Nsight profiling

I wrote a simple gpu based single tracker in ubuntu. the code accepts a video and selected ROI as input(user should select ROI using opencv functions). after setting ROI, it tracks the objects in ROI. How can I profile it nvidia nsight?
by opening the executable code by nsight, it loads input video. I select ROI and tracks the objects but no report or trace is returned. what should I do?

I have some clarifying questions. Are you using Visual Studio? This forum is for the Visual Studio integration of Nsight tools. You mentioned Ubuntu in the post. Is this a cross-compile? Nsight is a line of products. What tools are you using to report/trace? Is it Nsight Systems, Nsight Compute, or some built in features in Visual Studio?