Intel's OSPray 2.0 Ray-Tracing Engine Released

An area where Intel continues striking with rhythm and near perfection is on the open-source software front with their countless speedy and useful open-source innovations that often go unmatched as well as timely hardware support. Out this weekend is their OSPray 2.0 release for this damn impressive ray-tracing engine.

40 Minutes Ago - Intel - Intel Ray-Tracing - Add A Comment
The AMD Ryzen Thermal / Power Linux Reporting Improvements Working Well - V2 Up For Testing

A few days ago I reported on AMD's "k10temp" Linux kernel driver finally seeing the ability to report CCD temperatures and CPU current/voltage readings as a big improvement to this hardware monitoring driver. The work hasn't yet been queued for inclusion into the mainline kernel, but initial testing is working well and a second revision to the patches has been sent out.

8 Hours Ago - AMD - AMD k10temp - 13 Comments

18 January

More Details On Intel's CVE-2019-14615 Graphics Vulnerability, a.k.a. iGPU Leak

As for CVE-2019-14615 the Intel graphics vulnerability disclosed this week affecting Gen7 through Gen9 graphics architectures, it's been dubbed "iGPU Leak" by the researchers involved. Thanks to the researcher who originally discovered this vulnerability having reached out to us, we now have some more information on this issue they describe as a "dangerous vulnerability."

18 January 02:52 PM EST - Intel - iGPU Leak - 8 Comments
The Linux Kernel Obsoletes The Intel Simple Firmware Interface

We haven't heard of the Simple Firmware Interface in a number of years, but that changed this week in Linux now formally marking SFI as "obsolete" and confirmation Intel does not plan to ship any future platforms with this standard that dates back to their early days of working on Atom-powered mobile devices.

18 January 07:50 AM EST - Intel - Simple Firmware Interface - Add A Comment

17 January

ASUS TUF Laptops With Ryzen Are Now Patched To Stop Overheating On Linux

The AMD Ryzen Linux laptop experience continues improving albeit quite tardy on some elements of the support. In addition to the AMD Sensor Fusion Hub driver finally being released and current/voltage reporting for Zen CPUs on Linux, another step forward in Ryzen mobile support is a fix for ASUS TUF laptops with these processors.

17 January 09:00 AM EST - AMD - ASUS TUF + Ryzen Mobile - 26 Comments
Benchmarks Of Arch Linux's Zen Kernel Flavor

Following the recent Linux kernel tests of Liquorix and other scheduler discussions (and more), some requests from premium supporters rolled in for seeing the performance of Arch Linux's Zen kernel package against the generic kernel. Here are those benchmark results.

17 January 01:09 AM EST - AMD - Arch Linux Zen Benchmarks - 16 Comments

16 January

Red Hat Recommends Disabling The Intel Linux Graphics Driver Over Hardware Flaw

It's been another day testing and investigating CVE-2019-14615, a.k.a. the Intel graphics hardware issue where for Gen9 all turned out to be okay but for Gen7 graphics leads to some big performance hits. Besides the Core i7 tests published yesterday in the aforelinked article, tests on relevant Core i3 and i5 CPUs are currently being carried out for seeing the impact there (so far, it's looking to be equally brutal).

16 January 08:05 PM EST - Red Hat - CVE-2019-14615 - 24 Comments
Ryzen CPUs On Linux Finally See CCD Temperatures, Current + Voltage Reporting

One of the few frustrations with the AMD Ryzen CPU support on Linux to date has been besides the often delayed support for CPU temperature reporting has been the mainline kernel not supporting voltage readings and other extra sensors. But that is finally changing with the "k10temp" driver being extended to include current and voltage reporting plus CCD temperature reporting on Zen 2 processors.

16 January 01:39 PM EST - AMD - k10temp - 42 Comments
LLVM 10 Adds Option To Help Offset Intel JCC Microcode Performance Impact

Disclosed back in November was the Intel Jump Conditional Code Erratum that necessitated updated CPU microcode to mitigate and with that came with a nearly across the board performance impact. But Intel developers had been working on assembler patches for helping to reduce that performance hit. The GNU Assembler patches were merged back in December while now ahead of LLVM 10.0 that alternative toolchain has an option for helping to recover some of the lost performance.

16 January 09:06 AM EST - Intel - --x86-branches-within-32B-boundaries - 2 Comments

15 January

Intel's Mitigation For CVE-2019-14615 Graphics Vulnerability Obliterates Gen7 iGPU Performance

Yesterday we noted that the Linux kernel picked up a patch mitigating an Intel Gen9 graphics vulnerability. It didn't sound too bad at first but then seeing Ivy Bridge Gen7 and Haswell Gen7.5 graphics are also affected raised eyebrows especially with that requiring a much larger mitigation. Now in testing the performance impact, the current mitigation patches completely wreck the performance of Ivybridge/Haswell graphics performance.

15 January 09:00 PM EST - Display Drivers - 61 Comments
Kubuntu Focus Offers The Most Polished KDE Laptop Experience We've Seen Yet

As we mentioned back in December, a Kubuntu-powered laptop is launching with the blessing of Canonical and the Kubuntu Community Council. That laptop, the Kubuntu Focus, will begin shipping at the beginning of February while the pre-orders opened today as well as the embargo lift. We've been testing out the Kubuntu Focus the last several weeks and it's quite a polished KDE laptop experience for those wanting to enjoy KDE Plasma for a portable computing experience without having to tweak the laptop for optimal efficiency or other constraints.

15 January 03:20 PM EST - Computers - 35 Comments
Intel Sends Out Linux Patches For Speed Select Core-Power Controls

Coming to Linux last year with the 5.3 kernel was Intel Speed Select Technology support as a Cascade Lake feature for optimizing the per-core performance configurations to favor certain cores at the cost of reducing the performance capacity for other CPU cores. That Intel Speed Select (SST) support for Linux is now being enhanced with core-power controls.

15 January 12:05 AM EST - Intel - Speed Select Core-Power - 1 Comment

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