Matching theory has been efficiently applied in fog computing networks (FCNs) to design distributed task offloading algorithms in the presence of selfishness and rationale of fog nodes. Given the dynamic nature of fog...
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ISBN:
(纸本)9798350349955;9798350349948
Matching theory has been efficiently applied in fog computing networks (FCNs) to design distributed task offloading algorithms in the presence of selfishness and rationale of fog nodes. Given the dynamic nature of fog computing environment, it is challenging to obtain the stable matching since the preference relations of two sides of matching game is unknown a prior. To address this challenge, this paper proposes RE-MATCH, a framework for parallel computation offloading in dynamic fog computing networks (FCNs). RE. MATCH is based on the matching theory and Thompson Sampling (TS) empowered Multi-Armed Bandit (MAR) learning to deal with the inherent challenges allowing task nodes with needed computation tasks to estimate the informed preference relations of helper nodes with available computing resource quickly and accurately. Extensive simulation results demonstrate the potential advantages of the TS based learning over the epsilon-greedy and upper confidence bound (UCB) based baselines.
Systolic Array (SA) architecture is a hardware accelerator for running Artificial Intelligence (AI) workloads. Although approximate computing offers hardware and performance benefits, it often sacrifices accuracy, lim...
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ISBN:
(纸本)9798350384406
Systolic Array (SA) architecture is a hardware accelerator for running Artificial Intelligence (AI) workloads. Although approximate computing offers hardware and performance benefits, it often sacrifices accuracy, limiting its application to error-resilient tasks. Many inexact multipliers in SA exhibit one-sided Error Distribution (ErD), resulting in significant accumulated errors. Approximate computing proves valuable in error-resilient image processing applications, fostering research into various approximation techniques for enhanced hardware performance. This paper explores SA architecture with different configurations of approximate multipliers (AMs) featuring distinct ErDs. It employs a meta-heuristic optimization algorithm, Particle Swarm Optimization (PSO), for image smoothing tasks. The study delves into trade-offs between hardware acceleration and accuracy, offering insights for advancing approximate computing in SA-based AI workloads. The PSO-evolved SA configuration showcases a 3.05% performance improvement, 10.63% silicon footprint reduction, and 10.32% power savings compared to the exact SA. The PSO-derived SA structure also offers notable hardware gains when compared with other state-of-theart (SOTA) benchmark designs. Additionally, it demonstrates a better Structural Similarity Index (SSIM) compared to SA with one-sided error-distributed AMs. The proposed spatially optimized SAs with AMs of different ErDs represent a step towards reliable hardware design and establishing a nearly exact AI accelerator system. All design files and results are shared openly with the research and design community for easy adoption and further exploration.
With the growing integration of distributed generations (DGs) and renewable energy sources, bipolar DC microgrids have attracted increased attention due to their high efficiency, cost-effectiveness, and flexibility. H...
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ISBN:
(纸本)9798350386509;9798350386493
With the growing integration of distributed generations (DGs) and renewable energy sources, bipolar DC microgrids have attracted increased attention due to their high efficiency, cost-effectiveness, and flexibility. However, bipolar DC microgrids are susceptible to severe unbalanced voltage problems that threaten their safe and stable operation. To tackle this challenge, this paper introduces a distributed coordinated control strategy for unbalanced voltage regulation in bipolar DC microgrids featuring flexible ZIP loads. The proposed strategy comprises primary and secondary control mechanisms. The proposed control facilitates power distribution among DGs while maintaining the average bus voltage at its rated value. Meanwhile, the secondary control exploits the consensus theory and the relationship between bipolar voltages and the voltage unbalanced factor (v(hb)%), enabling convergence of v(hb)% across poles and maintaining of the average bus voltage at its rated value. Simulation results validate the effectiveness of the proposed strategy, demonstrating its ability to effectively mitigate unbalanced voltage and enhance voltage stability in bipolar DC microgrids.
Quantum links are inherently noisy and quantum information bits (qubits) suffer upto 13% degradation in their entangled states within time-scale of 0.5 ms. Thus, mitigating errors becomes essential for reliable end-to...
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ISBN:
(纸本)9781538674628
Quantum links are inherently noisy and quantum information bits (qubits) suffer upto 13% degradation in their entangled states within time-scale of 0.5 ms. Thus, mitigating errors becomes essential for reliable end-to-end data communication in a multi-hop quantum network. Compared to the typical operations performed within the contained environment of a single quantum computer, removal of both bit- and phase-flip errors in a distributed network of such computers is challenging due to the stochastic variations in the noise at each intermediate link. This paper describes a scheme that determines both the bit- and phase-flip errors (abbreviated as 'BiP') and mitigates them for distributed and networked quantum systems. To achieve this, we model the environment noise using general error models and obtain error calibration matrices in different computational bases for bit-phase-flip errors. Results reveal that BiP improves the fidelity beyond 95% for the received qubits compared to the state-of-the-art error mitigation method by correcting the elevation theta and azimuthal angles phi in the Bloch sphere representation.
A lightweight intelligent security agent is proposed that functions within the boundaries of a trusted execute environment and controls the detection of anomalies in computing processes when solving object detection t...
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As more distributed deep learning (DDL) jobs run in public clouds, their effective scheduling becomes a major challenge. Current studies prioritize the execution of jobs with less remaining time, which is known to be ...
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ISBN:
(纸本)9798350304817
As more distributed deep learning (DDL) jobs run in public clouds, their effective scheduling becomes a major challenge. Current studies prioritize the execution of jobs with less remaining time, which is known to be the best in reducing average job completion time (JCT). However, we observe that this approach does not work when the preemption for pausing and loading jobs weighs in;sometimes, the preemption overheads of DDL jobs take up to hundreds of seconds. This results in very ineffective scheduling, so in some cases, the first-in-first-out policy performs much better. This paper proposes a new scheduling framework called Xion that takes into account the preemption overheads and only preempts DDL jobs when it is beneficial. Our evaluation results demonstrate that Xion effectively reduces the average JCT by 19% and improves the waiting time by 1.64x.
IoT devices used in various applications, such as monitoring agricultural soil moisture, or urban air quality assessment, are typically battery-operated and energy-constrained. We develop a lightweight and distributed...
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ISBN:
(纸本)9798350363999;9798350364002
IoT devices used in various applications, such as monitoring agricultural soil moisture, or urban air quality assessment, are typically battery-operated and energy-constrained. We develop a lightweight and distributed cooperative sensing scheme that provides energy-efficient sensing of an area by reducing spatio-temporal overlaps in the coverage using a multi-sensor IoT network. Our "Sensing Together" solution includes two algorithms: distributed Task Adaptation (DTA) and distributed Block Scheduler (DBS), which coordinate the sensing operations of the IoT network through information shared using a distributed "token passing" protocol. DTA adapts the sensing rates from their "raw" values (optimized for each IoT device independently) to minimize spatial redundancy in coverage, while ensuring that a desired coverage threshold is met at all points in the covered area. DBS then schedules task execution times across all IoT devices in a distributed manner to minimize temporal overlap. On-device evaluation shows a small token size and execution times of less than 0.6s on average while simulations show average energy savings of 5% per IoT device under various weather conditions. Moreover, when devices had more significant coverage overlaps, energy savings exceeded 30% thanks to cooperative sensing. In simulations of larger networks, energy savings range on average between 3.34% and 38.53%, depending on weather conditions. Our solutions consistently demonstrate near-optimal performance under various scenarios, showcasing their capability to efficiently reduce temporal overlap during sensing task scheduling.
With the advancements in technologies such as artificial intelligence, communication, and microelectronics, unmanned systems have rapidly developed and gradually replaced humans in certain challenging and adversarial ...
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Quantum processing units (QPUs) are currently exclusively available from cloud vendors. However, with recent advancements, hosting QPUs will soon be possible everywhere. Existing work has yet to draw from research in ...
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ISBN:
(纸本)9798350304794
Quantum processing units (QPUs) are currently exclusively available from cloud vendors. However, with recent advancements, hosting QPUs will soon be possible everywhere. Existing work has yet to draw from research in edge computing to explore systems exploiting mobile QPUs, or how hybrid applications can benefit from distributed heterogeneous resources. Hence, this work presents an architecture for Quantum computing in the edge-cloud continuum. We discuss the necessity, challenges, and solution approaches for extending existing work on classical edge computing to integrate QPUs. We describe how warm-starting allows defining workflows that exploit the hierarchical resources spread across the continuum. Then, we introduce a distributed inference engine with hybrid classical-quantum neural networks (QNNs) to aid system designers in accommodating applications with complex requirements that incur the highest degree of heterogeneity. We propose solutions focusing on classical layer partitioning and quantum circuit cutting to demonstrate the potential of utilizing classical and quantum computation across the continuum. To evaluate the importance and feasibility of our vision, we provide a proof of concept that exemplifies how extending a classical partition method to integrate quantum circuits can improve the solution quality. Specifically, we implement a split neural network with optional hybrid QNN predictors. Our results show that extending classical methods with QNNs is viable and promising for future work.
The Open structure for allotted and Cooperative Media Algorithms (OADCMA) is an open-deliver framework imparting a plug-in platform that lets customers, without problem, develop distributed and cooperative media algor...
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