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Rajkummar Buyya

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#edge computing Review Open access Aug 2026

Artificial intelligence-driven resource management in edge-cloud computing continuum for internet of things applications: new trends and future directions

The rapid proliferation of Internet of Things (IoT) devices across domains such as smart transportation, healthcare, and smart city infrastructure has intensified the demand for low-latency, energy-efficient, and scalable computing paradigms. While cloud computing has traditionally served as the backbone for IoT data processing, its inherent limitations have catalyzed the emergence of edge/fog computing, forming a distributed edge-cloud continuum. This review examines emerging trends in Artificial Intelligence (AI)-driven resource management within this continuum, with a focus on three directions: (1) the transition from centralized to distributed and collaborative intelligence, (2) cross-domain adaptation and knowledge transfer for heterogeneous IoT applications, and (3) the nascent integration of foundation models into edge environments. We ground our discussion in three complementary case studies: smart transportation as a representative vertical domain, cross-domain heterogeneous IoT application scheduling as a horizontal perspective, and industrial transferred arc plasma monitoring as an emerging industrial IoT scenario, and conclude with forward-looking research directions, including quantum-enhanced edge optimization, edge-native continual learning, digital twin-driven resource orchestration, and neuromorphic computing for ultra-low-power edge AI.

Zhiyu Wang, Nilotpal Kapri, L. Bittencourt et al. · 0 citations
Preprint Aug 2026

PrefixPlace: Provable Prefix Key-Value Placement for Large Language Model Serving under Heterogeneous Compute and Transfer Costs

Prefix Key-Value (KV) reuse avoids repeated prefill in Large Language Model (LLM) inference, but local misses require recomputation or replica fetches. Their relative cost varies with hardware, prefix depth, KV goodput, and replica location, making hit-rate-based placement suboptimal. To address this issue, we propose an epoch-level planner, PrefixPlace, which assigns prefix-complete targets under memory budgets and profiled demand, compute, and transfer costs. The objective decomposes into local-copy value plus first-replica coverage, and source-dependent costs yield a monotone facility-location objective; each worker update is an additive rooted-tree problem solved exactly in O(nk) time for n chunks and capacity k, giving a fixed-order 1/2-approximation that coordinate refinement and order-diverse starts improve without weakening. T4, L4, and A100 measurements reveal distinct regimes. Across 432 instances with exact optima, PrefixPlace averages 99.84% of optimum and never falls below 98.02%. In Retrieval-Augmented Generation (RAG) replays, it improves materialization-cost saving by 40.3% over vLLM Automatic Prefix Caching (vLLM-APC) and 6.3% over the best offline baseline. On WikiQA, gains are 40.4% and 5.3%. Finally, PrefixPlace solves a 50,000-node, 16-worker placement in 12.3 s on one processor, enabling timely replanning.

Zhiyu Wang, Rajkummar Buyya · 0 citations
Conference Open access Oct 2025

REACH: Reinforcement Learning for Adaptive Microservice Rescheduling in the Cloud–Edge Continuum

Cloud computing, despite its scalability advantages, may not fully satisfy the low-latency demands of emerging latency-sensitive applications. The cloud–edge continuum addresses this limitation by integrating the responsiveness of edge resources with cloud scalability. Microservice architecture (MSA), characterized by modular, loosely coupled services, aligns effectively with this continuum. However, heterogeneous and dynamic computing resources pose significant challenges to optimal microservice placement. Most existing approaches focus on generating one-time scheduling plans, which are ill-suited to dynamic environments where frequent and lightweight rescheduling actions are required in response to changing system conditions. We propose REACH, a reinforcement learning-based microservice rescheduling framework that enables a sim-to-real deployment pipeline for adapting microservice placement under fluctuating resource availability and performance variations across distributed infrastructures. REACH is integrated with a real Kubernetes-based cloud–edge continuum testbed, with open-source artifacts released for reproducibility.

Xu Bai, Muhammed Tawfiqul Islam, Rajkummar Buyya et al. · 0 citations
Preprint Aug 2026

How Much Reconstruction Does Quantum Machine Learning Need? Late Fusion of Independently Trained Quantum Subcircuits

Late fusion is an efficient, noise-robust, self-characterizing alternative to reconstruction for circuit-cutting QML and claims advantage over classical machine learning - consistent with recent benchmarking, quantum offers no accuracy edge on these datasets.

Prabhjot Singh, A. Toosi, Rajkummar Buyya · 0 citations
Preprint Aug 2026

Preserving Admission Responsibility in Multi-Tenant Large Language Model Prefix Caches

Results show that object-value signals rank what to retain, while persistent responsibility determines which group bears reclamation pressure, which shows that object-value signals rank what to retain, while persistent responsibility determines which group bears reclamation pressure.

Zhiyu Wang, Rajkummar Buyya · 0 citations
Open access Aug 2026

CELLServe: An SLO-Aware and Cost Efficient LLMs Serving System for Serverless Computing Environments

CELLServe formalizes SLO-constrained joint resource provisioning as an optimization problem with a dedicated algorithm, and introduces an opportunistic instance merging strategy for decode phase functions to reclaim fragmented resources.

Zejian Wang, Nan Lin, Zinuo Cai et al. · 0 citations