Open-source News

Linux Kernel Mitigated For "Zenbleed" Vulnerability Affecting AMD Zen 2 CPUs

Phoronix - Tue, 07/25/2023 - 00:56
It looks like the updated Family 17h microcode this morning isin relation to a new Zen 2 CPU security vulnerability being disclosed. The Linux kernel has also just received a patch for this "Zenbleed" vulnerability for older AMD CPUs...

The Performance Impact Of Genoa-X's 3D V-Cache With The AMD EPYC 9684X

Phoronix - Mon, 07/24/2023 - 23:18
Last week in the AMD EPYC 9684X review were many benchmarks looking at how this flagship Genoa-X processor compares to various AMD EPYC and Intel Xeon processors. The EPYC 9684X delivers terrific generational uplift compared to Milan-X, offers significant advantages over the EPYC 9004 Genoa processors thanks to the 1.1GB of L3 cache per CPU that proves very beneficial in HPC and AI workloads, and the 96-core / AVX-512 / 3D V-Cache combination far surpassed the Intel performance in the vast majority of benchmarks. As some follow-up benchmarks, today is looking precisely at the performance difference caused by the 3D V-Cache presence by looking at the EPYC 9684X performance when the 3D V-Cache feature was enabled and then the tests repeated when disabled.

New AMD Zen CPU & Radeon GPU Microcode Land In Linux-Firmware.Git

Phoronix - Mon, 07/24/2023 - 21:54
Both new AMD Zen CPU and Radeon GPU microcode/firmware have been published today to the linux-firmware.git tree...

RadeonSI + ACO Now Supports Monolithic Merged Shaders

Phoronix - Mon, 07/24/2023 - 18:47
Qiang Yu continues leading the charge on integrating the ACO compiler back-end into the RadeonSI Gallium3D driver as an optional alternative to the AMDGPU LLVM shader compiler back-end...

More FUTEX2 Additions Being Worked On For The Linux Kernel

Phoronix - Mon, 07/24/2023 - 18:35
Merged back in 2021 with Linux 5.16 was the FUTEX2 code to help with Linux gaming needs particularly around Steam Play. There were plans to further extend FUTEX2 and now two years later there's been recent patches working out more enhancements to this interface...

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