Orin NX Power Data from JTOP

Autonomous Machines Jetson & Embedded Systems Jetson Orin NX
1

Hi,
When running JTOP on Orin NX, there are 4 power data can be read: CPU_GPU_CV, IN, SOC and ALL(Figure1). The meaning can be checked from Developer Guide(Figure2).

  1. What part(portion) does each channel stand for?
  2. If we want to know the power consumption of whole SOM, which one should we refer to, channel 1: VDD_IN or Channel 4: Summation(ALL)?
    (We ran heavy loading program with MAXN mode to get the monitoring data 23W from channel 1 and about 40W from channel 4. We are confused.)

Thanks.
Wayne
Figure1

Figure2
Figure2707×195 16.3 KB

3

Hi,
Please use Power GUI. May refer to this topic:
System throttle due to over current

4

Hi DaneLLL,
Thanks for reply.

  1. So, the power of VDD_IN is power consumption of whole SOM, right?
  2. The value of VDD_CPU_GPU_CV is power of CPU and GPU?
  3. How about VDD_SOC?

It looks like there’ no description for them on the sheets NVIDIA provides.

Thanks.
Wayne.

5

Hi,
Please check the section in developer guide:
Jetson Orin NX Series and Jetson AGX Orin Series — Jetson Linux Developer Guide documentation

VDD_IN is the total power consumption and others are individual hardware blocks.

6

Hi,
Thanks for reply.

VDD_IN = whole power of the SOM → OK.

I’ve read this part before, but can’t get the answers that I asked.
The description is not clear.

  1. The value of VDD_CPU_GPU_CV is power of CPU and GPU?
  2. How about VDD_SOC? By the value from Power GUI, it looks like not the whole SOC power, what does it stand for?
  3. Channel 4: SUMMATION, when or what condition do we need to check this value?

Thanks.
Wayne

7

1. So, the power of VDD_IN is power consumption of whole SOM, right?
Yes, VDD_IN is Total SOM power.
2) The value of VDD_CPU_GPU_CV is power of CPU and GPU?
The VDD_CPU_GPU_CV is a CPU, GPU, CV (ie DLA & PVA) combined power rail.
3) How about VDD_SOC? By the value from Power GUI, it looks like not the whole SOC power, what does it stand for?
Yes, it is not whole SOC power. It is a SOC’s core rail which supplies memory subsystem, engines like decoder, encoder, vi, vic, isp …etc.
4) Channel 4: SUMMATION, when or what condition do we need to check this value?
The summation channel can be configured to measure sum of two or three INA channels. It is valid only when summed channel’s input voltages are exactly same. It can be used to set over current limit for summation current.

8

Hi,
OK, got it.

Thanks.
Wayne

9

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