuf's New Opaque API Improves Performance and Safety

2024-12-16

The Go team released a new Opaque API for Go Protobuf, coexisting with the existing Open Struct API. This new API decouples generated code from its underlying memory representation, leading to performance improvements, reduced memory allocations, and enabling optimizations like lazy decoding. By hiding struct fields and accessing them only through accessor methods, it prevents pointer-related bugs and accidental sharing. Migration involves enabling the Hybrid API, using the `open2opaque` tool, and then switching to the Opaque API. The existing Open Struct API remains supported.

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(go.dev)
Development

Backward-Incompatible GRUB2 Change Causes BIOS Boot Loop

2024-12-16

The author's Debian and Kali Linux systems experienced boot loops after a GRUB2 update added the command `fwsetup --is-supported`. Older GRUB versions didn't recognize this parameter. The issue stemmed from an older `efifwsetup.mod` module, leftover from a system backup restoration, causing a conflict between the new GRUB configuration and the old module. Installing the `grub-efi-amd64-bin` package resolved the problem. This highlights the importance of backward compatibility in software updates and the need to consider potential side effects when making partial changes in complex software like GRUB2.

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(op-co.de)
Development boot loop

Unraveling the Mango's Mystery: A Scientific Journey Across Asia

2024-12-16

The sweet mango, a beloved fruit worldwide, hides a mysterious past. Dr. Emily Warschefsky, a Ph.D. student at Florida International University, embarked on a scientific journey across Asia to uncover the mango's origins. Visiting botanical gardens and forests, she collected numerous samples of Mangifera species and used DNA sequencing to study relationships between different mango species. Her research revealed genetic differences between Southeast Asian and Indian mangoes, challenging the traditional view of a single Himalayan origin. Several scenarios are proposed, including multiple domestication events and hybridization between different species. Warschefsky's work not only deepens our understanding of mango origins but also offers new insights for mango breeding and cultivation.

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(fairchildgarden.org)
Misc mango origin DNA sequencing

Ruby Conference Roundup: A Global Overview

2024-12-16

Ruby Video Talks is a website that aggregates information on Ruby developer conferences worldwide. From major events like RubyConf 2024 (70 talks) and Rails World 2024 (46 talks) to smaller regional meetups, the site provides a comprehensive calendar. It highlights key speakers like Matz and offers search functionality by date, location, and topic, making it easy to find relevant events. Upcoming conferences in 2025, such as Balkan Ruby and Friendly.rb, are also listed, promising even more opportunities for the Ruby community.

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(www.rubyvideo.dev)
Development Ruby Conferences Developer Events Programming Language

nCompass: Revolutionizing AI Inference Cost

2024-12-16

nCompass Technologies has developed innovative AI inference serving software that reduces the cost of serving AI models at scale by up to 50%. By utilizing custom AI inference software and a hardware-aware request scheduler with Kubernetes autoscaling, nCompass maintains high-quality service on fewer GPUs, resulting in up to a 4x improvement in response time and significantly reduced GPU infrastructure costs. Users access open-source models via API with no rate limits and receive a $100 signup credit. On-premises solutions are also available for businesses demanding cost-effectiveness and responsiveness.

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(www.ncompass.tech)
AI AI inference cost optimization

M87 Supermassive Black Hole Emits Astonishing Gamma-Ray Flare

2024-12-16

In 2019, the Event Horizon Telescope captured the first-ever image of a supermassive black hole at the center of galaxy M87. Now, an international team, including researchers from UCLA, has observed a teraelectronvolt gamma-ray flare from this black hole, tens of millions of times larger than its event horizon. This rare, decade-defining flare provides crucial insights into particle acceleration near black holes and could help solve the mystery of cosmic ray origins. UCLA played a significant role in the construction and data analysis of the VERITAS telescope, instrumental in detecting this event.

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(newsroom.ucla.edu)
2 black hole gamma-ray flare cosmic rays

LLM Benchmark: Pelican on a Bicycle

2024-12-16

Simon Willison created a unique LLM benchmark: generating an SVG image of a pelican riding a bicycle. This unusual prompt aimed to test the models' creative abilities without relying on pre-existing training data. He tested 16 models from OpenAI, Anthropic, Google Gemini, and Meta (Llama on Cerebras), revealing significant variations in the quality of generated SVGs. Some models produced surprisingly good results, while others struggled.

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(simonwillison.net)
AI Image Generation

Muscle Atrophy as We Climb the Kardashev Scale

2024-12-16

As humanity ascends the Kardashev Scale, a paradox emerges: increased energy access correlates with decreased physical labor. The author outlines three biomechanical stages: pre-industrial, where physical exertion was essential; industrial-modern, where machines reduced manual labor; and post-biological, where humans might remotely control robots via brain-computer interfaces, rendering physical bodies obsolete. This raises questions about the future of humanity's physical form and the complex relationship between technological advancement and human evolution.

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(solmaz.io)
Misc Kardashev Scale Biomechanics Future of Humanity

Guile-powered Emacs: A Bold Rewrite Project

2024-12-16

Emacs, renowned for its extensibility, faces performance and expressiveness limitations with its core language, Emacs Lisp (Elisp). To address this, the Guile-Emacs project aims to replace Elisp in Emacs with Guile Lisp. After years of development and dormancy, Guile-Emacs has been revived by developers Robin Templeton and Larry Valkama. The project aims to leverage Guile's compiler and performance advantages to improve Emacs' speed and extensibility while maintaining Elisp compatibility. The ultimate goal is to rewrite a significant portion of Emacs's C code in Lisp, significantly enhancing its customizability. While facing technical and political challenges, the project presents exciting possibilities for the future of Emacs.

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(lwn.net)
Development

AI Unlocks the Paint Chemistry of Berlin Wall Murals

2024-12-16

Italian scientists used a neural network to analyze spectral data from handheld Raman spectroscopy devices, revealing the paint chemistry secrets of Berlin Wall murals. This research not only sheds light on the materials and techniques used in these historically significant artworks but also provides new technological approaches for preserving street art. By analyzing paint chips from wall fragments and combining Raman spectroscopy, X-ray fluorescence spectroscopy, and optical fiber reflectance spectroscopy, along with a custom-built AI algorithm called SAPNet, researchers precisely identified the pigment composition, including titanium white and up to 75 percent other pigments. This breakthrough demonstrates the significant potential of AI in cultural heritage preservation.

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(arstechnica.com)
AI Cultural Heritage Preservation Raman Spectroscopy
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