In this tutorial,
https://www.youtube.com/watch?v=kFnewLG-y2E
CUDA Part C: The CUDA Toolkit: Libraries, Profilers, Debuggers
I found the presenter used a command aprun,after googling,I found it seem come from:Cray Linux Environment,question is how to install aprun in ubuntu 16.04
aprun comes with the Cray software stack (part of the alps module) and you get it when you purchase a Cray. There's not a generic linux installer for it for off-Cray use.