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共 14644 条记录，以下是211-220 订阅

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A Precise and Scalable Biasing Network for Massive parallel Analog Applications 31

A Precise and Scalable Biasing Network for Massive Parallel ...

引用

31st conference on Electronics Circuits and systems

作者： Ahrens, Henning Graber, Markus Hofmann, Klaus Tech Univ Munich Munich Germany Tech Univ Darmstadt Darmstadt Germany

ISBN: (纸本)9798350377217;9798350377200

The demand for computing performance combined with higher energy efficiency is ever-increasing. Analog Computing paradigms are rising in popularity lately because they are potentially faster than digital implementations at a fraction of their energy consumption. For example, so-called oscillator-based Ising machines can solve combinatorial optimization problems very quickly and energy efficiently. They exploit the interaction between hundreds of identical oscillator nodes, forming a large network occupying the usable chip area. Also, spiking neural networks are a promising analog computing approach, which enables machine learning to be performed with low power consumption. Machine learning is currently one of the most significant factors in global energy demand for digital computers. Crucial for the analog computing principle are precise biasing currents because they accurately set mathematical coefficients and references that influence timing behaviors. So, bias current needs to be distributed to the hundreds of nodes spread across the whole die. We analyze two approaches for precise generation and distribution of biasing currents and two calibration methods for comparing and adjusting currents on a local scale and chip scale in the form of a case study on an oscillator-based Ising machine implemented in 28nm CMOS technology and targeting a maximum error of 1.5% while keeping the used area low.

关键词： Current Mirror Biasing Circuits Ring Oscillator Ising Machine Analog Computing

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PIOD: An Efficient parallel Iterative Algorithm for Solving Over-determined Equations 29

PIOD: An Efficient Parallel Iterative Algorithm for Solving ...

引用

29th IEEE international conference on parallel and distributed systems, ICPADS 2023

作者： Tian, Min Wei, Zhenguo Li, Yanlong Du, Wei Xiao, Lei Xu, Chaoshuai China Shandong Fundamental Research Center for Computer Science Shandong Provincial Key Laboratory of Computer Networks China Jinan Institute of Supercomputing Technology Jinan Key Laboratory of High Performance Computing China

ISBN: (纸本)9798350330717

The solution of over-determined equations plays a very important role in fields such as data fitting, signal processing, and machine learning. It is of great significance in predicting natural phenomena, optimizing engineering design, and other fields. However, there is currently no efficient method to solve over-determined equations, either being not accurate enough or consuming a lot of time. In this article, we propose a parallel iterative method for solving over-determined equations, called the PIOD algorithm. By using a sub-convergence condition to terminate the iterative calculation, we have developed a task partitioning strategy for the algorithm and implemented parallelization of the solution of over-determined equations on a distributed memory system. Our proposed algorithm achieves an average speedup of 152 ×times compared to the open-source Eigen solver. Additionally, it also achieves a parallel efficiency of over 30%. © 2023 IEEE.

关键词： conjugate gradient method MPI over-determined equations parallel algorithms parallel iterative methods

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Protection of Express Information Using parallel Computing 4

Protection of Express Information Using Parallel Computing

引用

4th international conference on Information Science, parallel and distributed systems, ISPDS 2023

作者： Zhang, Fangfang Liaoning Economy Vocational and Technical College Shenyang110122 China

ISBN: (纸本)9798350337181

In daily life, our express information items are stored in the server of express company. To avoid the leakage of the users' private information, this paper proposes a fast encryption algorithm to protect them. The proposed method first creates multiple threads. Then the information items are grouped into multiple groups with the same number of threads. Next, each thread employs a chaos-based encryption algorithm to encrypt the express information. Finally, the proposed method output the ciphered express information. Security analysis and efficiency test are carried out, and the results show that the proposed method can resist brute-force attack, statistical analysis, and have high efficiency compared with serial encryption mode. © 2023 IEEE.

关键词： Cryptography

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2024 3rd international conference on distributed Computing and High Performance Computing, DCHPC 2024

2024 3rd International Conference on Distributed Computing a...

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3rd international conference on distributed Computing and High Performance Computing, DCHPC 2024

ISBN: (纸本)9798350381580

The proceedings contain 21 papers. The topics discussed include: enhancing the performance of photonic crystal and gates with machine learning optimization;bitcoin price prediction based on financial data, technical indicators, and news headlines sentiment analysis using CNN and GRU deep learning algorithms;promoting cybersecurity knowledge via gamification: an innovative intervention design;modeling and verification of the causal broadcast algorithm using colored Petri Nets;GPU-based parallel technique for solving n-similarity problem in textual data mining;a novel approach for specification and verification of symmetric distributed algorithms using spin;optimizing geophysical workloads in high-performance computing: leveraging machine learning and transformer models for enhanced parallelism and processor allocation;and rational Jacobi kernel functions: a novel massively parallelizable orthogonal kernel for support vector machines.

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Performance Portability of the Chapel Language on Heterogeneous Architectures

Performance Portability of the Chapel Language on Heterogene...

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1st international conference on Smart Energy systems and Artificial Intelligence (SESAI)

作者： Milthorpe, Josh Wang, Xianghao Azizi, Ahmad Oak Ridge Natl Lab POB 2009 Oak Ridge TN 37830 USA Australian Natl Univ Canberra ACT Australia

ISBN: (纸本)9798350364613;9798350364606

A performance-portable application can run on a variety of different hardware platforms, achieving an acceptable level of performance without requiring significant rewriting for each platform. Several performance-portable programming models are now suitable for high-performance scientific application development, including OpenMP and Kokkos. Chapel is a parallel programming language that supports the productive development of high-performance scientific applications and has recently added support for GPU architectures through native code generation. Using three mini-apps BabelStream, miniBUDE, and TeaLeaf we evaluate the Chapel language's performance portability across various CPU and GPU platforms. In our evaluation, we replicate and build on previous studies of performance portability using mini-apps, comparing Chapel against OpenMP, Kokkos, and the vendor programming models CUDA and HIP. We find that Chapel achieves comparable performance portability to OpenMP and Kokkos and identify several implementation issues that limit Chapel's performance portability on certain platforms.

关键词： performance portability Chapel language mini app parallel programming general-purpose GPU progranuning

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Enhancing File Recovery from distributed File systems (DFSs) Using Erasure Coding and Replication 11

Enhancing File Recovery from Distributed File Systems (DFSs)...

引用

11th international conference on Reliability, Infocom Technologies and Optimization, ICRITO 2024

作者： Raj, Prince Sinha, Sapna Amity University Uttar Pradesh UP Noida India

ISBN: (纸本)9798350350357

Several solutions have been used in distributed file systems to increase data availability and dependability. Historically, replication techniques were the favored method for storing data in such systems. However, there has been a recent movement towards the use of erasure-coding (EC) methods to overcome space efficiency concerns. While EC is more successful than replication approaches in overcoming space efficiency difficulties, it introduces its own performance degradation factors, such as encoding and decoding delays, as well as input and output (I/O). To address these issues, this research proposes a buffering and combining strategy. This solution combines several I/O requests made throughout the encoding process in an EC-based distributed file system into a single operation, resulting in more efficient processing. In addition, the research recommends four recovery strategies to reduce the impact of decoding on disk input/output loads. These measures include disk input/output load distribution, random block layout, multi-thread parallel recovery, and the matrix recycling approach. All of these methods are intended to optimize the distribution of disk input/output loads produced during the decoding process. © 2024 IEEE.

关键词： Fault tolerance

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Efficient NTTRU Implementation on ARMv8 29

Efficient NTTRU Implementation on ARMv8

引用

29th IEEE international conference on parallel and distributed systems, ICPADS 2023

作者： Zhang, Zhuo Zheng, Jieyu Zhao, Yunlei Fudan University School of Computer Science Shanghai China

ISBN: (纸本)9798350330717

To tackle the challenges introduced by quantum computers to traditional public key cryptography, the domain of post-quantum cryptography (PQC) has taken center stage. Within this domain, the evaluation of computational performance emerges as a pivotal yardstick. Notably, NTTRU stands for one of the most efficient PQC schemes for key encapsulation mechanisms (KEM). This paper introduces the first optimized implementation of NTTRU on ARMv8 architecture. By leveraging the capabilities of the NEON engine, we strategically optimize the core modules of NTTRU: NTT/INTT, polynomial base case multiplication, and polynomial inversion. These optimizations have resulted in remarkable performance gains of 7.37×, 6.10×, 5.91×, and 4.43×, respectively when compared to the reference implementation. For the whole implementation, we achieve performance improvement of 2.85×, 2.36×, and 3.27× in key generation, encapsulation, and decapsulation respectively. © 2023 IEEE.

关键词： Key encapsulation mechanism NEON parallel optimization NTTRU Number Theoretic Transform Post-quantum cryptography

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A Study on Integrating HRRC Network for Robust CVR Solutions 15

A Study on Integrating HRRC Network for Robust CVR Solutions

引用

15th international conference on Ubiquitous and Future Networks (ICUFN)

作者： Choi, Sungsoo Kang, Jimyoung Korea Electrotechnol Res Inst KERI Power ICT Res Ctr 1271-19 Sa Dong Ansan South Korea

ISBN: (纸本)9798350385304;9798350385298

Conservation Voltage Reduction (CVR) technology optimizes distribution grid voltage to reduce power demand and losses, improving power system efficiency and stability. Effective real-time monitoring and control of power system voltage and load need a reliable communication network. Ensuring time-sensitive stability in measuring and sharing extensive data from distributed power resources is crucial, especially in unpredictable electrical environments. This paper proposes a solution in the form of a High Reliable Redundancy Communication (HRRC) network. HRRC aims to enhance the network performance and reliability of CVR technology for future power grid systems. The design and implementation of HRRC involves Ethernet-based High Availability Seamless Redundancy (HSR), parallel Redundancy Protocol (PRP), and Merging Unit (MU), offering robust solutions for CVR.

关键词： Conservation Voltage Reduction (CVR) High Reliable Redundancy Communication (HRRC) Merging Unit (MU) High-availability Seamless Redundancy (HSR) parallel Redundancy of Protocol (PRP) IEC 61850

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Visualization Analysis of Artificial Intelligence Applications in Rural Areas Based on Citespace 5

Visualization Analysis of Artificial Intelligence Applicatio...

引用

5th international conference on Information Science, parallel and distributed systems, ISPDS 2024

作者： Zhang, Qian Zhao, Jing Xia, Liping Shaanxi Normal University International Business School Xi'an China Changji University School of Economics and Management Changji China Changji University School of Information Engineering Changji China

ISBN: (纸本)9798350352719

With the rapid development of artificial intelligence, research on its application in rural development is increasing. This paper focuses on the literature on artificial intelligence empowering rural and agricultural development from the Web of Science core from 2014 to 2023. Using CiteSpace software, it conducts a visualization analysis of the literature over the past decade, examining the current status, hotpots, and trends of research from six aspects: publication quantity, disciplinary distribution, institutions, countries and regions distribution, research hotpots, and trends. Conclusion: Regarding the current status, there is rich international research on the application of artificial intelligence in rural areas, with an overall increasing trend in research quantity since 2018. Collaboration networks among institutions have begun to form, with China, the United States, and India conducting more research with higher impact. Regarding research hotpots, machine learning and deep learning are popular application technologies, with digital agriculture and precision agriculture being the main research objects over the past decade. Regarding research trends, integrating artificial intelligence technology with smart rural development and smart agriculture will further deepen. © 2024 IEEE.

关键词： artificial intelligence CiteSpace rural areas Visualization Analysis

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An Improved PSO-Based Maximum Power Point Tracking Algorithm for distributed Photovoltaic System Under Partial Shading

An Improved PSO-Based Maximum Power Point Tracking Algorithm...

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2024 international Exhibition and conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Asia 2024

作者： Zheng, Yanxuan Li, Yan Guo, Yangpeng Tian, Ye Wei, Fangyi Tian, Yi Electrical Engineering School of Beijing Jiaotong University China

ISBN: (纸本)9783800764150

Module-level power electronics with distributed characteristics makes it possible to significantly improve the output power of traditional centralized photovoltaic(PV) systems in the case of series or parallel mismatches. However, for distributed PV systems, when partial shading occurs in a single PV module, there will still be multiple local extreme points on its Power-voltage(P-V) characteristic curve, forming a multi-peak feature, which makes traditional maximum power point tracking(MPPT) methods ineffective and unable to find the true maximum power point of the module. Therefore, this paper takes advantage of module-level power electronics, and designs the four-switch Buck-Boost converter as the module-level power optimizer for distributed PV systems. At the same time, the paper focusing on the module multipeak seeking optimization problem in distributed PV power systems, proposes a module-level multi-peak MPPT optimization algorithm based on the improved particle swarm optimization(PSO), which utilizes an improved particle swarm optimization algorithm based on the traditional perturbation observation method in order to perform a global search for multi-peaks. Compared to the traditional PSO algorithm, the proposed algorithm operates on the principle of prioritizing particles that are closer to the global best power value, which filters the initial positions and search areas of the particles. This approach reduces the number of iterations needed in the tracking process, decreases power oscillations during transient tracking of the maximum power point, and improves the tracking accuracy of the traditional PSO algorithm. © VDE VERLAG GMBH.

关键词： Particle swarm optimization (PSO)

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