computers

22 Jun 2026

Slashdot

2,000 Retired Google Pixel Phones Get a Second Life As a Private Cloud

UC San Diego researchers are working with Google to build a private cloud from 2,000 retired Pixel Fold motherboards, demonstrating how discarded smartphones could provide useful, low-cost computing capacity. "The full smartphone cluster is expected to launch this fall," reports The Register. "Depending on how well the initial phase goes, we're told the cluster could grow even larger." From the report Once the phone's motherboards have been extracted from their shells, the researchers say that the chips hiding within remain more than potent enough to be useful for a variety of tasks. In many cases, the single-threaded performance of these chips is as good as, if not better than, what you'd find from a many-cored datacenter chip. The Pixel Fold smartphones, which will form the basis of the cluster, are powered by a Google Tensor G2 processor with two 2.85 GHz Cortex-X1, two 2.35 GHz Cortex-A78 and four 1.80 GHz Cortex-A55 Arm cores, a Mali-G710 MP7 GPU, and 12 GB of system memory. Early benchmarking using the SPEC suite suggests that 25-50 phones should deliver performance similar to that of a conventional server. The major challenge, instead, is distributing workloads across multiple devices, each of which has a handful of cores of one or more varieties, and most have 8-12 GB of memory. UCSD researchers are approaching this challenge from a couple of different angles. The first is by targeting applications that can easily fit within a single device. The second is using Kubernetes to orchestrate container deployments across clusters of 25-50 phones. For this to work, the devices first need to be flashed with a Linux operating system suitable for the job. While Android makes for a great handheld experience, it is not intended for server duty. In the blog post, researchers note that Android includes functionality intended to stop rogue applications from chewing up excessive amounts of memory and draining your battery. In server context, these safety mechanisms are no longer necessary. [Ryan Kastner, an associate professor of computer science at UCSD] told us this was by no means an easy task, but the team has made steady progress toward getting Linux running smoothly on these devices, including support for the phone's onboard GPUs. Access to some functionality, like the chip's integrated tensor processing unit, remains elusive. Clustering these devices will require networking the phones together. Normally these devices would connect over cellular or Wi-Fi, but at this scale, this not only isn't practical, but also has implications for security, he explained. Instead, the team will employ PCBs that both supply power and break out wired Ethernet networking. The researchers suggest that many EdTech, grading, and research workloads commonly run by universities in the cloud are small enough to run on the cluster without issue. "The vast majority of these applications are within the capabilities of a single smartphone to host, with the standard grading backend running on small cloud instances," a blog post detailing the planned deployment reads. "Early experiments show that even a moderately-sized cluster of 20 phones is capable of supporting peak submission rates for a 75+ student class."

Ubisoft Co-Founder Claude Guillemot Dies In Plane Crash

An anonymous reader quotes a report from TechCrunch: Claude Guillemot, co-founder of French video game company Ubisoft, died Friday at the age of 69. According to French media (via Bloomberg), Guillemot died in a plane crash in the French resort town of La Baule. He was one of two people aboard the plane, both of whom died. Guillemot founded Ubisoft with his four brothers in 1986. Since then, the company has published the Assassin's Creed, Far Cry, Prince of Persia, and Tom Clancy video game franchises, as well as many other titles. The family retains control of Ubisoft, and Guillemot's brother Yves is still CEO. Guillemot was also chairman of Guillemot Corp., which makes gaming and audio accessories. "Ubisoft was deeply saddened to learn of the death of Claude Guillemot, co-founder of the group and chairman of Guillemot Corp., in an accident," Ubisoft said in a statement. "Our thoughts are with his family and loved ones during this difficult time. No further statements will be made at this time."

Several US States Bet That AI Can Solve Their Prison Recidivism Crisis

America's state prison systems need ways "to keep people from returning to prison," reports the Wall Street Journal, "when an estimated 40% end up back behind bars within three years." Part of the problem comes in the form of filing cabinets, manila folders and legacy digital databases. In other words, records for a single prisoner might be kept in a dozen places... Now a group of 19 prison systems are tackling the problem with digital tools and artificial intelligence in some cases. They are contracting with San Francisco nonprofit Recidiviz, whose computer systems bring together prisoner data from its disparate sources into digital dashboards. From there, corrections staff can see information - such as court records and notes from parole-board hearings - about a prisoner or parolee all in one place. The company says its efforts are working: Recidivism has fallen 16% in the prison population its systems track. It is the result of "just streamlining these workflows and knitting someone's journey together end to end," says Clementine Jacoby, chief executive officer of Recidiviz. Some criminal-justice groups show that recidivism is trending downward in general, though most of that data is nearly a decade old... The statistics from 11 states stop at 2019, and for four states stop at 2016. With 10 other states, no data was reported.

21 Jun 2026

OSnews

A tale of two path separators

In macOS, you can apparently create files and directories in the Finder with names that include slashes. If you then go into the terminal and take a look with ls, you'll see that the slashes are actually colons. I don't understand all the nuances, but I know this is a side-effect of the fact that macOS has not one but two path separators: the slash (/) and the colon (:). The two separators are used in different contexts, and the system will translate between them as needed. These two separators reflect the two parent systems of modern macOS: classic Mac OS and the Unix-like NeXTSTEP. When they were joined together, Apple's engineers had to build a file system that was compatible with both the classic Mac's file system (the Mac OS Extended File System, aka HFS+), and with NeXTSTEP's file system (the Unix file system, aka UFS). Among other differences, these systems had different path separators: HFS+ used a colon, while UFS used a slash. ↫ Alex Chan (article from 2021) I had no idea macOS worked this way, but it makes sense considering the platform's dual history. What's interesting is that when Apple moved to APFS almost a decade ago, this duality in path separators remained, most likely for backwards compatibility reasons. In a sense, this is somewhat similar to Windows supporting both backward and forward slashes, with the former being a leftover from DOS, and the latter an addition (to Windows) from the UNIX world. None of that beats Windows when using the Japanese or Korean locale, though. Because Japanese and Korean Windows use different codepages than Windows in the Americas and Western Europe, these versions of Windows render the backslash as the yen sign (¥) and and won (₩) sign respectively. As such, something like the Program Files directory actually renders like C:¥Program Files¥ and C:₩Program Files₩. Similar issues occurred in other Windows locales as well, but the impact of this in Japan and South Korea were so widespread that people just expect it to be that way, even if it's easily fixed today. I can't find if Windows 11 still uses ¥/₩ in Japan/South Korea, since the last references of it I can quickly uncover all point to Windows 10.

21 Jun 2026 9:09pm GMT

Apple internals: Swift in the kernel

Apple's Swift has become the de-facto language for Apple's own developers for a while now, and it seems that with the new operating system releases from the company unveiled during WWDC, Switch is now also being used in the kernel. Naturally I dropped what I was doing and went grepping through the iOS 27 kernelcache. Alas, nothing came of it. All is not lost though: I found the Embedded Swift runtime in macOS 27, sitting in com.apple.kec.pthread of all places. Then I went poking around the root filesystem and it turns out Apple gave the whole effort a name: KernelKit. Let's dissect it. ↫ Josh Maine It's still quite limited at this time, which makes sense - you don't want to be too crazy with the core of the operating system that runs on god knows how many PCs, smartphones, and other devices. It's also entirely contained within a few kexts as embedded runtimes, and the XNU kernel itself remains entirely C and C++.

21 Jun 2026 7:10pm GMT

“I stored a website in a favicon”

Every website has a favicon. It's that little icon in your browser tab. Usually you upload it once and then never think about it again. But. A favicon is just an image. An image is just pixels. And pixels are just bytes. So of course I wondered if I could store something inside one. ↫ Tim Wehrle I love it when people do something useless just for fun.

21 Jun 2026 6:58pm GMT