arXiv:2510.03283cs.LGcs.AI2025-10被引 3

MACE通过动态调度让大模型在边缘端持续学习,同时保证低延迟和高吞吐。

MACE: A Hybrid LLM Serving System with Colocated SLO-aware Continuous Retraining Alignment

  • 将推理与微调共置,按迭代级别智能分配显存和算力。
  • 相比周期重训练,推理延迟降低最高达63%,显卡利用率超85%。
  • 适合需要实时更新的边缘场景,如个性化助手和内容审核。

部署在边缘服务器的大语言模型越来越多地用于个性化助手、推荐系统和内容审核等对延迟敏感的应用。然而,用户数据的非平稳性要求频繁重训练,这在有限的GPU资源下造成了推理延迟与模型准确率之间的根本矛盾。现有重训练策略或延迟更新、过度占用资源,或忽略迭代级粒度。本文指出,迭代级调度对于在不违反服务等级目标(SLO)的前提下适应模型漂移至关重要。我们提出MACE,一种混合式LLM系统,将并发推理(预填充、解码)与微调共置,并采用智能内存管理,在保障推理吞吐量的同时最大化任务性能。MACE利用‘并非所有模型更新都同等影响输出对齐’这一洞察,合理分配GPU计算周期,平衡吞吐、延迟与更新时效性。基于实际追踪的评估显示,MACE在保持连续重训练效果的同时,推理延迟最高降低63%,并在资源受限条件下维持稳定吞吐。相较于周期重训练,MACE在预填充、解码和微调各阶段均改善延迟表现,并在NVIDIA AGX Orin上实现超过85%的显卡利用率。结果表明,迭代级混合调度是边缘平台部署具备持续学习能力的LLM的可行方向。

原文摘要 · Abstract (English)

Large language models (LLMs) deployed on edge servers are increasingly used in latency-sensitive applications such as personalized assistants, recommendation, and content moderation. However, the non-stationary nature of user data necessitates frequent retraining, which introduces a fundamental tension between inference latency and model accuracy under constrained GPU resources. Existing retraining strategies either delay model updates, over-commit resources to retraining, or overlook iteration-level retraining granularity. In this paper, we identify that iteration-level scheduling is crucial for adapting retraining frequency to model drift without violating service-level objectives (SLOs). We propose MACE, a hybrid LLM system that colocates concurrent inference (prefill, decode) and fine-tuning, with intelligent memory management to maximize task performance while promising inference throughput. MACE leverages the insight that not all model updates equally affect output alignment and allocates GPU cycles accordingly to balance throughput, latency, and update freshness. Our trace-driven evaluation shows that MACE matches or exceeds continuous retraining while reducing inference latency by up to 63% and maintaining throughput under resource constraints. Compared to periodic retraining, MACE improves latency breakdown across prefill, decode, and finetune stages, and sustains GPU utilization above 85% in NVIDIA AGX Orin. These results demonstrate that iteration-level hybrid scheduling is a promising direction for deploying LLMs with continual learning capabilities on edge platforms.

大模型部署边缘计算持续学习推理优化

Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。