Tegrastats reports 2 GPUs on AGX Orin devkit

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
1

When I run tegrastats on the AGX Orin devkit, I notice that it reports data for 2 GPUs. As per the specifications, it seems that there is only one GPU. Could you please clarify what G3RD and G3RD2 refer to here?

02-04-2023 08:06:49 RAM 3137/30623MB (lfb 4068x4MB) SWAP 0/15311MB (cached 0MB) CPU [3%@2192,0%@729,0%@729,0%@729,0%@729,0%@729,0%@730,0%@729,5%@2193,0%@2192,4%@2192,0%@2193] EMC_FREQ 0%@2133 GR3D_FREQ 0%@114 GR3D2_FREQ 0%@114 NVJPG1 729 VIC_FREQ 729 APE 233 CV0@-256C CPU@49.937C Tdiode@39.5C SOC2@45.812C SOC0@47.781C CV1@-256C GPU@44.406C SOC1@47.687C CV2@-256C VDD_GPU_SOC 4813mW/4813mW VDD_CPU_CV 1202mW/1202mW VIN_SYS_5V0 5208mW/5208mW NC 0mW/0mW VDDQ_VDD2_1V8AO 1001mW/1001mW NC 0mW/0mW

3

Are you testing with JetPack 5.1?
If not, please upgrade to this version to try again.

Thanks

4

Hi,
This is expected. Orin iGPU contains two GPCs. Each GPCs contain their frequency controller. So 2 nodes correspond to those 2 controllers. You can calculate the average loading by checking the values.

7

Got it. So the GPU utilization can be calculated by taking the average of the two values reported?

8

Hi,

Yes, each node represents a cluster loading.
The average of two scores will get the overall GPU loading.

For GPCs info, please find below document:

Figure 4: Orin Ampere GPU Block Diagram

Thanks.

9

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