How much does the image quality decrease of FP16 model?

[pango99]

Hi, I wrote a c++ program using libtorch to test the torchscript models, I found the speed of fp16 model is higher than fp32,it is exciting, but I only test one pair fg/bg image, I can t see any difference in the results between fp16 and fp32 models, so can you tell me how much does the quality will decrease of fp16 model?

[PeterL1n]

output_fp32 = model_fp32(input)
output_fp16 = model_fp16(input)

print(output_fp32 - output_fp16)

Test it yourself.