How to compare two arcface features (torch) ms1mv3_arcface_r100_fp16

I saw the inference example at : https://github.com/deepinsight/insightface/blob/master/recognition/arcface_torch/inference.py

How can I compare two features ?

I used dist = np.sum(np.square(f1 - f2))

it gives 500 , 700 like numbers.

model is : ms1mv3_arcface_r100_fp16

Best