{"library":"nvidia-nvtx-cu12","title":"NVIDIA Tools Extension (NVTX) Python Binding","description":"NVTX (NVIDIA Tools Extension SDK) is a C-based API with Python wrappers for annotating application code with events, ranges, and resources. These annotations provide contextual information for NVIDIA developer tools like Nsight Systems and Nsight Compute, enabling visual profiling and performance analysis of CPU and GPU activities in Python applications. The `nvidia-nvtx-cu12` package provides bindings specifically for CUDA 12.x environments. It is actively maintained with frequent updates, often tied to CUDA toolkit releases.","language":"python","status":"active","last_verified":"Tue May 12","install":{"commands":["pip install nvidia-nvtx-cu12"],"cli":null},"imports":["import nvtx"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"import time\nimport nvtx\n\n@nvtx.annotate(\"my_outer_function\", color=\"blue\")\ndef my_function_to_profile():\n    time.sleep(0.05) # Simulate some work\n    with nvtx.annotate(\"inner_loop_work\", color=\"red\"):\n        for i in range(2):\n            time.sleep(0.02) # More work\n            nvtx.mark(f\"Iteration {i} complete\", color=\"green\")\n\nif __name__ == \"__main__\":\n    print(\"Running annotated code...\")\n    my_function_to_profile()\n    print(\"Code finished. To profile this, save as e.g., 'demo.py' and run:\\nnsys profile python demo.py\")\n    print(\"Then open the generated .qdrep file in NVIDIA Nsight Systems for visualization.\")","lang":"python","description":"This example demonstrates how to use `nvtx.annotate` as a decorator for functions and as a context manager for code blocks, and `nvtx.mark` for instantaneous events. 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