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Optimizing ClickHouse for Intel's 280 core processors

news.ycombinator.com Unknown 2025-09-24 10:46:03

This is a guest post from Jiebin Sun, Zhiguo Zhou, Wangyang Guo and Tianyou Li, performance optimization engineers at Intel Shanghai. Intel's latest processor generations are pushing the number of cores in a server to unprecedented levels - from 128 P-cores per socket in Granite Rapids to 288 E-cores per socket in Sierra Forest, with future roadmaps targeting 200+ cores per socket. These numbers multiply on multi-socket systems, such servers may consist of 400 and more cores. The paradigm of "m

Topics: cache hash memory optimization performance

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How much RAM do you really need in 2025? I broke it down for Mac and Windows users

zdnet.com Cesar Cadenas 2025-09-25 14:00:00

Kerry Wan/ZDNET Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways RAM allows computers run fast and optimally. 16GB is now the standard for PCs and laptops. Heavy users may need more RAM. Know when to upgrade. I used to struggle when shopping for a new computer. Over time, I learned to narrow things down to what I call the "performance trifecta" -- three main components you should be mindful of when buying a laptop or desktop: processor, storage drive, and RAM. Th

Topics: computer laptop memory ram windows

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‘The Morning Show’ season 4 premieres on Apple TV+, as Apple greenlights season 5

9to5mac.com Marcus Mendes 2025-09-26 00:03:52

Tonight has been a good night for “The Morning Show” fans. Not only is the first episode of season 4 now streaming, but Apple has also officially announced a season 5 renewal. Here’s what to expect. The Morning Show is one of the longest-running Apple TV+ series. It debuted on November 1, 2019, alongside other high-profile shows such as For All Mankind, See, Snoopy in Space, and Dickinson. Tonight, The Morning Show returns for its highly anticipated season 4, with strong reinforcements to its

Topics: apple morning season tonight tv

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Plugin System

news.ycombinator.com Unknown 2025-09-27 07:10:44

With several lines of code, you can implement the exact feature tailored to your needs. Furthermore, with the Official User Scripts plugin, you can just copy-and-paste code snippets into IINA without writing plugin packages.

Topics: code copy exact furthermore plugin

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New Phoenix attack bypasses Rowhammer defenses in DDR5 memory

bleepingcomputer.com Unknown 2025-09-29 07:01:24

Academic researchers have devised a new variant of Rowhammer attacks that bypass the latest protection mechanisms on DDR5 memory chips from SK Hynix. A Rowhammer attack works by repeatedly accessing specific rows of memory cells at high-speed read/write operations to cause enough electrical interference to alter the value of the nearby bits from one to zero and vice-versa (bit flipping). An attacker could potentialluy corrupt data, increase their privileges on the system, execute malicious cod

Topics: ddr5 memory phoenix refresh rowhammer

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Self-Assembly Gets Automated in Reverse of 'Game of Life'

news.ycombinator.com George Musser 2025-09-26 05:15:56

Alexander Mordvintsev showed me two clumps of pixels on his screen. They pulsed, grew and blossomed into monarch butterflies. As the two butterflies grew, they smashed into each other, and one got the worst of it; its wing withered away. But just as it seemed like a goner, the mutilated butterfly did a kind of backflip and grew a new wing like a salamander regrowing a lost leg. Mordvintsev, a research scientist at Google in Zurich, had not deliberately bred his virtual butterflies to regenerate

Topics: mordvintsev ncas neural rules said

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Creating a VGA Signal in Hubris

news.ycombinator.com Unknown 2025-09-29 19:04:24

A while ago I got a ST Nucleo-H753ZI evaluation board because I wanted to try out Hubris, Oxide's embedded operating system. After getting the basic demo app with the blinking lights running I set it aside for a lack of an idea what to do with it. A few weeks ago I was looking through old Raspberry Pi accessories on the hunt for a project. What stuck out to me wasn't any of the Raspberry Pi stuff, but the old 4 by 3 VGA monitor I had standing around. Could I just wire those pins in the VGA cable

Topics: dac dma memory set task

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AMD’s RDNA4 GPU architecture

news.ycombinator.com Chester Lam 2025-09-30 03:04:18

RDNA4 is AMD’s latest graphics-focused architecture, and fills out their RX 9000 line of discrete GPUs. AMD noted that creating a good gaming GPU requires understanding both current workloads, as well as taking into account what workloads might look like five years in the future. Thus AMD has been trying to improve efficiency across rasterization, compute, and raytracing. Machine learning has gained importance including in games, so AMD’s new GPU architecture caters to ML workloads as well. Fro

Topics: amd cache l2 memory rdna4

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Claude’s memory architecture is the opposite of ChatGPT’s

news.ycombinator.com Shlok Khemani 2025-10-01 08:55:50

Claude Memory: A Different Philosophy How Claude memory works, how it differs from ChatGPT, and what these approaches reveal. Earlier this week, I dissected ChatGPT's memory system. Since then, I've been doing the same for Claude and realized something remarkable: these two leading AI assistants have built completely opposite memory systems. In this post, I'll start by breaking down exactly how Claude's memory works—what it stores and how it retrieves information. Then we'll get to the intere

Topics: chatgpt claude conversations memory type

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Apple’s latest iPhone security feature just made life more difficult for spyware makers

techcrunch.com Lorenzo Franceschi-Bicchierai 2025-10-02 23:00:46

Buried in an ocean of flashy novelties announced by Apple this week, the tech giant also revealed new security technology for its latest iPhone 17 and iPhone Air devices. This new security technology was made specifically to fight against surveillance vendors and the types of vulnerabilities they rely on the most, according to Apple. The feature is called Memory Integrity Enforcement (MIE) and is designed to help stop memory corruption bugs, which are some of the most common vulnerabilities exp

Topics: apple memory mie said spyware

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Anthropic’s Claude AI can now automatically ‘remember’ past chats

theverge.com Emma Roth 2025-10-03 03:43:46

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. Posts from this author will be added to your daily email digest and your homepage feed. Anthropic will now let its Claude AI chatbot “remember” the details of previous conversations without prompting. The feature is only rolling out for Team and Enterprise users for now, allowing Claude to automatically incorporate someone’s preferences, the contex

Topics: anthropic chats claude memories users

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Behind the scenes of Bun Install

news.ycombinator.com Unknown 2025-10-03 09:39:29

Running bun install is fast, very fast. On average, it runs ~7× faster than npm, ~4× faster than pnpm, and ~17× faster than yarn. The difference is especially noticeable in large codebases. What used to take minutes now takes (milli)seconds. These aren't just cherry-picked benchmarks. Bun is fast because it treats package installation as a systems programming problem, not a JavaScript problem. In this post we’ll explore what that means: from minimizing syscalls and caching manifests as binary,

Topics: bun data file memory package

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Exploding Primordial Black Holes Could ‘Rewrite the History of the Universe’

gizmodo.com Gayoung Lee 2025-10-04 03:40:17

It’s been a fantastic week for Stephen Hawking’s black hole theories. Yesterday, LIGO confirmed the famed physicist’s prediction about black hole mergers. Now, another team believes they’ve found a way to observe primordial black holes—cosmic behemoths that emerged not from the ashes of dying stars but from the chaos of the early universe. In a paper published September 9 in Physical Review Letters, a team of physicists make the bold prediction that, within the next decade, we will be able to w

Topics: black hawking holes primordial universe

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Apple’s Big Bet to Eliminate the iPhone’s Most Targeted Vulnerabilities

wired.com Lily Hay Newman 2025-10-04 06:59:23

Apple launched a slate of new iPhones on Tuesday loaded with the company's new A19 and A19 Pro chips. Along with an ultra-thin iPhone Air and other redesigns, the new phones come with a less flashy upgrade that could turn out to be the true killer feature. A security improvement called “Memory Integrity Enforcement” combines always-on chip-level protections with software defenses in an effort to harden iPhones against the most common—and commonly exploited—software vulnerabilities. In recent ye

Topics: apple memory safety software vulnerabilities

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Behind the Scenes of Bun Install

news.ycombinator.com Unknown 2025-10-04 15:39:29

Running bun install is fast, very fast. On average, it runs ~7× faster than npm, ~4× faster than pnpm, and ~17× faster than yarn. The difference is especially noticeable in large codebases. What used to take minutes now takes (milli)seconds. These aren't just cherry-picked benchmarks. Bun is fast because it treats package installation as a systems programming problem, not a JavaScript problem. In this post we’ll explore what that means: from minimizing syscalls and caching manifests as binary,

Topics: bun data file memory package

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Intel's E2200 "Mount Morgan" IPU at Hot Chips 2025

news.ycombinator.com Chester Lam 2025-10-05 07:21:35

Intel’s IPUs, or Infrastructure Processing Units, evolved as network adapters developed increasingly sophisticated offload capabilities. IPUs take things a step further, aiming to take on a wide variety of infrastructure services in a cloud environment in addition to traditional software defined networking functions. Infrastructure services are run by the cloud operator and orchestrate tasks like provisioning VMs or collecting metrics. They won’t stress a modern server CPU, but every CPU core se

Topics: cloud intel ipu morgan mount

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CPU Utilization is Wrong (2017)

news.ycombinator.com Unknown 2025-10-03 13:06:39

The metric we all use for CPU utilization is deeply misleading, and getting worse every year. What is CPU utilization? How busy your processors are? No, that's not what it measures. Yes, I'm talking about the "%CPU" metric used everywhere, by everyone. In every performance monitoring product. In top(1). What you may think 90% CPU utilization means: What it might really mean: Stalled means the processor was not making forward progress with instructions, and usually happens because it is waitin

Topics: cpu cycles ipc memory utilization

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On ‘Alien: Earth,’ Spit’s About to Hit the Fan

gizmodo.com Germain Lussier 2025-10-06 07:20:55

After an exciting, revealing week away from the main storyline, Alien: Earth was back in Neverland for its latest episode. So many stories were left lingering, and with only three episodes to go this season, it’s time to kick them into high gear. Stories like Wendy being able to communicate with a xenomorph, Nibs becoming violent because she thinks she’s pregnant, and Slightly being blackmailed by Morrow into sneaking an alien embryo off the island. Each story, and more, took a big leap ahead th

Topics: arthur joe morrow wendy xenomorph

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Knowledge and memory

news.ycombinator.com Unknown 2025-10-03 01:15:59

September 6, 2025 The other day, I asked Claude how to do something using a particular Ruby library, and it hallucinated three nonexistent methods in a row. We can ask “why do language models do this?” but/and we can also ask, “why doesn’t Robin do this?” I think it’s because I don’t only know things: I remember learning them. My knowledge is sedimentary, and I can “feel” the position and solidity of different facts and ideas in that mass. I can feel, too, the airy disconnect of

Topics: awe don guage guess memory

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Office CMBS Delinquency Rate Spikes to Record 11.7%

news.ycombinator.com Unknown 2025-10-06 23:37:04

Extend-and-pretend and forbearance deals widely implemented to “cure” delinquent CRE mortgages. The office and multifamily sectors of commercial real estate loans got further bludgeoned in August, despite large-scale extend-and-pretend and forbearance deals executed in the hopes for better times and lower interest rates and more demand so that lenders don’t end up with the property and a huge loss. The delinquency rate of office mortgages that have been securitized into commercial mortgage-b

Topics: cmbs delinquency mortgage office rate

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Knowledge and Memory

news.ycombinator.com Unknown 2025-10-03 21:15:59

September 6, 2025 The other day, I asked Claude how to do something using a particular Ruby library, and it hallucinated three nonexistent methods in a row. We can ask “why do language models do this?” but/and we can also ask, “why doesn’t Robin do this?” I think it’s because I don’t only know things: I remember learning them. My knowledge is sedimentary, and I can “feel” the position and solidity of different facts and ideas in that mass. I can feel, too, the airy disconnect of

Topics: awe don guage guess memory

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Apple says the iPhone 17 comes with a massive security upgrade

theverge.com Richard Lawler 2025-10-07 07:05:58

is a senior editor following news across tech, culture, policy, and entertainment. He joined The Verge in 2021 after several years covering news at Engadget. It’s less noticeable than a thinner profile or trick camera lenses, but Apple is pointing out another upgrade in the iPhone 17 family of phones that it says is part of “the most significant upgrade to memory safety in the history of consumer operating systems.” Explicitly targeting the spyware industry that produces exploits for tools like

Topics: apple features iphone memory security

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Immunotherapy drug clinical trial results: half of tumors shrink or disappear

news.ycombinator.com August 2025-10-07 08:55:16

Over the past 20 years, a class of cancer drugs called CD40 agonist antibodies have shown great promise—and induced great disappointment. While effective at activating the immune system to kill cancer cells in animal models, the drugs had limited impact on patients in clinical trials and caused dangerously systemic inflammatory responses, low platelet counts, and liver toxicity, among other adverse reactions—even at a low dose. But in 2018, the lab of Rockefeller University’s Jeffrey V. Ravetch

Topics: cancer cells immune patients tumors

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Immunotherapy drug eliminates aggressive cancers in clinical trial

news.ycombinator.com August 2025-10-07 18:55:16

Over the past 20 years, a class of cancer drugs called CD40 agonist antibodies have shown great promise—and induced great disappointment. While effective at activating the immune system to kill cancer cells in animal models, the drugs had limited impact on patients in clinical trials and caused dangerously systemic inflammatory responses, low platelet counts, and liver toxicity, among other adverse reactions—even at a low dose. But in 2018, the lab of Rockefeller University’s Jeffrey V. Ravetch

Topics: cancer cells immune patients tumors

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Memory Integrity Enforcement

news.ycombinator.com Posted Apple Security Engineering 2025-10-08 07:25:03

Memory Integrity Enforcement (MIE) is the culmination of an unprecedented design and engineering effort, spanning half a decade, that combines the unique strengths of Apple silicon hardware with our advanced operating system security to provide industry-first, always-on memory safety protection across our devices — without compromising our best-in-class device performance. We believe Memory Integrity Enforcement represents the most significant upgrade to memory safety in the history of consumer

Topics: emte enforcement integrity memory tag

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Nobel laureate David Baltimore dead at 87

arstechnica.com Unknown 2025-10-10 11:18:02

Nobel Prize-winning molecular biologist and former Caltech president David Baltimore—who found himself at the center of controversial allegations of fraud against a co-author—has died at 87 from cancer complications. He shared the 1975 Nobel Prize in Physiology for his work upending the then-consensus that cellular information flowed only in one direction. Baltimore is survived by his wife of 57 years, biologist Alice Huang, as well as a daughter and granddaughter. "David Baltimore's contributi

Topics: baltimore cancer david dna rna

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iPhone 17 vs. iPhone 17 Air, 17 Pro, 17 Pro Max: Rumored Specs Rundown

cnet.com See Full Bio 2025-10-12 00:00:00

The iPhone 17 lineup will be revealed tomorrow, but we couldn't wait until the phones are released -- we're comparing them now. How? Using the most credible rumors of what's coming in the iPhone 17 series, including a potential super-thin iPhone 17 Air, to speculate on how Apple's next big smartphones will stack up. Last year's iPhone 16 series added a handful of upgrades over its predecessors, most notably the new Camera Control key. While the basic iPhone 16 and Plus models got a new ultrawid

Topics: 17 camera iphone pro rumors

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Apple Watch SE 3 announcement this week looks quite likely thanks to last-minute leak

9to5mac.com Michael Burkhardt 2025-10-11 18:42:06

Thanks to a new last-minute leak from an anonymous X account, it now seems all but certain that Apple’s next generation Apple Watch SE will be launching in a number of days. Rumors for this new model have been faint, leading to some skepticism around whether or not it’s truly launching this year – but now things seem solid. This anonymous X account wishes to remain private, so we can’t directly link to the tweet – though the user has a highly accurate track record. Late on Sunday, the account

Topics: account apple rumors series watch

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Matmul on Blackwell: Part 2 – Using Hardware Features to Optimize Matmul

news.ycombinator.com Unknown 2025-10-10 13:16:18

In the first blog post in this series we explained Nvidia's Blackwell GPU architecture and concluded with a 4 line kernel that was a bit worse than cuBLAS. In fact, the performance was a lot worse coming in at 0.3% of cuBLAS and leaving 1758 TFLops on the table. In this post we are going to continue our journey and improve our performance by more than 50x our initial kernel benchmark. Along the way we are going to explain more GPU programming concepts and leverage novel Blackwell features. Note

Topics: memory shared thread tile tma

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5 Things We Loved, 3 Things We Didn’t About ‘Wednesday’ Season 2 Part 2

gizmodo.com Sabina Graves 2025-10-11 19:15:54

Season 2 of Wednesday is finally available to watch in its entirety on Netflix. And while the first half introduced a solid return, the second half almost holds up before a messy to-be-continued conclusion. Tim Burton puts his whole Burtonesque business on full display with a third-act antagonist reveal that both works and doesn’t. The Addams family being at the mechanical heart of another mystery creates a lot of fun lore for Wednesday (Jenna Ortega) to discover about her parents. This time Mo

Topics: family loved morticia season wednesday

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Latest Tech News

Optimizing ClickHouse for Intel's 280 core processors

How much RAM do you really need in 2025? I broke it down for Mac and Windows users

‘The Morning Show’ season 4 premieres on Apple TV+, as Apple greenlights season 5

Plugin System

New Phoenix attack bypasses Rowhammer defenses in DDR5 memory

Self-Assembly Gets Automated in Reverse of 'Game of Life'

Creating a VGA Signal in Hubris

AMD’s RDNA4 GPU architecture

Claude’s memory architecture is the opposite of ChatGPT’s

Apple’s latest iPhone security feature just made life more difficult for spyware makers

Anthropic’s Claude AI can now automatically ‘remember’ past chats

Behind the scenes of Bun Install

Exploding Primordial Black Holes Could ‘Rewrite the History of the Universe’

Apple’s Big Bet to Eliminate the iPhone’s Most Targeted Vulnerabilities

Behind the Scenes of Bun Install

Intel's E2200 "Mount Morgan" IPU at Hot Chips 2025

CPU Utilization is Wrong (2017)

On ‘Alien: Earth,’ Spit’s About to Hit the Fan

Knowledge and memory

Office CMBS Delinquency Rate Spikes to Record 11.7%

Knowledge and Memory

Apple says the iPhone 17 comes with a massive security upgrade

Immunotherapy drug clinical trial results: half of tumors shrink or disappear

Immunotherapy drug eliminates aggressive cancers in clinical trial

Memory Integrity Enforcement

Nobel laureate David Baltimore dead at 87

iPhone 17 vs. iPhone 17 Air, 17 Pro, 17 Pro Max: Rumored Specs Rundown

Apple Watch SE 3 announcement this week looks quite likely thanks to last-minute leak

Matmul on Blackwell: Part 2 – Using Hardware Features to Optimize Matmul

5 Things We Loved, 3 Things We Didn’t About ‘Wednesday’ Season 2 Part 2

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