NVIDIA on Arch, Power Managerment and Compute Processes

Hi, recently I installed Arch on my computer and updated with the newest Nvidia driver. However, when I type “nvidia-smi”, the information is showed below. I noticed that:

[1] The Pwr:Usage/Cap (power managerment) on GTX 285 and Tesla C2070 become N/A, but that on Tesla C2070 is still normal.
[2] The “compute processes” become “not supported”.

I am very struggled about it. Can anyone here help me out please?

Thanks.

±-----------------------------------------------------+
| NVIDIA-SMI 337.12 Driver Version: 337.12 |
|-------------------------------±---------------------±---------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+======================+======================|
| 0 GeForce GTX 285 Off | 0000:02:00.0 N/A | N/A |
| 40% 56C N/A N/A / N/A | 3MiB / 2047MiB | N/A Default |
±------------------------------±---------------------±---------------------+
| 1 Tesla C2075 Off | 0000:03:00.0 Off | 0 |
| 30% 51C P0 80W / 225W | 9MiB / 5375MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 2 Tesla C2070 Off | 0000:84:00.0 Off | 0 |
| 30% 56C P0 N/A / N/A | 9MiB / 5375MiB | 0% Default |
±------------------------------±---------------------±---------------------+
| 3 Tesla C2075 Off | 0000:85:00.0 Off | 0 |
| 30% 56C P0 81W / 225W | 9MiB / 5375MiB | 0% Default |
±------------------------------±---------------------±---------------------+

±----------------------------------------------------------------------------+
| Compute processes: GPU Memory |
| GPU PID Process name Usage |
|=============================================================================|
| 0 Not Supported |
±----------------------------------------------------------------------------+

Those features, and/or reporting on those features, is not supported on those GPUs. In general, nvidia-smi provides the highest level of information on Tesla products, and the lowest level on GeForce products. Power capping as a feature is not supported on Tesla C2070, but is supported on C2075. You may also wish to refer to the documentation for NVML, the API upon which the nvidia-smi tool is based:

http://docs.nvidia.com/deploy/nvml-api/index.html

The support matrices are not detailed in the latest versions of the NVML API documentation, but you can get an idea of the difference between C2070 and C2075, for example, by referring to the chart on p4 of the older documentation here:

https://developer.nvidia.com/sites/default/files/akamai/cuda/files/CUDADownloads/NVML_cuda5/nvml.4.304.55.pdf