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Automatic Differentiation Can Be Incorrect

news.ycombinator.com Christopher Rackauckas 2025-09-25 06:01:35

ISCL Seminar Series The Numerical Analysis of Differentiable Simulation: How Automatic Differentiation of Physics Can Give Incorrect Derivatives Scientific machine learning (SciML) relies heavily on automatic differentiation (AD), the process of constructing gradients which include machine learning integrated into mechanistic models for the purpose of gradient-based optimization. While these differentiable programming approaches pitch an idea of “simply put the simulator into a loss function a

Topics: ad differentiable greater numerical sciml

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TernFS – An exabyte scale, multi-region distributed filesystem

news.ycombinator.com Unknown 2025-09-25 06:36:44

TernFS — an exabyte scale, multi-region distributed filesystem September 2025 XTX is an algorithmic trading firm: it builds statistical models that produce price forecasts for over 50,000 financial instruments worldwide. We use those forecasts to make trades. As XTX's research efforts to build better models ramped up, the demand for resources kept increasing. The firm started out with a couple of desktops and an NFS server, and 10 years later ended up with tens of thousands of high-end GPUs,

Topics: block blocks data metadata ternfs

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Luau – fast, small, safe, gradually typed scripting language derived from Lua

news.ycombinator.com Unknown 2025-09-25 05:38:49

In addition to a completely custom front end that implements parsing, linting and type checking, Luau runtime features new bytecode, interpreter and compiler that are heavily tuned for performance. Luau interpreter can be competitive with LuaJIT interpreter depending on the program. An optional component for manual Just-In-Time compilation is also available for x64 and arm64 platforms, which can considerably speed up certain programs. We continue to optimize the runtime and rewrite portions of i

Topics: interpreter luau performance runtime time

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Geizhals Preisvergleich Donates USD 10k to the Perl and Raku Foundation

news.ycombinator.com Olaf Alders 2025-09-25 06:01:45

Geizhals Preisvergleich Donates USD 10,000 to The Perl and Raku Foundation Today The Perl and Raku Foundation is thrilled to announce a donation of USD 10,000 from Geizhals Preisvergleich. This gift helps to secure the future of The Perl 5 Core Maintenance Fund. Perl has been an integral part of our product price comparison platform from the start of the company 25 years ago. Supporting the Perl 5 Core Maintenance Fund means supporting both present and future of a substantial pillar of Modern

Topics: core fund geizhals maintenance perl

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Zach Cregger’s ‘Resident Evil’ Movie Adds an Intriguing New Star

gizmodo.com James Whitbrook 2025-09-25 06:00:00

Dave Bautista and Vincent D’Onofrio want in on the DCU. Chainsaw Man the Movie: Reze Arc drops a hot new poster. Plus, go behind the scenes on the return of Netflix’s One Piece in a new featurette. Spoilers get! Resident Evil Deadline reports Paul Walter Hauser has joined the cast of Zach Cregger’s Resident Evil in a currently undisclosed role (start your Barry Burton speculation now). The DCU Dave Bautista confirmed he’s still eager to join James Gunn’s DCU in a new interview with Screen Ra

Topics: carrie know man new people

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Nvidia Appeals to Trump With a $5 Billion Intel Stake

gizmodo.com Ece Yildirim 2025-09-25 06:10:23

Nvidia became one of competitor Intel’s largest shareholders on Thursday with a $5 billion stake. The two companies will collaborate to jointly develop PC chips and data centers. Once the dominant name in chips, Intel had been in a steady decline in recent years as it failed to keep up with peers like Nvidia in the AI race. The company started its official turnaround strategy last year by ousting its previous CEO Pat Gelsinger, who was eventually replaced by Lip Bu-Tan a few months later. Las

Topics: china chips nvidia tech trump

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Can Police Take Your Home Security Videos? 3 Ways It's Legal

cnet.com See Full Bio 2025-09-25 05:00:00

Home security cameras and video doorbells provide many ways to protect privacy, from end-to-end encryption to the ability to use local video storage instead of storing on the cloud. But when the cops get involved, it's another story. Law enforcement has several options to take home security videos that you've recorded. That can include videos held in the cloud by your security company and even videos you may be keeping in a local hub that you own. It's important to know your rights, know when t

Topics: footage home police security video

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44 of the Best Movies on Netflix You Should Stream Right Now

cnet.com See Full Bio 2025-09-25 05:00:05

In the 10 years since releasing its first original film, Beasts of No Nation, Netflix has evolved into a power player in the movie scene. It's earned honors at award shows including the Oscars, Golden Globes and Emmys. The streaming giant won three Oscars in 2025, and action-thriller Rebel Ridge just nabbed an Emmy Award this week for Best TV Movie (the sentimental Vince Vaughn comedy Nonnas was nominated in the same category and is worth a watch, too). Popular films like KPop Demon Hunters, wh

Topics: best film netflix stars watch

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I Love Hallmark Movies, but This New Netflix Flick Shakes Up the Rom-Com Formula

cnet.com See Full Bio 2025-09-25 05:00:18

You could argue that the newly released Miranda Cosgrove romance movie, The Wrong Paris, which arrived on Netflix last week, could have been a Hallmark movie. As someone who covers a lot of streaming and television content, I've watched at least 100 Hallmark movies over the course of my career, and the plot of The Wrong Paris, at least on paper, is the perfect Hallmark film. In it, a broke artist named Dawn (Cosgrove) applies to a dating show, thinking it takes place in Paris, France, but to he

Topics: hallmark movie netflix paris wrong

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Luma AI's New Ray3 Video Generator Can 'Think' Before Creating

cnet.com See Full Bio 2025-09-25 05:00:19

Reasoning models are not uncommon in the world of AI. Many companies have them, including OpenAI's GPT-o3 and Google's Gemini 2.5. But AI image and video company Luma AI just dropped its first AI reasoning video model, named Ray3, and it's available now. A reasoning model is a kind of AI model that uses more computing time to process requests and can go back and check its answers. Typically, reasoning models give you better responses, whether that's more detail or a lower rate of errors. For R

Topics: ai clips models reasoning video

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The iPhone Air Is Sturdier Than It Looks. But Is It Klutz-Proof?

cnet.com See Full Bio 2025-09-25 05:27:30

Apple's thinnest ever phone, the iPhone Air, is here. I was excited to see Apple depart from its usual Plus model lineup for the iPhone 17 family, but I was more than a little nervous at the prospect of an ultrathin model. The device is only 5.6 mm thick, about the size of three stacked credit cards. But I have to ask: Did anyone really ask for a super-thin iPhone? Apple's iPhone Air engineering claims sound promising... Apple has loaded up the iPhone Air with better battery life and faster p

Topics: 17 air apple iphone phone

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How weak passwords and other failings led to catastrophic breach of Ascension

arstechnica.com Unknown 2025-09-25 06:31:22

Last week, a prominent US senator called on the Federal Trade Commission to investigate Microsoft for cybersecurity negligence over the role it played last year in health giant Ascension's ransomware breach, which caused life-threatening disruptions at 140 hospitals and put the medical records of 5.6 million patients into the hands of the attackers. Lost in the focus on Microsoft was something as, or more, urgent: never-before-revealed details that now invite scrutiny of Ascension’s own security

Topics: ascension attackers contractor microsoft wyden

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Meta’s $799 Ray-Ban Display is the company’s first big step from VR to AR

arstechnica.com Unknown 2025-09-25 06:55:45

At last year's Meta Connect, Mark Zuckerberg focused less on the company's line of Quest VR headsets and more on the "Orion" prototype see-through augmented reality glasses, which he said could launch in some form or another "in the next few years." At the Meta Connect keynote Wednesday evening, though, Zuckerberg announced that the company's Meta Ray-Ban Display AR glasses would be available starting at $799 as soon as Sept. 30. To be sure, Meta's first commercial smartglasses with a built-in

Topics: display glasses meta orion zuckerberg

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How to Trade In or Sell Your iPhone (2025)

wired.com Scott Gilbertson 2025-09-25 06:00:00

Whether you’re in the market for the super-slim new iPhone Air or planning to go big with the iPhone 17 Pro Max, don’t just toss that old phone in a drawer when you upgrade. Sell your iPhone! That old hunk of glass is more valuable than you might think. A handful of services offer cash or store credit for used iPhones. We’ve compared some popular options for trading in an old device. Most of these services accept Samsung and Google devices, and all of them take iPhones. Updated September 2025:

Topics: device gazelle iphone ll phone

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25 Amazon Prime Perks You Might Not Be Using (2025)

wired.com Louryn Strampe 2025-09-25 06:32:00

It’s common knowledge that a Prime membership gets you free two-day shipping. But there are Amazon Prime perks that make the service more worthwhile—and considering the cost of a yearly membership, you're doing yourself a disservice if you aren't taking advantage of all of them. Below, we've listed some of the perks you should be using as an Amazon Prime member. Arguably, these incentives alone aren't worth the cost of a membership, but chances are at least one of them will come in handy. Amazo

Topics: amazon day free members prime

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Political Influencers Are Ramping Up Security—and Posting Through It

wired.com Makena Kelly 2025-09-25 06:40:58

As news broke that conservative activist Charlie Kirk was shot at an event on a college campus last week, Hasan Piker’s Twitch chat was spiraling. Messages flooded onto the streamer’s channel. “Disavow quickly and vehemently for your own safety,” one chatter urged. “Pleeeeeeaaaase don’t do public debates anymore,” begged another. Piker, one of the most prominent progressive creators online, was set to face Kirk in a live debate at Dartmouth University on September 25. Now, still on air with new

Topics: creators kirk new piker security

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How chatbots — and their makers — are enabling AI psychosis

theverge.com Hayden Field 2025-09-25 06:00:00

is The Verge’s senior AI reporter. An AI beat reporter for more than five years, her work has also appeared in CNBC, MIT Technology Review, Wired UK, and other outlets. Posts from this author will be added to your daily email digest and your homepage feed. The explosive growth of AI chatbots in the past three years, since ChatGPT launched in 2022, has started to have some really noticeable, profound, and honestly disturbing effects on some users. There’s a lot to unpack there — it can be prett

Topics: ai chatgpt ll pretty suicide

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You can turn off iOS 26’s obtrusive new screenshot previews

theverge.com Andrew Liszewski 2025-09-25 06:02:44

is a senior reporter who’s been covering and reviewing the latest gadgets and tech since 2006, but has loved all things electronic since he was a kid. Posts from this author will be added to your daily email digest and your homepage feed. One of the many unpublicized changes introduced with the iOS 26 update released earlier this week is that screenshots now automatically open into a full-screen preview. The new approach provides immediate access to a handful of useful tools for editing a scre

Topics: ios previews screen screenshot screenshots

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Building the future of Open AI with Thomas Wolf at TechCrunch Disrupt 2025

techcrunch.com Techcrunch Events 2025-09-25 06:00:00

AI is moving fast — but who decides how it’s built, shared, and scaled? At TechCrunch Disrupt 2025, happening October 27-29 in San Francisco’s Moscone West, we’re diving in with Thomas Wolf, co-founder and chief science officer of Hugging Face, for a session on what it takes to make cutting-edge research and models truly open and accessible. Catch him on the AI Stage, along with thousands of other like-minded tech leaders and innovators. Why you can’t miss this session The future of AI won’t j

Topics: ai open session tech wolf

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From scrappy challenger to IPO: Chris Britt brings Chime’s playbook to TechCrunch Disrupt 2025

techcrunch.com Techcrunch Events 2025-09-25 06:30:00

TechCrunch Disrupt 2025 takes place October 27–29 at Moscone West in San Francisco, bringing together 10,000+ startup and VC leaders to shape the future of tech. Few embody what it means to build with discipline in a tough market better than Chris Britt, co-founder and CEO of Chime. What began as a scrappy fintech challenger has grown into one of the rare companies to go public in today’s challenging environment. In his session, Building a Company that Lasts, Britt will share the lessons behind

Topics: 2025 26 britt building chime

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Nvidia buys $5 billion stake in Intel, planning AI chip collaboration

techcrunch.com Ram Iyer 2025-09-25 06:31:18

Nvidia has agreed to buy a $5 billion stake in Intel as part of a broader deal to together develop “multiple generations” of data center and PC products. Nvidia will acquire the Intel stock for $23.28 per share, a slight discount on the companies previous trading price. According to Reuters, the deal would make Nvidia one of Intel’s largest shareholders, owning about 4% of the company. Intel shares were up as much as 30% in early trading on Thursday morning. The companies will integrate their

Topics: ai companies data intel nvidia

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US House committee summons CEOs of Discord, Twitch, Reddit to testify on online radicalization

techcrunch.com Dominic-Madori Davis 2025-09-25 06:45:18

The House Oversight Committee has requested that the CEOs of Discord, Twitch, Reddit, and gaming platform Steam testify on October 8th about their platforms’ alleged involvement in any online “radicalization” and the “incitement to commit politically motivated acts,” according to letters sent from the House committee to the four tech CEOs. In a statement, Rep. James Comer, chairman of the Oversight Committee, referenced the murder of Charlie Kirk and “other acts of politically motivated violenc

Topics: ceos committee discord kirk platforms

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Google and PayPal team up on agentic commerce

techcrunch.com Sarah Perez 2025-09-25 06:58:22

In Brief PayPal announced on Wednesday a new multi-year partnership with Google that will see the payments giant using Google’s AI technology to create new AI-powered shopping experiences. PayPal’s solutions, meanwhile, will be integrated across Google’s products, and PayPal will work with Google Cloud on hosting and improving its technology infrastructure. The companies did not detail what specific types of agentic shopping experiences they would work together to create, but said Google would

Topics: ai google new payments paypal

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Computing’s Top 30: Kelly Onu

computer.org Laurel Tweed 2025-09-25 10:00:50

In addition to her stellar work to ensure application and cloud security for clients across industries, Kelly Onu works to secure technology’s future by mentoring ambitious students and young professionals from all walks of life. Onu’s own experiences as a mentee helped her to sharpen her technical expertise, navigate challenges, and develop as a leader. Today, she pays those benefits forward through active involvement in organizations such as IEEE, Women in Security and Privacy, and the Inter

Topics: ai career cybersecurity onu security

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Two teenagers charged over Transport for London cyber attack

feeds.bbci.co.uk Unknown 2025-09-25 10:52:07

Two teenagers charged over Transport for London cyber attack Two teenagers have been charged as part of a National Crime Agency (NCA) investigation into a cyber attack on Transport for London. TfL suffered a major hack on 31 August last year, which investigators believe was carried out by members of the cyber-criminal group, Scattered Spider. Thalha Jubair, 19, from east London, and Owen Flowers, 18, from Walsall in the West Midlands, were arrested at their home addresses on Tuesday by the NC

Topics: attack charged cyber london transport

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New Report Finds That China's Space Program Is Rapidly Outstripping NASA

futurism.com Unknown 2025-09-25 09:05:54

While the sitting US government strips NASA of its expert leadership and funding, it seems China is more than happy to take up the mantle. A new report from the Commercial Space Federation, a lobbying group fighting for the interests of the privatized space industry, found that China's space program is experiencing a meteoric rise, and will soon pose a significant challenge to the US' dominant position in space. Posed as a "risk assessment" of the pressure Chinese competition puts on "American

Topics: china commercial nasa report space

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Tim Cook attends Windsor Castle State Banquet as part of Trump’s visit to the UK

9to5mac.com Marcus Mendes 2025-09-24 19:05:25

Apple CEO Tim Cook was among multiple high-profile guests at a state dinner at Windsor Castle on Wednesday, joining King Charles III and Donald Trump. Here are the details. Tonight’s 160+ guest list included tech and media moguls Tonight’s dinner guest list also included Nvidia CEO Jensen Huang, Citigroup CEO Jane Fraser, Arm CEO Rene Haas, OpenAI CEO Sam Altman, Blackstone CEO Steve Schwarzman, among other tech and media personalities, including Rupert Murdoch. As Bloomberg noted, Trump’s vi

Topics: announced ceo dinner tonight uk

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PSA: The Starbucks app is broken, but here’s how to use it anyway

9to5mac.com Ben Lovejoy 2025-09-25 10:09:36

A slew of people are reporting that the Starbucks app is completely broken. With too-perfect irony, the thing that is breaking it is an app satisfaction survey … Multiple users are reporting that the app forces you to complete the survey before you can use the app to do anything radical like, oh, I don’t know, ordering a cup of coffee. The problem is that even after you have completed the survey, it still doesn’t let you in: it just loops back to the survey. Twitter user Ike found a workaround

Topics: app complete order starbucks survey

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Apple TV+ unveils cryptic new crime thriller from creator of The Blacklist

9to5mac.com Ryan Christoffel 2025-09-25 10:46:15

Apple TV+ has a huge fall lineup ahead, including the return of one of its best shows next week. Over the coming weeks, Apple TV+ has several brand new crime thriller series debuting, and one of them—The Last Frontier—just got its first trailer. The Last Frontier puts dozens of violent inmates on the loose, with Jason Clarke as lone U.S. marshal If you’re a fan of crime thrillers, Apple TV+ has a lot of new offerings coming soon, including Jessica Chastain’s The Savant next week, and Down Ceme

Topics: apple frontier new series tv

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PyPI invalidates tokens stolen in GhostAction supply chain attack

bleepingcomputer.com Unknown 2025-09-25 10:09:09

The Python Software Foundation team has invalidated all PyPI tokens stolen in the GhostAction supply chain attack in early September, confirming that the threat actors didn't abuse them to publish malware. These tokens are used to publish packages on the Python Package Index (PyPI), a software repository that acts as the default source for Python's package management tools and hosts hundreds of thousands of packages. As PyPI admin Mike Fiedler explained, a GitGuardian employee reported on Sept

Topics: gitguardian github pypi python tokens

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Latest Tech News

Automatic Differentiation Can Be Incorrect

TernFS – An exabyte scale, multi-region distributed filesystem

Luau – fast, small, safe, gradually typed scripting language derived from Lua

Geizhals Preisvergleich Donates USD 10k to the Perl and Raku Foundation

Zach Cregger’s ‘Resident Evil’ Movie Adds an Intriguing New Star

Nvidia Appeals to Trump With a $5 Billion Intel Stake

Can Police Take Your Home Security Videos? 3 Ways It's Legal

44 of the Best Movies on Netflix You Should Stream Right Now

I Love Hallmark Movies, but This New Netflix Flick Shakes Up the Rom-Com Formula

Luma AI's New Ray3 Video Generator Can 'Think' Before Creating

The iPhone Air Is Sturdier Than It Looks. But Is It Klutz-Proof?

How weak passwords and other failings led to catastrophic breach of Ascension

Meta’s $799 Ray-Ban Display is the company’s first big step from VR to AR

How to Trade In or Sell Your iPhone (2025)

25 Amazon Prime Perks You Might Not Be Using (2025)

Political Influencers Are Ramping Up Security—and Posting Through It

How chatbots — and their makers — are enabling AI psychosis

You can turn off iOS 26’s obtrusive new screenshot previews

Building the future of Open AI with Thomas Wolf at TechCrunch Disrupt 2025

From scrappy challenger to IPO: Chris Britt brings Chime’s playbook to TechCrunch Disrupt 2025

Nvidia buys $5 billion stake in Intel, planning AI chip collaboration

US House committee summons CEOs of Discord, Twitch, Reddit to testify on online radicalization

Google and PayPal team up on agentic commerce

Computing’s Top 30: Kelly Onu

Two teenagers charged over Transport for London cyber attack

New Report Finds That China's Space Program Is Rapidly Outstripping NASA

Tim Cook attends Windsor Castle State Banquet as part of Trump’s visit to the UK

PSA: The Starbucks app is broken, but here’s how to use it anyway

Apple TV+ unveils cryptic new crime thriller from creator of The Blacklist

PyPI invalidates tokens stolen in GhostAction supply chain attack

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