HeRo: Adaptive Orchestration of Agentic RAG on Heterogeneous Mobile SoC

Fuente: arXiv
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Main Authors: Li, Maoliang, Chen, Jiayu, Zheng, Zihao, Li, Ziqian, Sun, Xinhao, Luo, Guojie, Liu, Chenchen, Chen, Xiang
Format: Preprint
Published: 2026
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author Li, Maoliang
Chen, Jiayu
Zheng, Zihao
Li, Ziqian
Sun, Xinhao
Luo, Guojie
Liu, Chenchen
Chen, Xiang
author_facet Li, Maoliang
Chen, Jiayu
Zheng, Zihao
Li, Ziqian
Sun, Xinhao
Luo, Guojie
Liu, Chenchen
Chen, Xiang
contents With the increasing computational capability of mobile devices, deploying agentic retrieval-augmented generation (RAG) locally on heterogeneous System-on-Chips (SoCs) has become a promising way to enhance LLM-based applications. However, agentic RAG induces multi-stage workflows with heterogeneous models and dynamic execution flow, while mobile SoCs exhibit strong accelerator affinity, shape sensitivity, and shared-memory bandwidth contention, making naive scheduling ineffective. We present HeRo, a heterogeneous-aware framework for low-latency agentic RAG on mobile SoCs. HeRo builds profiling-based performance models for each sub-stage and model-PU configuration, capturing latency, workload shape, and contention-induced slowdown, and leverages them in a lightweight online scheduler that combines shape-aware sub-stage partitioning, criticality-based accelerator mapping, and bandwidth-aware concurrency control. Experiments on commercial mobile devices show that HeRo reduces end-to-end latency by up to $10.94\times$ over existing deployment strategies, enabling practical on-device agentic RAG.
format Preprint
id arxiv_https___arxiv_org_abs_2603_01661
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle HeRo: Adaptive Orchestration of Agentic RAG on Heterogeneous Mobile SoC
Li, Maoliang
Chen, Jiayu
Zheng, Zihao
Li, Ziqian
Sun, Xinhao
Luo, Guojie
Liu, Chenchen
Chen, Xiang
Distributed, Parallel, and Cluster Computing
With the increasing computational capability of mobile devices, deploying agentic retrieval-augmented generation (RAG) locally on heterogeneous System-on-Chips (SoCs) has become a promising way to enhance LLM-based applications. However, agentic RAG induces multi-stage workflows with heterogeneous models and dynamic execution flow, while mobile SoCs exhibit strong accelerator affinity, shape sensitivity, and shared-memory bandwidth contention, making naive scheduling ineffective. We present HeRo, a heterogeneous-aware framework for low-latency agentic RAG on mobile SoCs. HeRo builds profiling-based performance models for each sub-stage and model-PU configuration, capturing latency, workload shape, and contention-induced slowdown, and leverages them in a lightweight online scheduler that combines shape-aware sub-stage partitioning, criticality-based accelerator mapping, and bandwidth-aware concurrency control. Experiments on commercial mobile devices show that HeRo reduces end-to-end latency by up to $10.94\times$ over existing deployment strategies, enabling practical on-device agentic RAG.
title HeRo: Adaptive Orchestration of Agentic RAG on Heterogeneous Mobile SoC
topic Distributed, Parallel, and Cluster Computing
url https://arxiv.org/abs/2603.01661