Ripping threads with Coreprio and DLM

Subject: Processors | March 20, 2019 - 04:34 PM |
Tagged: amd, coreprio, threadripper 2, 2990wx, dynamic local mode

Owning a Threadripper is not boring, the new architecture offers a variety of interesting challenges to keep your attention.  One of these features is the lack of direct memory access for two of the dies, which can cause some performance issues and was at least partially addressed by introducing Dynamic Local Mode into Ryzen Master.  On Windows boxes, enabling that feature ensures your hardest working cores have direct memory access, on Linux systems the problem simply doesn't exist.  Another choice is Coreprio, developed by Bitsum, which accomplishes the same task but without the extras included in Ryzen Master. 

Techgage ran a series of benchmarks comparing the differences in performance between the default setting, DLM and Coreprio.

AMD-Ryzen-Threadripper-2990WX-CCX-Diagram.png

"Performance regression issues in Windows on AMD’s top-end Ryzen Threadripper CPUs haven’t gone unnoticed by those who own them, and six months after launch, the issues remain. Fortunately, there’s a new tool making the rounds that can help smooth out those regressions. We’re taking an initial look."

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Source: Techgage

Let us see how you handle my Threadripper's new NUMA Dissociater attack!

Subject: General Tech | January 15, 2019 - 02:57 PM |
Tagged: amd, NUMA, Threadripper, numa dissociator, coreprio

With Threadripper, AMD introduced something new and different to the market, a HEDT architecture with nonuniform memory access.  This has met with mixed results, as is reasonable to expect from such a different chip design.  There has not been much out of Redmond to adapt Windows to handle this new design compared to the amount of work coming out of the enthusiast community, especially those using Linux.

Phoronix has recently benchmarked a piece of software from CorePrio called NUMA Dissociater on both Windows and Linux.  It was designed to better address some performance issues on the Threadripper 2990WX and 2970WX than AMD's Dynamic Local Mode which can be enabled if you run their Ryzen Master software.  As you can see in the full review the results are not earth shattering, nor do they always increase performance, but the foundation for improvement is fairly solid. 

coreprio_ui.png

"Here are some benchmarks of Windows 10 against Linux while trying out CorePrio's NUMA Dissociater mode to see how much it helps the performance compared to Ubuntu Linux. Additionally, tests are included of Windows Server 2019 to see if that server edition of Windows is able to offer better performance on this AMD HEDT NUMA platform."

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Source: Phoronix