# Initialize models and configurations
model_name = 'intfloat/e5-small'
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
embedding_model = HuggingFaceEmbeddings(model_name=model_name)
embedding_model.client.to(device)

# Initialize Chroma with existing database
vectordb = Chroma(
    persist_directory='./docs/chroma/',
    embedding_function=embedding_model
)