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https://github.com/vale981/ray
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d6bff736f3
Tests all snippets we have on ray.io. There were some minor issues, which I'll fix upstream. Signed-off-by: Max Pumperla <max.pumperla@googlemail.com>
43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
# TODO: actually use this to predict something
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import ray
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from ray import serve
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from fastapi import FastAPI
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from transformers import pipeline
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app = FastAPI()
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# Define our deployment.
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@serve.deployment(num_replicas=2)
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class GPT2:
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def __init__(self):
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self.nlp_model = pipeline("text-generation", model="gpt2")
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async def predict(self, query: str):
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return self.nlp_model(query, max_length=50)
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async def __call__(self, request):
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return self.predict(await request.body())
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@app.on_event("startup") # Code to be run when the server starts.
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async def startup_event():
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ray.init(address="auto") # Connect to the running Ray cluster.
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serve.start(http_host=None) # Start the Ray Serve instance.
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# Deploy our GPT2 Deployment.
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GPT2.deploy()
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@app.get("/generate")
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async def generate(query: str):
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# Get a handle to our deployment so we can query it in Python.
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handle = GPT2.get_handle()
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return await handle.predict.remote(query)
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@app.on_event("shutdown") # Code to be run when the server shuts down.
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async def shutdown_event():
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serve.shutdown() # Shut down Ray Serve.
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