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LLVM 7.0.0 Released

Filed under
BSD
  • LLVM 7.0.0 released

    The release contains the work on trunk up to SVN revision 338536 plus work on the release branch. It is the result of the community's work over the past six months, including: function multiversioning in Clang with the 'target' attribute for ELF-based x86/x86_64 targets, improved PCH support in clang-cl, preliminary DWARF v5 support, basic support for OpenMP 4.5 offloading to NVPTX, OpenCL C++ support, MSan, X-Ray and libFuzzer support for FreeBSD, early UBSan, X-Ray and libFuzzer support for OpenBSD, UBSan checks for implicit conversions, many long-tail compatibility issues fixed in lld which is now production ready for ELF, COFF and MinGW, new tools llvm-exegesis, llvm-mca and diagtool. And as usual, many optimizations, improved diagnostics, and bug fixes.

  • LLVM 7.0 Released: Better CPU Support, AMDGPU Vega 20; Clang 7.0 Gets FMV & OpenCL C++

    As anticipated, LLVM release manager Hans Wennborg announced the official availability today of LLVM 7.0 compiler stack as well as associated sub-projects including the Clang 7.0 C/C++ compiler front-end, Compiler-RT, libc++, libunwind, LLDB, and others.

    There is a lot of LLVM improvements ranging from CPU improvements for many different architectures, Vega 20 support among many other AMDGPU back-end improvements, the new machine code analyzer utility, and more. The notable Clang C/C++ compiler has picked up support for function multi-versioning (FMV), initial OpenCL C++ support, and many other additions. See my LLVM 7.0 / Clang 7.0 feature overview for more details on the changes with this six-month open-source compiler stack update.

BSD: OpenBSD/NetBSD on FreeBSD and Upcoming OpenZFS Developer Summit 2018

Filed under
BSD
  • OpenBSD/NetBSD on FreeBSD using grub2-bhyve

    When I was writing a blog post about the process title, I needed a couple of virtual machines with OpenBSD, NetBSD, and Ubuntu. Before that day I mainly used FreeBSD and Windows with bhyve. I spent some time trying to set up an OpenBSD using bhyve and UEFI as described here. I had numerous problems trying to use it, and this was the day I discovered the grub2-bhyve tool, and I love it!

    The grub2-bhyve allows you to load a kernel using GRUB bootloader. GRUB supports most of the operating systems with a standard configuration, so exactly the same method can be used to install NetBSD or Ubuntu. [...]

  • OpenZFS Developer Summit 2018

    The sixth annual OpenZFS Developer Summit took place September 10th and 11th in San Francisco, California with an expanded focus on non-technical topics like community development and cross-project coordination. It also marked the “light at the end of the tunnel” status of several long-term OpenZFS features, notably dRAID, the distributed spare technology originally developed by Intel. [...]

LLVM 7.0.0 is Ready

Filed under
Development
BSD
  • [llvm-dev] [7.0.0 Release] The final tag is in

    The final version of 7.0.0 has been tagged from the branch at r342370. It is identical to rc3 modulo release notes and docs changes.

  • LLVM 7.0 Is Ready For Release

    The LLVM/Clang 7.0 release had been running a bit behind schedule and warranted a third release candidate, but this week LLVM 7.0.0 is now ready to ship.

    Release manager Hans Wennborg announced minutes ago on the mailing list that the 7.0.0 release has been tagged in their source tree. This ends up being the same as last week's 7.0-RC3 except for release notes and documentation updates.

  • LLVM Developers Still Discussing SPIR-V Support Within Clang

    One of the features that didn't materialize for LLVM / Clang 7.0 is the SPIR-V support within the compiler toolchain.

    While there has been a SPIR-V / LLVM translator out-of-tree and various developers at different vendors have been discussing for months the prospects of adding SPIR-V intermediate representation support to LLVM/Clang, it has yet to materialize.

    The latest developer discussion is to have a roundtable talk on the SPIR-V integration at the 2018 LLVM Developers' Meeting. This year the LLVM Developers' Meeting is happening at the San Jose Convention Center from 17 to 18 October.

Doing One Thing, Well: The UNIX Philosophy

Filed under
OS
GNU
BSD

The Unix operating system has been around for decades, and it and its lookalikes (mainly Linux) are a critical part of the computing world. Apple’s operating system, macOS, is Unix-based, as are Solaris and BSD. Even if you’ve never directly used one of these operating systems, at least two-thirds of all websites are served by Unix or Unix-like software. And, if you’ve ever picked up a smart phone, chances are it was running either a Unix variant or the Linux-driven Android. The core reason that Unix has been so ubiquitous isn’t its accessibility, or cost, or user interface design, although these things helped. The root cause of its success is its design philosophy.

Good design is crucial for success. Whether that’s good design of a piece of software, infrastructure like a railroad or power grid, or even something relatively simple like a flag, without good design your project is essentially doomed. Although you might be able to build a workable one-off electronics project that’s a rat’s nest of wires, or a prototype of something that gets the job done but isn’t user-friendly or scalable, for a large-scale project a set of good design principles from the start is key.

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Compilers: LLVM and compiler as a shared library

Filed under
Development
GNU
BSD
  • LLVM 7.0 RC3 Released - The Last Release Candidate

    While only two release candidates were on the schedule for LLVM 7.0, release manager Hans Wennborg today opted for a third RC that he intends to be the final test version before officially releasing the LLVM 7.0.0 collection.

    LLVM 7.0 RC3 was released this morning as the last release candidate and incorporates the recent bug fixing that's went on since the RC2 release at the end of August. Assuming no serious issues are uncovered, this version should be very close to LLVM 7.0.0 final.

  • A Look At The Features Coming With LLVM 7.0 & Clang 7.0

    It's running a few days late, but the LLVM 7.0 release along with sub-projects like Clang 7.0 should be released very soon. Here is a look at some of the features coming to this six-month compiler infrastructure update.

    Below is a look at the highlights for LLVM 7.0. Overall it's been another busy half-year with many additions to the AMDGPU back-end, the new LLVM MCA utility, continued work on the Spectre front, OpenCL C++ support is introduced, function multi-versioning (FMV) finally for Clang, OpenMP 4.5 offloading to NVIDIA NVPTX, and many other compiler infrastructure improvements.

  • The compiler as a shared library

    Since times immemorial, compilers have been run as standalone batch processes. If you have 50 files to compile, then you invoke the compiler 50 times, once on each file. Since each compilation is independent of all others, the work can be parallelised perfectly. This seems like a simple and optimal solution.
    But, as is commonly the case, this is not the whole truth. When compiling code, there are many subtasks that are common to each individual compilation and this causes a lot of duplication of effort. Perhaps the best known case of this are C++ templates. They are parsed and codegenerated for each file that uses them yielding in the same code in dozens of files. Then the linker comes along and throws all but one of them away. There are a bunch of other issues which are discussed in this video from LLVM developer's conference:

BSD Developers and News

Filed under
BSD
  • Pricing Shifts between CreateSpace, IngramSpark, and KDP Print

    Before I go all stabby, though, let’s gather all the information. For an apples-to-apples comparison, I’m setting the CreateSpace price of Spilled Mirovar to $6.99, same as KDP Print and IngramSpark. We really need to make two comparisons. CreateSpace’s Expanded Distribution (CSED) is analogous to IngramSpark, and CreateSpace’s Amazon service is migrating to KDP Print.

  • FreeBSD lockless algorithm - seq

    Those days locking algorithms are critical for operating systems, especially in a multi-threaded world. With time it turns out that classical locks, like mutex, are performance costly. Even when we are using techniques like having reads and writes mutex, synchronizing the state between CPUs can be costly. To optimize some cases, the lockless algorithm started to be used.

    There are multiple places in the kernel where we need to read some variables very often, but there is a small number of cases when we write to them. For such cases, the seq interface was created. [...]

  • How does the process title works?

    Let's start by defining what the title of a process is - in this article, we will understand the name reported by ps(1)/top(1). When we are creating a new process using fork(2) the process inherits the name from its parent. In the scenario when we call exec(2) function we also pass the list of the arguments for a process, which will be treated as a process title. What if we would like to change the title of the process when it's running? It turns out that many operating systems do it in a different way. In this article we will discuss how open source operating systems like FreeBSD, Linux, OpenBSD, NetBSD, and DragonFlyBSD do it.

  • OpenBSD on disk images

    Users are able to declare disk images as ‘raw’ or ‘qcow2’ using either vmctl and vm.conf. The default disk image format is ‘raw’ if not specified.

BSD: LLVM/Clang and Fuzzing the OpenBSD Kernel

Filed under
BSD
  • LLVM/Clang Gets Plumbed For Kernel Memory Sanitizer

    The latest "sanitizer" worked on by Google's developers for the LLVM/Clang compiler infrastructure is a Kernel Memory Sanitizer (KMSAN).

    KMSAN is a special sanitizer compared to the conventional Memory Sanitizer pass that is just focused on kernel memory. Currently this new LLVM pass just supports the Linux x86_64 kernel. Those unfamiliar with the existing MemorySanitizer functionality that already lives within LLVM can see the documentation on this pass.

  • Fuzzing the OpenBSD Kernel

    Anton Lindqvist (anton@) gave a talk at BSD Users Stockholm Meetup #3 on the kernel coverage tracing kit he committed recently. Slides are now available via the OpenBSD Events and Papers page.

NetBSD 7.2 Released

Filed under
BSD
  • NetBSD 7.2 released (August 29, 2018)

    The NetBSD Project is pleased to announce NetBSD 7.2, the second feature update of the NetBSD 7 release branch. It represents a selected subset of fixes deemed important for security or stability reasons, as well as new features and enhancements.

  • NetBSD 7.2 Released - Backports USB 3.0 Support, Raspberry Pi 3 Compatibility

    While NetBSD 8.0 was released in July with new features like initial USB 3.0 support and UEFI boot-loader support for x86 64-bit hardware, for those not wanting to jump to 8.0 from the 7 series can now enjoy NetBSD 7.2.

    NetBSD 7.2 is a feature update to NetBSD 7 for those not yet or unable to migrate to NetBSD 8.0. NetBSD 7.2 back-ports support for USB 3.0 hardware, enhances the Linux emulation subsystem, provides support for newer Intel WiFi/WLAN cards, adds Raspberry Pi 3 support, offers various USB improvements, and has various bug fixes and stability improvements.

  • NetBSD 7.2 Branch Update Release Brings USB 3.0 and Raspberry Pi 3 Support

    The NetBSD Project has released NetBSD 7.2, which is the second feature update of the NetBSD 7 release branch. This release brings a subset of fixes that were deemed important to security or stability reasons, and several new features and overall enhancements.

    NetBSD is a free and highly portable Unix-like operating system, and is entirely Open Source. It is available for many platforms such as 64-bit x86 servers, to various embedded ARM and MIPS based devices (SoCs).

A Look At DragonFlyBSD's Kernel Tuning Performance On The AMD Threadripper 2990WX

Filed under
Graphics/Benchmarks
BSD

Last week I posted some initial tests and benchmarks of DragonFlyBSD/FreeBSD on the AMD Threadripper 2990WX. While that went well and the BSDs scale with this 32-core / 64-thread processor better than Windows, lead DragonFly developer Matthew Dillon had picked up a 2990WX system and has been tuning the kernel ever since. Here are some benchmarks looking at some of his recent optimizations.

Hours after that BSD Threadripper testing ended last week, Matthew Dillon landed some more performance tuning/optimizations to benefit the Threadripper 2990WX design. Here are some benchmarks of that original 2990WX support on DragonFlyBSD 5.3-DEVELOPMENT compared to the later daily snapshot.

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BSD: OpenBSD and KDE-FreeBSD

Filed under
BSD
  • RSS Feed available for OpenBSD-current special instructions

    I wrote a script generating a RSS file from the content of the page https://www.openbsd.org/faq/current.html

  • Out with the Old ..

       KDE4 ports will be removed from FreeBSD ports on December 31st, 2018

    [...]

    As for KDE4 itself: there haven’t been any upstream KDE4 releases since Applications 17.08.3, and Qt4 upon which it depends is EOL since 2015. The latest KDE Plasma desktop has been available in the official ports tree for over four months (and has been in use by users of Area51 for much much longer).

    So, given that there is a viable upgrade path (although, truth be told, you’ll probably have to re-configure KMail and get used to Falkon), we’ve decided to put a four month deprecation period on all the KDE4 ports. They will be removed at the end of this year, which will free up some maintainence time for chasing the steady stream of updates from the KDE community.

  • KDE4 Being Dropped From FreeBSD At The End Of The Year

    With KDE4 not having seen an upstream release in years and the old KDE4 code beginning to break under newer C++ compilers, the KDE-FreeBSD team has announced a four-month deprecation period after which they are dropping the KDE4 ports from the operating system.

    On 31 December 2018 is when the FreeBSD maintainers of these older KDE packages plan to drop the KDE4 packages from their tree.

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'We expect this is the bottom' in enterprise growth: Red Hat CEO

OSS Leftovers

  • AxonIQ Launches New Open Source Server
    AxonIQ, the company behind the open source Axon Framework, launches Axon 4.0 the open, integrated development and operations tool for Microservices and Event Sourcing on the JVM.
  • L10N Report: September Edition
  • Tidelift surpasses $1M to pay open source software maintainers
    Tidelift announced that it has surpassed one million dollars committed via its platform to pay open source software maintainers to provide professional assurances for their projects, as momentum behind this new approach to professional open source continues to build. Over 100 packages are already on the Tidelift platform, with maintainers getting paid to provide support for their packages through the Tidelift Subscription. Top packages featured include Vue, Material-UI, Babel, Gulp, Fabric, Active Admin, Doctrine, and StandardJS. With Tidelift, software development teams receive assurances around maintenance, security, and licensing from a single source. By bringing together maintainers with a global market of customers, Tidelift is helping make open source work better for everyone.
  • Artifex and First National Title Insurance Company Reach Settlement Over MuPDF Open Source Dispute
    Artifex Software, Inc. and First National Title Insurance Company announced today a confidential agreement to settle their legal dispute. Case No. 4: 18-cv-00503-SBA, filed by Artifex in the United States District Court for the Northern District of California, concerned the use of Artifex's open source software MuPDF under the GNU Affero General Public License and the GNU General Public License. While the parties had their differences in the interpretation of the open source licenses, the companies were able to reach an amicable resolution based on their mutual respect for and recognition of copyright protection and the open source philosophy. Terms of the settlement remain confidential.

EEE, Entryism and Openwashing

  • New Linux distro specifically designed for Windows comes to the Microsoft Store [Ed: WLinux or Whitewater Foundry not the first time people exploit Microsoft to put a price tag on FOSS such as LibreOffice. Microsoft is doing a fine job sabotaging the GNU/Linux 'ecosystem'.]
    WLinux is based on Debian, and the developer, Whitewater Foundry, claims their custom distro will also allow faster patching of security and compatibility issues that appear from time to time between upstream distros and WSL. [...] In return for saving developers time Whitewater Foundry is charging $19.99 (though the app is currently 50% off and the distribution can be downloaded from Github for free).
  • Open source dev gets Win32 apps running on Xbox One [Ed: Running blobs on two DRM platforms does not make you "Open source dev"]
  • Building Blocks of Secure Development: How to Make Open Source Work for You [Ed: Veracode self-promotion in "webinar" form, badmouthing FOSS to push their proprietary things. They work with Microsoft.]
  • SD Times open source project of the week: TonY [Ed: Openwashing of a surveillance operation at Microsoft]
    Unsatisfied with the available solutions for connecting the analytics-generating power of their TensorFlow machine learning implementations with the scalable data computation and storage capabilities of their Apache Hadoop clusters, developers at LinkedIn decided that they’d take matters into their own hands with the development of this week’s highlighted project, TonY.
  • Open Source: Automating Release Notes in Github [Ed: The New York Times is still propping up Microsoft hosting]
  • Opendesk launches augmented-reality shopping for its open-source furniture [Ed: Calling furniture "open"]
    Opendesk customers can now use augmented reality to see how the furniture brand's pieces look in their homes before ordering them from local makers. The augmented-reality (AR) experience launched with the arrival of Apple's iOS 12 operating system this week. It enables customers to use their smartphones to view some of Opendesk's furniture superimposed on the room in front of them.
  • Open Source Testing Startup Cypress Leaves Beta With Thousands of Users, Launches Paid Plans [Ed: This is not Open Source; they misuse the label and even put dashes ("open-source") because they know they're faking it.]
    Cypress.io‘s CEO Drew Lanham explains that the startup’s tool is software created by developers, for developers. The company was founded in 2014 by technologist Brian Mann, after observing that while computing and application development had changed drastically over the past decade, software testing had not. Large companies now release thousands of software updates a year, often on a daily basis across their organization. Technology teams aim to move rapidly, iterating on an agile basis and working in parallel so they can sync their code together even faster. But, as Lanham explains, the testing software out there was far outdated for these agile processes.
  • Kindred Introduces SenseAct, the First Reinforcement Learning Open-Source Toolkit for Physical Robots [Ed: Kindred or SenseAct not actually FOSS; but they sure try to make it seem that way, by focusing on a toolkit.]

Top Linux Distros for Software Developers

A major factor in the choice of Linux distro is your personal preference. You may try one of the most popular Linux distros but find that you prefer one that’s less often used. Your experience with Linux will also factor into which distro is suited to you. With the benefits Linux can offer — including flexibility, stability, and support — it’s worth evaluating your options. Read more