Thor GPU speed are keeped in 0 Hz

Robotics & Edge Computing Jetson Systems Jetson Thor
1

We are trying to do stress test on GPU.
The stress test tool is gpu_burn.
We check the GPU work load by jtop, the GPU speed keep in 0 KHz.
Why?

3

You need a more recent version of jtop. If you install jetson_stats/jtop from source with following from README.md. That 2GPU was recently updated.

Option 4: Ubuntu 24.04 run jtop without sudo and without “–break-system-packages”

https://github.com/rbonghi/jetson_stats

Download "scripts/install_jtop_torun_without_sudo.sh"
Make it executable: chmod +x install_jtop_torun_without_sudo.sh
Run "sudo -v"    -v, --validate does not run any command, but allows the use of sudo in the bash script.
Then install with   ./install_jtop_torun_without_sudo.sh

edit: if you want 2GPU use script above. The pr was just merged into master.

4

Thanks whitesscott for the insight.

Hi ekeechg,
Please refer to what whitesscott mentioned and give it a try.

Are you using the devkit or custom board for Thor?
What’s your Jetpack version in use?

5

OK, I can see the speed with that patch.
well, I have both devkit and custom board. here is another problem.
I can see the power consumption with devkit, but there is no power column with our custom board.
This is devkit jtop :

44a9b817-221a-4c48-a326-270cfdeb769e
44a9b817-221a-4c48-a326-270cfdeb769e1375×689 199 KB

this is our custom board:

9edc1ec6-5af0-4060-a0bc-c18f2be34085
9edc1ec6-5af0-4060-a0bc-c18f2be340851347×678 221 KB

BSP, Jetpack and Jtop are all same. Why our custom board’s jtop has no power column.

17ef7ca4-5c18-49a9-99a8-90e0d6df0a59
17ef7ca4-5c18-49a9-99a8-90e0d6df0a59960×426 72.7 KB

6

The Devkit’s power can reach 110W,
But our custom board max power can only reach 60W.

7

If your custom board does not have these hwmon then the power part of jtop will not work.

ls /sys/bus/i2c/drivers/ina3221/2-0040/hwmon/hwmon*/in*_input 
ls /sys/bus/i2c/drivers/ina3221/2-0040/hwmon/hwmon*/curr*_input

If it does have hwmon, save this code block to $HOME/.local/share/jtop/lib/python3.12/site-packages/jtop/get_power_snapshot.py


#!$HOME/.local/share/jtop/bin/python3
"""
Call jtop.core.thor_power.get_power_snapshot() and print results.
Works with installed jtop package.
"""
import time
from jtop.core import thor_power

def main():
    snapshot = thor_power.get_power_snapshot()
    print(f"\nPower Snapshot @ {time.strftime('%Y-%m-%d %H:%M:%S')}")
    print("-" * 48)
    for k, v in snapshot.items():
        print(f"{k:20s}: {v}")
    print("-" * 48)

if __name__ == "__main__":
    main()

Run it like this

$HOME/.local/share/jtop/bin/python3 -m jtop.get_power_snapshot

It will print out similar to

Power Snapshot @ 2025-11-06 21:44:29
------------------------------------------------
gpu_mw              : 0.0
cpu_soc_mss_mw      : 4734.72
vin_sys_5v0_mw      : 5342.4
system_total_mw     : 19010.0
ts                  : 1762494269.7120812
------------------------------------------------