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Going faster than memcpy

news.ycombinator.com Dheeraj R Reddy 2025-12-04 02:59:03

Going faster than memcpy While profiling Shadesmar a couple of weeks ago, I noticed that for large binary unserialized messages (>512kB) most of the execution time is spent doing copying the message (using memcpy ) between process memory to shared memory and back. I had a few hours to kill last weekend, and I tried to implement a faster way to do memory copies. Autopsy of memcpy Here’s the dumb of perf when running pub-sub for messages of sizes between 512kB and 2MB. Children Self Shared Ob

Topics: const loop size_t svec void

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Breakfast With ChatGPT: Three Workers, One Morning, A Different AI Story

gizmodo.com Luc Olinga 2025-12-03 09:15:44

I came to Cleveland, Ohio, for the 50th anniversary of the National Association of Black Journalists (NABJ) convention. I expected the hallways to be buzzing with conversations about AI, and they were, but not in the way I’d hoped. For the first two days, the phrase I heard most from my fellow journalists was “we must protect ourselves.” In session after session, the consensus was that AI is a danger, a threat, an enemy coming to replace us. Then I had breakfast at Betts, the restaurant in my h

Topics: ai chatgpt just said sargent

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AOL is finally shutting down dial-up

theverge.com Thomas Ricker 2025-12-04 05:32:48

As a septuagenarian, my father’s story was typical of long-time AOL dial-up subscribers. His subscription was a security blanket. He was sure he didn’t need the dial-up component, but he didn’t want to risk losing access to his stock portfolio, investor forums, and email. His setup worked, and he could afford to keep paying the subscription he had dutifully paid for over a decade. With my help, we were able to migrate everything he used on AOL to the ad-supported and open internet that was alre

Topics: aol component dial didn long

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Security flaws in a carmaker’s web portal let one hacker remotely unlock cars from anywhere

techcrunch.com Zack Whittaker 2025-12-03 21:00:00

A security researcher said flaws in a carmaker’s online dealership portal exposed the private information and vehicle data of its customers, and could have allowed hackers to remotely break into any of its customers’ vehicles. Eaton Zveare, who works as a security researcher at software delivery company Harness, told TechCrunch the flaw he discovered allowed the creation of an admin account that granted “unfettered access” to the unnamed carmaker’s centralized web portal. With this access, a m

Topics: access carmaker portal said zveare

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Nvidia and AMD to pay 15% of China chip sales revenues to the U.S. government, FT reports

cnbc.com Erin Doherty 2025-12-04 00:20:44

A smartphone with a displayed AMD logo is placed on a computer motherboard in this illustration taken March 6, 2023. Nvidia and Advanced Micro Devices have agreed to give the U.S. government a share of revenues from certain chips sold in China, the Financial Times reported, in an unprecedented arrangement with the White House. In exchange for 15% of revenues from the chip sales, the two chipmakers will receive export licenses to sell Nvidia's H20 and AMD's MI308 chips in China, according to th

Topics: chips financial nvidia times trump

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Intel CEO Lip-Bu Tan responds to Trump comments that he should resign

engadget.com Unknown 2025-12-01 03:30:08

Intel CEO Lip-Bu Tan has responded after Donald Trump accused him of being "highly conflicted" and said he should resign, according to The Financial Times. "There has been a lot of misinformation circulating about my past roles," Tan said in a letter to Intel staff. "I wanted to be absolutely clear... I have always operated within the highest legal and ethical standards." Tan said that Intel was engaging with the White House "to address the matters that have been raised and ensure they have the

Topics: intel letter said tan trump

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Conversations remotely detected from cell phone vibrations, researchers report

news.ycombinator.com Unknown 2025-12-03 20:14:38

UNIVERSITY PARK, Pa. — An emerging form of surveillance, “wireless-tapping,” explores the possibility of remotely deciphering conversations from the tiny vibrations produced by a cell phone’s earpiece. With the goal of protecting users’ privacy from potential bad actors, a team of computer science researchers at Penn State demonstrated that transcriptions of phone calls can be generated from radar measurements taken up to three meters, or about 10 feet, from a phone. While accuracy remains limit

Topics: phone radar said speech vibrations

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‘Weapons’ Runs to Big $70M Global Opening in Debut Weekend

gizmodo.com Justin Carter 2025-12-03 23:00:28

“Are you watching?” asks a creepy voice in the trailer for Weapons. And the answer to that question is a resounding “yes.” Per Variety, Zach Cregger’s sophomore outing earned $70 million worldwide. Domestically, its $42.5 million take was $10 million ahead of projections, and its overall take marks another win for New Line and parent company Warner Bros. Since Minecraft’s release in April, the studio has been on a money making hot streak thanks to Final Destination Bloodlines, F1: The Movie, Si

Topics: million movie new superman worldwide

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I use a duress PIN to protect my data — here’s how it works and why everyone needs one

androidauthority.com Unknown 2025-12-03 17:00:13

Calvin Wankhede / Android Authority From two-factor authentication codes to conversations and photos, our phones contain a ton of sensitive data these days. We rely on PINs and biometrics for daily security, but I shudder to think what would happen if that data landed in the wrong hands. And while Android is secure enough against remote attacks and malware these days, what if I’m forced to unlock my phone and hand it over? GrapheneOS, the privacy-focused Android fork, offers a rare solution to

Topics: android duress grapheneos phone pin

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8 forgotten Android classics I still play today

androidauthority.com Unknown 2025-12-03 18:00:03

Dhruv Bhutani / Android Authority Call me a boomer, but for me, mobile gaming peaked in the early 2010s. Phones were getting powerful enough to run console-like experiences, but the industry hadn’t yet drowned in gatcha tactics, ads after every level, or endless battle passes. Instead, developers focused on compelling single-player experiences, short but addictive gameplay loops, and just the right balance of challenge and accessibility. In those early years, some mobile games felt more like pa

Topics: android fun game games mobile

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The World Will Enter a 15-Year AI Dystopia in 2027, Former Google Exec Says

gizmodo.com Ece Yildirim 2025-12-03 22:45:58

The world is hurtling towards an inevitable AI dystopia in the very near future, according to Mo Gawdat, the former chief business officer of Alphabet’s moonshot factory, formerly known as Google X. “We will have to prepare for a world that is very unfamiliar,” Gawdat said in an interview on the “Diary of a CEO” podcast, adding that humanity’s key values like freedom, human connection, accountability, reality, and power are all facing a major disruption by AI. And this dystopia isn’t far off,

Topics: ai dystopia gawdat humanity said

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‘Spider-Man: Brand New Day’ Footage Teases a Big Spidey Stunt

gizmodo.com Justin Carter 2025-12-03 23:25:16

After showing off Tom Holland in his brand new suit for Spider-Man: Brand New Day, Sony continues its soft marketing launch with a new video showing its first day of production in Glasgow. If you’ve been on social media in the past week, you’ve probably seen some snippets of filming from the public. This behind-the-scenes vignette offers a better quality of what those people saw with their own eyes, showing not just Holland wowing the crowd with his new suit (and taking pics with similarly dres

Topics: brand day man new spider

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The 4 Best Hearing Aids for Seniors in 2025, Tested and Reviewed

wired.com Christopher Null 2025-12-03 20:00:00

Today’s hearing aids have a bevy of features ranging from Bluetooth streaming connectivity to multiple modes that allow you to adjust the device to changing surroundings. Here’s what senior users need to keep an eye out for. Style: Behind-the-ear (BTE) or in-the-ear (ITE) aids? If you don’t mind a highly visible hunk of plastic hanging from your ear all day, BTE aids will be fine. Those who don’t want to telegraph their hearing loss will find ITE models much more discreet. We even have a pair o

Topics: aids batteries don ear hearing

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Inside the automated warehouse where robots are packing your groceries

theverge.com Dominic Preston 2025-12-03 21:00:00

It’s the lack of noise you notice first. There’s no clatter of equipment, rumble of engines, or chatter of coworkers. Only the low hum of electronics. For an industrial space, this is eerily quiet, but it makes sense in a building where robots might outnumber people. I’m at a warehouse — or customer fulfilment center (CFC) — operated by online grocery company Ocado in Luton, just outside London. You might not have heard of Ocado, but it may still have delivered your groceries. Its technology ha

Topics: grid matthews ocado pack robots

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This is the Android 17 codename, and it’s not what you guessed

androidauthority.com Unknown 2025-12-02 20:00:48

Rita El Khoury / Android Authority For most of Android’s history, Google publicly referred to each release by a version number and a codename. Traditionally, the codename was a dessert like Marshmallow, Jelly Bean, or Froyo. With the release of Android 10 in 2019, however, Google ended this public practice to make its branding more globally accessible. Internally, though, the company’s developers kept the sweet tradition alive. Following that tradition, Google’s developers have recently decided

Topics: android codename dessert version year

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As an Android expert, here are 7 phones I don’t recommend buying right now

androidauthority.com Unknown 2025-12-03 21:00:55

Ryan Haines / Android Authority Here at Android Authority, we spend a lot of time talking about the best Android phones you can buy at any given time. Want a phone with great cameras? Long battery life? Something at a low price? We know exactly the right phone for you. But there’s another side to that coin: the Android phones you shouldn’t buy. Which phones are you better off skipping? As someone who’s been reviewing and writing about Android phones for a decade, that’s what I’m here to answer

Topics: 10 android phones pixel pro

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5 file management apps you should use instead of Files by Google

androidauthority.com Unknown 2025-12-03 22:00:04

Andy Walker / Android Authority Every Android smartphone needs a file explorer, and for Pixel smartphones and many others, the default option is Files by Google. This free, lightweight app offers essential file management features, and its clean design makes viewing content in folders or categories quick and easy. It’s a great way to clean up duplicate files and maintain free space on your device, but it’s not the best file management app on Android. I’ve used many file explorers on Android ov

Topics: android app file files mixplorer

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Robot Crab Meets Terrible Fate When Its True Nature Is Discovered by Real Crabs

futurism.com Unknown 2025-12-03 03:30:57

Scientists apparently underestimated the aggression of itty-bitty male fiddler crabs when they deployed a friendly robot version during mating season. In a paper published in the journal Proceedings of the Royal Society B, animal behavior researchers from the UK's University of Exeter detailed the embarrassing end to their experiment with "Wavy Dave," a 3D-printed, Bluetooth-controlled crab-bot trained to wave at its fellow crustaceans. Known for having one claw that's much larger than the oth

Topics: dave females fiddler male robot

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My Lethal Trifecta talk at the Bay Area AI Security Meetup

news.ycombinator.com Simon Willison 2025-12-03 04:47:38

In the pirate case there’s no real damage done... but the risks of real damage from prompt injection are constantly increasing as we build more powerful and sensitive systems on top of LLMs. I think this is why we still haven’t seen a successful “digital assistant for your email”, despite enormous demand for this. If we’re going to unleash LLM tools on our email, we need to be very confident that this kind of attack won’t work. My hypothetical digital assistant is called Marvin. What happens i

Topics: assistant build confident email emails

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Robot Crab Meets Terrible Fate When Its True Nature Is Discovered by Real Crab

futurism.com Unknown 2025-12-03 15:30:57

Scientists apparently underestimated the aggression of itty-bitty male fiddler crabs when they deployed a friendly robot version during mating season. In a paper published in the journal Proceedings of the Royal Society B, animal behavior researchers from the UK's University of Exeter detailed the embarrassing end to their experiment with "Wavy Dave," a 3D-printed, Bluetooth-controlled crab-bot trained to wave at its fellow crustaceans. Known for having one claw that's much larger than the oth

Topics: dave females fiddler male robot

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I can never go back to a phone without this display feature

androidauthority.com Unknown 2025-12-03 15:00:56

Tushar Mehta / Android Authority I have never been the kind to rise and shine. For the 31 years of my existence — or, at least, for the major chunk I remember vividly, waking up early in the morning has been a woeful exercise for me, unless, of course, it is for traveling or hosting people I love. Instead, I can feel the neurons in my brain firing up better in the dead of the night, and so, I have made the effort to ensure the tech in my life is best suited to make better use of those hours. T

Topics: android feature mode reading xiaomi

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The pixel that refused to die: LG Display’s 15-year OLED journey and the screen that changed everything

androidauthority.com Unknown 2025-12-03 16:57:15

Deep within LG Display’s Paju facility, in a room most employees have forgotten exists, sits a 15-inch screen that shouldn’t be working. When engineers fired it up last month for a heritage documentation project, they expected perhaps a flicker and maybe some color degradation—the inevitable decay of organic compounds exposed to fifteen years of molecular entropy. Instead, the display blazed to life with colors so vivid and blacks so profound that the measurement equipment had to be recalibrate

Topics: android display displays lg oled

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Why Wisconsin's county highways are lettered, not numbered (2019)

news.ycombinator.com Jenny Peek 2025-11-29 02:50:43

If you’ve taken a drive on one of Wisconsin’s iconic scenic roads, chances are you’ve noticed a bit of alphabet soup. Signs with names like BB, CV, N and SS flank Wisconsin’s county roads, and Shelly from Marshall wanted to know why. She asked: “Why are Wisconsin’s county roads labeled with letters instead of numbers?” Stay connected to Wisconsin news — your way Get trustworthy reporting and unique local stories from WPR delivered directly to your inbox. Email Name This field is for validatio

Topics: county highway letters said wisconsin

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Simon Willison's Lethal Trifecta Talk at the Bay Area AI Security Meetup

news.ycombinator.com Simon Willison 2025-12-03 16:47:38

In the pirate case there’s no real damage done... but the risks of real damage from prompt injection are constantly increasing as we build more powerful and sensitive systems on top of LLMs. I think this is why we still haven’t seen a successful “digital assistant for your email”, despite enormous demand for this. If we’re going to unleash LLM tools on our email, we need to be very confident that this kind of attack won’t work. My hypothetical digital assistant is called Marvin. What happens i

Topics: assistant build confident email emails

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Quickshell – building blocks for your desktop

news.ycombinator.com Unknown 2025-11-28 23:18:53

// a standard desktop window FloatingWindow { Timer { // assign an id to the object, which can be // used to reference it id : timer property bool invert : false // a custom property // change the value of invert every half second running : true ; repeat : true interval : 500 // ms onTriggered : timer . invert = ! timer . invert } // change the window's color when timer.invert changes color : timer . invert ? "purple" : "green"

Topics: change id invert timer window

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Viral Myanmar Earthquake Video Shows First Visual Evidence of Rare Seismic Phenomena

gizmodo.com Margherita Bassi 2025-12-03 16:00:14

In May, we reported on a first-of-its-kind video that captured surface rupture during Myanmar’s devastating 7.7 magnitude earthquake. While the YouTube video now has 1.6 million views, two geophysicists spotted something many people probably didn’t notice. The video seems like a gift that just keeps on giving. As the Kyoto University scientists explain in a study published last month in The Seismic Record, it also includes the first direct visual evidence of pulse-like rupturing and a curved fa

Topics: curved earthquake fault slip video

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I Ditched My Shoes for These Oka Recovery Slides and My Feet Can't Stop Thanking Me

cnet.com See Full Bio 2025-12-03 15:00:04

A few years ago I had some pain on the top right side of my right foot that wouldn't go away so I went to a podiatrist to get it checked out. He said it was nothing serious and suggested I purchase a pair of Oofos recovery slides and not only wear them instead of my shoes as much as possible but wear them inside my apartment instead of going barefoot. I like the Oofos -- and they indeed helped cure my foot problem -- but I recently tried a new pair of slides from Oka Recovery that are slightly b

Topics: foot oka oofos recovery slides

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After User Backlash, OpenAI Is Bringing Back Older ChatGPT Models

cnet.com See Full Bio 2025-12-03 16:24:00

OpenAI hoped to shrink the menu of generative AI models on its ChatGPT platform to just one with the release of its GPT-5 model this week. Not everyone was a fan. Now CEO Sam Altman says the developer is looking at giving ChatGPT Plus subscribers the option to keep using the older 4o model. Altman and other OpenAI leaders took questions on Reddit on Friday, a day after the announcement of the new GPT-5 model. A quick glance through the comments revealed how many users preferred how older model

Topics: 4o altman gpt model said

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Private Companies Are Now Gathering Weather Data for NOAA

wired.com Meg Wilcox 2025-12-03 12:00:00

This story originally appeared on Inside Climate News and is part of the Climate Desk collaboration. When staffing shortages caused the National Weather Service (NWS) to suspend weather balloon launches at its Kotzebue, Alaska, station earlier this year, a startup deploying next-generation weather balloons, WindBorne Systems, stepped up to fill the void. The company began selling its western Alaskan atmospheric data to the NWS in February, plugging what could have been a critical data gap in w

Topics: data noaa private said weather

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RFK Jr. wants a wearable on every American — that future’s not as healthy as he thinks

theverge.com Victoria Song 2025-12-03 16:00:00

is a senior reporter focusing on wearables, health tech, and more with 13 years of experience. Before coming to The Verge, she worked for Gizmodo and PC Magazine. I keep hearing the same sentence repeating in my head. “My vision is that every American is wearing a wearable within four years.” RFK Jr., our current secretary of the Department of Health and Human Services, said this at a congressional hearing at the end of June. Wearables, he said, are key to the MAHA — Make America Healthy Agai

Topics: data didn health wearable wearables

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Latest Tech News

Going faster than memcpy

Breakfast With ChatGPT: Three Workers, One Morning, A Different AI Story

AOL is finally shutting down dial-up

Security flaws in a carmaker’s web portal let one hacker remotely unlock cars from anywhere

Nvidia and AMD to pay 15% of China chip sales revenues to the U.S. government, FT reports

Intel CEO Lip-Bu Tan responds to Trump comments that he should resign

Conversations remotely detected from cell phone vibrations, researchers report

‘Weapons’ Runs to Big $70M Global Opening in Debut Weekend

I use a duress PIN to protect my data — here’s how it works and why everyone needs one

8 forgotten Android classics I still play today

The World Will Enter a 15-Year AI Dystopia in 2027, Former Google Exec Says

‘Spider-Man: Brand New Day’ Footage Teases a Big Spidey Stunt

The 4 Best Hearing Aids for Seniors in 2025, Tested and Reviewed

Inside the automated warehouse where robots are packing your groceries

This is the Android 17 codename, and it’s not what you guessed

As an Android expert, here are 7 phones I don’t recommend buying right now

5 file management apps you should use instead of Files by Google

Robot Crab Meets Terrible Fate When Its True Nature Is Discovered by Real Crabs

My Lethal Trifecta talk at the Bay Area AI Security Meetup

Robot Crab Meets Terrible Fate When Its True Nature Is Discovered by Real Crab

I can never go back to a phone without this display feature

The pixel that refused to die: LG Display’s 15-year OLED journey and the screen that changed everything

Why Wisconsin's county highways are lettered, not numbered (2019)

Simon Willison's Lethal Trifecta Talk at the Bay Area AI Security Meetup

Quickshell – building blocks for your desktop

Viral Myanmar Earthquake Video Shows First Visual Evidence of Rare Seismic Phenomena

I Ditched My Shoes for These Oka Recovery Slides and My Feet Can't Stop Thanking Me

After User Backlash, OpenAI Is Bringing Back Older ChatGPT Models

Private Companies Are Now Gathering Weather Data for NOAA

RFK Jr. wants a wearable on every American — that future’s not as healthy as he thinks

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