Slow performance?

[4loops]

Hi,

Wondering what the estimated time is for a command like th adversarial.lua -i images/banana/example2.jpg to complete?

I get output like

`

OverFeat construction

Time elapsed: 1.5289809703827 seconds
==> prepare an input image
==> feed the input image
Prediction: banana -0.0055457842536271
Time elapsed: 8.1086008548737 seconds

============================================================
Adversarial training

Original prediction: #323 banana
Adversarial: #836 cardigan
Finding starting point
Trying C = 0.01`

but no other output after close to an hour of running the command. I have also tried running on GPU, but it doesn't appear that the GPU is used up to this point in the code. Is this execution time expected?

Thanks.