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Memory-Level Parallelism: Apple M2 vs. Apple M4

news.ycombinator.com View All Posts Daniel Lemire 2026-01-30 20:24:28

The Apple M2, introduced in 2022, and the Apple M4, launched in 2024, are both ARM-based system-on-chip (SoC) designs featuring unified memory architecture. That is, they use the same memory for both graphics (GPU) and main computations (CPU). The M2 processor relies on LPDDR5 memory whereas the M4 relies on LPDDR5X which should provide slightly more bandwidth. The exact bandwidth you get from an Apple system depends on your configuration. But I am interested in single-core random access perfor

Topics: apple channels forth memory processors

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Prime Day Is the Prime Time to Add a SanDisk Memory Card to Your Camera or Laptop for Peanuts

gizmodo.com Mike Fazioli 2026-02-01 00:50:02

It’s not here quite yet but the day may come when SanDisk enters that rarified category of brands that are synonymous with their entire product category, like Kleenex or Band-Aids or Popsicles. When you think of a SD card to add to your camera, laptop, or other device, you think of SanDisk, and Prime Day is a great time to think of adding a SanDisk or two to your tech collection now that the 256GB Extreme PRO SDXC UHS-II model is just $53. SanDisk did not come by its stellar reputation lightly.

Topics: extreme memory pro sandisk video

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6 Amazon Prime Day Mattress and Bedding Deals on Our Favorite Gear (2025)

wired.com Julia Forbes 2026-02-02 06:25:09

As you may have noticed, mattress shopping holidays aren't limited to just Memorial Day, Labor Day, or even the Fourth of July anymore. Now that Amazon Prime Day is nearly a week long, it's become something of a holiday in and of itself, so it makes sense that Amazon would start offering mattresses too. We've listed our favorite deals that someone on our staff has tested themselves and personally vouches for. If you want to know more about our favorite mattresses, we have you covered there too.

Topics: amazon day mattress memory wired

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RFK Jr. barred registered Democrats from being vaccine advisors, lawsuit says

arstechnica.com Unknown 2026-02-02 15:53:55

After US health secretary and hardline anti-vaccine activist Robert F. Kennedy Jr. fired all 17 highly respected vaccine experts from the federal Advisory Committee on Immunization Practices (ACIP) last month, he vetted their replacements not by medical and scientific expertise, but by their political leanings, according to a lawsuit filed by medical organizations Monday. Under Kennedy, to qualify to be on the Centers for Disease Control and Prevention's nationally influential and historically

Topics: acip kennedy members new vaccine

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Chinese researchers unveil MemOS, the first ‘memory operating system’ that gives AI human-like recall

venturebeat.com Michael Nuñez 2026-02-02 21:57:16

Want smarter insights in your inbox? Sign up for our weekly newsletters to get only what matters to enterprise AI, data, and security leaders. Subscribe Now A team of researchers from leading institutions including Shanghai Jiao Tong University and Zhejiang University has developed what they’re calling the first “memory operating system” for artificial intelligence, addressing a fundamental limitation that has hindered AI systems from achieving human-like persistent memory and learning. The sy

Topics: ai memory memos researchers systems

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Memstop: Use LD_PRELOAD to delay process execution when low on memory

news.ycombinator.com Unknown 2026-01-30 20:32:16

Memstop A lightweight LD_PRELOAD shared object that delays process execution when system memory is critically low. Memstop monitors available memory and waits until a configurable percentage of memory becomes available before allowing the application to start. Purpose Memstop is designed to prevent crashes caused by memory exhaustion in parallel processing systems. It can be particularly useful in: Parallel build systems (like make -j ) where you want to prevent the build from failing due to

Topics: available ld_preload make memory memstop

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WebAssembly: Yes, but for What?

news.ycombinator.com Unknown 2026-02-04 05:34:43

June 30, 2025 Volume 23, issue 3 PDF WebAssembly: Yes, but for What? The keys to a successful Wasm deployment Andy Wingo WebAssembly (Wasm) turns 10 this year, which, in software terms, just about brings it to the age of majority. It has been polished, prepared, explored, and deployed, but in the language of American speculative fiction author William Gibson, we are now as ever in the unevenly distributed future: WebAssembly has found a niche but not yet filled its habitable space. This ar

Topics: memory use wasm web webassembly

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Public exploits released for Citrix Bleed 2 NetScaler flaw, patch now

bleepingcomputer.com Unknown 2026-02-04 17:57:37

Researchers have released proof-of-concept (PoC) exploits for a critical Citrix NetScaler vulnerability, tracked as CVE-2025-5777 and dubbed CitrixBleed2, warning that the flaw is easily exploitable and can successfully steal user session tokens. The CitrixBleed 2 vulnerability, which affects Citrix NetScaler ADC and Gateway devices, allows attackers to retrieve memory contents simply by sending malformed POST requests during login attempts. This critical flaw is named CitrixBleed2 as it close

Topics: citrix exploited flaw memory netscaler

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Walmart Plus membership is 50% off, and has something Amazon doesn't: the Nintendo Switch 2

zdnet.com Kayla Solino 2026-02-05 06:38:00

With Prime Day kicking off, consumers are flocking to Amazon for all the best deals. But one of the best things about Prime Day is all the other major retailers looking to cash in on the shopping palooza, offering similar (or better) deals on top products -- and even membership opportunities. Also: The best Prime Day deals live now Right now, Walmart is discounting its Walmart+ membership program by 50% ahead of its Walmart Deals event, starting on July 7 for Walmart+ members. To sweeten the d

Topics: best deal deals membership walmart

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Public exploits released for CitrixBleed 2 NetScaler flaw, patch now

bleepingcomputer.com Unknown 2026-02-05 11:57:37

Researchers have released proof-of-concept (PoC) exploits for a critical Citrix NetScaler vulnerability, tracked as CVE-2025-5777 and dubbed CitrixBleed2, warning that the flaw is easily exploitable and can successfully steal user session tokens. The CitrixBleed 2 vulnerability, which affects Citrix NetScaler ADC and Gateway devices, allows attackers to retrieve memory contents simply by sending malformed POST requests during login attempts. This flaw is named CitrixBleed2 as it closely resemb

Topics: citrix exploited flaw memory netscaler

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This 1-Year Sam’s Club Membership (Auto-Renew) Drops to Nearly Free, a Cheap Alternative If Costco Is Too Far

gizmodo.com Jason Coles 2026-02-05 16:25:08

Life is pretty darn expensive. In fact, it’s getting pricier by the day at the moment, at least for a lot of us, and that means that it’s really important to find ways to not only save money on luxuries that help keep us all sane, but also on daily essentials. That can be a lot harder to do though, but there are some really easy ways to get those savings going, and one of those is with a good warehouse membership. See at StackSocial Sam’s Club is a membership-only retailer that stocks a huge n

Topics: good just membership money save

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These are the best new MacBook deals this July: options starting at $649

9to5mac.com Michael Burkhardt 2026-02-07 18:33:35

In the Apple Silicon era, MacBooks have become more affordable than ever – with brand new models starting as low as $649. With looming tariffs on China, these great deals could potentially be coming to an end soon – so if you’re in the market for a new MacBook for any reason, now may be one of the best ever times to purchase. Apple’s upcoming macOS 26 update is also rumored to drop support for some additional Intel Macs, so if you’d like to stay on the latest and greatest Apple software, nows a

Topics: air m4 macbook memory storage

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Here are 33 of our favorite deals from Amazon’s early Prime Day sale

theverge.com Brandt Ranj 2026-02-07 17:22:35

Amazon’s next Prime Day event hasn’t officially kicked off yet, but as usual, the retailer has already dropped a selection of early deals ahead of the four-day shopping event. While steeper discounts are surely to arrive when things kick off on July 8th, many of the current offers are already worth considering, especially if you’re a Prime member looking to score a deal on one of Amazon’s own devices or services. Most of these offers are exclusive to Prime members; however, some retailers are pr

Topics: amazon day event members prime

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How the Binding of Two Brain Molecules Creates Memories That Last a Lifetime

wired.com Ajdina Halilovic 2026-02-07 11:00:00

The original version of this story appeared in Quanta Magazine. When Todd Sacktor was about to turn 3, his 4-year-old sister died of leukemia. “An empty bedroom next to mine. A swing set with two seats instead of one,” he said, recalling the lingering traces of her presence in the house. “There was this missing person—never spoken of—for which I had only one memory.” That memory, faint but enduring, was set in the downstairs den of their home. A young Sacktor asked his sister to read him a book

Topics: memories memory molecular molecules sacktor

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ADXL345 (2024)

news.ycombinator.com Unknown 2026-02-07 02:40:30

The ADXL345 is a MEMS accelerometer made by Analog Devices. It’s a popular device among hobbyists because of its low cost, easy availability and rich feature set. But apparently you should be careful about where you buy them: one of my readers ended up with a bunch of ADXL345s that had significant offsets, measurement axes that didn’t work at all, and an inoperative freefall detection mode. After spending lots of time trying to get them to work, he decided to send them to me instead and hopefull

Topics: chip layer mems readout right

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ADXL345 Die Analysis

news.ycombinator.com Unknown 2026-02-07 14:40:30

The ADXL345 is a MEMS accelerometer made by Analog Devices. It’s a popular device among hobbyists because of its low cost, easy availability and rich feature set. But apparently you should be careful about where you buy them: one of my readers ended up with a bunch of ADXL345s that had significant offsets, measurement axes that didn’t work at all, and an inoperative freefall detection mode. After spending lots of time trying to get them to work, he decided to send them to me instead and hopefull

Topics: chip layer mems readout right

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VLLM: Easy, Fast, and Cheap LLM Serving with PagedAttention

news.ycombinator.com Woosuk Kwon 2026-02-05 11:16:20

GitHub | Documentation | Paper LLMs promise to fundamentally change how we use AI across all industries. However, actually serving these models is challenging and can be surprisingly slow even on expensive hardware. Today we are excited to introduce vLLM, an open-source library for fast LLM inference and serving. vLLM utilizes PagedAttention, our new attention algorithm that effectively manages attention keys and values. vLLM equipped with PagedAttention redefines the new state of the art in LL

Topics: llm memory pagedattention throughput vllm

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You can still get a Walmart Plus membership for 50% off and snag exclusive access to Walmart's anti-Prime Day sale

zdnet.com Kayla Solino 2026-02-09 02:16:32

The summer sale season is here. Plus, with Prime Day (and concurrent sales) kicking off next week, there's no better time to scour the internet for deals, discounts, and top savings at every retailer as they compete for your cash. Also: The best Prime Day deals live now Perhaps the best thing about Prime Day season is that other major retailers are looking to cash in on the shopping palooza, offering similar or better offerings on top products -- and even membership opportunities. Right now, W

Topics: deals membership prime walmart zdnet

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Context Engineering for Agents

news.ycombinator.com Unknown 2026-02-06 22:56:20

Lance Martin TL;DR Agents need context to perform tasks. Context engineering is the art and science of filling the context window with just the right information at each step of an agent’s trajectory. In this post, I group context engineering into a few common strategies seen across many popular agents today. Context Engineering As Andrej Karpathy puts it, LLMs are like a new kind of operating system. The LLM is like the CPU and its context window is like the RAM, serving as the model’s work

Topics: agent agents context memories tool

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Young, not dumb, and broke? Amazon is giving you 6 months of Prime for free

androidauthority.com Unknown 2026-02-10 10:27:41

Edgar Cervantes / Android Authority TL;DR Amazon’s new Prime for Young Adults membership is now available with a free six-month trial. Anyone between the ages of 18 and 24 is eligible for membership. The trial offers all the benefits of a Prime membership, including six months of free Prime Video streaming. Amazon’s Prime Day sale is almost here, and it’s already raining deals and offers. Not only has Amazon already started discounting its own devices early, it’s also now offering a very exc

Topics: adults amazon membership prime trial

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Despite Protests, Elon Musk Secures Air Permit for xAI

wired.com Molly Taft 2026-02-13 06:41:33

A local health department in Memphis has granted Elon Musk’s xAI data center an air permit to continue operating the gas turbines that power the company’s Grok chatbot. The permit comes amid widespread community opposition and a looming lawsuit alleging the company violated the Clean Air Act. The Shelby County Health Department released its air permit for the xAI project Wednesday, after receiving hundreds of public comments. The news was first reported by the Daily Memphian. In June, the Memp

Topics: air health memphis turbines xai

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Google Home’s new sharing tools are now available to everyone

androidauthority.com Unknown 2026-02-15 23:07:07

Edgar Cervantes / Android Authority TL;DR Google Home is now widely rolling out its new Member role feature. It was previously available to Google Home users enrolled in the public preview program. Member role allows you to invite family members, including children under 13, as well as guests and roommates to manage specific devices or your entire smart home. Google Home’s Member access feature is now rolling out widely with version 3.3 of the app. The feature makes it easier to share a devi

Topics: access feature google home member

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Google makes it easier to let friends and kids control your smart home

theverge.com Emma Roth 2026-02-16 16:40:34

is a news writer who covers the streaming wars, consumer tech, crypto, social media, and much more. Previously, she was a writer and editor at MUO. Google Home’s latest update will make it easier to decide who in your household can control your smart home. It comes with a new feature, which Google first started testing last year, that will let you assign people “Admin” and “Member” roles. People with Admin status have full control of all the devices, services, and users within their smart home

Topics: control device google home members

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Show HN: Core – open source memory graph for LLMs – shareable, user owned

news.ycombinator.com Unknown 2026-02-16 17:24:24

Contextual Observation & Recall Engine C.O.R.E is a shareable memory for LLMs which is private, portable and 100% owned by the user. You can either run it locally or use our hosted version and then connect with other tools like Cursor, Claude to share your context at multiple places. C.O.R.E is built for two reasons: To give you complete ownership of your memory, stored locally and accessible across any app needing LLM context. To help SOL (your AI assistant) access your context, facts, and p

Topics: api ingest key memory search

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Ask HN: 80s electronics book club; anyone remember this illustrator?

news.ycombinator.com Unknown 2026-02-15 22:46:18

In the early 80's in the US, a popular DIY electronics magazine had a book of the month club that I loved. Most were small and leather bound hardback with topics like: make your own hydrophone; augmented reality (required a full room and a boom arm, sadly); an LCD model rocket launcher ignition; computer vision; lots and lots of robots. One book I remember (large, softcover, yellow cover) featured black and white, pen and ink illustrations of fantastically complex robots and machines. One that

Topics: book illustrations lots remember robots

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This Survey Asked Neuroscientists If Memories Can Be Extracted From the Dead. Here’s What They Said

gizmodo.com Natalia Mesa 2026-02-19 06:20:54

The allure and terror of transferring your consciousness to a computer has long been fodder for cyberpunk novels and billionaire-backed immortality startups. But a substantial chunk of neuroscientists think it might be possible to extract memories from a preserved brain and store those memories inside a computer, according to a new study. The study, published in the journal PLOS One, suggests that most neuroscientists believe that memory has a physical basis and, on average, give a 40% probabil

Topics: brain memories memory neuroscientists study

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Here Is Everyone Mark Zuckerberg Has Hired So Far for Meta’s ‘Superintelligence’ Team

wired.com Kylie Robison 2026-02-19 21:09:25

Mark Zuckerberg notified Meta staff today to introduce them to the new superintelligence team. The memo, which WIRED obtained, lists names and bios for the recently hired employees, many of whom came from rival AI firms like OpenAI, Anthropic, and Google. Over the past few months, Meta CEO Mark Zuckerberg has been on a recruiting frenzy to poach some of the most sought-after talent in AI. The social media giant has invested $14.3 billion in Scale AI and hired Alexandr Wang, its CEO, to run Meta

Topics: ai memo meta new zuckerberg

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Helix: A Modern, High-Performance Language

news.ycombinator.com Unknown 2026-02-19 21:08:24

Helix: A Modern, High-Performance Language. Key Goals of Helix: High-performance: The language is designed to be as fast as C, with modern features and a more expressive syntax. Safety: Focused on safe memory management without sacrificing developer productivity and freedom. Borrow Checker: Implements a Advanced Memory Tracking system for memory safety, while being far less strict than other languages. Robustness: Provides tools and features that ensure code stability and reduce runtime err

Topics: code error helix memory safety

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Startling Percentage of Neuroscientists Say We Could Extract Memories From Dead Brains

futurism.com Unknown 2026-02-19 12:45:16

Image by Getty Images Studies When you die, your memories die with you, never to be experienced again. Or at least, that's always been how the case. Now, though, in an exercise to assess shifting scientific consensus, a cohort of 312 neuroscientists were quizzed by researchers on whether memories might live on in the structure of deceased brains. And a surprisingly larger number — 70.7 percent of the group — believe they may, findings which were newly published in the science journal PLOS One.

Topics: brain memories neuroscientists science scientists

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Blackwell: Nvidia's GPU

news.ycombinator.com Chester Lam 2026-02-21 00:40:13

Nvidia has a long tradition of building giant GPUs. Blackwell, their latest graphics architecture, continues that tradition. GB202 is the largest Blackwell die. It occupies a massive 750mm2 of area, and has 92.2 billion transistors. GB202 has 192 Streaming Multiprocessors (SMs), the closest equivalent to a CPU core on a GPU, and feeds them with a massive memory subsystem. Nvidia’s RTX PRO 6000 Blackwell features the largest GB202 configuration to date. It sits alongside the RTX 5090 in Nvidia’s

Topics: amd blackwell l2 memory nvidia

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Latest Tech News

Memory-Level Parallelism: Apple M2 vs. Apple M4

Prime Day Is the Prime Time to Add a SanDisk Memory Card to Your Camera or Laptop for Peanuts

6 Amazon Prime Day Mattress and Bedding Deals on Our Favorite Gear (2025)

RFK Jr. barred registered Democrats from being vaccine advisors, lawsuit says

Chinese researchers unveil MemOS, the first ‘memory operating system’ that gives AI human-like recall

Memstop: Use LD_PRELOAD to delay process execution when low on memory

WebAssembly: Yes, but for What?

Public exploits released for Citrix Bleed 2 NetScaler flaw, patch now

Walmart Plus membership is 50% off, and has something Amazon doesn't: the Nintendo Switch 2

Public exploits released for CitrixBleed 2 NetScaler flaw, patch now

This 1-Year Sam’s Club Membership (Auto-Renew) Drops to Nearly Free, a Cheap Alternative If Costco Is Too Far

These are the best new MacBook deals this July: options starting at $649

Here are 33 of our favorite deals from Amazon’s early Prime Day sale

How the Binding of Two Brain Molecules Creates Memories That Last a Lifetime

ADXL345 (2024)

ADXL345 Die Analysis

VLLM: Easy, Fast, and Cheap LLM Serving with PagedAttention

You can still get a Walmart Plus membership for 50% off and snag exclusive access to Walmart's anti-Prime Day sale

Context Engineering for Agents

Young, not dumb, and broke? Amazon is giving you 6 months of Prime for free

Despite Protests, Elon Musk Secures Air Permit for xAI

Google Home’s new sharing tools are now available to everyone

Google makes it easier to let friends and kids control your smart home

Show HN: Core – open source memory graph for LLMs – shareable, user owned

Ask HN: 80s electronics book club; anyone remember this illustrator?

This Survey Asked Neuroscientists If Memories Can Be Extracted From the Dead. Here’s What They Said

Here Is Everyone Mark Zuckerberg Has Hired So Far for Meta’s ‘Superintelligence’ Team

Helix: A Modern, High-Performance Language

Startling Percentage of Neuroscientists Say We Could Extract Memories From Dead Brains

Blackwell: Nvidia's GPU

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