Monday March 13, 2017

AMD Speaks Ryzen - You Should Give a Listen

Robert Hallock, Technology Evangelist at AMD, has made a blog post over on the AMD Community page entitled, "AMD Ryzenآ™ Community Update." First and foremost, AMD puts the "Windows Scheduler argument" to bed.

We have investigated reports alleging incorrect thread scheduling on the AMD Ryzenآ™ processor. Based on our findings, AMD believes that the Windowsآ® 10 thread scheduler is operating properly for "Zen," and we do not presently believe there is an issue with the scheduler adversely utilizing the logical and physical configurations of the architecture.

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He goes on to harpoon the Windows 7 and Windows 10 rhetoric.

We do not believe there is an issue with scheduling differences between the two versions of Windows. Any differences in performance can be more likely attributed to software architecture differences between these OSes.

Temperature Reporting and Power Plans are addressed as well. And then goes onto address all the rumors surround issues with Ryzen and SMT.

For the remaining outliers, AMD again sees multiple opportunities within the codebases of specific applications to improve how this software addresses the "Zen" architecture. We have already identified some simple changes that can improve a game’s understanding of the "Zen" core/cache topology, and we intend to provide a status update to the community when they are ready.

So the whole SMT Off/On issue has not been fully addressed yet and it seems that AMD is seeing some things in regard to this that will need to be addressed.