Nvitop failures usually fall into four layers: the NVIDIA driver, NVML availability, the Python environment, or the terminal itself. Troubleshooting is faster when you identify which layer is actually broken.
Error: command not found
Confirm Nvitop is installed in the Python environment you are currently using. Then check the console-scripts path or run python3 -m nvitop.
Error: NVML cannot initialize
Test nvidia-smi. If it fails, focus on the NVIDIA driver and system setup before reinstalling Nvitop. A Python reinstall cannot repair a broken driver stack.
nvidia-smi python3 --version python3 -m pip show nvitop python3 -m nvitop
Error: package installed in the wrong Python
Compare python --version, pip --version and the location shown by pip show nvitop. Virtual environments prevent many cross-interpreter mistakes.
Windows display or input problems
Check windows-curses and test Windows Terminal or another modern terminal emulator. Interactive behavior can vary even when the package is installed correctly.
Remote SSH display issues
Confirm that the remote host sees the GPU and that your terminal advertises reasonable capabilities. If the device layer works but the UI is odd, isolate terminal behavior from GPU access.
Next steps
Use the official project documentation and your own environment records as the final authority for commands that can change after this guide was published. If you are downloading source through this site, the homepage explains exactly which archive the main button uses.