Applications that route requests, select agent actions, or assign policy outcomes often need scores over a fixed set of choices instead of free-form text. Deploying these decision models with llama.cpp on Amazon SageMaker AI gives you a managed path for serving quantized models on CPU or GPU infrastructure.
This post continues a series on specialized AWS Deep Learning Containers (DLCs) for generative AI inference. Previous posts cover WhisperX, vLLM-Omni – Part 1, and vLLM-Omni – Part 2.
In this post, you first use the AWS DLC for llama.cpp to serve OpenAI-compatible chat completions through SageMaker AI InvokeEndpoint. You then extend the same runtime with SemIf, formerly OpenJev, which returns probabilities over declared options without decoding an answer token. The accompanying code sample includes CPU and GPU deployment options.
Figure 1 shows two deployment paths from the same packaged model. The text-generation path uses the AWS DLC for llama.cpp and returns generated responses through the OpenAI-compatible API. The structured-decision path builds a child image that replaces the default server with a SemIf adapter and returns probabilities for declared options.
Figure 1: Run the AWS DLC for llama.cpp or the SemIf child image on CPU or GPU, depending on the API and latency requirements of your workload
gz in Amazon Simple Storage Service (Amazon S3) and reference the published DLC image directly. cpp arguments.
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