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Interesting PEZY-SC4s

news.ycombinator.com Chester Lam 2025-09-28 09:15:28

Japan has a long history of building domestic supercomputer architectures dating back to the 1980s. PEZY Computing is one player in Japan’s supercomputing scene alongside Fujitsu and NEC, and has taken several spots in the Green500 list. RIKEN’s Exascaler-1.4 used PEZY-SC chips to take first place in Green500’s November 2015 rankings. More recently, PEZY-SC3 placed 12th on Green500’s November 2021 list. PEZY presented their newest architecture, PEZY-SC4S, at Hot Chips 2025. While the physical pr

Topics: cache instruction pezy sc3 sc4s
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Why is Japan still investing in custom floating point accelerators?

news.ycombinator.com Timothy Prickett Morgan 2025-10-01 19:27:24

It has taken nearly two decades and an immense amount of work by millions of people for high performance computing to go mainstream with GenAI. And now, we live in a world where AI servers crammed with accelerators account for half of the money spent on systems worldwide. There is no law anywhere that says that accelerator has to be a GPU, although that has been the accelerator of choice by far because GPUs are, like CPUs, general purpose processors that are explicitly designed to support vario

Topics: chip computing cores pezy sc4s
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Why Is Japan Still Investing in Custom Floating Point Accelerators?

news.ycombinator.com Timothy Prickett Morgan 2025-10-04 02:27:24

It has taken nearly two decades and an immense amount of work by millions of people for high performance computing to go mainstream with GenAI. And now, we live in a world where AI servers crammed with accelerators account for half of the money spent on systems worldwide. There is no law anywhere that says that accelerator has to be a GPU, although that has been the accelerator of choice by far because GPUs are, like CPUs, general purpose processors that are explicitly designed to support vario

Topics: chip computing cores pezy sc4s
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T-Mobile’s latest 5G network upgrades mean smoother video calls and online games

androidauthority.com Unknown 2026-01-01 00:27:58

Joe Maring / Android Authority TL;DR T-Mobile is the first US-based carrier to upgrade to a new “L4S” network technology, which reduces latency in its 5G networks. L4S improves upon existing technologies by decongesting networks in real-time, prioritizing applications that require faster internet. Thankfully, you don’t need to upgrade to newer hardware to use T-Mobile’s new low-latency tech. Choppy video calls or online games are among the most wicked ways to ruin someone’s mood. Every carri

Topics: 5g l4s mobile networks new
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T-Mobile Upgrades Network With L4S to Improve Video Calls and Cloud Gaming

gizmodo.com Bruce Gil 2026-01-02 08:55:36

If you’re a T-Mobile customer, you may have noticed that your FaceTime calls have gotten smoother. That’s because the carrier announced today that it’s rolling out support for a new tech called Low Latency, Low Loss, Scalable Throughput (L4S) across its 5G Advanced network. T-Mobile says it’s the first U.S. wireless provider to deploy L4S at scale, and it’s promising a noticeable boost to video calls and cloud gaming. L4S works by helping your phone or device stay ahead of network congestion b

Topics: calls l4s low mobile remote
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T-Mobile is bringing low-latency tech to 5G for the first time

theverge.com Jay Peters 2026-01-03 08:00:00

is a news editor covering technology, gaming, and more. He joined The Verge in 2019 after nearly two years at Techmeme. Over the next few weeks, T-Mobile is expanding support for the L4S standard, which stands for “Low Latency, Low Loss, Scalable Throughput.” The technology helps high-priority internet packets move along with fewer delays, to make video calls and cloud games feel smoother and reduce annoying hitches. Users won’t need a special phone or plan to take advantage of the benefits fr

Topics: congestion l4s mobile packets saw
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I recommend this Lenovo ThinkPad to remote workers - and it's on sale for a limited time

zdnet.com Cesar Cadenas 2026-01-16 12:53:54

ZDNET's key takeaways Lenovo's fifth-generation ThinkPad T14s is available now for $2,649. It's a particularly hardy laptop and boasts solid battery life. However, the Intel chipset delivers puts a cap on high-end performance. View now at Best Buy View now at Lenovo more buying choices Lenovo is holding a new clearance sale for the ThinkPad T14s Gen 5. The base model has dropped to $1,214, its lowest price yet. Lenovo has seven distinct ThinkPad categories on its website, each with a unique

Topics: gen laptop lenovo t14s thinkpad
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Performance Debugging with LLVM-mca: Simulating the CPU

news.ycombinator.com Ivica Bogosavljević 2026-02-13 10:41:09

Some time ago I had a performance problem that wasn’t easy to explain by just looking at the code, since the version I expected to be faster was actually slower. Since the problem is simple yet illustrative, I am using it as a showcase on how to debug performance issues using llvm-mca. According to it’s documentation llvm-mca is a performance analysis tool that uses information available in LLVM (e.g. scheduling models) to statically measure the performance of machine code in a specific CPU. In

Topics: 4s execution instruction load version
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