Tegrastats reports 2 GPUs on AGX Orin devkit

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

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


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.

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


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


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