Btw, forgot to mention this doesn't seem to be working on Windows. And should the run time output include hash rate per thread? I only see per device.
The runtime summary only happens if the program exits cleanly. Windows just doesn't like me and the program has to be killed instead of stopped at this stage which is why you never get that summary. The hash rate per thread will add no useful information since the work is spread precisely evenly between each thread going to the same CPU.