I am working with a Tesla K20m card. The clock throttling on this card seems to be always on.
The relevant nvidia-smi output is
Clocks Throttle Reasons
Idle : Active Applications Clocks Setting : Not Active SW Power Cap : Not Active HW Slowdown : Active Sync Boost : Not Active Unknown : Not Active
I have tried the simple steps like GPU Reset, Reboot the system and they have not helped. Google hasn’t been of a lot of help with this problem.
I have seen the 4 reasons that could lead to “HW Slowdown” from http://developer.download.nvidia.com/compute/cuda/6_0/rel/gdk/nvidia-smi.331.38.pdf.
- The temperature is under 50
- PState is constant when I check the status
- Power draw can't be too high as the measured power is around 17W (P8 power state)
- Since the other reason is related to power supply, I have tested the card with two different power supplies. However the problem remains even when I use alternate power supplies
The system has Ubuntu 16.04 OS and I have CUDA 8.0 and driver version 375.66 installed. Earlier I had driver version 375.57 installed and the problem exists in both driver versions.
Any suggestions will be very helpful.