AMD and Microsoft prepping fix for Threadripper performance issues

Posted on Wednesday, Jan 16 2019 @ 10:44 CET by Thomas De Maesschalck
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Earlier this month, Level1Techs and BitSum discovered that AMD's Ryzen Threadripper 2990WX is slower than it should be on the Windows platform due to a bug in the scheduler of Microsoft's operating system. They released a workaround for the issue, which in some test cases nearly doubled the performance of the CPU. This left us wondering why AMD and Microsoft didn't figure this out, but fortunately both firms are now on the case.

Bit Tech writes AMD confirmed they're cooperating with Microsoft to resolve the many-core Threadripper and EPYC performance scaling issues under the Windows OS:
Now, AMD has spoken to Anandtech on the matter and brings glad tidings: The company is working closely with Microsoft to address the flaw, which it describes as 'very close' to the conclusions drawn by Level1Techs. AMD has promised it will make a public announcement once a patched scheduler or other update is available and that it will also bring additional performance improvements above and beyond those available using the Coreprio 'NUMA Dissociater' mode - though the company hasn't detailed exactly what these are nor how much real-world impact they will have.
Until there's an official patch, those running 32-core Threadripper of EPYC CPUs on Windows can use the Coreprio's NUMA Dissociater mode .


About the Author

Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.



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