nvitop is an interactive command-line monitoring tool and Python library designed for tracking NVIDIA GPU performance and processes. Unlike basic monitoring utilities, it delivers real-time insights with an intuitive interface that continuously updates device and process status.

Key capabilities include:

Interactive monitoring mode with live bar charts, history graphs, and responsive keyboard/mouse controls
Process management - sort, filter, and send signals to GPU processes directly from the interface
Tree-view display showing GPU processes alongside their parent processes
Environment variable inspection and detailed process metrics
Efficient querying using NVIDIA Management Library (NVML) bindings instead of parsing nvidia-smi output
Cross-platform support for Linux and Windows with pure Python implementation
Integration capabilities for TensorFlow, PyTorch, and custom applications through its comprehensive API

The tool also includes nvisel, a CUDA device selection utility for deep learning researchers. Whether you need quick GPU utilization checks or detailed process-level monitoring, nvitop provides the insights developers, system administrators, and GPU engineers require for efficient resource management.