MagicTag assertion Failed! Deserialization of engine failed!!

[hakunaMatataHub]

Description

I am trying to use TensorRT for instance segmentation application. For this I have saved the built engine and subsequently when I try to load the saved .engine file it says "Deserialization Failed. Internal error. Magic Tag assertion failed."

Interstingly, if I do not save the engine first but rather build and run inference at once consequitively, it does not throw any error.
For the record, my environment remains the same while building and saving the engine as well while running inferences.

Environment

jetpack 4.6 on Xavier Nx with CUDA 10.2, Linux 18.04, Tf 1.15, Python 3.6 and TensorRT 8.2

[ttyio]

@hakunaMatataHub , is the build engine and inference using different function in the same script? the error seems to me that 2 different TRT are installed in your system, is it possible that the build and inference are loading difference trt lib? thanks!

[ttyio]

close since no activity for more than 3 weeks, please reopen if you still have question, thanks!