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AMD XDNA Linux Kernel Driver For Ryzen AI Updated

At the start of the year AMD posted an open-source XDNA Linux driver to GitHub for supporting the Ryzen API NPU IP found within their newest Ryzen mobile SoCs. It wasn't until last month though in mid-July that AMD began the process of submitting the driver for review so that it can work its way toward the mainline Linux kernel within the "accel" accelerator subsystem. Today brings a second revision to that driver...

Trying Out The Ubuntu "-O3" Optimized Build For Greater Performance

Canonical engineers on Friday announced they are evaluating "-O3" compiler optimized package builds for Ubuntu Linux. As part of this evaluation of using GCC's -O3 compiler optimization level rather than -O2 when compiling Ubuntu packages, experimental Ubuntu desktop and server ISOs are available for testing with this change. Excitingly I ran some initial benchmarks over the weekend in looking at the performance difference.

The Open-Source AMD GPU Linux Kernel Graphics Driver Nears 5.8 Million Lines

Last August I wrote an article about the open-source AMD GPU kernel driver crossing 5 million lines of code -- including their overzealous header files -- and following the recent Linux 6.11 merge window curiosity got the best of me with how much larger the kernel driver is now that the initial RDNA4 support is merged... Well, it's about to cross 5.8 million lines, or about a 16% increase just over the past year...

New Intel Linux Patches Continue Working To Improve Hybrid CPU Task Placement

Building off some "request for comments" patches sent out in April, a new set of patches appeared on Friday for the Intel P-State Linux driver for setting the asymmetric CPU capacity on hybrid systems. This is another attempt at helping to improve the Linux kernel scheduler behavior in ensuring optimal task placement between Intel Core processors having a mix of P and E cores. This patch series in particular helps when SMT / Hyper Threading support is disabled or like with upcoming Lunar Lake processors where there is no HT support...

Linux 6.12 To Drop Old Code That Slows Down CPU Frequency Polling

The Linux 6.12 kernel cycle later this year has a change coming that will impact users of the "Schedutil" CPU frequency scaling governor. This change is dropping the "LATENCY_MULTIPLIER" that has been within the kernel code the past two decades to slowdown how frequent the CPU frequency evaluation occurs. In turn the revised logic can allow for that CPUFreq frequency re-evaluation to occur more often...

Canonical Evaluating -O3 Optimized Packages For Ubuntu Linux

With Ubuntu 24.04 LTS the engineers at Canonical began focusing more on the performance of Ubuntu and establishing a performance team at the company. This work is ongoing and for Ubuntu 24.10 they are exploring another exciting area: leveraging "-O3" compiler optimizations for Ubuntu packages. Available today is an experimental build of the Ubuntu desktop and server ISOs that are compiled for the -O3 optimization level...

AMD Releases ROCm 6.2 With New Components, Improves PyTorch & TensorFlow

As expected, AMD has released ROCm 6.2 as the newest version of their open-source GPU compute stack for Radeon graphics cards and Instinct accelerators. ROCm 6.2 is a big update with several new software components, improving the existing PyTorch and TensorFlow support, and a variety of other enhancements as AMD works to better compete with NVIDIA's CUDA...

SMT Performance Benchmarks Continue To Show Benefit With AMD Zen 5/5C

While Intel's upcoming Core Ultra Series 2 "Lunar Lake" laptop processors are doing away with Hyper Threading (HT) and instead focusing more on additional E cores. AMD has asserted Simultaneous Multi-Threading (SMT) is still beneficial and supported across both their Zen 5 and Zen 5C cores. For those curious about the SMT performance and power efficiency impact, here are some SMT on/off comparison benchmarks using the Ryzen AI 9 HX 370 "Strix Point" laptop processor.

Etnaviv NPU Driver Support Working Well For The NXP i.MX 8M Plus SoC

Open-source developer Tomeu Vizoso who has been working on supporting Vivante NPU IP within the reverse-engineered Etnaviv driver has been much time recently focused on enabling the Vivante NPU found within the NXP i.MX 8M Plus SoC. While not yet upstreamed, he's been successful in this effort and seeing good performance for object detection with this hardware...

ASUS Zenbook S 16 UM5606WA Platform Profile Impact On Performance & Power

Like most modern Intel and AMD laptops, the new ASUS Zenbook S 16 models for the AMD Ryzen AI 300 series "Strix Point" support ACPI Platform Profiles for allowing the system platform behavior to be modified depending upon whether you are seeking maximum performance, balanced (default), or power savings/efficiency. With the Ryzen AI 9 365 and Ryzen AI 9 HX 370 testing I have been doing thus far it's been on the default balanced mode (along with other laptops being compared) while in this article is a look at the Ryzen AI 9 HX 370 performance impact on the ASUS Zenbook S 16 UM5606WA when trying the other platform profile options.

Sovereign Tech Fund Preparing Fellowship Program For Open-Source Maintainers

Germany's Sovereign Tech Fund has done a wonderful job providing funding to various open-source projects for advancing their work on free software. STF has been a huge success for prominent open-source projects while now it's also preparing a pilot program for STF Fellowships to provide funding to open-source maintainers that may be doing important work across multiple projects...
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