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Journal articles on the topic 'Cache cluster'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 February 2022

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1

Raghunathan, A., and K. Murugesan. "Performance-Enhanced Caching Scheme for Web Clusters for Dynamic Content." International Journal of Business Data Communications and Networking 7, no. 3 (2011): 16–36. http://dx.doi.org/10.4018/jbdcn.2011070102.

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In order to improve the QoS of applications, clusters of web servers are increasingly used in web services. Caching helps improve performance in web servers, but is largely exploited only for static web content. With more web applications using backend databases today, caching of dynamic content has a crucial role in web performance. This paper presents a set of cache management schemes for handling dynamic data in web clusters by sharing cached contents. These schemes use either automatic or expiry-based cache validation, and work with any type of request distribution. The techniques improve

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Yue, Shaoqi, and Qi Zhu. "A Mobility Prediction-Based Relay Cluster Strategy for Content Delivery in Urban Vehicular Networks." Applied Sciences 11, no. 5 (2021): 2157. http://dx.doi.org/10.3390/app11052157.

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In recent years, cache-enabled vehicles have been introduced to improve the efficiency of content delivery in vehicular networks. However, because of the high dynamic of network topology, it is a big challenge to increase the success probability of content delivery. In this paper, we propose a relay strategy based on cluster’s prediction trajectory for the situation of no cache near the request vehicles. In our strategy, the roadside unit (RSU) divides vehicles into clusters by their prediction trajectory, and then proactively caches contents at a cluster that will be about to meet the request

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Huang, Yuan Qiang. "Design and Implementation of Distributed Cache System in Cluster Environment." Applied Mechanics and Materials 635-637 (September 2014): 1530–34. http://dx.doi.org/10.4028/www.scientific.net/amm.635-637.1530.

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Within the layered enterprise application architecture, database is usually the bottleneck of system. Cache technology can significantly improve the system performance and scalability by caching the data in application layer. Firstly, this paper discussed the significance and importance of the Distributed Cache System. Our system provided two kinds of cache mechanism, including replicated cache and partitioned cache. Each of these has advantages and disadvantages. The design and implementation of this system covered problems including consistent hashing arithmetic. This paper described and ana

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Bhargava, Ravi, and Lizy K. John. "Improving dynamic cluster assignment for clustered trace cache processors." ACM SIGARCH Computer Architecture News 31, no. 2 (2003): 264–74. http://dx.doi.org/10.1145/871656.859649.

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5

Bao, Haizhou, Yiming Huo, Chuanhe Huang, Xiaodai Dong, and Wanyu Qiu. "Cluster-Based Cooperative Cache Deployment and Coded Delivery Strategy in C-V2X Networks." Wireless Communications and Mobile Computing 2021 (May 1, 2021): 1–19. http://dx.doi.org/10.1155/2021/8864004.

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Cellular vehicle-to-everything- (C-V2X-) based communications can support various content-oriented applications and have gained significant progress in recent years. However, the limited backhaul bandwidth and dynamic topology make it difficult to obtain the multimedia service with high-reliability and low-latency communication in C-V2X networks, which may degrade the quality of experience (QoE). In this paper, we propose a novel cluster-based cooperative cache deployment and coded delivery strategy for C-V2X networks to improve the cache hit ratio and response time, reduce the request-respons

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Gade, Sri Harsha, and Sujay Deb. "A Novel Hybrid Cache Coherence with Global Snooping for Many-core Architectures." ACM Transactions on Design Automation of Electronic Systems 27, no. 1 (2022): 1–31. http://dx.doi.org/10.1145/3462775.

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Cache coherence ensures correctness of cached data in multi-core processors. Traditional implementations of existing protocols make them unscalable for many core architectures. While snoopy coherence requires unscalable ordered networks, directory coherence is weighed down by high area and energy overheads. In this work, we propose Wireless-enabled Share-aware Hybrid (WiSH) to provide scalable coherence in many core processors. WiSH implements a novel Snoopy over Directory protocol using on-chip wireless links and hierarchical, clustered Network-on-Chip to achieve low-overhead and highly effic

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Ahmad, Fawad, Ayaz Ahmad, Irshad Hussain, Peerapong Uthansakul, and Suleman Khan. "Cooperation Based Proactive Caching in Multi-Tier Cellular Networks." Applied Sciences 10, no. 18 (2020): 6145. http://dx.doi.org/10.3390/app10186145.

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The limited caching capacity of the local cache enabled Base station (BS) decreases the cache hit ratio (CHR) and user satisfaction ratio (USR). However, Cache enabled multi-tier cellular networks have been presented as a promising candidate for fifth generation networks to achieve higher CHR and USR through densification of networks. In addition to this, the cooperation among the BSs of various tiers for cached data transfer, intensify its significance many folds. Therefore, in this paper, we consider maximization of CHR and USR in a multi-tier cellular network. We formulate a CHR and USR pro

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Omar, Hamza, and Omer Khan. "PRISM." ACM Transactions on Architecture and Code Optimization 18, no. 3 (2021): 1–25. http://dx.doi.org/10.1145/3450523.

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Multicores increasingly deploy safety-critical parallel applications that demand resiliency against soft-errors to satisfy the safety standards. However, protection against these errors is challenging due to complex communication and data access protocols that aggressively share on-chip hardware resources. Research has explored various temporal and spatial redundancy-based resiliency schemes that provide multicores with high soft-error coverage. However, redundant execution incurs performance overheads due to interference effects induced by aggressive resource sharing. Moreover, these schemes

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Chakraborty, Bidesh, Mamata Dalui, and Biplab K. Sikdar. "Design of a Reliable Cache System for Heterogeneous CMPs." Journal of Circuits, Systems and Computers 27, no. 14 (2018): 1850219. http://dx.doi.org/10.1142/s0218126618502195.

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The embedded system-on-a-chip (SoC), that integrates heterogeneous processors with variation in coherence protocol, adds complexity in maintaining coherency in the data caches. It further complicates the task of coherence verification in such systems. This work targets effective solution for coherence verification in heterogeneous chip multiprocessors (CMPs) through introduction of highly efficient verification unit. It is developed around the modeling tool of cellular automaton (CA) invented by von Neumann in 1950s. The modular and cascadable structure of CA ensures high scalability and robus

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Zam, Abdulaziz, and N. Movahedinia. "Performance Improvement of Cache Management In Cluster Based MANET." International Journal of Computer Network and Information Security 5, no. 10 (2013): 24–29. http://dx.doi.org/10.5815/ijcnis.2013.10.04.

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11

Guo, Yang, Zihui Ge, Bhuvan Urgaonkar, Prashant Shenoy, and Don Towsley. "Dynamic cache reconfiguration strategies for cluster-based streaming proxy." Computer Communications 29, no. 10 (2006): 1710–21. http://dx.doi.org/10.1016/j.comcom.2005.09.017.

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12

Li, Guohong, Olivier Temam, Zhenyu Liu, Sanchuan Guo, and Dongsheng Wang. "Cluster Cache Monitor: Leveraging the Proximity Data in CMP." International Journal of Parallel Programming 43, no. 6 (2014): 1054–77. http://dx.doi.org/10.1007/s10766-014-0339-0.

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Joshi, Kamini, and Sandeep Singh Kang. "Improved LEACH protocol using cache nodes for wireless sensor network." International Journal of Engineering & Technology 7, no. 2.27 (2018): 138. http://dx.doi.org/10.14419/ijet.v7i2.27.13690.

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The wireless sensor network is the decentralized type of network which can sense information and pass it to base station. The energy consumption is the major issue of WSN due to small of sensor nodes and far deployment of the network. The clustering is the efficient approach to increase lifetime of the sensor network. In the approach of clustering cluster head are selected for the data aggregation. The fuzzy logic rules are derived based on node energy, distance to base station for the cluster head selection, which increase lifetime of sensor nodes in the existing system. In this research work

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14

Chauhan, Naveen, Lalit K. Awasthi, Narottam Chand, R. C. Joshi, and Manoj Misra. "Cooperative Caching in Mobile Ad Hoc Networks." International Journal of Mobile Computing and Multimedia Communications 3, no. 3 (2011): 20–35. http://dx.doi.org/10.4018/jmcmc.2011070102.

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Mobile ad hoc network (MANET) presents a constrained communication environment due to fundamental limitations of client’s resources, insufficient wireless bandwidth and users’ frequent mobility. MANETs have many distinct characteristics which distinguish them from other wireless networks. Due to frequent network disconnection, data availability is lower than traditional wired networks. Cooperative caching helps MANETs in alleviating the situation of non availability of data. In this paper, the authors present a scheme called global cluster cooperation (GCC) for caching in mobile ad hoc network

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Ganesarathinam. "CLUSTER BASED CACHE CONSISTENCY USING AGENT TECHNIQUE IN MOBILE ENVIRONMENT." Journal of Computer Science 10, no. 4 (2014): 614–22. http://dx.doi.org/10.3844/jcssp.2014.614.622.

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Kwak, Hu-Keun, and Kyu-Sik Chung. "A Shared Cache Directory based Wireless Internet Proxy Server Cluster." KIPS Transactions:PartA 13A, no. 4 (2006): 343–50. http://dx.doi.org/10.3745/kipsta.2006.13a.4.343.

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17

Alsaiari, Najat, and Ayman Fayoumi. "ENHANCE PERFORMANCE OF WEB PROXY CACHE CLUSTER USING CLOUD COMPUTING." Advances in Science and Technology – Research Journal 7, no. 20 (2013): 1–10. http://dx.doi.org/10.5604/20804075.1073042.

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18

Kim, Kyungbaek, and Daeyeon Park. "Reducing outgoing traffic of proxy cache by using client-cluster." Journal of Communications and Networks 8, no. 3 (2006): 330–38. http://dx.doi.org/10.1109/jcn.2006.6182773.

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19

Akbari-Bengar, Davood, Ali Ebrahimnejad, Homayun Motameni, and Mehdi Golsorkhtabaramiri. "Improving of cache memory performance based on a fuzzy clustering based page replacement algorithm by using four features." Journal of Intelligent & Fuzzy Systems 39, no. 5 (2020): 7899–908. http://dx.doi.org/10.3233/jifs-201360.

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Internet is one of the most influential new communication technologies has influenced all aspects of human life. Extensive use of the Internet and the rapid growth of network services have increased network traffic and ultimately a slowdown in internet speeds around the world. Such traffic causes reduced network bandwidth, server response latency, and increased access time to web documents. Cache memory is used to improve CPU performance and reduce response time. Due to the cost and limited size of cache compared to other devices that store information, an alternative policy is used to select

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Edwards, Nicholas Jain, David Tonny Brain, Stephen Carinna Joly, and Mariana Karry Masucato. "Hadoop distributed file system mechanism for processing of large datasets across computers cluster using programming techniques." International research journal of management, IT and social sciences 6, no. 6 (2019): 1–16. http://dx.doi.org/10.21744/irjmis.v6n6.739.

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In this paper, we have proved that the HDFS I/O operations performance is getting increased by integrating the set associativity in the cache design and changing the pipeline topology using fully connected digraph network topology. In read operation, since there is huge number of locations (words) at cache compared to direct mapping the chances of miss ratio is very low, hence reducing the swapping of the data between main memory and cache memory. This is increasing the memory I/O operations performance. In Write operation instead of using the sequential pipeline we need to construct the fully

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Siddiqui, Isma Farah, Nawab Muhammad Faseeh Qureshi, Bhawani Shankar Chowdhry, and Muhammad Aslam Uqaili. "Pseudo-Cache-Based IoT Small Files Management Framework in HDFS Cluster." Wireless Personal Communications 113, no. 3 (2020): 1495–522. http://dx.doi.org/10.1007/s11277-020-07312-3.

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Caspart, René, Max Fischer, Manuel Giffels, et al. "Setup and commissioning of a high-throughput analysis cluster." EPJ Web of Conferences 245 (2020): 07007. http://dx.doi.org/10.1051/epjconf/202024507007.

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Current and future end-user analyses and workflows in High Energy Physics demand the processing of growing amounts of data. This plays a major role when looking at the demands in the context of the High-Luminosity-LHC. In order to keep the processing time and turn-around cycles as low as possible analysis clusters optimized with respect to these demands can be used. Since hyper converged servers offer a good combination of compute power and local storage, they form the ideal basis for these clusters. In this contribution we report on the setup and commissioning of a dedicated analysis cluster

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Park, Dae Jin, Jeong Hun Cho, and Doo San Cho. "Data Cluster Detection for Low Power Embedded Memory Subsystems." Applied Mechanics and Materials 789-790 (September 2015): 833–36. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.833.

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This work proposes a technique for optimizing data placement of application-wide reused data so that it resides in scratchpad memory of processing elements in multiprocessor system on chips. The proposed technique identifies data elements with fine granularity that can profitably be placed in the scratchpad memories to maximize performance and energy gains. We present a heuristic approach that efficiently exploits the scratchpad memories using memory access footprint. Our experimental results indicate that our approach is able to reduce energy consumption by 30% over cache based memory subsyst

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Kwak, Hukeun, Andrew Sohn, and Kyusik Chung. "Dynamic information-based scalable hashing on a cluster of web cache servers." Concurrency and Computation: Practice and Experience 24, no. 3 (2011): 322–40. http://dx.doi.org/10.1002/cpe.1830.

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Nijim, Mais, Xiao Qin, and Muhittin Yilmaz. "CaPaS: an optimal security-aware cache replacement algorithm for cluster storage systems." International Journal of High Performance Systems Architecture 3, no. 4 (2011): 216. http://dx.doi.org/10.1504/ijhpsa.2011.045506.

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26

Afshang, Mehrnaz, Harpreet S. Dhillon, and Peter Han Joo Chong. "Fundamentals of Cluster-Centric Content Placement in Cache-Enabled Device-to-Device Networks." IEEE Transactions on Communications 64, no. 6 (2016): 2511–26. http://dx.doi.org/10.1109/tcomm.2016.2554547.

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Ji, Xuechun, Maoxian Zhao, Mingyu Zhai, and Qingxi Wu. "Query Execution Optimization in Spark SQL." Scientific Programming 2020 (February 7, 2020): 1–12. http://dx.doi.org/10.1155/2020/6364752.

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Spark SQL is a big data processing tool for structured data query and analysis. However, due to the execution of Spark SQL, there are multiple times to write intermediate data to the disk, which reduces the execution efficiency of Spark SQL. Targeting on the existing issues, we design and implement an intermediate data cache layer between the underlying file system and the upper Spark core to reduce the cost of random disk I/O. By using the query pre-analysis module, we can dynamically adjust the capacity of cache layer for different queries. And the allocation module can allocate proper memor

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Li, Lincan, Chiew Foong Kwong, Qianyu Liu, Pushpendu Kar, and Saeid Pourroostaei Ardakani. "A Novel Cooperative Cache Policy for Wireless Networks." Wireless Communications and Mobile Computing 2021 (August 6, 2021): 1–18. http://dx.doi.org/10.1155/2021/5568935.

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Mobile edge caching is an emerging approach to manage high mobile data traffic in fifth-generation wireless networks that reduces content access latency and offloading data traffic of backhaul links. This paper proposes a novel cooperative caching policy based on long short-term memory (LSTM) neural networks considering the characteristics between the features of the heterogeneous layers and the user moving speed. Specifically, LSTM is applied to predict content popularity. Size-weighted content popularity is utilised to balance the impact of the predicted content popularity and content size.

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Rajan, Mahesh, Douglas Doerfler, Courtenay T. Vaughan, Marcus Epperson, and Jeff Ogden. "Application Performance on the Tri-Lab Linux Capacity Cluster - TLCC." International Journal of Distributed Systems and Technologies 1, no. 2 (2010): 23–39. http://dx.doi.org/10.4018/jdst.2010040102.

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In a recent acquisition by DOE/NNSA several large capacity computing clusters called TLCC have been installed at the DOE labs: SNL, LANL and LLNL. TLCC architecture with ccNUMA, multi-socket, multi-core nodes, and InfiniBand interconnect, is representative of the trend in HPC architectures. This paper examines application performance on TLCC contrasting them with Red Storm/Cray XT4. TLCC and Red Storm share similar AMD processors and memory DIMMs. Red Storm however has single socket nodes and custom interconnect. Micro-benchmarks and performance analysis tools help understand the causes for th

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Zhou, Min, Onkar Sahni, Mark S. Shephard, Christopher D. Carothers, and Kenneth E. Jansen. "Adjacency-Based Data Reordering Algorithm for Acceleration of Finite Element Computations." Scientific Programming 18, no. 2 (2010): 107–23. http://dx.doi.org/10.1155/2010/273921.

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Effective use of the processor memory hierarchy is an important issue in high performance computing. In this work, a part level mesh topological traversal algorithm is used to define a reordering of both mesh vertices and regions that increases the spatial locality of data and improves overall cache utilization during on processor finite element calculations. Examples based on adaptively created unstructured meshes are considered to demonstrate the effectiveness of the procedure in cases where the load per processing core is varied but balanced (e.g., elements are equally distributed across co

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Mahgoub, Imad, Mazin Yousif, and Abu Asaduzzaman. "Evaluation of memory latency in cluster-based cache-coherent multiprocessor systems with different interconnection topologies." Computers & Electrical Engineering 26, no. 3-4 (2000): 207–20. http://dx.doi.org/10.1016/s0045-7906(99)00042-7.

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Lee, Kwang-Won, Yoon-Cheol Hwang, and Ryum-Duck Oh. "An Energy Efficient Query Processing Mechanism using Cache Filtering in Cluster-based Wireless Sensor Networks." Journal of the Korea Society of Computer and Information 15, no. 8 (2010): 149–56. http://dx.doi.org/10.9708/jksci.2010.15.8.149.

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Fethellah, Nour El Houda, Hafida Bouziane, and Abdallah Chouarfia. "New Efficient Caching Strategy based on Clustering in Named Data Networking." International Journal of Interactive Mobile Technologies (iJIM) 13, no. 12 (2019): 104. http://dx.doi.org/10.3991/ijim.v13i12.11403.

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<p>The Named Data Networking NDN is one of the most proposed architecture for the new model of Internet communications based on contents distribution, called Information-Centric Network ICN. It is widely accepted by the research community since it has become dominant in ICN design that resolves TCP-IP based Internet problems such as bandwidth, delay, location dependent and congestion. Based on location host IP addresses, TCP-IP designed for Peer-to-Peer communication P2P. NDN architecture is oriented Content Centric Networking CCN, where the data is stored on routers and distributed to u

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Hendricks, Paul. "Clark’s Nutcrackers (Nucifraga columbiana) caching Whitebark Pine (Pinus albicaulis) seeds in trees." Canadian Field-Naturalist 132, no. 3 (2019): 285–88. http://dx.doi.org/10.22621/cfn.v132i3.1992.

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On 17 September 2017, I observed two Clark’s Nutcrackers (Nucifraga columbiana) from 8–10 m distance as they cached seeds in a stand of dead Whitebark Pines (Pinus albicaulis) at 2500 m elevation on Saint Mary Peak in the Bitterroot Mountains of Ravalli County, Montana. Over 5 minutes, the nutcrackers created 14 caches in seven different multi-trunk tree clusters in an area of about 50 m2. All caches appeared to be single Whitebark Pine seeds, positioned 2–5 m (mostly 3–4 m) above ground in dead trees. Of the 14 caches, three were placed under loose pieces of bark on a trunk (one) or large lim

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Hwak, Hu-Keun, and Kyu-Sik Chung. "Hashing Method with Dynamic Server Information for Load Balancing on a Scalable Cluster of Cache Servers." KIPS Transactions:PartA 14A, no. 5 (2007): 269–78. http://dx.doi.org/10.3745/kipsta.2007.14-a.5.269.

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Xiang, Min, Yuzhou Jiang, Zhong Xia, and Chunmei Huang. "Consistent hashing with bounded loads and virtual nodes-based load balancing strategy for proxy cache cluster." Cluster Computing 23, no. 4 (2020): 3139–55. http://dx.doi.org/10.1007/s10586-020-03076-4.

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Kunzman, David M., and Laxmikant V. Kalé. "Programming Heterogeneous Clusters with Accelerators Using Object-Based Programming." Scientific Programming 19, no. 1 (2011): 47–62. http://dx.doi.org/10.1155/2011/525717.

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Heterogeneous clusters that include accelerators have become more common in the realm of high performance computing because of the high GFlop/s rates such clusters are capable of achieving. However, heterogeneous clusters are typically considered hard to program as they usually require programmers to interleave architecture-specific code within application code. We have extended the Charm++ programming model and runtime system to support heterogeneous clusters (with host cores that differ in their architecture) that include accelerators. We are currently focusing on clusters that include commo

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Wang, Xin. "Research on Software Optimization Solutions of E-Commerce Site." Applied Mechanics and Materials 198-199 (September 2012): 626–30. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.626.

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There are generally two types of E-commerce platform optimized programs: hardware optimization and software optimization, This paper first analyzes the system optimization techniques of software optimization, Including dynamic load optimization technology and cluster technology; Then studies the database performance optimization methods from the table, connection pooling, query and several other aspects; Finally to carry on the research to optimization electronic commerce platform used the cache technology. Proposes a universal significance of E-commerce platform software optimization solution

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Gu, Bongen, and Yoonsik Kwak. "MAP task allocation strategy in an ARM-based Hadoop cluster by using local storage as split cache." International Journal of Advanced Media and Communication 6, no. 1 (2016): 65. http://dx.doi.org/10.1504/ijamc.2016.079108.

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Siddiqa, Ayesha, Muhammad Diyan, Muhammad Toaha Raza Khan, Malik Muhammad Saad, and Dongkyun Kim. "Mitigating Broadcasting Storm Using Multihead Nomination Clustering in Vehicular Content Centric Networks." Electronics 10, no. 18 (2021): 2270. http://dx.doi.org/10.3390/electronics10182270.

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Vehicles are highly mobile nodes; therefore, they frequently change their topology. To maintain a stable connection with the server in high-speed vehicular networks, the handover process is restarted again to satisfy the content requests. To satisfy the requested content, a vehicular-content-centric network (VCCN) is proposed. The proposed scheme adopts in-network caching instead of destination-based routing to satisfy the requests. In this regard, various routing protocols have been proposed to increase the communication efficiency of VCCN. Despite disruptive communication links due to head v

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Zhi, Xi Hu, and Ai Di Zhi. "Coordination Algorithm Design of the Load Sharing Proxy Servers for Streaming Media." Applied Mechanics and Materials 344 (July 2013): 265–69. http://dx.doi.org/10.4028/www.scientific.net/amm.344.265.

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With the rapid development of streaming media applications, clustered streaming media proxy servers have become the mainstream of high-end streaming media proxy. To increase the IO throughput capacity of streaming media proxy servers, the most effective method is middle-ware technology in which several servers are bridged together to form a proxy cache server cluster, and the key is the coordination of individual proxy servers. The decision problem of the user request dispatch actually belongs to NP-complete. This article proposes an online coordination algorithm for the load sharing streaming

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Tun, Wang, J. Pourqasem, and S. A. Edalatpanah. "Optimizing Resource Discovery Technique in the P2P Grid Systems." Wireless Communications and Mobile Computing 2020 (January 4, 2020): 1–9. http://dx.doi.org/10.1155/2020/1069824.

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Distributed discovery service is a main concept in the scalable and dynamic grid environments. In this paper, based on the super-peer technique, we propose a new topology for the grid discovery service. The model is designed in such a way that each super-peer within the cluster has the routing indices (RIs) based on cobweb and uses the hop-count routing index (HRI) to select the best neighbor. Besides, each super-peer includes a cache table, which stores the query and the query results. Furthermore, from the point of view of the response time and the number of submitted messages, we compare th

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Arroyo, Maricela, Carlos Couder-Castañeda, Alfredo Trujillo-Alcantara, Israel-Enrique Herrera-Diaz, and Nain Vera-Chavez. "A Performance Study of a Dual Xeon-Phi Cluster for the Forward Modelling of Gravitational Fields." Scientific Programming 2015 (2015): 1–14. http://dx.doi.org/10.1155/2015/316012.

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With at least 60 processing cores, the Xeon-Phi coprocessor is a truly multicore architecture, which consists of an interconnection speed among cores of 240 GB/s, two levels of cache memory, a theoretical performance of 1.01 Tflops, and programming flexibility, all making the Xeon-Phi an excellent coprocessor for parallelizing applications that seek to reduce computational times. The objective of this work is to migrate a geophysical application designed to directly calculate the gravimetric tensor components and their derivatives and in this way research the performance of one and two Xeon-Ph

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Huang, Fei Xue, and Zhi Jie Li. "A Self-Adaptive Model of Two-Level for Dynamic Peer-to-Peer Networks." Key Engineering Materials 460-461 (January 2011): 479–84. http://dx.doi.org/10.4028/www.scientific.net/kem.460-461.479.

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The present thesis puts forward a hierarchical P2P model: self-adaptive P2P model of two-level. Super peers compose a self-adaptive DHT network on the top layer, and lower ordinary peers take super peer in the same group as their center server to form a cluster. Data are stored in ordinary peers and super peers hold indices of data and answer for request from ordinary peers. When super peer join or leave, it does not maintain consistency of entire network’s logic topology but only update routing table of its predecessor and successor, besides, super peers update their routing table cache when

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Yang, Juncheng, Yao Yue, and K. V. Rashmi. "A Large-scale Analysis of Hundreds of In-memory Key-value Cache Clusters at Twitter." ACM Transactions on Storage 17, no. 3 (2021): 1–35. http://dx.doi.org/10.1145/3468521.

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Modern web services use in-memory caching extensively to increase throughput and reduce latency. There have been several workload analyses of production systems that have fueled research in improving the effectiveness of in-memory caching systems. However, the coverage is still sparse considering the wide spectrum of industrial cache use cases. In this work, we significantly further the understanding of real-world cache workloads by collecting production traces from 153 in-memory cache clusters at Twitter, sifting through over 80 TB of data, and sometimes interpreting the workloads in the cont

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Qureshi, Yasir Mahmood, William Andrew Simon, Marina Zapater, Katzalin Olcoz, and David Atienza. "Gem5-X." ACM Transactions on Architecture and Code Optimization 18, no. 4 (2021): 1–27. http://dx.doi.org/10.1145/3461662.

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The increasing adoption of smart systems in our daily life has led to the development of new applications with varying performance and energy constraints, and suitable computing architectures need to be developed for these new applications. In this article, we present gem5-X, a system-level simulation framework, based on gem-5, for architectural exploration of heterogeneous many-core systems. To demonstrate the capabilities of gem5-X, real-time video analytics is used as a case-study. It is composed of two kernels, namely, video encoding and image classification using convolutional neural netw

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Chang, Bao-Rong, Hsiu-Fen Tsai, Yun-Che Tsai, Chin-Fu Kuo, and Chi-Chung Chen. "Integration and optimization of multiple big data processing platforms." Engineering Computations 33, no. 6 (2016): 1680–704. http://dx.doi.org/10.1108/ec-08-2015-0247.

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Purpose – The purpose of this paper is to integrate and optimize a multiple big data processing platform with the features of high performance, high availability and high scalability in big data environment. Design/methodology/approach – First, the integration of Apache Hive, Cloudera Impala and BDAS Shark make the platform support SQL-like query. Next, users can access a single interface and select the best performance of big data warehouse platform automatically by the proposed optimizer. Finally, the distributed memory storage system Memcached incorporated into the distributed file system,

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Wang, Hui, Huansheng Chen, Qizhong Wu, et al. "GNAQPMS v1.1: accelerating the Global Nested Air Quality Prediction Modeling System (GNAQPMS) on Intel Xeon Phi processors." Geoscientific Model Development 10, no. 8 (2017): 2891–904. http://dx.doi.org/10.5194/gmd-10-2891-2017.

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Abstract. The Global Nested Air Quality Prediction Modeling System (GNAQPMS) is the global version of the Nested Air Quality Prediction Modeling System (NAQPMS), which is a multi-scale chemical transport model used for air quality forecast and atmospheric environmental research. In this study, we present the porting and optimisation of GNAQPMS on a second-generation Intel Xeon Phi processor, codenamed Knights Landing (KNL). Compared with the first-generation Xeon Phi coprocessor (codenamed Knights Corner, KNC), KNL has many new hardware features such as a bootable processor, high-performance i

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Fung, Larry S. K., Mohammad O. Sindi, and Ali H. Dogru. "Multiparadigm Parallel Acceleration for Reservoir Simulation." SPE Journal 19, no. 04 (2014): 716–25. http://dx.doi.org/10.2118/163591-pa.

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Summary With the advent of the multicore central-processing unit (CPU), today's commodity PC clusters are effectively a collection of interconnected parallel computers, each with multiple multicore CPUs and large shared random access memory (RAM), connected together by means of high-speed networks. Each computer, referred to as a compute node, is a powerful parallel computer on its own. Each compute node can be equipped further with acceleration devices such as the general-purpose graphical processing unit (GPGPU) to further speed up computational-intensive portions of the simulator. Reservoir

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Shi, Erying. "Design of Optoelectronic Hybrid Switching High Performance Computing Internet." Journal of Nanoelectronics and Optoelectronics 16, no. 1 (2021): 104–13. http://dx.doi.org/10.1166/jno.2021.2908.

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Optoelectronic hybrid network technology is mixed with pure electric packet switching network, which can improve network capacity and reduce power consumption. However, the long configuration time and complex management of optical circuit switch affect the performance of optoelectronic hybrid network. Therefore, a new optoelectronic hybrid network architecture (BET) is designed. The network architecture consists of Ethernet electric packet switching network and optical wavelength routing network. The signal receiving and dispatching of optical routing network is realized by circular arrayed wa

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