Please check Line 71 of contrastive_loss.cpp

[denny1108]

I think it should be:
if (static_cast(bottom[2]->cpu_data()[j])==static_cast(bottom[3]->cpu_data()[j]))
instead of
if (static_cast(bottom[2]->cpu_data()[j])==static_cast(bottom[2]->cpu_data()[j]))

Anyway, your .cu version is right! :)

[happynear]

Sorry, I used an old buggy version of contrastive_loss when updating cudnn v3.

[happynear]

It seems that I used a very old version to merge. I need to check it carefully.