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.

2 Hours Ago - GNU - GCC 10 GCN Offloading Merged - Add A Comment

16 November

15 November

OnLogic Karbon 700: Passively-Cooled, Up To 8 Core / 16 Thread Industrial & Rugged PC

OnLogic (formerly known as Logic Supply until a recent rebranding) announced the Karbon 700 back in August as a durable Linux-friendly computer largely intended for industrial applications but nothing prevents the user from using it as a passively, well-built desktop PC either. OnLogic recently sent over the Karbon 700 and it's been working out very well even with passively cooling an Intel Xeon eight-core / sixteen-thread processor, 16GB of RAM, 512GB NVMe storage, and more.

15 November 12:40 PM EST - Computers - 10 Comments
Experimental Work Allows DXVK To Be Natively Used For Direct3D 11 On Linux

The DXVK Direct3D 10/11 over Vulkan implementation to date has been built as a Windows library run under Wine along with the game/software being rendered for converting the calls to Vulkan for execution by the host drivers. There is now experimental work for building DXVK as a native Linux library for converting D3D10/D3D11 calls to Vulkan outside of Wine.

15 November 07:41 AM EST - Vulkan - D3D11 On Linux - 18 Comments

14 November

Zombieload V2 TAA Performance Impact Benchmarks On Cascade Lake

While this week we have posted a number of benchmarks on the JCC Erratum and its CPU microcode workaround that introduces new possible performance hits, also being announced this week as part of Intel's security disclosures was "Zombieload Variant Two" as the TSX Async Abort vulnerability that received same-day Linux kernel mitigations. I've been benchmarking the TAA mitigations to the Linux kernel since the moment they hit the public Git tree and here are those initial benchmark results on an Intel Cascade Lake server.

14 November 08:28 AM EST - Software - 17 Comments
Intel's Assembler Changes For JCC Erratum Are Not Hurting AMD

When writing about the Intel Jump Conditional Code (JCC) Erratum and how Intel is working to mitigate the performance hit of the CPU microcode update with patches to the GNU Assembler, there was some concern expressed by readers that it might hurt AMD performance. That does not appear to be the case.

14 November 04:23 AM EST - AMD - JCC Assembler Test - 32 Comments

13 November

The Firefox + Chrome Web Browser Performance Impact From Intel's JCC Erratum Microcode Update

With yesterday's overview and benchmarks of Intel's Jump Conditional Code Erratum one of the areas where the performance impact of the updated CPU microcode exceeding Intel's 0~4% guidance was on the web browser performance. Now with more time having passed, here are more web browser benchmarks on both Chrome and Firefox while comparing the new CPU microcode release for the JCC Erratum compared to the previous release. Simply moving to this new CPU microcode does represent a significant hit to the web browser performance.

13 November 03:19 PM EST - Software - 21 Comments
AMD GCN OpenMP/OpenACC Offloading Patches For The GCC 10 Compiler

Over the past year Code Sourcery / Mentor Graphics has been working extensively on the new AMD Radeon "GCN" back-end for the GCC code compiler. With the code that is found in GCC 9 and up to now in GCC 10 hasn't supported OpenMP/OpenACC parallel programming interfaces but that could soon change with patches under review.

13 November 03:48 AM EST - GNU - OpenMP / OpenACC To AMD GCN - 1 Comment
VirtualBox SF Driver Ejected From The Linux 5.4 Kernel

Merged to the mainline Linux kernel last week was a driver providing VirtualBox guest shared folder support with the driver up to now being out-of-tree but important for sharing files between the host and guest VM(s). While the driver was part of Linux 5.4-rc7, Linus Torvalds decided to delete this driver on Tuesday.

13 November 12:06 AM EST - Virtualization - Shared Folder Support - 15 Comments

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