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March 23, 2021 14:06
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nvidia-smi in the browser, useful for monitoring a remote GPU server
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| import asyncio | |
| import subprocess | |
| from fastapi import FastAPI, WebSocket | |
| from fastapi.responses import HTMLResponse | |
| def nvidia_smi(): | |
| try: | |
| msg = subprocess.run( | |
| ["nvidia-smi"], | |
| stdout=subprocess.PIPE, | |
| stderr=subprocess.PIPE, | |
| timeout=5, | |
| ).stdout.decode() | |
| except FileNotFoundError: | |
| msg = "nvidia not available" | |
| return msg | |
| app = FastAPI() | |
| html = """ | |
| <!DOCTYPE html> | |
| <title>GPU Mon</title> | |
| <style>* {font-family: monospace; white-space: pre-wrap;}</style> | |
| <div id='message'></div> | |
| <script> | |
| var ws = new WebSocket("ws://" + window.location.host + "/gpu_mon/ws") | |
| ws.onmessage = function(event) { | |
| var message_el = document.getElementById('message') | |
| message.innerHTML = event.data | |
| } | |
| </script> | |
| """ | |
| @app.get("/gpu_mon") | |
| async def get(): | |
| return HTMLResponse(html) | |
| @app.websocket("/gpu_mon/ws") | |
| async def ws(websocket: WebSocket): | |
| await websocket.accept() | |
| while True: | |
| await websocket.send_text(nvidia_smi()) | |
| await asyncio.sleep(1) |
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