nvidia snmp agent doesn't work with new driver version 450 -> 550

[xmichal69666]

Hi,

I have observed and corrected the number of variables returned by nvidia snmp agent.
I'd like to contribute the corrected code.

While I have successfully tested output on new drivers (NVIDIA-SMI 550.54.15), the script is compatible also with older versions(like NVIDIA-SMI 450.51.06). I have both new and olds. The requirement is the temporary file (best on tmpfs storage like /dev/shm or /tmp) to further not execute the big (and slow) nvidia-smi binary, but only to work on the once-executed output.

The corrected script is attached to the issue as txt file for review.
UPDATED file:
nvidia.txt

[jyhsu2000]

Same issue occurred to me.
I tried the version you provided.
And it works. Thanks.

[xmichal69666]

Great to hear someone also benefits from the corrected code :-)

[omiT-84]

Seems to work for me too, but after I
fixed the typo: $numbats and $numvars

:update
Whoops, I spoke too soon. It is not working.

[xmichal69666]

Maybe I can help.
What error do you get when this script is being run? Also how do you run it (user/env)?
What system and nVidia driver version are you using?
Also provide the output of both:
nvidia-smi
and
nvidia-smi dmon -c 1 -s pucvmet

[omiT-84]

That would be great!
I use the script as an extend to snmp.
snmp is ran as root.
It's running Fedora 41 (server edition)
The output of the script is:
0,21,39,0,0,0,0,0,405,210,0,0,4,3,0,0,0,0,0

nvidia-smi

Fri May  9 04:09:47 2025       
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 570.133.07             Driver Version: 570.133.07     CUDA Version: 12.8     |
|-----------------------------------------+------------------------+----------------------+
| 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 |   00000000:01:00.0 Off |                  Off |
|  0%   39C    P8             21W /  450W |       4MiB /  24564MiB |      0%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+
                                                                                         
+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI              PID   Type   Process name                        GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|  No running processes found                                                             |
+-----------------------------------------------------------------------------------------+

nvidia-smi dmon -c 1 -s pucvmet

# gpu    pwr  gtemp  mtemp     sm    mem    enc    dec    jpg    ofa   mclk   pclk  pviol  tviol     fb   bar1   ccpm  sbecc  dbecc    pci  rxpci  txpci 
# Idx      W      C      C      %      %      %      %      %      %    MHz    MHz      %   bool     MB     MB     MB   errs   errs   errs   MB/s   MB/s 
    0     20     39      -      0      0      0      0      0      0    405    210      0      0      4      3      0      -      -      0      0      0