Ray Data LLM enables 2x throughput over vLLM’s synchronous LLM engine at production-scale

Ray Data LLM is a powerful library designed to enhance large-scale batch inference for large language models (LLMs) by providing scalable execution, high throughput, and fault tolerance. Unlike traditional synchronous LLM engines such as vLLM, Ray Data LLM optimizes performance through asynchronous execution, allowing for continuous batching and efficient resource use, which significantly boosts throughput. By addressing challenges like the non-determinism of LLMs and variability in execution times, Ray Data LLM ensures resiliency in production environments by automatically handling errors without crashing the pipeline and offering row-level observability. The library disaggregates tokenization and detokenization processes, allowing for fine-grained control over resources, and supports integration with existing Ray Data pipelines, making it easy to implement complex data processing workflows. Benchmark studies demonstrate that Ray Data LLM's asynchronous execution consistently outperforms synchronous methods, especially as decode lengths increase, providing a scalable solution for AI applications that require robust data processing capabilities.