View source for Nvdia-smi tips and tricks

== Ouput example ==
<syntaxhighlight lang="bash">
+---------------------------------------------------------------------------------------+
| NVIDIA-SMI 535.86.05              Driver Version: 535.86.05    CUDA Version: 12.2     |
|-----------------------------------------+----------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |         Memory-Usage | GPU-Util  Compute M. |
|                                         |                      |               MIG M. |
|=========================================+======================+======================|
|   0  NVIDIA GeForce RTX 4090        Off | 00000000:D8:00.0 Off |                  Off |
| 30%   42C    P8              38W / 450W |      2MiB / 24564MiB |      0%      Default |
|                                         |                      |                  N/A |
+-----------------------------------------+----------------------+----------------------+
+---------------------------------------------------------------------------------------+
| Processes:                                                                            |
|  GPU   GI   CI        PID   Type   Process name                            GPU Memory |
|        ID   ID                                                             Usage      |
|=======================================================================================|
|  No running processes found                                                           |
+---------------------------------------------------------------------------------------+
</syntaxhighlight>
{| class="wikitable"
|+
!Property name
!Anotation 
!Meaning
|-
|Performance State
|Perf
|States range from P0 (maxi-mum performance) to P12 (minimum performance).
|}

== Turn on / off ECC<ref>https://thelinuxcluster.com/2013/07/24/turning-off-and-on-ecc-ram-for-nvidia-gp-gpu-cards/</ref> ==
To Turn off the ECC RAM
 # nvidia-smi -g 0 --ecc-config=0
 (repeat with -g x for each GPU ID)
To Turn back on ECC RAM
 # nvidia-smi -g 0 --ecc-config=1
 (repeat with -g x for each GPU ID)
To Reset ECC error<ref>https://developer.download.nvidia.com/compute/DCGM/docs/nvidia-smi-367.38.pdf</ref>
 # nvidia-smi -g 0 --reset-ecc-errors=TYPE (0|VOLATILE or 1|AGGREGATE)

== Reset GPU ==
 # nvidia-smi -g 0 --gpu-reset

== GPU mode ==
The mode of the GPU is established directly at power-on, from settings stored in the GPU’s non-volatile memory.

gpumodeswitch changes the mode of the GPU by updating the GPU’s non-volatile memory settings.


Compute mode is a configuration that is optimized for high-performance computing (HPC) applications, Compute mode can cause compatibility problems with OS and hypervisors when the GPU is used primarily as a graphics device.

== Compute mode ==
<code>#nvidia-smi -g0 -c <mode number></code>
{| class="wikitable"
|+
!number
!Mode
!Meaning
|-
|<code>0</code>
|<code>Default</code>
|Default mode GPU can be shared with several jobs, 
|-
|<code>1</code>
|<code>Exclusive_Thread</code>
|Exclusive thread mode only is allowed to run one job, but in the same time, only one thread runs on exclusive thread mode GPU.
|-
|<code>2</code>
|<code>Prohibited</code>
|prohibited mode GPU is not allowed to run job, 
|-
|<code>3</code> 
|<code>Exclusive_Process</code>
|Exclusive process mode  is allowed to run one job, but in the same time, only one process runs on exclusive process mode GPU.
|}

== References ==
<references />