Switched to GPU - no speedup in performancde

Jan 1, 2016 at 5:57 AM
Hi,
when I switch from cpu to gpu (GeForce 730M) I don't see any speedup...why is that?
I'm running a network almost similar to the simple2d demo (only with higher dimension). I also notice that there is activity in the GPU according to the taskbar icon. Any ideas?