DynoPipe: Heterogeneous Edge-Cloud LLM Serving with Dynamically Orchestrated Pipeline Boundaries

Large language model (LLM) deployment at the network edge faces a fundamental paradox: applications require full-scale models for sophisticated reasoning, yet edge devices impose severe resource constraints across computation, memory, and network. Existing approaches fail to effectively orchestrate resources across the edge-cloud continuum, leaving capacity underutilized while struggling with heterogeneous and volatile distributed environments. We present DynoPipe, an adaptive edge-cloud system that addresses these constraints through dynamic pipeline parallelism with shifting computational boundaries. DynoPipe tackles three core challenges: structural heterogeneity causing 94% pipeline idle time, temporal resource volatility invalidating static partitioning, and boundary migration overhead trapping systems in suboptimal configurations. Through boundary-constrained pipeline construction, proactive multi-configuration orchestration, and hierarchical state management, DynoPipe eliminates the memory wall while preserving data locality, achieving $\mathbf{1 0. 1} \times$ throughput improvement over edge-only baselines and $\mathbf{1. 6} \times$ over cloud-only execution, with 99.2% latency reduction.