Travis Zhang

Results 2 issues of Travis Zhang

I think i find a bug in [model-quantization/task_cls.py](https://github.com/aim-uofa/model-quantization/blob/master/task_cls.py): you shold add `import utils` or it will caused an `NameError` when i try to import my own pretrained model.

hi, when i try to train a quant model using config`detectron2/configs/COCO-Detection/retinanet_R_18_FPN_1x-Full-SyncBN-lsq-2bit.yaml`, and the loss became `nan` at iterations 390 ```bash -- Process 0 terminated with the following error: Traceback (most...