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# DynoSim: Simulating the Pareto Frontier

> DynoSim is a workload-driven discrete-event simulation of the NVIDIA Dynamo serving stack for mapping Pareto frontiers before real-cluster validation.

![DynoSim Pareto frontier plot showing explored configurations and GPU-verified configurations.](https://fdr-prod-docs-files-public.s3.us-east-1.amazonaws.com/dynamo.docs.buildwithfern.com/bc39695216ca404d8a770950d9d0c60a7608f4e4dba46dfe62935bb321dca658/digest/dynosim/dynosim-hero.png?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6KXJSKKNFOCF7G4B%2F20260726%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20260726T003025Z&X-Amz-Expires=604800&X-Amz-Signature=a9bbbfcf3faa3e50de89e23bbc0cc07c0aa073fc67643994fe2d2e7a264137f4&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)

DynoSim is a workload-driven discrete-event simulation of NVIDIA Dynamo: a Dynamo twin for exploring LLM serving behavior before running full deployments. It brings measured engine forward-pass timing, Mocker scheduler cores, Router and Planner behavior, KV cache effects, and workload traces onto one virtual timeline. In our blog post, [DynoSim: Simulating the Pareto Frontier](https://developer.nvidia.com/blog/dynosim-simulating-the-pareto-frontier/), we show how simulation becomes the inner loop for design exploration: sweep broadly, map the throughput-latency Pareto frontier, shortlist the most promising candidates, and verify them on real clusters.