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IEEE 14th International Conference on Cloud Computing (CLOUD)

作者： Wei, Xing Hu, Huiqi Zhou, Aoying East China Normal Univ Sch Data Sci & Engn Shanghai Peoples R China

ISBN: (纸本)9781665400602

distributed shared memory abstraction can organize a cluster of machine nodes to empower the application execution with the big memory spaces and abundant parallelism. However, when deploying an application on the distributed shared memory, these loosely-coupled machine nodes may also make the execution of its tasks suffer from the frequent network traffic based on the existing scheduling strategies. In this paper, we conduct a detailed case study to reveal that the network-intensive task and poor data locality contribute to the major part of network traffic, which could impose the network burden on the execution. To address this issue, we propose the network-sensitive scheduling that fully takes the network traffic into the consideration of scheduling on DSM. The experimental results reveal that this network-sensitive scheduling ran reduce the execution time by up to 32%, and decrease the network traffic by 18% under the real-world cases.

关键词： distributed shared memory Task Scheduling Network Bound Data Locality

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Fundamentals for consistent event ordering in distributed shared memory systems

Fundamentals for consistent event ordering in distributed sh...

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International Conference on Parallel and distributed Processing Techniques and Applications

作者： Preissinger, J Landes, T Tech Univ Munich Inst Informat D-8000 Munich Germany

ISBN: (纸本)1932415610

A large number of tasks in distributed systems can be traced down to the fundamental problem of attaining a consistent global view on a distributed computation. This problem has been addressed by a number of studies which focus on systems with message passing as their only means of interprocess communication. In the paper at hand we extend this restricted system model by additionally accounting for an abstract memory to be shared by the processes. We specify, necessary and sufficient conditions for constructing a consistent global view on such systems and present helpful definitions, which are meant to be a solid formal base for further studies.

关键词： distributed system distributed shared memory consistency event order observation

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Partial Failure Resilient memory Management System for (CXL-based) distributed shared memory 23

Partial Failure Resilient Memory Management System for (CXL-...

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29th ACM Symposium on Operating Systems Principles (SOSP)

作者： Zhang, Mingxing Ma, Teng Hua, Jinqi Liu, Zheng Chen, Kang Ding, Ning Du, Fan Jiang, Jinlei Ma, Tao Wu, Yongwei Tsinghua Univ Beijing Peoples R China Alibaba Grp Hangzhou Peoples R China Zhongguancun Lab Beijing Peoples R China Intel Santa Clara CA USA

ISBN: (纸本)9798400702297

The efficiency of distributed shared memory (DSM) has been greatly improved by recent hardware technologies. But, the difficulty of distributed memory management can still be a major obstacle to the democratization of DSM, especially when a partial failure of the participating clients (e.g., due to crashed processes or machines) should be tolerated. In this paper, we present CXL-SHM, an automatic distributed memory management system based on reference counting. The reference count maintenance in CXL-SHM is implemented with a special era-based non-blocking algorithm. Thus, there are no blocking synchronization, memory leak, double free, and wild pointer problems, even if some participating clients unexpectedly fail without freeing their possessed memory references. We evaluated our system on real CXL hardware with both micro-benchmarks and end-to-end applications, which demonstrate the efficiency of CXL-SHM and the simplicity/flexibility of using CXL-SHM to build efficient distributed applications.

关键词： CXL distributed shared memory Non-blocking

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A Design and Implementation of SDN Multicast for distributed shared memory 9

A Design and Implementation of SDN Multicast for Distributed...

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International Conference on Future Generation Communication and Networking

作者： Gao, Qiang Tong, Weiqin Kausar, Samina Zheng, Shengan Shanghai Univ Sch Comp Engn & Sci Shanghai Peoples R China Shanghai Jiao Tong Univ Dept Comp Sci & Engn Shanghai Peoples R China

ISBN: (纸本)9781467398343

distributed shared memory typically use conventional Ethernet as communication medium using broadcast or multicast for synchronization mechanisms. This causes uncertainty of time spent in synchronization and interruption of unrelated processes in the same multicast group. In this research, we propose a dynamic SDN multicast mechanism to improve efficiency of synchronization for distributed shared memory by using an SDN-based multicast forwarding rule and a dynamic core based tree algorithm. The experiments on the prototype system demonstrate that it could provide better performance compared to the conventional Ethernet based solution in terms of response time and process scheduling in the homogeneous testing environment.

关键词： Core based tree distributed shared memory Multicast Openflow SDN

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An optimistic protocol for a linearizable distributed shared memory system

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Parallel Processing Letters 1996年第2期6卷 265-278页

作者： Mizuno, Masaaki Department of Comp. and Info. Sciences Kansas State University Manhattan KS 66506 United States

Recently, distributed shared memory systems have received much attention because such an abstraction simplifies programming. In this paper, we present a simple protocol which implements the linearizalility consistency criterion in a distributed shared memory system. Unlike previously implemented protocols, our protocol is based on an optimistic approach. The protocol eliminates the necessity of potentially expensive synchronization among processors for each write operation, but may require processes to rollback. © World Scientific Publishing Company.

关键词： Data consistency distributed shared memory Linearizability Optimistic

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Attribute-Based Encryption and Its Application to a Software-distributed shared memory 17

Attribute-Based Encryption and Its Application to a Software...

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17th International Joint Conference on E-Business and Telecommunications (SECRYPT)

作者： Stan, Oana Cudennec, Loic Syoen, Louis CEA LIST PC 172 F-91191 Gif Sur Yvette France DGA MI Dept Artificial Intelligence BP 7 F-35998 Rennes Armees France

ISBN: (纸本)9789897584466

Due to the widespread of cloud computing, there is an increasing interest in distributed systems as well as in data privacy and security. However, unlike the multi-core processors and NUMA architectures, the distributed shared memory (DSM) systems do not benefit from the numerous works on security and privacy. We argue here that their potential deployment onto distributed heterogeneous systems requires new approaches to securely manage access to shared data. In this paper we propose to rely on the Attribute-Based Encryption (ABE) techniques to tackle the problem of data security within the Software DSM. Moreover, this approach allowing to directly store encrypted data within the DSM and to manage the access control to these data is made transparent for the user. The implementation over an in-house S-DSM using libbswabe, an ABE library, shows that, as expected, the overhead is significant, but that it can also be adapted to the application requirements as a trade-off between security and performance.

关键词： distributed shared memory Attribute-Based Encryption

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Parallel logic programming on distributed shared memory system

Parallel logic programming on distributed shared memory syst...

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IEEE International Conference on Intelligent Processing Systems

作者： Huang, ZY Sun, CZ Sattar, A Lei, WZ Griffith Univ Sch Comp & Informat Technol Knowledge Representat & Reasoning Unit Nathan Qld Australia

ISBN: (纸本)0780342534

This paper presents an implementation of a parallel logic programming system on a distributed shared memory(DSM) system. Firstly, we give a brief introduction of Andorra-I parallel logic programming system implemented on multiprocessors. Secondly, we outline the concurrent programming environment provided by a distributed shared memory system-TreadMarks. Thirdly, we discuss the implementation issues of Andorra-l system based on TreadMarks, such as, shared memory consistency, synchronization, mutual exclusion, shared memory allocation. Finally, me discuss implementation results and further research issues for building a practically useful logic-based reasoning system on distributed shared memory systems.

关键词： distributed shared memory parallel logic programming system lazy release consistency AND-parallelism OR-parallelism

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The research of distributed shared memory technology in power system 2

The research of distributed shared memory technology in powe...

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2017 IEEE 2nd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC 2017)

作者： Pan Xu Weijin Zhuang Xinghua Li Jin Liu Mingyang Sun Longda Huang Hong Zhang Jiajia Pan Xu Zhang China Electric Power Research Institute State Grid Ningxia Electric Power Research Institute

ISBN: (纸本)9781509064151;9781509064144

Data processing in power system is becoming to a performance limitation with the rapid development of power grid. This paper proposes a method to improve the data processing efficiency in power system by distributed memory sharing technology. By this method, the data is partitioned into fragments according to the value which is generated through a specific hash algorithm with the input of the key of the record, and the record will be stored into different machine's memory according to the hash value, by experiments compared to the original solution, distributed shared memory technology has obvious advantages on the performance of data processing.

关键词： power systems distributed shared memory data-processing memory computing

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A Real-Time Operating System Supporting distributed shared memory for Embedded Control Systems 8th

A Real-Time Operating System Supporting Distributed Shared M...

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iCatse International Conference on Information Science and Applications (ICISA)

作者： Tamura, Yuji Doan Truong Thi Chiba, Takahiro Yoo, Myungryun Yokoyama, Takanori Tokyo City Univ Setagaya Ku 1-28-1 Tamazutsumi Tokyo 1588557 Japan Fujitsu Publ Solut Ltd Tokyo Japan Syst Engn Consultants Co LTD Tokyo Japan

ISBN: (纸本)9789811041549;9789811041532

The paper presents a real-time operating system (RTOS) that supports distributed shared memory (DSM) for distributed embedded control systems. The RTOS provides a location-transparent environment, in which distributed software modules can exchange input and output values through the DSM. The RTOS is an extension to OSEK OS and it utilizes a real-time network called FlexRay. The consistency of the DSM is maintained according to the order of data transfer through FlexRay, not using inter-node synchronization. The worst case response time of the DSM is predictable if the FlexRay communication is well configured.

关键词： Operating systems Real-time systems Embedded systems distributed shared memory distributed control systems

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Enabling Mobile Device Coordination over distributed shared memory 22

Enabling Mobile Device Coordination over Distributed Shared ...

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22nd IEEE International Conference on Parallel and distributed Systems (ICPADS)

作者： Huang, Maosen Wei, Hengfeng Huang, Yu Nanjing Univ State Key Lab Novel Software Technol Nanjing 210023 Jiangsu Peoples R China

ISBN: (纸本)9781509044573

distributed shared memory-based coordination has the advantage of simplifying the coordination logic to read/write operations over the illusionary local memory. However, it is notoriously challenging to come up with a cost-effective implementation of the distributed shared memory. The implementation becomes more challenging in mobile environments, due to the resource constraints and the more rapid changes in the computing context. To this end, we propose the Mobile distributed shared memory (MDSM) middleware to facilitate the development of mobile coordination applications. The key constructs in the shared memory are shared registers. shared registers with different read/write patterns are implemented to facilitate flexible coordination. The registers also have different consistency semantics, to enable efficient tradeoff between data consistency and data access cost. An application framework is proposed to simplify the implementation of mobile coordination, relying on the middleware support from MDSM. A case study is conducted to demonstrate the usage of MDSM, where a soccer game application for the mobile phone is developed. Experimental evaluation is conducted to quantify different options of the consistency-latency tradeoff in the case study. The performance measurements show the cost-effectiveness of eventual consistency in this game. We also verify the read/write traces to further explain why eventual consistency practically performs better than it can guarantee.

关键词： distributed shared memory consistency-latency tradeoff mobile coordination middleware atomicity eventual consistency

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