Encountered “Found an unsupported target: APUSYS_2_0” while executing DLA on G520

NeuroPilot NeuroPilot - Analytical AI
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Hi, I am currently trying to run a DLA model compiled for MDLA5.3 on the G520 EVK.

I am using the Neuron SDK package for MT8189 provided in the “Neuron SDK” link. On the host side(Ubuntu 22.04), I used the ncc-tflite tool under the host directory to convert the model into .dla format using the following command:

./ncc-tflite --arch=mdla5.3,edma3.6 ./qat_quant.tflite -o ./qat_quant_g520.dla --relax-fp32 --opt=3
The conversion completes successfully.

However, when I run the test using neuronrt with the following command:

./neuronrt -m hw -a qat_quant_g520.dla -i bin_input/1.png_2828.bin -o output_g520.bin -c 10 -b 100

I encounter the error below:

WARNING: Cannot create device for APUSYS_2_0
WARNING: Found an unsupported target: APUSYS_2_0
WARNING: Fail to revise dla::CompiledResult
WARNING: Fail to preprocess dla::CompiledGraph
WARNING: Fail to preprocess dla::CompiledNetwork
ERROR: Cannot prepare execution.
ERROR: Successfully open network but cannot start execution.
ERROR: NeuronRuntime_loadNetworkFromFile fails: Cannot load network
Cannot load model from file qat_quant_g520.dla
Read dla fail

What I find strange is that if I push the mt8189 directory to the G520 via adb push and perform the same steps directly on the device, it works properly.

May I ask what could be the reason for this error occurring only on the host side?

Thanks!

2

Hi Samuel_Wu,

The reason for this behavior is that the model was converted to a DLA format using the host-side ncctflite tool, and you then attempted to run inference on a PC. However, since a PC does not have an NPU, this DLA model is not supported for PC-based inference. The generated DLA is intended for use on the 8189 device, not on the host machine.

Regarding the neuronrt tool located at:

neuropilot-sdk-basic-8.0.10-build20251029/neuron_sdk/host/bin/neuronrt

this tool was originally developed as an internal debugging utility during development and cannot be used for inference on a PC.

Regards

Jing

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