WaitForPresentFeb 10
Is there anything like Dx12 SetStablePowerMode available on linux?
Show threadJosh SimmonsFeb 10

@WaitForPresent on which hardware? I'm not sure if there's a useful cross-vendor API hooked up anywhere but getting stable clocks on amd is a matter of writing some values to some files.

https://docs.kernel.org/gpu/amdgpu/thermal.html profile_peak / profile_standard here for amdgpu.

GPU Power/Thermal Controls and Monitoring — The Linux Kernel documentation

Show threadWaitForPresentFeb 10
@dotstdy i have all vendors here so i was hoping for something crossvendor, but my hopes were small. My general problem is that on startup i calculate a timestamp deviation for vkGetCalibratedTimestampsEXT and later that the deviation returned from this drops significantly when the application idles. Launching a gpu intensive workload brings it back down though. This is a problem with e.g. the tracyprofiler as that loops indefinetly on vkGetCalibratedTimestamps until it is within a given range.
Show threadJosh Simmons
@WaitForPresent tbh I have absolutely no idea how that parameter is even supposed to work... It seems completely nonsensical to me.
Feb 10 at 4:32pmPhanpy
Show threadWaitForPresentFeb 10
@dotstdy yeah the specifics are also implementation dependent so overall it's not as useful really. Anyways a stable power mode for all three vendors would be universally useful!