Quantization tutorial error

[ayj8655]

Describe the issue:

I was doing a quantization tutorial (quantization_quick_start_mnist, quantization_speedup) However, I runnig the tutorial on Jupyter notebook and an error occurred Both tutorials have errors in the same code

Environment:

• NNI version: 2.9
• Training service (local|remote|pai|aml|etc): local
• Client OS: Ubuntu 18.04
• Server OS (for remote mode only):
• Python version: 3.8.5
• PyTorch/TensorFlow version: PyTorch = 1.10.2 pytorch-lightning = 1.7.7 TensorFlow = 2.5.2 nvidia-tensorrt = 8.4.1.5
• Is conda/virtualenv/venv used?: conda
• Is running in Docker?: no

How to reproduce it?:

https://nni.readthedocs.io/en/latest/tutorials/quantization_quick_start_mnist.html https://nni.readthedocs.io/en/latest/tutorials/quantization_speedup.html

I downloaded the jupyter Notebook and run it without modification.

[Lijiaoa]

the same issue with #5002 and #4938 keyword:

example for quantization

DynamicRange(min: -0.424213, max: 2.82149). Dynamic range should be symmetric for better accuracy. AttributeError: 'NoneType' object has no attribute 'dynamic_range'

[Bonytu]

I'm sorry for replying you very late, may I ask if you solved the problem？