Closed brian-maher closed 3 years ago
kentrussell
commented
4 years ago This seems like a kernel bug, as the SMI is just a fancy interface for amdgpu's sysfs. What kind of monitor config are you looking at? I know that there are some weird bugs with multi-monitor and mclk depending on the monitor/connector/refresh rate
brian-maher
commented
4 years ago There isn't any monitor connected to the card.
It's passed through to a VMWare VM, which itself uses the default vmware display adapter for console output.
kentrussell
commented
4 years ago Thanks, that helps. Can you check dmesg after you set the clocks to low? I am hoping to see if there is an error regarding "Failed to upload..." from the PP table access. If not, is it possible to use the "auto" setting instead of "low" ? If you need "low" to work, I'd suggest raising a ticket with the kernel guys, since this looks like a kernel bug. But first, let's check the dmesg and see if there is an error trying to actually set the perf level to low or not
kentrussell
commented
4 years ago Sorry for the delay, this appears to be related to a known kernel bug. The 3.7 release would contain the fix for this, so if you can give the 3.7 kernel a shot, that should cover it. If it's still occurring, I think that it would likely get fixed when https://gitlab.freedesktop.org/drm/amd/-/issues/801 gets fixed, but I am hoping that the other DPM cleanup has addressed it (since that bug report is about a laptop)
kentrussell
commented
3 years ago Closing this as 3.7 resolved this issue. If you have any issues, please open a new issue at https://github.com/RadeonOpenCompute/rocm_smi_lib, as this repo will be deprecated and all SMI CLI functionality has moved over there. Thank you!
Hi,
Bit of a weird one, but fully reproducable on my system. Upon first boot, my mclk sits at level 0 (167mhz).
If I set
--setperflevel highand do anything with the card, this jumps to level 3. When the card is no longer in use, and i set--setperflevel low, the sclk goes back to level 0, but the mclk stays at level 3.Despite rocm-smi indicating no extra power usage (it stays at 3w), my UPS shows an additional load of 2% (rated for 700w), so somewhere there is an additional 14w being consumed by the card which is being unreported.
Manually setting the mclk to 0 doesn't work. Manually changing the slck, however, does.
If I repeat the process using auto (e.g. reboot,,
--setperflevel auto--setperflevel low, this doesn't seem to occur and the card settles back down to level 0 nicely.The card is a Vega Frontier using ROCm Version: 3.3, rocm-smi installed package is: 1.0.0-199-rocm-rel-3.3-19-ga9d6426
Some further info from the card (you'll notice no load, and low perf mode but high mem clocks):