AMD developers are working on revamping the "OverDrive" feature on Linux, allowing additional GPU overclocking capabilities on Linux.
AMD Plans to Integrate Several New Controls On OverDrive Overclocking Tool, Allowing Linux Users to Maximize RDNA GPU Performance
AMD's OverDrive feature has been on Linux for quite some time now, but when it comes to the overclocking capabilities, the feature is much inferior compared to its Windows counterpart. However, the AMD OverDrive might get an upgrade on Linux, given that Team Red is dedicated to improving its resources on the platform.
The existing OD interface `pp_od_clk_voltage` is unable to meet the growing demands for more OD functionalities. Since the buf used within it comes with size limit as one page. With more OD functionalities added, we will hit that limit soon.
To better meet the growing demands, a new set of OD interfaces are designed. With this new design, there will be multiple interfaces exposed with each representing a single OD functionality. And all those interfaces will be arranged in a tree liked hierarchy as below. Meanwhile all functionalities for the same component will be arranged under the same directory.
-AMD engineer Evan Quan via Phoronix
It is important to note that the changes made will have no effect on the graphical interface of the feature, and they are more focused on the user-space interface via sysfs. AMD doesn't officially have its own OverDrive GUI; instead, it has left this matter to third-party individuals, who can utilize the feature however they like.
The new OverDrive features will include options for adjusting the fan curve, PWM tuning, and several other necessary implementations that Linux users could adopt, to ensure the best performance. However, the newly added functions are limited to RDNA3 users only and aren't accessible to old-gen GPUs. The patches are currently for review, and their integration is expected by the next kernel v6.7 cycle, which is scheduled for November 2023.
Today's update shows another example of how AMD is dedicated to Linux. The company has recently upgraded its RADV Vulkan drivers, significantly boosting ray-tracing performance on Linux. We believe that with the release of next-gen RDNA 4 GPUs, the situation of AMD's resources on the platform will be completely different, with vast capabilities.
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