JCC Erratum Impact On Skylake Xeon Scalable Plus The Patched Assembler

Last week ago we provided a number of benchmarks looking at the performance impact from Intel's Jump Conditional Code (JCC) Erratum that required a CPU microcode update to mitigate but that comes with a performance hit. At least Intel has pending GNU Assembler patches to help offset that performance hit. In time for last week's articles I didn't have a chance to perform Skylake Xeon Scalable (1st Gen) benchmarks but now here are some metrics alongside Cascade Lake.

6 Hours Ago - Intel - Skylake vs. Cascadelake - 2 Comments

19 November

Intel Haswell To Ice Lake Laptop Performance Benchmarks On Ubuntu 19.10

With the many Intel Ice Lake Linux benchmarks we began publishing over the past month since picking up a Dell XPS with Core i7-1065G7, there have been many benchmarks compared to the likes of the Core i7 Whiskey Lake and Kaby Lake processors. For those curious how the performance stacks up going further back, here are some Ubuntu 19.10 laptop benchmarks putting it up against the likes of Core i7 Haswell and Broadwell processors.

19 November 04:13 PM EST - Processors - 11 Comments
Linux's Crypto API Is Adopting Some Aspects Of Zinc, Opening Door To Mainline WireGuard

Mainlining of the WireGuard secure VPN tunnel was being held up by its use of the new "Zinc" crypto API developed in conjunction with this network tech. But with obstacles in getting Zinc merged, WireGuard was going to be resorting to targeting the existing kernel crypto interfaces. Instead, however, it turns out the upstream Linux crypto developers were interested and willing to incorporate some elements of Zinc into the existing kernel crypto implementation.

19 November 11:09 AM EST - Linux Kernel - Zinc-ed Crypto API - 5 Comments
Intel's Graphics Driver DoS Fix Last Week Has Hurt Power Consumption

While the patches overnight about "substantial" improvement in power usage for Intel graphics on Linux were exciting on first look, it's less so now as it turns out last week's graphics driver security fixes is what regressed the Intel graphics power-savings.

19 November 10:38 AM EST - Intel - Denial of Service or Worse Battery Life - 5 Comments

18 November

Intel's oneAPI / DPC++ / SYCL Will Run Atop NVIDIA GPUs With Open-Source Layer

With yesterday's much anticipated Intel oneAPI beta being built around open-source standards like SYCL, the "cross-device" support can at least in theory extend beyond just Intel platforms. Codeplay is already showing that's possible with a to-be-open-source layer that will allow oneAPI and SYCL / Data Parallel C++ to run atop NVIDIA GPUs via CUDA.

18 November 04:21 PM EST - Intel - oneAPI On NVIDIA GPUs - 3 Comments
Intel To Drop Very Old Drivers/BIOS From Their Site, But The Linux Impact To Be Minimal

Making waves today is that Intel will be removing very old BIOS and driver downloads from their site on or after 22 November. Though these software downloads for the products in question are around ~20 years old so the real-world impact should be small plus with Linux drivers being in the mainline kernel, all you'd really be losing out on are BIOS updates that themselves haven't seen updates in years.

18 November 01:33 PM EST - Intel - Very Old Components - 17 Comments

17 November

Zink Benchmarks - Mesa OpenGL Running Over Vulkan

With the upcoming Mesa 19.3 release one of the big new features is the "Zink" driver that provides a Mesa OpenGL implementation over Vulkan. This in theory allows for a generic OpenGL driver running over Vulkan hardware drivers, but there is a lot of work ahead before it's really a viable option.

17 November 10:45 AM EST - Display Drivers - 10 Comments
The GCC 10 Compiler Lands OpenMP / OpenACC Offloading To AMD Radeon GPUs

A few days ago I wrote about the OpenMP / OpenACC offloading patches for Radeon "GCN" GPUs being posted and seeking inclusion in the GCC 10 compiler that will be released in a few months. Those patches were successfully merged meaning this next annual update to the GNU Compiler Collection will feature initial OpenMP/OpenACC code offloading support to supported AMD GPU targets.

17 November 03:16 AM EST - GNU - GCC 10 GCN Offloading Merged - 1 Comment

16 November

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