问题
I use nvidia-smi to see the status of each GPU on a computing node but find one of them is E. Thread. Is there any easy way to switch it back to default mode?
------------------------------------------------------+
| NVIDIA-SMI 346.46 Driver Version: 346.46 |
|-------------------------------+----------------------+----------------------+
| 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 680 Off | 0000:03:00.0 N/A | N/A |
| 30% 30C P8 N/A / N/A | 10MiB / 4095MiB | N/A E. Thread |
+-------------------------------+----------------------+----------------------+
| 1 GeForce GTX 680 Off | 0000:04:00.0 N/A | N/A |
| 30% 29C P8 N/A / N/A | 10MiB / 4095MiB | N/A Default |
+-------------------------------+----------------------+----------------------+
回答1:
nvidia-smi -h
will give you command line help, and there is also a man page:
man nvidia-smi
the following command should reset that device to compute mode of 0 (default)
nvidia-smi -i 0 -c 0
should reset that device (0) to compute mode of 0 (default)
You need to have root privilege to modify the device this way, so either be a root user or run the command with sudo
回答2:
In order to know the current Compute Mode, use the following command
nvidia-smi --query | grep 'Compute Mode'
In order to set the Compute Mode, use the following command
sudo nvidia-smi -c $i
Where $i could be 0, 1, 2 or 3. Meaning of these numbers are given below -
0 Default
1 Exclusive_Thread
2 Prohibited
3 Exclusive_Process
Answer to your question
sudo nvidia-smi -c 0
This will set all GPUs in default mode. Use -i 0 flag if you want to apply it only to GPU 0.
来源：https://stackoverflow.com/questions/31731535/switch-cuda-compute-mode-to-default-mode