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Aujourd’hui — 10 avril 2025Phoronix

Linux Tightening Up AMD Zen 5 CPU Microcode Check

10 avril 2025 à 12:34
Google engineers earlier this year detailed an AMD CPU microcode signature verification vulnerability. For local users with administration/root privileges, it could lead to loading malicious CPU microcode patches on the system. Initially AMD Zen 1 through Zen 4 were affected but the Google security engineers since discovered Zen 5 also could be impacted. BIOS updates are rolling out to address this signature verification issue while the Linux kernel is also being patched for microcode protections on Zen 5...

Intel Linux Graphics Driver Will Now Be Less Restrictive Over RAM Use

10 avril 2025 à 10:52
A change merged yesterday to the Intel Mesa graphics driver code lessens a restriction around the amount of system memory (RAM) that can be used by processes for the Vulkan system heap. This will allow more games/apps to work with the Intel integrated graphics that previously exceeded the driver-enforced limits but at the risk of running into broader out-of-memory behavior if under too much memory pressure...

RADV Driver Now Emulates Ray-Tracing By Default For Older AMD GPUs For A Newer Game

10 avril 2025 à 09:46
Mesa's Radeon Vulkan driver "RADV" is now exposing its emulated ray-tracing support by default for older AMD Radeon GPUs even without any form of hardware-accelerated ray-tracing in order to run the new Indiana Jones game. It turns out even the emulated RT mode is fast enough to allow various older AMD Radeon graphics cards to be playable with this title...

Gallium Nine Has Been Deprecated, Planned For Removal In Mesa 25.2

10 avril 2025 à 09:24
Long before the likes of DXVK for Direct3D APIs implemented atop Vulkan, and even before the Vulkan API was conceived, there's been Gallium Nine as a Direct3D 9 state tracker implementation for Gallium3D. Gallium Nine showed promise in its early days for speeding up D3D9 Windows games running atop Wine on Linux. But with DXVK working out better these days and Gallium Nine no longer being maintained in recent times, it's now deprecated and set for removal later this year...

Linux 6.16 To Add Asahi UAPI Header For Apple Silicon Graphics But No Actual Driver Yet

10 avril 2025 à 00:30
Submitted today via DRM-Misc-Next for queuing in DRM-Next until the Linux 6.16 merge window in June is the Asahi driver user-space API "UAPI" header. This is the user-space API intended for the Asahi kernel graphics driver for supporting the Apple M-Series graphics hardware under Linux. But due to being written in the Rust programming language and various kernel abstractions not yet ready among other obstacles, only the user-space API header is set to be added and not yet introducing the actual Direct Rendering Manager driver...
Hier — 9 avril 2025Phoronix

Benchmarks: Google Cloud's New C4D VMs Deliver Remarkable Performance With AMD EPYC Turin

9 avril 2025 à 12:00
As part of the announcements coming out today from Google Cloud Next 2025, the embargo has now lifted on the new Google Cloud C4D VMs. Powered by AMD EPYC 9005 "Turin" processors, the new C4D instances deliver incredibly high performance and can scale up to 384 vCPUs with 3TB of RAM. For web servers, databases, CPU-based machine learning, and other workloads, the new Google C4D instances deliver incredible uplift compared to the prior-gen C3D instances. Here are some of the first public, independent benchmarks of Google's new C4D family.

AMD Preferred Core Support For Linux Revised To Better Handle Dynamic Rankings

9 avril 2025 à 10:04
Merged back in Linux 6.9 was AMD Preferred Core support for Linux for the concept of "preferred cores" with newer Zen processors that are communicated via ACPI CPPC for select cores able to reach a higher maximum frequency or should otherwise be preferred over other cores on the system in the name of maximizing performance. That was a nice step forward for better handling newer Ryzen processors on Linux and matching functionality that had already been working under Microsoft Windows. Of focus more recently has been working on enabling more dynamic Preferred Core support for where the priority of the preferred cores may change at run-time...

Microsoft's Azure Linux 3.0 Adds AMD GPU Driver Install Instructions

9 avril 2025 à 09:43
Yesterday brought the newest update to Microsoft's in-house Linux distribution, Azure Linux. The Azure Linux 3.0.20250402 brought many package updates mostly in the name of shipping security fixes plus brought new instructions on making use of the AMD graphics driver stack under this Microsoft Linux distribution along with various other updates...
À partir d’avant-hierPhoronix

PostgreSQL Merges Initial Support For NUMA Awareness

8 avril 2025 à 18:50
The PostgreSQL open-source database server has been on an exciting spree of recent changes... IO_uring support was recently merged for PostgreSQL 18 along with AVX-512 acceleration of CRC32 computations for up to a 3x improvement. Merged today to PostgreSQL is initial support for NUMA awareness for helping with the PostgreSQL performance for multi-node/socket servers...
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