Jetson Nano reboots on high GPU load

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hi,
I have a Jetson Nano (production module) mounted on a Seed Studio carrier board J101.

Sometimes when I’m using the GPU on high load, it restarts.

I have found this by storing tegrastats and observing last thing it writes is a 99% frequency on GPU

RAM 3245/3964MB (lfb 107x4MB) SWAP 698/1982MB (cached 38MB) IRAM 0/252kB(lfb 252kB) CPU [11%@1326,35%@1326,13%@1326,11%@1326] EMC_FREQ 18%@1600 GR3D_FREQ 99%@921 VIC_FREQ 9%@192 APE 25 PLL@49C CPU@54.5C PMIC@50C GPU@51.5C AO@64C thermal@52.5C POM_5V_IN 7274/3121 POM_5V_GPU 3570/557 POM_5V_CPU 894/463

I’m using the MAXN mode

sudo jetson_clocks --show

SOC family:tegra210 Machine:NVIDIA Jetson Nano Developer Kit

Online CPUs: 0-3

cpu0: Online=1 Governor=schedutil MinFreq=1200000 MaxFreq=1479000 CurrentFreq=1479000 IdleStates: WFI=1 c7=1

cpu1: Online=1 Governor=schedutil MinFreq=1200000 MaxFreq=1479000 CurrentFreq=1224000 IdleStates: WFI=1 c7=1

cpu2: Online=1 Governor=schedutil MinFreq=1200000 MaxFreq=1479000 CurrentFreq=1479000 IdleStates: WFI=1 c7=1

cpu3: Online=1 Governor=schedutil MinFreq=1200000 MaxFreq=1479000 CurrentFreq=1224000 IdleStates: WFI=1 c7=1

GPU MinFreq=76800000 MaxFreq=921600000 CurrentFreq=76800000

EMC MinFreq=204000000 MaxFreq=1600000000 CurrentFreq=1600000000 FreqOverride=0

Fan: PWM=80

NV Power Mode: MAXN

The power supply is the Raspberry 5 one (up to 27W) so power should not be a problem.

How can I find what is exactly happening? How can I prevent the machine to reboot on high loads?

Thanks

3

Hi diego45,

What’s your Jetpack version in use?

Could you share the full serial console log when it restarts?

It seems you are running something in high loading.
Have you tried to configure a custom power mode configuration for your use case?

5

Hi Kevin,
Jetpack 4.6.4 (L4T 32.7.4)

I don’t see console logs at the time of restart, it just freezes and restarts, when I check the system logs I only see the startup log with no interesting info on it. Any suggestion where can I see some logs?

I didn’t try a custom power configuration. I assume your suggestion is to put a lower max frequency for the GPU, is that right?

Thanks

6

How about /var/log/syslog on your board?

Yes, something like that to constraint the CPU/GPU frequency to optimize the performance instead of using unconstraint MAX-N mode.

7

Changing GPU max frequency to a lower value made it. It is now 80% of the GPU real max capacity but it is ok for the project.

Thanks

9

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