nv-nsight-cu command in Xshell

The X server available via the applications you use, Xshell and Xming, doesn’t seem to provide all requirements expected by Nsight Compute’s Qt UI. I recommend you collect the data from your GPU server using the Nsight Compute command line interface (CLI), or via the UI’s remote profiling feature. In both cases, you can run the UI and inspect the data on your local desktop with full X support. You can alternatively also inspect the collected data via the CLI directly.