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Journal articles on the topic 'Remote Direct Memory Access (RDMA)'

Author: Grafiati

Published: 10 December 2022

Last updated: 27 January 2024

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1

Chen, Wei, Songping Yu, and Zhiying Wang. "Fast In-Memory Key–Value Cache System with RDMA." Journal of Circuits, Systems and Computers 28, no. 05 (2019): 1950074. http://dx.doi.org/10.1142/s0218126619500749.

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The quick advances of Cloud and the advent of Fog computing impose more and more critical demand for computing and data transfer of low latency onto the underlying distributed computing infrastructure. Remote direct memory access (RDMA) technology has been widely applied for its low latency of remote data access. However, RDMA gives rise to a host of challenges in accelerating in-memory key–value stores, such as direct remote memory writes, making the remote system more vulnerable. This study presents an in-memory key–value system based on RDMA, named Craftscached, which enables: (1) buffering

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Ziegler, Tobias, Viktor Leis, and Carsten Binnig. "RDMA Communciation Patterns." Datenbank-Spektrum 20, no. 3 (2020): 199–210. http://dx.doi.org/10.1007/s13222-020-00355-7.

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Abstract Remote Direct Memory Access (RDMA) is a networking protocol that provides high bandwidth and low latency accesses to a remote node’s main memory. Although there has been much work around RDMA, such as building libraries on top of RDMA or even applications leveraging RDMA, it remains a hard problem to identify the most suitable RDMA primitives and their combination for a given problem. While there have been some initial studies included in papers that aim to investigate selected performance characteristics of particular design choices, there has not been a systematic study to evaluate

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Ziegler, Tobias, Jacob Nelson-Slivon, Viktor Leis, and Carsten Binnig. "Design Guidelines for Correct, Efficient, and Scalable Synchronization using One-Sided RDMA." Proceedings of the ACM on Management of Data 1, no. 2 (2023): 1–26. http://dx.doi.org/10.1145/3589276.

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Remote data structures built with one-sided Remote Direct Memory Access (RDMA) are at the heart of many disaggregated database management systems today. Concurrent access to these data structures by thousands of remote workers necessitates a highly efficient synchronization scheme. Remarkably, our investigation reveals that existing synchronization schemes display substantial variations in performance and scalability. Even worse, some schemes do not correctly synchronize, resulting in rare and hard-to-detect data corruption. Motivated by these observations, we conduct the first comprehensive a

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Gerstenberger, Robert, Maciej Besta, and Torsten Hoefler. "Enabling Highly-Scalable Remote Memory Access Programming with MPI-3 One Sided." Scientific Programming 22, no. 2 (2014): 75–91. http://dx.doi.org/10.1155/2014/571902.

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Modern interconnects offer remote direct memory access (RDMA) features. Yet, most applications rely on explicit message passing for communications albeit their unwanted overheads. The MPI-3.0 standard defines a programming interface for exploiting RDMA networks directly, however, it's scalability and practicability has to be demonstrated in practice. In this work, we develop scalable bufferless protocols that implement the MPI-3.0 specification. Our protocols support scaling to millions of cores with negligible memory consumption while providing highest performance and minimal overheads. To ar

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Zhu, Bohong, Youmin Chen, Qing Wang, Youyou Lu, and Jiwu Shu. "Octopus + : An RDMA-Enabled Distributed Persistent Memory File System." ACM Transactions on Storage 17, no. 3 (2021): 1–25. http://dx.doi.org/10.1145/3448418.

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Non-volatile memory and remote direct memory access (RDMA) provide extremely high performance in storage and network hardware. However, existing distributed file systems strictly isolate file system and network layers, and the heavy layered software designs leave high-speed hardware under-exploited. In this article, we propose an RDMA-enabled distributed persistent memory file system, Octopus + , to redesign file system internal mechanisms by closely coupling non-volatile memory and RDMA features. For data operations, Octopus + directly accesses a shared persistent memory pool to reduce memory

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Koo, Bonmoo, Jaesang Hwang, Jonghyeok Park, and Wook-Hee Kim. "Converting Concurrent Range Index Structure to Range Index Structure for Disaggregated Memory." Applied Sciences 13, no. 20 (2023): 11130. http://dx.doi.org/10.3390/app132011130.

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In this work, we propose the Spread approach, which tailors a concurrent range index structure to a range index structure for disaggregated memory connected via RDMA (Remote Direct Memory Access). The Spread approach leverages the concept of tolerating transient inconsistencies in a concurrent range index structure to reduce the amount of expensive RDMA operations. Based on the Spread approach, we converted Blink-tree, a concurrent range index structure, to a range index structure for disaggregated memory called RF-tree. In our experimental study, RF-tree shows comparable performance to Sherma

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Hemmatpour, Masoud, Bartolomeo Montrucchio, and Maurizio Rebaudengo. "Communicating Efficiently on Cluster-Based Remote Direct Memory Access (RDMA) over InfiniBand Protocol." Applied Sciences 8, no. 11 (2018): 2034. http://dx.doi.org/10.3390/app8112034.

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Distributed systems are commonly built under the assumption that the network is the primary bottleneck, however this assumption no longer holds by emerging high-performance RDMA enabled protocols in datacenters. Designing distributed applications over such protocols requires a fundamental rethinking in communication components in comparison with traditional protocols (i.e., TCP/IP). In this paper, communication paradigms in existing systems and new possible paradigms have been investigated. Advantages and drawbacks of each paradigm have been comprehensively analyzed and experimentally evaluate

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Wang, Zhonghua, Yixing Guo, Kai Lu, et al. "Rcmp: Reconstructing RDMA-Based Memory Disaggregation via CXL." ACM Transactions on Architecture and Code Optimization 21, no. 1 (2024): 1–26. http://dx.doi.org/10.1145/3634916.

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Memory disaggregation is a promising architecture for modern datacenters that separates compute and memory resources into independent pools connected by ultra-fast networks, which can improve memory utilization, reduce cost, and enable elastic scaling of compute and memory resources. However, existing memory disaggregation solutions based on remote direct memory access (RDMA) suffer from high latency and additional overheads including page faults and code refactoring. Emerging cache-coherent interconnects such as CXL offer opportunities to reconstruct high-performance memory disaggregation. Ho

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Chen, Hongzhi, Changji Li, Chenguang Zheng, et al. "G-tran." Proceedings of the VLDB Endowment 15, no. 11 (2022): 2545–58. http://dx.doi.org/10.14778/3551793.3551813.

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Graph transaction processing poses unique challenges such as random data access due to the irregularity of graph structures, low throughput and high abort rate due to the relatively large read/write sets in graph transactions. To address these challenges, we present G-Tran, a remote direct memory access (RDMA)-enabled distributed in-memory graph database with serializable and snapshot isolation support. First, we propose a graph-native data store to achieve good data locality and fast data access for transactional updates and queries. Second, G-Tran adopts a fully decentralized architecture th

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Wei, Xingda, Rong Chen, Haibo Chen, and Binyu Zang. "XStore : Fast RDMA-Based Ordered Key-Value Store Using Remote Learned Cache." ACM Transactions on Storage 17, no. 3 (2021): 1–32. http://dx.doi.org/10.1145/3468520.

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RDMA ( Remote Direct Memory Access ) has gained considerable interests in network-attached in-memory key-value stores. However, traversing the remote tree-based index in ordered key-value stores with RDMA becomes a critical obstacle, causing an order-of-magnitude slowdown and limited scalability due to multiple round trips. Using index cache with conventional wisdom—caching partial data and traversing them locally—usually leads to limited effect because of unavoidable capacity misses, massive random accesses, and costly cache invalidations. We argue that the machine learning (ML) model is a pe

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Li, Shibao, Chengzhi Wang, Yunwu Zhang, et al. "FG-PFC: A Fine-Grained PFC Mechanism for Lossless RDMA." Journal of Physics: Conference Series 2575, no. 1 (2023): 012008. http://dx.doi.org/10.1088/1742-6596/2575/1/012008.

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Abstract Remote Direct Memory Access (RDMA) is widely deployed in data centers to improve the performance, efficiency, and reliability of data centers. Priority-based Flow Control (PFC) can ensure no packet loss as a necessary approach to achieve lossless RDMA. However, since PFC is a coarse-grained flow control mechanism based on port and priority, it can cause the head-of-line blocking problem and affect other flows, resulting in high latency. In this paper, we propose a fine-grained PFC mechanism (FG-PFC), which refines port and priority into flow granularity and further determines and paus

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Geng, Junjie, Jinyao Yan, and Yuan Zhang. "P4QCN: Congestion Control Using P4-Capable Device in Data Center Networks." Electronics 8, no. 3 (2019): 280. http://dx.doi.org/10.3390/electronics8030280.

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Modern data centers aim to offer very high throughput and ultra-low latency to meet the demands of applications such as online intensive services. Traditional TCP/IP stacks cannot meet these requirements due to their high CPU overhead and high-latency. Remote Direct Memory Access (RDMA) is an approach that can be designed to meet this demand. The mainstream transport protocol of RDMA over Ethernet is RoCE (RDMA over Converged Ethernet), which relies on Priority Flow Control (PFC) within the network to enable a lossless network. However, PFC is a coarse-grained protocol which can lead to proble

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Gil, Myeong-Seon, and Yang-Sae Moon. "SPinDP: A High-Speed Distributed Processing Platform for Sampling and Filtering Data Streams." Applied Sciences 13, no. 24 (2023): 12998. http://dx.doi.org/10.3390/app132412998.

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Recently, there has been an explosive generation of streaming data in various fields such as IoT and network attack detection, medical data monitoring, and financial trend analysis. These domains require precise and rapid analysis capabilities by minimizing noise from continuously generated raw data. In this paper, we propose SPinDP (Stream Purifier in Distributed Platform), an open source-based high-speed stream purification platform, to support real-time stream purification. SPinDP consists of four major components, Data Stream Processing Engine, Purification Library, Plan Manager, and Share

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KEE, YANGSUK, and SOONHOI HA. "AN EFFICIENT IMPLEMENTATION OF THE BSP PROGRAMMING LIBRARY FOR VIA." Parallel Processing Letters 12, no. 01 (2002): 65–77. http://dx.doi.org/10.1142/s0129626402000835.

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Virtual Interface Architecture(VIA) is a light-weight protocol for protected user-level zero-copy communication. In spite of the promised high performance of VIA, previous MPI implementations for GigaNet's cLAN revealed low communication performance. Two main sources of such low performance are the discrepancy in the communication model between MPI and VIA and the multi-threading overhead. In this paper, we propose a new implementation of the Bulk Synchronous Parallel(BSP) programming library for VIA called xBSP to overcome such problems. To the best of our knowledge, xBSP is the first impleme

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Krawczyk, Rafał Dominik, Tommaso Colombo, Niko Neufeld, Flavio Pisani, and Sébastien Valat. "Feasibility tests of RoCE v2 for LHCb event building." EPJ Web of Conferences 245 (2020): 01011. http://dx.doi.org/10.1051/epjconf/202024501011.

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This paper evaluates the utilization of Remote Direct Memory Access (RDMA) over Converged Ethernet (RoCE) for the Run 3 LHCb event building at CERN. The acquisition system of the detector will collect partial data from approximately 1000 separate detector streams. The total estimated throughput equals 32 Terabits per second. Full events will be assembled for subsequent processing and data selection in the filtering farm of the online trigger. High-throughput transmissions with up to 90% links utilization will be an essential feature of the system. The data exchange mechanism must support zero-

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Geetha J., Uday Bhaskar N, and Chenna Reddy P. "An Analytical Approach for Optimizing the Performance of Hadoop Map Reduce Over RoCE." International Journal of Information Communication Technologies and Human Development 10, no. 2 (2018): 1–14. http://dx.doi.org/10.4018/ijicthd.2018040101.

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Data intensive systems aim to efficiently process “big” data. Several data processing engines have evolved over past decade. These data processing engines are modeled around the MapReduce paradigm. This article explores Hadoop's MapReduce engine and propose techniques to obtain a higher level of optimization by borrowing concepts from the world of High Performance Computing. Consequently, power consumed and heat generated is lowered. This article designs a system with a pipelined dataflow in contrast to the existing unregulated “bursty” flow of network traffic, the ability to carry out both Ma

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Barghash, Ahmad, Lina Hammad, and Ammar Gharaibeh. "Traditional vs. Modern Data Paths: A Comprehensive Survey." Computers 11, no. 9 (2022): 132. http://dx.doi.org/10.3390/computers11090132.

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Recently, many new network paths have been introduced while old paths are still in use. The trade-offs remain vague and should be further addressed. Since last decade, the Internet is playing a major role in people’s lives, and the demand on the Internet in all fields has increased rapidly. In order to get a fast and secure connection to the Internet, the networks providing the service should get faster and more reliable. Many network data paths have been proposed in order to achieve the previous objectives since the 1970s. It started with the Transmission Control Protocol (TCP) and the User D

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Ponsard, Raphael, Nicolas Janvier, Jerome Kieffer, Dominique Houzet, and Vincent Fristot. "RDMA data transfer and GPU acceleration methods for high-throughput online processing of serial crystallography images." Journal of Synchrotron Radiation 27, no. 5 (2020): 1297–306. http://dx.doi.org/10.1107/s1600577520008140.

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The continual evolution of photon sources and high-performance detectors drives cutting-edge experiments that can produce very high throughput data streams and generate large data volumes that are challenging to manage and store. In these cases, efficient data transfer and processing architectures that allow online image correction, data reduction or compression become fundamental. This work investigates different technical options and methods for data placement from the detector head to the processing computing infrastructure, taking into account the particularities of modern modular high-per

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Zhuge, Qingfeng, Hao Zhang, Edwin Hsing-Mean Sha, Rui Xu, Jun Liu, and Shengyu Zhang. "Exploring Efficient Architectures on Remote In-Memory NVM over RDMA." ACM Transactions on Embedded Computing Systems 20, no. 5s (2021): 1–20. http://dx.doi.org/10.1145/3477004.

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Efficiently accessing remote file data remains a challenging problem for data processing systems. Development of technologies in non-volatile dual in-line memory modules (NVDIMMs), in-memory file systems, and RDMA networks provide new opportunities towards solving the problem of remote data access. A general understanding about NVDIMMs, such as Intel Optane DC Persistent Memory (DCPM), is that they expand main memory capacity with a cost of multiple times lower performance than DRAM. With an in-depth exploration presented in this paper, however, we show an interesting finding that the potentia

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Zhang, Yingqiang, Chaoyi Ruan, Cheng Li, et al. "Towards cost-effective and elastic cloud database deployment via memory disaggregation." Proceedings of the VLDB Endowment 14, no. 10 (2021): 1900–1912. http://dx.doi.org/10.14778/3467861.3467877.

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It is challenging for cloud-native relational databases to meet the ever-increasing needs of scaling compute and memory resources independently and elastically. The recent emergence of memory disaggregation architecture, relying on high-speed RDMA network, offers opportunities to build cost-effective and elastic cloud-native databases. There exist proposals to let unmodified applications run transparently on disaggregated systems. However, running relational database kernel atop such proposals experiences notable performance degradation and time-consuming failure recovery, offsetting the benef

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Nyrkov, Anatoliy, Konstantin Ianiushkin, Andrey Nyrkov, Yulia Romanova, and Vagiz Gaskarov. "Data structures access model for remote shared memory." E3S Web of Conferences 244 (2021): 07001. http://dx.doi.org/10.1051/e3sconf/202124407001.

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Recent achievements in high-performance computing significantly narrow the performance gap between single and multi-node computing, and open up opportunities for systems with remote shared memory. The combination of in-memory storage, remote direct memory access and remote calls requires rethinking how data organized, protected and queried in distributed systems. Reviewed models let us implement new interpretations of distributed algorithms allowing us to validate different approaches to avoid race conditions, decrease resource acquisition or synchronization time. In this paper, we describe th

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Hoefler, Torsten, Duncan Roweth, Keith Underwood, et al. "Data Center Ethernet and Remote Direct Memory Access: Issues at Hyperscale." Computer 56, no. 7 (2023): 67–77. http://dx.doi.org/10.1109/mc.2023.3261184.

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Stavrakakis, Dimitrios, Dimitra Giantsidi, Maurice Bailleu, Philip Sändig, Shady Issa, and Pramod Bhatotia. "Anchor: A Library for Building Secure Persistent Memory Systems." Proceedings of the ACM on Management of Data 1, no. 4 (2023): 1–31. http://dx.doi.org/10.1145/3626718.

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Cloud infrastructure is experiencing a shift towards disaggregated setups, especially with the introduction of the Compute Express Link (CXL) technology, where byte-addressable ersistent memory (PM) is becoming prominent. To fully utilize the potential of such devices, it is a necessity to access them through network stacks with equivalently high levels of performance (e.g., kernel-bypass, RDMA). While, these advancements are enabling the development of high-performance data management systems, their deployment on untrusted cloud environments also increases the security threats. To this end, w

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Rybintsev, Vladimir O. "Estimating the Performance of Computing Clusters without Accelerators Based on TOP500 Results." Mathematics 10, no. 19 (2022): 3580. http://dx.doi.org/10.3390/math10193580.

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Based on an analysis of TOP500 results, a functional dependence of the performance of clusters without accelerators according to the Linpack benchmark on their parameters was determined. The comparison of calculated and tested results showed that the estimation error does not exceed 2% for processors of different generations and manufacturers (Intel, AMD, Fujitsu) with different technologies of a system interconnect. The achieved accuracy of the calculation allows successful prediction of the performance of a cluster when its parameters (node performance, number of nodes, number of network int

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Cilardo, Alessandro. "Evaluation of HPC Acceleration and Interconnect Technologies for High-Throughput Data Acquisition." Sensors 21, no. 22 (2021): 7759. http://dx.doi.org/10.3390/s21227759.

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Efficient data movement in multi-node systems is a crucial issue at the crossroads of scientific computing, big data, and high-performance computing, impacting demanding data acquisition applications from high-energy physics to astronomy, where dedicated accelerators such as FPGA devices play a key role coupled with high-performance interconnect technologies. Building on the outcome of the RECIPE Horizon 2020 research project, this work evaluates the use of high-bandwidth interconnect standards, namely InfiniBand EDR and HDR, along with remote direct memory access functions for direct exposure

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Jang, Hankook, Sang-Hwa Chung, and Dae-Hyun Yoo. "Design and implementation of a protocol offload engine for TCP/IP and remote direct memory access based on hardware/software coprocessing." Microprocessors and Microsystems 33, no. 5-6 (2009): 333–42. http://dx.doi.org/10.1016/j.micpro.2009.03.001.

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Kalney, Marina S. "The role of humanities in the course of transmitting social memory." SHS Web of Conferences 103 (2021): 01019. http://dx.doi.org/10.1051/shsconf/202110301019.

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The article examines the contradiction between the transformation of information technology into an integral part of contemporary educational activities and the threat of reducing the quality of the educational process and dehumanizing the individual, resulting from the implementation of digital educational technologies. The need for distance work and remote communication is particularly evident in the situation of the pandemic, which requires, on the one hand, restricting direct interpersonal contacts to prevent the spread of infection, and on the other hand – continuing labor activity to pre

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Ye, Yuejin, Zhenya Song, Shengchang Zhou, et al. "swNEMO_v4.0: an ocean model based on NEMO4 for the new-generation Sunway supercomputer." Geoscientific Model Development 15, no. 14 (2022): 5739–56. http://dx.doi.org/10.5194/gmd-15-5739-2022.

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Abstract. The current large-scale parallel barrier of ocean general circulation models (OGCMs) makes it difficult to meet the computing demand of high resolution. Fully considering both the computational characteristics of OGCMs and the heterogeneous many-core architecture of the new Sunway supercomputer, swNEMO_v4.0, based on NEMO4 (Nucleus for European Modelling of the Ocean version 4), is developed with ultrahigh scalability. Three innovations and breakthroughs are shown in our work: (1) a highly adaptive, efficient four-level parallelization framework for OGCMs is proposed to release a new

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He, Chun Lin. "The Design and Implementation of the Information Remote Monitoring and Security Management System Based on Internet." Advanced Materials Research 846-847 (November 2013): 1414–17. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.1414.

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With the development of economy, the existence and application of the inflammable, explosive, toxic and harmful gases irresistible but dangerous at the same time in the industrial production application. for the sake of minimizing potential dangers, the remote security monitoring is of great significance. With the rapid development of network technology, the Internet network technology to implement the remote monitoring can effectively avoid some potential hazards in the industrial production and other dangerous things. We can draw a conclusion from the feedback that the effect of user experie

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Cai, Yan, Wenlong Xie, and Haihua Zhang. "Remote distributed monitoring system of switched reluctance motor." Measurement and Control 52, no. 3-4 (2019): 276–90. http://dx.doi.org/10.1177/0020294019836111.

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The reliable operation, dynamic performance analysis and control strategy research of a switched reluctance motor (SRM) require an online monitoring system to display and record its operating status. However, due to the large amount of data, the nonlinear electromagnetic characteristics and the harsh working environment of SRM, it is very difficult to monitor a SRM’s operation status in real time. In order to solve these problems, a new structure of the SRM monitoring system, which uses Digital Signal Processor (DSP) and the hardwired Transmission Control Protocol/Internet Protocol embedded Et

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Saeed, Dr Abdul Razzaq Ahmed. "Geographical and modern technologies." ALUSTATH JOURNAL FOR HUMAN AND SOCIAL SCIENCES 216, no. 2 (2016): 29–38. http://dx.doi.org/10.36473/ujhss.v216i2.589.

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It is the modern techniques that are used in modern geographical science in scientific applications three Systems is a technology GIS Gis (Geograbhical InFormation System), sensor system technology remote R.S (Remoote Sensing), GPS system technology (Global Positioning System) These three systems contributed to the great scientific revolution in all geographic modern science and its applications, as the GIS GIS technology is a way to organize or style of geographical and non-geographical information by computer and linked to geographical their positions depending on the specific coordinates. C

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Krawczyk, Rafał Dominik, Flavio Pisani, Tommaso Colombo, Markus Frank, and Niko Neufeld. "Ethernet evaluation in data distribution traffic for the LHCb filtering farm at CERN." EPJ Web of Conferences 251 (2021): 04001. http://dx.doi.org/10.1051/epjconf/202125104001.

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This paper evaluates the real-time distribution of data over Ethernet for the upgraded LHCb data acquisition cluster at CERN. The system commissioning ends in 2021 and its total estimated input throughput is 32 Terabits per second. After the events are assembled, they must be distributed for further data selection to the filtering farm of the online trigger. High-throughput and very low overhead transmissions will be an essential feature of such a system. In this work RoCE (Remote Direct Memory Access over Converged Ethernet) high-throughput Ethernet protocol and Ethernet flow control algorith

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Sheets, Payson. "PILGRIMAGES AND PERSISTENT SOCIAL MEMORY IN SPITE OF VOLCANIC DISASTERS IN THE ARENAL AREA, COSTA RICA." Ancient Mesoamerica 22, no. 2 (2011): 425–35. http://dx.doi.org/10.1017/s0956536111000265.

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AbstractAncient Costa Ricans in the Arenal area exhibited extraordinary persistence in landscape use and social memory, in spite of repeated catastrophes caused by explosive volcanic eruptions. The Cañales village on the south shore of Lake Arenal was struck by two large explosive eruptions during the Arenal phase (500 b.c.–a.d. 600). Following ecological recovery, the village was reoccupied after each of these eruptions. I argue that the people who reoccupied the village were direct descendants of pre-disaster villagers due to the fact that they reinstated use of the same path to the village

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Wu, Shiyu, Zhichao Xu, Feng Wang, Dongkai Yang, and Gongjian Guo. "An Improved Back-Projection Algorithm for GNSS-R BSAR Imaging Based on CPU and GPU Platform." Remote Sensing 13, no. 11 (2021): 2107. http://dx.doi.org/10.3390/rs13112107.

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Global Navigation Satellite System Reflectometry Bistatic Synthetic Aperture Radar (GNSS-R BSAR) is becoming more and more important in remote sensing because of its low power, low mass, low cost, and real-time global coverage capability. The Back Projection Algorithm (BPA) was usually selected as the GNSS-R BSAR imaging algorithm because it can process echo signals of complex geometric configurations. However, the huge computational cost is a challenge for its application in GNSS-R BSAR. Graphics Processing Units (GPU) provides an efficient computing platform for GNSS-R BSAR processing. In th

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Naing, Kaung Myat, Siridech Boonsang, Santhad Chuwongin, et al. "Automatic recognition of parasitic products in stool examination using object detection approach." PeerJ Computer Science 8 (August 17, 2022): e1065. http://dx.doi.org/10.7717/peerj-cs.1065.

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Background Object detection is a new artificial intelligence approach to morphological recognition and labeling parasitic pathogens. Due to the lack of equipment and trained personnel, artificial intelligence innovation for searching various parasitic products in stool examination will enable patients in remote areas of undeveloped countries to access diagnostic services. Because object detection is a developing approach that has been tested for its effectiveness in detecting intestinal parasitic objects such as protozoan cysts and helminthic eggs, it is suitable for use in rural areas where m

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Ma, Han, Shunlin Liang, Changhao Xiong, Qian Wang, Aolin Jia, and Bing Li. "Global land surface 250 m 8 d fraction of absorbed photosynthetically active radiation (FAPAR) product from 2000 to 2021." Earth System Science Data 14, no. 12 (2022): 5333–47. http://dx.doi.org/10.5194/essd-14-5333-2022.

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Abstract. The fraction of absorbed photosynthetically active radiation (FAPAR) is a critical land surface variable for carbon cycle modeling and ecological monitoring. Several global FAPAR products have been released and have become widely used; however, spatiotemporal inconsistency remains a large issue for the current products, and their spatial resolutions and accuracies can hardly meet the user requirements. An effective solution to improve the spatiotemporal continuity and accuracy of FAPAR products is to take better advantage of the temporal information in the satellite data using deep l

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Xing, Fei, Yi Ping Yao, Zhi Wen Jiang, and Bing Wang. "Fine-Grained Parallel and Distributed Spatial Stochastic Simulation of Biological Reactions." Advanced Materials Research 345 (September 2011): 104–12. http://dx.doi.org/10.4028/www.scientific.net/amr.345.104.

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To date, discrete event stochastic simulations of large scale biological reaction systems are extremely compute-intensive and time-consuming. Besides, it has been widely accepted that spatial factor plays a critical role in the dynamics of most biological reaction systems. The NSM (the Next Sub-Volume Method), a spatial variation of the Gillespie’s stochastic simulation algorithm (SSA), has been proposed for spatially stochastic simulation of those systems. While being able to explore high degree of parallelism in systems, NSM is inherently sequential, which still suffers from the problem of l

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Li, Pengfei, Yu Hua, Pengfei Zuo, Zhangyu Chen, and Jiajie Sheng. "A High-Performance RDMA-oriented Learned Key-Value Store for Disaggregated Memory Systems." ACM Transactions on Storage, September 5, 2023. http://dx.doi.org/10.1145/3620674.

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Disaggregated memory systems separate monolithic servers into different components, including compute and memory nodes, to enjoy the benefits of high resource utilization, flexible hardware scalability, and efficient data sharing. By exploiting the high-performance RDMA (Remote Direct Memory Access), the compute nodes directly access the remote memory pool without involving remote CPUs. Hence, the ordered key-value (KV) stores (e.g., B-trees and learned indexes) keep all data sorted to provide rang query service via the high-performance network. However, existing ordered KVs fail to work well

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Leong, Kin-Wai, Zhilong Li, and Yunqu Leon Liu. "Reliable multicast using remote direct memory access (RDMA) over a passive optical cross-connect fabric enhanced with wavelength division multiplexing (WDM)." APSIPA Transactions on Signal and Information Processing 8 (2019). http://dx.doi.org/10.1017/atsip.2019.17.

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It has been well studied that reliable multicast enables consistency protocols, including Byzantine Fault Tolerant protocols, for distributed systems. However, no transport-layer reliable multicast is used today due to limitations with existing switch fabrics and transport-layer protocols. In this paper, we introduce a layer-4 (L4) transport based on remote direct memory access (RDMA) datagram to achieve reliable multicast over a shared optical medium. By connecting a cluster of networking nodes using a passive optical cross-connect fabric enhanced with wavelength division multiplexing, all me

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Chen, Hanhua, Jie Yuan, Hai Jin, Yonghui Wang, Sijie Wu, and Zhihao Jiang. "RGraph: Asynchronous graph processing based on asymmetry of remote direct memory access." Software: Practice and Experience, April 26, 2021. http://dx.doi.org/10.1002/spe.2979.

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Sawant, Bhushan. "Latency and Throughput Optimization In Modern Networks." International Journal of Advanced Research in Science, Communication and Technology, May 30, 2021, 585–92. http://dx.doi.org/10.48175/ijarsct-1298.

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The paper briefly describes about the subject which is Latency and Throughput Optimization in Modern Networks. Modern applications are highly sensitive to communication delays and throughput. This paper surveys major attempts on reducing latency and increasing the throughput. These methods are surveyed on different networks and surrounding’s such as wired networks, wireless networks, application layer transport control, Remote Direct Memory Access, and machine learning based transport control. On one hand every user likes to send and receive their data as quickly as possible. On the other hand

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Teigen, Helene F., Cristina Paupini, and Henry Mainsah. "Intra-Acting With Technology During Remote Fieldwork in Homes: Curating Video Interviews and Drawing Methods." International Journal of Qualitative Methods 22 (January 2023). http://dx.doi.org/10.1177/16094069231185466.

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The ubiquity of remote research practices and the increased adoption of videoconferencing tools are forcing researchers to pay attention to the features of these technologies and how they shape the research encounter. This article draws on experience from a Norwegian research project about digital vulnerabilities and living with smart home technologies. Participants were invited to draw floor plans of their homes, enact everyday routines, and perform a house tour on camera. By enacting collective memory work, reviewing, and discussing fieldnotes and other materials from the interviews, the aut

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Larsson, Chari. "Suspicious Images: Iconophobia and the Ethical Gaze." M/C Journal 15, no. 1 (2011). http://dx.doi.org/10.5204/mcj.393.

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If iconophobia is defined as the suspicion and anxiety towards the power exerted by images, its history is an ancient one in all of its Platonic, Christian, and Judaic forms. At its most radical, iconophobia results in an act of iconoclasm, or the total destruction of the image. At the other end of the spectrum, contemporary iconophobia may be more subtle. Images are simply withdrawn from circulation with the aim of eliminating their visibility. In his book Images in Spite of All, French art historian Georges Didi-Huberman questions the tradition of suspicion and denigration governing visual r

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Ryan, Robin, and Uncle Ossie Cruse. "Welcome to the Peoples of the Mountains and the Sea: Evaluating an Inaugural Indigenous Cultural Festival." M/C Journal 22, no. 3 (2019). http://dx.doi.org/10.5204/mcj.1535.

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IntroductionFestivals, according to Chris Gibson and John Connell, are like “glue”, temporarily sticking together various stakeholders, economic transactions, and networks (9). Australia’s First Nations peoples see festivals as an opportunity to display cultural vitality (Henry 586), and to challenge a history which has rendered them absent (587). The 2017 Australia Council for the Arts Showcasing Creativity report indicates that performing arts by First Nations peoples are under-represented in Australia’s mainstream venues and festivals (1). Large Aboriginal cultural festivals have long thriv

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