wehub-resource-sync
62 lines
1.6 KiB
Python
62 lines
1.6 KiB
Python
# __example_code_start__
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from transformers import pipeline
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from fastapi import FastAPI
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import torch
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from ray import serve
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from ray.serve.handle import DeploymentHandle
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app = FastAPI()
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@serve.deployment(num_replicas=1)
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@serve.ingress(app)
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class APIIngress:
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def __init__(self, distilbert_model_handle: DeploymentHandle) -> None:
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self.handle = distilbert_model_handle
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@app.get("/classify")
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async def classify(self, sentence: str):
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return await self.handle.classify.remote(sentence)
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@serve.deployment(
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ray_actor_options={"num_gpus": 1},
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autoscaling_config={"min_replicas": 0, "max_replicas": 2},
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)
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class DistilBertModel:
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def __init__(self):
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self.classifier = pipeline(
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"sentiment-analysis",
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model="distilbert-base-uncased",
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framework="pt",
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# Transformers requires you to pass device with index
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device=torch.device("cuda:0"),
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)
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def classify(self, sentence: str):
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return self.classifier(sentence)
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entrypoint = APIIngress.bind(DistilBertModel.bind())
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# __example_code_end__
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if __name__ == "__main__":
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import requests
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import ray
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ray.init(runtime_env={"pip": ["transformers==4.36.2", "accelerate==0.28.0"]})
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serve.run(entrypoint)
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prompt = (
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"This was a masterpiece. Not completely faithful to the books, but "
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"enthralling from beginning to end. Might be my favorite of the three."
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)
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input = "%20".join(prompt.split(" "))
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resp = requests.get(f"http://127.0.0.1:8000/classify?sentence={prompt}")
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print(resp.status_code, resp.json())
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assert resp.status_code == 200
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