Looking for delegate libaray

Bernd69 — Fri, 21 Nov 2025 13:53:34 GMT

Hello
I have an iMX8Plus development board here and I am trying to use the NPU for some object detection in python.
This works fine with the tflite_runtime.interpreter using libvx_delegat.so.

I tried on some other device the newer ai_edge_litert.interpreter (LiteRT instead of TensorflowLite) and if worked significantly faster, so I want to give it a try.
I installed a virtual environment for this LiteRT environment and my python program starts using this ai_edge_litert module.
But when I load the libvx_delegate.so i get a segmentation fault.
(Chat GPT told me) I probably need the liblitert_vx_delegate.so for this environment...
I searched everywhere, but I can't find it anywhere.

I know its probably in the latest yocto image for iMX8Plus, but I dont want to break my development board - i just want that library (and its required libraries)
Does anyone have an idea where to get this delegate library (liblitert_vx_delegate.so)?

Re: Looking for delegate libaray

JorgeCas — Fri, 21 Nov 2025 17:17:07 GMT

Hello,

We do not publish these libraries separately, they are included in the Yocto build or in eIQ SDK.

The delegate is located in /usr/lib/liblitert_vx_delegate.so as is mentioned in i.MX Machine Learning User's Guide.

Please consider upgrade the BSP version to update the TFlite verison.

Best regards.

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Looking for delegate libaray

Re: Looking for delegate libaray