May 10, 2026· ~6 min readAtlas Engine: Sub-2-Minute Cold Start for Multi-Model Orchestration on DGX Spark A pure Rust inference engine achieves 96 tok/s on Qwen3.5-35B-A3B—a 3× speedup over vLLM's 31 tok/s, with cold startup in 15 seconds versus vLLM's 10