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Monday, 16 Jul 18 - Tux Machines is a community-driven public service/news site which has been around for over a decade and primarily focuses on GNU/LinuxSubscribe now Syndicate content

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SBC Clusters — Beyond Raspberry Pi

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Linux

Cluster computers constructed of Raspberry Pi SBCs have been around for years, ranging from supercomputer-like behemoths to simple hobbyist rigs. More recently, we’ve seen cluster designs that use other open-spec hacker boards, many of which offer higher computer power and faster networking at the same or lower price. Farther below, we’ll examine one recent open source design from Paul Smith at Climbers.net that combines 12 octa-core NanoPi-Fire3 SBCs for a 96-core cluster.

SBC-based clusters primarily fill the needs of computer researchers who find it too expensive to book time on a server-based HPC (high performance computing) cluster. Large-scale HPC clusters are in such high demand, that it’s hard to find available cluster time in the first place.

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today's leftovers

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Misc

Red Hat Leftovers: Red Hat Summit, OpenShift, Fedora App

Filed under
Red Hat

Mozilla: Languages, New Features in Firefox Focus and Red Hat's E-mail Poll

Filed under
Moz/FF
  • Localization, Translation, and Machines

    Now that’s rule-based, and it’d be tedious to maintain these rules. Neural Machine Translation (NMT) has all the buzz now, and Machine Learning in general. There is plenty of research that improves how NMT systems learn about the context of the sentence they’re translating. But that’s all text.

    It’d be awesome if we could bring Software Analysis into the mix, and train NMT to localize software instead of translating fragments.

    For Firefox, could one train on English and localized DOM? For Android’s XML layout, a similar approach could work? For projects with automated screenshots, could one train on those? Is there enough software out there to successfully train a neural network?

  • New Features in Firefox Focus for iOS, Android – now also on the BlackBerry Key2

    Since the launch of Firefox Focus as a content blocker for iOS in December 2015, we’ve continuously improved the now standalone browser for Apple and Android while always being mindful of users’ requests and suggestions. We analyze app store reviews and evaluate regularly which new features make our privacy browser even more user-friendly, efficient and secure. Today’s update for iOS and Android adds functionality to further simplify accessing information on the web. And we are happy to make Focus for Android available to a new group: BlackBerry Key2 users.

  • Which email client do you prefer? [Ed: Thunderbird is probably still the best one around and it’s good that Mozilla hired people to maintain/develop it.]

    Email's decentralized nature makes it a fundamental part of the free and open internet. And because of this, there are a ton of clients to choose from, including several great open source choices. We've compiled lists of some of our favorites.

OSS Leftovers

Filed under
OSS
  • Who Are the Leaders in Open Source Software for IoT Application Development?

    Which vendors lead in open source IoT development tools? Our RTInsights survey looks at the intersection of IoT, dev tools, and open source software.

    The role of open source software (OSS) in IoT application development is unmistakable. But who are the vendors that enterprises look to for open source IoT development tools? We decided to find out with a survey that looked at the intersection of IoT, developer tools, and open source software (see “Research Objectives and Methodology,” below, for details on the 2017 Worldwide IoT Innovation Survey, conducted by RTInsights).

  • Google Releases Open Source Tool That Checks Postgres Backup Integrity

    Google has released a new open-source tool for verifying PostgreSQL (Postgres) database backups. 

    Enterprises using the PostgresSQL can use the tool to verify if any data corruption or data loss has occurred when backing up their database.  Google is already using the tool for customers of Google Cloud SQL for Postgres. Starting this week, it is now also available as open source code. 

    Brett Hesterberg, product manager at Google's cloud unit and Alexis Guajardo, a senior software engineer at the company described the new feature as a command line tool that administrators can execute against a Postgres database.

  • OpenBSD gains Wi-Fi "auto-join"

    In a change which is bound to be welcomed widely, -current has gained "auto-join" for Wi-Fi networks. Peter Hessler (phessler@) has been working on this for quite some time and he wrote about it in his p2k18 hackathon report.

  • OpenBSD Finally Has The Ability To Auto-Join WiFi Networks

    Granted OpenBSD isn't the most desktop focused BSD out there and that WiFi isn't therefore the highest priority for this security-focused operating system, but with the latest code it can now finally auto-join WiFi networks.

  • Best Practices for Open Source Governance [Ed: WhiteSource neglects to say that: 1) proprietary software is the problem here (make it FOSS and problem gone); 2) proprietary software poses greater compliance threats]

Security: Updates, DOD and Red Hat on "Security Hardening Rules"

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Red Hat
Security
  • Security updates for Thursday
  • Year-old router bug exploited to steal sensitive DOD drone, tank documents

     

    In May, a hacker perusing vulnerable systems with the Shodan search engine found a Netgear router with a known vulnerability—and came away with the contents of a US Air Force captain's computer. The purloined files from the captain—the officer in charge (OIC) of the 432d Aircraft Maintenance Squadron's MQ-9 Reaper Aircraft Maintenance Unit (AMU)at Creech Air Force Base, Nevada—included export-controlled information regarding Reaper drone maintenance.

  • Security Hardening Rules

    Many users of Red Hat Insights are familiar with the security rules we create to alert them about security vulnerabilities on their system, especially concerning high-profile issues such as Spectre/Meltdown or Heartbleed. In this post, I'd like to talk about the other category of security related rules, those related to security hardening.

    In all of the products we ship, we make a concerted effort to ship thoughtful, secure default settings to minimize the amount of configuration needed to do the work you want to do. With complex packages such as Apache httpd, however, every installation will require some degree of customization before it's ready for deployment to production, and with more complex configurations, there's a chance that a setting or the interaction between several settings can have security implications which aren't immediately evident. Additionally, sometimes systems are configured in a manner that aids rapid development, but those configurations aren't suitable for production environments.

    With our hardening rules, we detect some of the most common security-related configuration issues and provide context to help you understand the represented risks, as well as recommendations on how to remediate the issues.

The NVIDIA/AMD Linux GPU Gaming Benchmarks & Performance-Per-Dollar For July 2018

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Graphics/Benchmarks

In part with GPU demand by crypto-currency miners waning a bit, NVIDIA GeForce and AMD Radeon graphics card availability at retailers has been improving in recent weeks as well as seeing less inflated prices than just recently had been the case. Given the better availability and stabilizing prices, here is a fresh look of the current line-up of GeForce and Radeon graphics cards under Ubuntu Linux using the newest AMD/NVIDIA drivers and also providing performance-per-dollar metrics given current retail prices.

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Ubuntu: Demystifying Snap Confinement, 'Minimal', “Ubuntu Is Everywhere”, and Ubuntu Podcast

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Ubuntu
  • Demystifying Snap Confinement

    Snaps introduce some new concepts to the Linux ecosystem which developers can take advantage of, and snap users need to appreciate. When installing a snap, it’s important to understand what parts of the system the application wants access to. It’s up to the user to decide to install (or not) a snap, and the confinement model empowers the user in the decision making process.

  • Canonical releases Minimal Ubuntu for servers, containers and the cloud

    There's a new version of Ubuntu on the block -- Ubuntu Minimal. It's been stripped right back to the bone to leave a tiny footprint, and these back Linux distros should boot 40 percent faster than a standard Ubuntu server image. Despite the reduced footprint size, Ubuntu Minimal retains all of Ubuntu's standard tools (such as ssh, apt and snapd) and maintain full compatibility.

    Designed for cloud developers and ops, Canonical says that the release is intended for completely automated operations, and as such much of the user-friendliness has been stripped out, but it's still ideal for used in KVM, Google Computer Engine and AWS.

  • This Infographic From Canonical Shows “Ubuntu Is Everywhere”

    Microsoft Windows owns the lion’s share in the operating system market, but at the same time, we cannot deny the presence of Linux. The fact that Linux Ubuntu powers Netflix, Snapchat, Dropbox, Uber, Tesla, and International Space Station is enough to prove the might of the opensource kernel.

  • Ubuntu Podcast from the UK LoCo: S11E18 – Eighteen Summers - Ubuntu Podcast

GNOME: GTK+ 4.0, GUADEC, Fedora Atomic Workstation, and Pitivi @ GSoC

Filed under
GNOME
  • GTK+ 4.0 Likely Being Released In Spring Of 2019

    While the GTK+ 4.0 tool-kit was previously talked about for release by the end of 2018, that's now looking more like spring of 2019 when this next major version will be released.

    Happening the past week was the GUADEC 2018 GNOME developer conference and now the GTK+ team has put out their notes from the planning and discussions that happened pertaining to the next major version of the tool-kit.

    In case you missed the recent GTK news, a GTK+ 3.24 minor feature update release is being planned for this fall alongside GNOME 3.30. GTK+ 3.24 will serve as an interim release until GTK+ 4.0 is available and adopted.

  • A report from the Guadec GTK+ BoF

    The GTK+ team had a full day planning session during the BoF days at Guadec, and we had a full room, including representatives from several downstreams, not just GNOME.

  • Writing docs in a container

    In February, Matthias Clasen started a series of blog posts about Fedora Atomic Workstation (now Team Silverblue) and Flatpak. I gave it a try to see how the container would work with the documentation tools.

    The screenshot below shows the setup I used to submit this merge request. The buildah container is in the shell window on the right where git and Emacs operate in the /srv directory. At the same time on the Silverblue desktop, gitg and Yelp see the same files in the /var/srv directory.

  • Welcome Window Integration in Pitivi – Part 3

    In my last post (link), I talked about Pitivi finally getting a Welcome window. In this window, the layout of the recent projects list was pretty basic – we were only showing the name of the projects.

Linux Kernel: VKMS, CAKE, Xen and AMDVLK

Filed under
Graphics/Benchmarks
Linux
  • Virtual Kernel Mode-Setting Driver Being Added To Linux 4.19

    Linux 4.19 is shaping up to be a pretty exciting kernel release for what is expected to be the last version before Linux 5.0.

    Adding to the list of Direct Rendering Manager (DRM) improvements in Linux 4.19, VKMS has been added to Linux 4.19. The VKMS driver is the virtual kernel mode-setting effort, most recently worked on as part of this year's Google Summer of Code.

    The virtual KMS driver is a basic KMS driver exposing a CRTC/encoder/connector/plane that can be used for headless machines to run an X.Org Server or even Wayland and serves for virtual display purposes without necessa

  • Networking CAKE Is Ready For Tasting With Linux 4.19

    For those maintaining their own home-built Linux router, Linux 4.19 is going to be pretty exciting: CAKE Qdisc has been merged into net-next, making it a feature for this next kernel cycle.

  • Latest Xen Hypervisor Arrives Late, but Greatly Improved
  • AMDVLK Vulkan Driver Now Supports Direct Display Mode For VR HMDs

    The AMDVLK open-source Radeon Vulkan Linux driver has seen its latest weekly code drop that brings with it some of the extensions needed for supporting the Steam VR experience.

    The AMDVLK driver now supports VK_EXT_direct_mode_display and VK_EXT_acquire_xlib_display extensions. These extensions are needed so a Vulkan application/compositor can take exclusive control of display(s), such as the use-case for virtual reality head-mounted displays (VR HMDs) with being controlled by the SteamVR compositor. The VK_EXT_acquire_xlib_display extension is needed for acquiring control of a display that is associated with an X11 screen from the X.Org Server.

Teleconsole – Share Your Linux Terminal with Your Friends

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Software

Teleconsole is a free open source and powerful command line tool for sharing your Linux terminal session with people you trust. Your friends or team members can connect to your Linux terminal session via a command-line over SSH or via a browser over HTTPS protocol.

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MellowPlayer Integrates Music Streaming Services With Your Desktop (Cross-Platform)

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Software

The application was updated to version 3.4.0 a few days ago, receiving some important enhancements, like support for Yandex Music, and a settings page for each plugin. Only the YouTube plugin currently has its own service-dependent settings right now, which allow you to set the app to automatically mute and skip ads.

Google Play Music was also enhanced with favorites and seeking support, and the Spotify integration was fixed.

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Games: Counter-Strike: Global Offensive and More

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Gaming
  • The new Counter-Strike: Global Offensive Panorama UI is now available on Linux

    After waiting for a bit of extra time, Linux gamers can now enjoy the brand new Panorama UI update in Counter-Strike: Global Offensive.

    To activate it, you need to add "-panorama" as a launch option on Steam. Simply right right on the game in your Steam library, hit properties and then hit the set launch options button and paste it in there.

  • Action racing game 'Road Redemption' updated with improved physics

    Annoyingly, they messed up the executable naming for the Linux & Mac versions. You can launch it directly from the installed folder, but not from Steam directly until they fix this. Sadly, that means the Steam Controller doesn't work as a gamepad, even when using SC Controller the buttons were all messed up so it's keyboard only until they fix it up.

  • Fallout inspired ATOM RPG has another sizeable update

    ATOM RPG, the rough but very promising Fallout inspired game has another sizeable update that's live on Steam.

  • Kalypso Media buy the rights to the Commandos IP, a new game is coming plus updates to older titles

    Kalypso Media now officially own the rights to the Commandos IP which could mean good things for Linux gamers.

    Kalypso Media have been pretty good to Linux gamers in recent years, with them publishing Linux titles like Sudden Strike 4, Railway Empire, Dungeons 3, Tropico 6 (coming soon) and plenty more.

  • Valve have revamped the Upcoming Releases section on Steam

    Valve are continuing their Steam store updated, with the latest section to get a makeover being the Upcoming games section.

    Originally, it was a very basic list of all games to be released on Steam for whatever platform you had selected to view. Instead, it's now a "Popular Upcoming" list that takes into account pre-release interest in a game using wishlists and other data.

  • Twin-stick shooter 'NeuroVoider' is now on GOG

    Flying Oak Games first title NeuroVoider is an action packed twin-stick shooter RPG and it's now available DRM free on GOG.

Debian Joins KDE's Advisory Board

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KDE
Debian

Since the KDE Advisory Board was created in 2016, we have been encouraging more and more organizations to join it, either as patrons or as non-profit partner organizations. With Ubuntu (via Canonical) and openSUSE (via SUSE) we already had two popular Linux distributions represented in the Advisory board. They are now joined by one of the biggest and oldest purely community-driven distributions: Debian.

KDE has a long-standing and friendly relationship with Debian, and we are happy to formalize it now. Having Debian on our Advisory Board will allow us to learn from them, share our experience with them, and deepen our collaboration even further.

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Security: BGP Hijack Factory, IDN, Microsoft Windows Back Doors and Intel Defects

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Security
  • Shutting down the BGP Hijack Factory

    It started with a lengthy email to the NANOG mailing list on 25 June 2018: independent security researcher Ronald Guilmette detailed the suspicious routing activities of a company called Bitcanal, whom he referred to as a “Hijack Factory.” In his post, Ronald detailed some of the Portuguese company’s most recent BGP hijacks and asked the question: why Bitcanal’s transit providers continue to carry its BGP hijacked routes on to the global [I]nternet?

    This email kicked off a discussion that led to a concerted effort to kick this bad actor, who has hijacked with impunity for many years, off the [I]nternet.

  • Malformed Internationalized Domain Name (IDN) Leads to Discovery of Vulnerability in IDN Libraries

    The Punycode decoder is an implementation of the algorithm described in section 6.2 of RFC 3492. As it walks the input string, the Punycode decoder fills the output array with decoded code point values. The output array itself is typed to hold unsigned 32-bit integers while the Unicode code point space fits within 21 bits. This leaves a remainder of 11 unused bits that can result in the production of invalid Unicode code points if accidentally set. The vulnerability is enabled by the lack of a sanity check to ensure decoded code points are less than the Unicode code point maximum of 0x10FFFF. As such, for offending input, unchecked decoded values are copied directly to the output array and returned to the caller.

  • GandCrab ransomware adds NSA tools for faster spreading

    "It no longer needs a C2 server (it can operate in airgapped environments, for example) and it now spreads via an SMB exploit -- including on XP and Windows Server 2003 (along with modern operating systems)," Beaumont wrote in a blog post. "As far as I'm aware, this is the first ransomware true worm which spreads to XP and 2003 -- you may remember much press coverage and speculation about WannaCry and XP, but the reality was the NSA SMB exploit (EternalBlue.exe) never worked against XP targets out of the box."

  • Intel Discloses New Spectre Flaws, Pays Researchers $100K

    Intel disclosed a series of vulnerabilities on July 10, including new variants of the Spectre vulnerability the company has been dealing with since January.

    Two new Spectre variants were discovered by security researchers Vladimir Kiriansky and Carl Waldspurger, who detailed their findings in a publicly released research paper tilted, "Speculative Buffer Overflows: Attacks and Defenses."

    "We introduce Spectre1.1, a new Spectre-v1 variant that leverages speculative stores to create speculative buffer over-flows," the researchers wrote. "We also present Spectre 1.2 on CPUs that do not enforce read/write protections, speculative stores can overwrite read-only data and code pointers to breach sandboxes."

today's howtos

Filed under
HowTos

Red Hat News

Filed under
Red Hat
  • Top Indian carriers taking "open telco" approach to build future networks for new services: Red Hat

    Top Indian telecom service providers are taking “Open Telco” approach in building next-generation networks using networks functions virtualisation technology to bring flexibility to offer new services, and to prepare for 5G in coming years, according to the US-based open source solutions provider, Red Hat.

    Ben Panic, Director of Sales, Asia Pacific Region (Telecommunications) at Red Hat told ET that Indian telcos have already deployed open source technology-based solutions in the core functions of their mobile networks. “The target goal of NFV is to open, be multi-vendor, be flexible and agile,” he said.

  • Celebrating Red Hat’s 25th anniversary: How partners play an important role [Ed: reposted from Red Hat's site]

    As Red Hat celebrates 25 years, I would be remiss not to mention the role Red Hat partners have played in our company’s story. Partners have been an important multiplier for Red Hat and building our customer success. They are important to our future.

    Early endeavours in the channel

    In 2006, I joined Red Hat to expand the partner ecosystem. I’d been working in the channel since Moses was around, or at least since 1981. Although we were mainly selling direct, there was growing confidence that we could make the transformation to support a robust partner ecosystem.

  • Analysts Set Red Hat Inc (RHT) Target Price at $157.79
  • Buy Red Hat, An Attractive Cloud Computing Play

How developers can get involved with open source networking

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OSS

There have always been integration challenges with open source software, whether in pulling together Linux distributions or in mating program subsystems developed by geographically distributed communities. However, today we're seeing those challenges writ large with the rise of large ecosystems of projects in areas such as networking and cloud-native computing.

Integration was one topic of my conversation with Heather Kirksey, the VP of Community and Ecosystem Development at the Linux Foundation, recorded for the Cloudy Chat podcast. We also talked about modularity and how developers can get involved with open source networking. For the past three years, Kirksey has directed the Linux Foundation's Open Platform for Network Functions Virtualization (OPNFV), which is now part of the LF Networking Fund that's working to improve collaboration and efficiency across open source networking projects.

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More in Tux Machines

GNOME: GUADEC, GSoC, GitLab

  • Petr Kovar: GUADEC 2018
    Back from GUADEC, held in the beautiful Andalusian city of Almería, Spain, from 6th July through 11th July, 2018, I wanted to share a few notes wrt documentation and localization activities at the conference and during the traditional post-conference hacking days.
  • GUADEC18 Developer Center BoF Part 1: The Developer Experience
    At this year’s GUADEC lightning talks I spontaneously announced and arranged a Developer Center BoF (Birds of a Feather) session. We were six attendants who met together Wednesday the 11th September. I think it is important that we communicate our doings to the rest of the community, so I will make a few short blog posts based on our meeting notes and my own thoughts on the subject.
  • GSoC 2018: Safe Shared Access to Cairo Image Surfaces
    I’m working on librsvg, a GNOME SVG rendering library, to port the SVG filter effects and related infrastructure from C to Rust. Librsvg uses Cairo, a 2D graphics library, for most of its drawing operations. Cairo can draw to a number of different surfaces like XCB and Xlib windows and pixmaps, PDF documents and PostScript files.
  • Have you ever commented while angry?
    Here’s my proposal (feature request for GitLab / irssi?

OSS: Apache Cassandra, Jib,WSO2 and More

  • Apache Cassandra at 10: Making a community believe in NoSQL
    Ten years ago this month, when Lehman Brothers was still just about in business and the term NoSQL wasn't even widely known, let alone an irritant, Facebook engineers open-sourced a distributed database system named Cassandra. Back then, the idea that huge numbers of companies would need a scalable database was almost laughable – and that grip of traditional relational database systems is reflected in the mythical moniker given to what would become one of the first of many databases designed to run on a cluster of machines. Named after the Greek figure who was cursed to utter the truth but was never believed, Cassandra might seem an odd choice for a system whose raison d'être is believability – but it delivered a nice dig at the stalwarts of the RDBMS world… and their trust in a false Oracle.
  • Google Launches Jib, Automated Container Packaging for Java Apps
    Google has released software that could automate the packaging of a Java program so that it can be run in the cloud-native environment. Jib is an open-source Java “containerizer,” one that handles all the steps of packaging your application into a container image, according to Appu Goundan and Qingyang Chen, two Google engineers who co-wrote a blog post announcing the new technology. Created over two decades ago at Sun Microsystems, Java was introduced as a “write once, run anywhere” programming language, where all the code would be packaged in a JAR file, and run by a Java Virtual Machine on any platform. The requirements for running code anywhere have expanded with the introduction of containerization, however. Few shops are Java-only these days, and many are turning to containerization for true application portability,
  • WSO2 Summer 2018 Release Brings Agility to Secure Microservices Integration
  • New Operations in Mexico Extend WSO2’s Reach Across Latin America
  • How Open Source Became The Default Business Model For Software
  • 10 Best Kodi Addons You Should Install In 2018 | Legal Addons
    Kodi is one of the most popular media player software which enables you to access videos, music, and pictures via the internet or local storage on a host of platforms. Managed by XBMC foundation, Kodi is an open source software. However, its reputation has been soiled by labeling it as a piracy bearer, and that is why many ask “Is Kodi legal?” You can read more about Kodi and whether it is legal or not here.
  • Summer of Code: Plan for the grand finale
    To get that done, I have to polish up my smack-openpgp branch which has grown to a size of 7000 loc. There are still some minor quirks, but Florian recommended to focus on the big picture instead of spending too much time on small details and edge cases. I also have to release pgpainless to maven central and establish some kind of release cycle. It will be a future challenge for me personally to synchronize the releases of smack-openpgp and pgpainless.
  • Collaborative World Shaping: Why Open-Source Tech Matters in a For-Impact Future
    How many lives could be saved if there was a way to vastly cut down inefficiency and through bureaucracy, by problem solving at a global scale? Could technology help us reach more individuals in need more meaningfully, substantially helping people affected by disasters – in less time? The technology is already out there – but not enough people know about it. In 2017, Hurricane Irma—the strongest hurricane ever recorded in the Atlantic Ocean—made landfall; with widespread, “catastrophic” damage, disaster relief organizations were overwhelmed. “A lot of traditional means of crisis response are very top down, and they didn’t really kick in — we saw headlines about how the Red Cross didn’t show up to shelters,” said Greg Bloom, a community organizer and civic hacker who knew he had to step in to assist.
  • The First Open-Source Smart Contract Platform to be Started by Rootstock
    RSK Labs, formerly known as Rootstock, an Argentinian startup building the first open-source smart contract platform with a 2-way peg to Bitcoin.RSK Labs CEO Diego Gutiérrez Zaldívar on Bitcoin Smart Contracts Sidechain and Crypto Industry Challenges. Even though at this point of time the 2-way peg security of the RSK blockchain is still relying on a group of third parties called ‘Federation’, in the future the developers promise to bring a “trustless” automatic peg. How fast this happens to some degree depends on the overall miners support. The company says its goal is to add value and functionality to the Bitcoin ecosystem by enabling Ethereum-like smart-contracts, near instant payments and higher-scalability, and this past January after almost two years of development its mainnet dubbed Bamboo was finally launched.
  • Creality’s Ender 3 3D Printer is Now Fully Open Source
    Creality3D, founded in 2014, is a 3D printer manufacturer based in China, offering more than 20 products. Their popular Ender 3 was recently voted “Best 3D Printer Under $200” by All3DP (review here). Now, the company is making their most popular 3D printer, the Ender 3, completely open source. This makes it the first Open Source Hardware Association certified 3D printer in China. This means not just a few files have been shared, but all hardware, CAD files, board schematics and firmware files are available. You can find the updated versions on the company’s GitHub page.
  • Charité's researchers integrate open-source platform into the 'Human Brain Project'
    Universitätsmedizin Berlin and the Berlin Institute of Health (BIH) are pleased to announce that 'The Virtual Brain' neuroinformatics platform has joined the EU's Flagship 'Human Brain Project'. With financial support from the EU's Horizon 2020 research and innovation program, Charité's researchers are now integrating their open-source platform into the 'Human Brain Project'. This will provide participating researchers with a research infrastructure that promotes efficiency and reproducibility. The researchers will focus on refining the theoretical underpinnings of the computer models used, developing efficient simulation technology, and working on neuroinformatics solutions that enhance the reproducibility of studies.

Kernel and Graphics: PDS, VKMS and Nouveau

  • PDS 0.98s release
    PDS 0.98s is released with the following changes 1. Fix compilation issue on raspberry pi. 2. Minor rework and optimization on balance code path. 3. Fix wrong nr_max_tries in migrate_pending_tasks. This is mainly a bug fix and minor optimization release for 4.17. The rework of balance code doesn't go well, it actually make more overhead than current implement. Another rework which based on current implement is still on going, hopefully be included in next release.
  • PDS-MQ CPU Scheduler Revised For The Linux 4.17 Kernel With Minor Optimizations
    Alfred Chen announced this week the release of PDS-mq 0.98s, his latest patch-set of this CPU scheduler against the Linux 4.17 upstream code-base and includes minor optimization work and bug fixes. The PDS scheduler stands for the "Priority and Deadline based Skiplist multiple queue scheduler" that is derived from Con Kolivas' former BFS scheduler with Variable Run Queue (VRQ) support. PDS design principles are to be a simple CPU process scheduler yet efficient and scalable. PDS-mq differs from Con Kolivas' current MuQSS scheduler.
  • Add infrastructure for Vblank and page flip events in vkms simulated by hrtimer
    Since the beginning of May 2018, I have been diving into the DRM subsystem. In the beginning, nothing made sense to me, and I had to fight hard to understand how things work. Fortunately, I was not alone, and I had great support from Gustavo Padovan, Daniel Vetter, Haneen Mohammed, and the entire community. Recently, I finally delivered a new feature for VKMS: the infrastructure for Vblank and page flip events. At this moment, VKMS have regular Vblank events simulated through hrtimers (see drm-misc-next), which is a feature required by VKMS to mimic real hardware [6]. The development approach was entirely driven by the tests provided by IGT, more specifically the kms_flip. I modified IGT to read a module name via command line and force the use of it, instead of using only the modules defined in the code (patch submitted to IGT, see [1]). With this modification in the IGT, my development process to add a Vblank infrastructure to VKMS had three main steps as Figure 1 describes.
  • The State Of The VKMS Driver, Preparations For vBlank & Page Flip Events
    One of the exciting additions to look forward to with the upcoming Linux 4.19 kernel cycle is the virtual "VKMS" kernel mode-setting driver. The driver is still a work-in-progress, but multiple developers are working on it.
  • NIR Continues To Be Prepped For OpenCL Support
    Longtime Nouveau contributor Karol Herbst who joined Red Hat several months ago has been working on Nouveau NIR support as stepping towards SPIR-V/compute support and this summer the work very much remains an active target.
  • Nouveau Gallium3D Moves Closer Towards OpenGL 4.5 Compliance
    While the RadeonSI and Intel i965 Mesa drivers have been at OpenGL 4.5 compliance for a while now, the Nouveau "NVC0" Gallium3D driver has been bound to OpenGL 4.3 officially. This Nouveau Gallium3D driver for NVIDIA "Fermi" graphics hardware and newer has effectively supported all of the OpenGL 4.4/4.5 extensions, but not officially. Originally the NVC0 problem for OpenGL 4.4 and newer was the requirement of passing the OpenGL Conformance Test Suite (CTS), which at first wasn't open-source. But now The Khronos Group has made it available to everyone as open-source. Additionally, the proper legal wrangling is in place so the Nouveau driver could become a conforming Khronos adopter under the X.Org Foundation without any associated costs/fees with Nouveau being purely open-source and primarily considered a community driver.

DistroWatch The Best Website For Distro Hoppers

The DistroWatch features release announcements of new versions of hundreds of Linux and other distributions. It does host reviews of distros, podcasts, and newsletters. DistroWatch first published by Ladislav Bodnar, the founder, and maintainer, on May 31, 2001. DistroWatch initially focused on Linux distributions. But later based on user requests, it went on adding different flavors of operating systems like BSD family, Android x86, Oracle Solaris, MINIX, and Haiku etc. The DistroWatch presents detailed information at one place in a very convenient manner. At the time of writing this article, the DistroWatch hosted information of more than 300 active distributions (referring the list of distros populated under drop-down feature on the first page of the DistroWatch) and more than hundred in queue. It is said that the DistroWatch lives out of advertising and donation. LinuxCD.org is the first to advertise on the DistroWatch site. Read more