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My Name is Brian and I Build Supercomputers in My Spare Time

Filed under
Linux
Server
Ubuntu

The NUCs run Ubuntu server and are storage hosts and the primary interface to the external world. The system has 8x Parallella boards and a shared gigabit Ethernet switch, giving a peak performance of around 208 GFLOPs.

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More in Tux Machines

Linux (Kernel): Clear Linux, AMD Radeon Graphics and Raspberry Pi 4

  • One Of Clear Linux's Kernel Patches To Help With Boot Time Proposed For Upstreaming

    Besides Clear Linux delivering often leading x86_64 Linux performance at run-time, when it comes to boot performance it has also been at the forefront -- in some configurations, can boot in 300 ms. Intel has invested significantly in ensuring Clear Linux boots as fast as possible for when running in the cloud or on containers in order to respond to increased demand as quickly as possible as well as for use-cases like Clear Linux within automobiles where they need to get automobile cameras active within two seconds of power on. One of their many kernel patches could be on its way to the mainline kernel.

  • Running The Linux 5.6 Kernel With AMD Radeon Graphics

    Now hitting about mid-way through the Linux 5.6 kernel with early fallout having been addressed, we've been ramping up our testing/benchmarking of this next major kernel release. Here is our initial experience with the AMDGPU driver on Linux 5.6. Linux 5.6 brings many new features As it concerns the AMDGPU kernel driver, there is reset support for Renoir and Navi, initial bring-up for AMD Pollock, HDCP 2.x support, the kernel bits for Vulkan timeline semaphore support, DP MST DSC compression, and other fixes and code improvements.

  • VC4 DRM Driver Gets Patched For BCM2711 / Raspberry Pi 4 Support

    While the Linux 5.5 kernel landed Broadcom BCM2711 SoC and Raspberry Pi 4 enablement, one of the loose ends has been getting the open-source "VC4" DRM driver wired up for the display hardware on this latest Raspberry Pi. Patches are now pending for VC4 DRM to provide that display support and could potentially see it mainlined for Linux 5.7.

Intel: HEVC, ANV Vulkan Driver, Linux 5.7 and New Security Hole

  • Intel Adds VA-API Acceleration For HEVC REXT To FFmpeg

    Intel open-source developers have contributed support for VA-API acceleration of HEVC REXT "Range Extensions" content with the widely-used FFmpeg library. HEVC Range Extensions are extensions to H.265 geared for areas of content distribution, medical imaging, still imaging, and more. Among the changes with HEVC REXT are supporting 4:2:2 and 4:4:4 chroma sampling formats. HEVC Range Extensions are laid out in much more detail in this IEEE.org paper.

  • Intel Boosts Gen7 GPU Vulkan Compute Performance By ~330% For Geekbench

    Intel's open-source "ANV" Vulkan driver for Linux doesn't see much attention for pre-Broadwell hardware but today it saw a big improvement for Vulkan compute on aging Gen7 Ivybridge/Haswell era hardware. Jason Ekstrand, the lead developer of the Intel ANV Vulkan driver, discovered that in their driver's pipeline code the data cache functionality would end up being disabled when a shader was pulled out of the pipeline cache. For Broadwell/Gen8+ the data cache bit was being ignored but this oversight ended up having huge implications for Gen7 Intel graphics hardware (Ivybridge/Haswell) as the oldest supported by Intel's Vulkan driver.

  • Intel Has Accumulated 400+ Graphics Driver Patches So Far For Linux 5.7

    Intel just sent out their initial pull request of new feature changes/improvements to DRM-Next that in turn is for landing in about one month's time when the Linux 5.7 merge window kicks off. With taking longer than usual to send in their first round of feature updates, this first of several pull requests already amounts to over 400 patches. While it is a big pull request given the extra time for patches to accumulate, there aren't too many user-facing changes. Though there is a lot of enablement work for Tiger Lake as well as continuing Gen11 Ice Lake and Elkhart Lake work. For Ice Lake / Elkhart Lake there are a number of driver workarounds added. For Gen12 / Tiger Lake there are workarounds, display fixes, RPS is re-enabled, and other work.

  • Intel KVM Virtualization Hit By Vulnerability Over Unfinished Code

    At least not another hardware vulnerability, but CVE-2020-2732 appears to stem from unfinished code within the Intel VMX code for the Linux kernel's Kernel-based Virtual Machine (KVM) support. CVE-2020-2732 as of writing isn't yet public but we've been closely monitoring it since seeing a peculiar patch series earlier today and not finding much information on it.

Hardware and Devices for GNU/Linux

Screenshots/Audiocasts/Shows: Netrunner 20.01, Linux Headlines, This Week in Linux and Pandas

  • Netrunner 20.01 – Twenty Run Through

    In this video, we are looking at Netrunner 20.01 – Twenty.

  • 2020-02-25 | Linux Headlines

    Manjaro hits version 19, Firefox starts rolling out DNS over HTTPS by default in the US, Puppet releases version 2 of Bolt, and Mirantis commits to the future of Docker Swarm.

  • This Week in Linux 94: Mesa 20, PipeWire, Linux Be Scary, MyPaint, GTK, Microsoft Defender

    On this episode of This Week in Linux, we got some new releases from core projects like Mesa & PipeWire and we also got some App News from MyPaint, GTK and a new convergent apps project called Maui. Then we’ll check out some distro news regarding the Untangle Firewall and some Red Hat news about CoreOS Container Linux. Later in the show, we’ll cover some really interesting news from Nvidia about Ray Tracing to Vulkan. Someone in the UK Police thought it was a good idea to warn parents their kids may become hackers and Microsoft announced their Microsoft Defender is coming to Linux. Then we’ll round out the show with some great deals for Games, Books and Comics from Humble Bundle. All that and much more on Your Weekly Source for Linux GNews!

  • Data School: How to merge DataFrames in pandas (video)

    In my new pandas video, you're going to learn how to use the "merge" function so that you can combine multiple datasets into a single DataFrame. Merging (also known as "joining") can be tricky to do correctly, which is why I'll walk you through the process in great detail. By the end of the video, you'll be fully prepared to merge your own DataFrames!