Running LLMs locally: Practical LLM Performance on DGX Spark — Mozhgan Kabiri chimeh, NVIDIA

Moving LLM workloads from the cloud to local infrastructure requires a shift in engineering strategy. In this talk, I share my journey of serving and benchmarking open-source models (1.5B to 14B) on an NVIDIA DGX Spark workstation. Using a reproducible methodology with vLLM, I analyze real-world trade-offs in throughput, latency, and the benefits of the 128GB Grace Blackwell unified memory architecture. You will leave with a clear framework for local model sizing, an understanding of quantization performance like NVFP4, and a guide for when local compute is the right choice for your AI stack.

Speaker info:
– LinkedIn https://www.linkedin.com/in/mozhgankch/