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today's leftovers

Submitted by Roy Schestowitz on Saturday 14th of November 2020 12:37:01 AM Filed under
Misc
  • Mesa 21.0 RadeonSI Merges Buffer Modifier Support - Phoronix

    The long-standing patches by Bas Nieuwenhuizen on implementing DMA-BUF modifier support for the RadeonSI code within Mesa has now been merged for next quarter's Mesa 21.0 feature release.

    With Linux 5.11 bringing the buffer modifier support on the kernel side for GFX9/Vega and newer, the code merged today into Mesa 21.0 enables the user-space API and makes use of the modifier capabilities within RadeonSI Gallium3D for the recent AMD Radeon graphics cards. This follows Intel's Linux graphics stack that has benefited from modifier support for a while.

  • Dave Airlie (blogspot): lavapipe: a *software* swrast vulkan layer FAQ

    I had some requirements for writing a vulkan software rasterizer within the Mesa project. I took some time to look at the options and realised that just writing a vulkan layer on top of gallium's llvmpipe would be a good answer for this problem. However in doing so I knew people would ask why this wouldn't work for a hardware driver.

    [...]

    Software rasterizers are a very different proposition from an overhead point of view than real hardware. CPU rasterization is pretty heavy on the CPU load, so nearly always 90% of your CPU time will be in the rasterizer and fragment shader. Having some minor CPU overheads around command submission and queuing isn't going to matter in the overall profile of the user application. CPU rasterization is already slow, the Vulkan->gallium translation overhead isn't going to be the reason for making it much slower.

    For real HW drivers which are meant to record their own command buffers in the GPU domain and submit them direct to the hw, adding in a CPU layer that just copies the command buffer data is a massive overhead and one that can't easily be removed from the lavapipe layer.

    The lavapipe execution context is also pretty horrible, it has to connect all the state pieces like shaders etc to the gallium context, and disconnect them all at the end of each command buffer. There is only one command submission queue, one context to be used. A lot of hardware exposes more queues etc that this will never model.

    [...]

    Can this make my non-Vulkan capable hw run Vulkan?

    No. If the hardware can't do virtual memory properly, or expose features for vulkan this can't be fixed with a software layer that just introduces overhead.

  • Many More AMD Ryzen 5000 Series "Zen 3" Linux Benchmarks

    Over the past week we have published our Linux performance reviews of the Ryzen 5 5600X, Ryzen 7 5800X, and Ryzen 9 5900X + 5950X "Zen 3" processors. For as much data that has been available in those reviews, here is even more data accumulating thanks to the open-source Phoronix Test Suite and OpenBenchmarking.org. Thousands of data points are building up for these very exciting AMD Zen 3 desktop processors.

    Since the initial reviews on Phoronix I continue running more benchmarks on the AMD Zen 3 CPUs on Ubuntu 20.10 and in other hardware/software configurations -- both for future Phoronix articles and also just running more benchmarks to explore more areas of these new AMD CPUs. All of that public benchmarking funnels into OpenBenchmarking.org. Other sites using the Phoronix Test Suite and opting to upload their results like L1 Techs to OpenBenchmarking.org and other early Ryzen 5000 owners lucky enough to buy the CPUs already have also begun uploading their results as well.

  • openSUSE Tumbleweed – Review of the week 2020/46 – Dominique a.k.a. DimStar (Dim*)

    Dear Tumbleweed users and hackers,

    Overall, week 46 was good. A steady flow of new snapshots, staging projects that keep on moving – and we delivered 6 snapshots during this week (1105, 1106, 1107, 1108, 1110, and 1111).

  • Universal SMARC carrier launches with Elkhart Lake module

    Data Modul announced a universal “eDM-CB-SM-IPCS” carrier for Arm and x86 SMARC modules plus a Linux-ready “eDM-SMX-EL” SMARC module featuring Intel’s Elkhart Lake Atom x6000E.

    One of the benefits of standardized compute module form factors such as SMARC is that manufacturers can easily upgrade to a faster new module using the same basic design and vendor. In some cases, there is the potential to switch processor families and even architectures. Last year, for example, MSC launched a universal SimpleFlex carrier for SMARC modules that supports i.MX6, i.MX8/M/Mini, Zynq UltraScale+, and Intel Apollo Lake. Now, Data Modul has announced its own universal SMARC carrier called the eDM-CB-SM-IPCS plus an Elkhart Lake based eDM-SMX-EL SMARC module that runs on it (see farther below).

  • PeaZip 7.5.0

    PeaZip is an open source file and archive manager. It's freeware and free of charge for any use. PeaZip can extract most of archive formats both from Windows and Unix worlds, ranging from mainstream 7Z, RAR, TAR and ZIP to experimental ones like PAQ/LPAQ family, currently the most powerful compressor available.

  • New Releases: Tor 0.3.5.12, 0.4.3.7, and 0.4.4.6

    We have a new stable release today. If you build Tor from source, you can download the source code for 0.4.4.6 on the download page. Packages should be available within the next several weeks, with a new Tor Browser likely next week.

    We've also released 0.3.5.12 (changelog) and 0.4.3.7 (changelog) today. You can find the source for them at https://dist.torproject.org/, along with older releases.

  • Unix/Linux Bash: Critical security hole uncovered | ZDNet

    By itself, this is one of those security holes where an attacker would already need to have a high level of system access to cause damage. Unfortunately, as Red Hat's security team put it, "Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue."

  • Cyber security centre warns of RAT targeting healthcare sector

    The Australian Cyber Security Centre has issued a warning to the health sector, saying it has seen increased targeting by attackers using the SDBBot remote access trojan.

»

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

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