We consider a surface designed to convey fragile and tiny micro-objects. It is composed of an array of decentralized blocks that contain MEMS valves. We are interested in the dynamics of the optimal path between two b...
ISBN:
(纸本)9783319396392;9783319396385
We consider a surface designed to convey fragile and tiny micro-objects. It is composed of an array of decentralized blocks that contain MEMS valves. We are interested in the dynamics of the optimal path between two blocks in the surface. the criteria used for optimal paths are related to the degradation of the MEMS, namely its remaining useful life and its transfer time. We study and analyze the evolution of the optimal path in dynamic conditions in order to maintain as long as possible a good performance of the conveying surface. Simulations show that during usage the number of optimal paths increases, and that position of sources greatly influences surface lifetime.
Recent advances in mobile device technology have triggered research on using their aggregate computational and/or storage resources to form edge-clouds. Whilst traditionally viewed as simple clients, smart-phones and ...
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ISBN:
(数字)9783319395777
ISBN:
(纸本)9783319395777;9783319395760
Recent advances in mobile device technology have triggered research on using their aggregate computational and/or storage resources to form edge-clouds. Whilst traditionally viewed as simple clients, smart-phones and tablets today have hardware resources that allow more sophisticated software to be installed, and can be used as thick clients or even thin servers. Simultaneously, new standards and protocols, such as Wi-Fi Direct and Wi-Fi TDLS (Tunneled Direct Link Setup), have been established that allow mobile devices to talk directly with each other, as opposed to over the Internet or across Wi-Fi access points. this can, potentially, lead to ubiquitous, low-latency, device-to-device (D2D) communication. In this paper, we study whether D2D protocols can support mobile-edge clouds by benchmarking different protocols and configurations for a specific application. the results show that decentralized device-to-device techniques can be used to efficiently disseminate multimedia contents while diminishing contention in the wireless infrastructure, allowing for up to 65% traffic reduction at the access points.
Self-organizing construction principles are a natural fit for large-scale distributed system in unpredictable deployment environments. these principles allow a system to systematically converge to a global state by me...
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ISBN:
(数字)9783319395777
ISBN:
(纸本)9783319395777;9783319395760
Self-organizing construction principles are a natural fit for large-scale distributed system in unpredictable deployment environments. these principles allow a system to systematically converge to a global state by means of simple, uncoordinated actions by individual peers. Indexing services based on the distributed hash table (DHT) abstraction have been established as a solid foundation for large-scale distributed applications. For most DHTs, the creation and maintenance of the overlay structure relies on the exploration and update of an already stabilized structure. We evaluate in this paper the practical interest of self-organizing principles, and in particular gossip-based overlay construction protocols, to bootstrap and maintain various DHT implementations. Based on the seminal work on T-Chord, a self-organizing version of Chord using the T-Man overlay construction service, we contribute three additional self-organizing DHTs: T-Pastry, T-Kademlia and T-Kelips. We conduct an experimental evaluation of the cost and performance of each of these designs using a prototype implementation. Our conclusion is that, while providing equivalent performance in a stabilized system, self-organizing DHTs are able to sustain and recover from higher level of churn than their explicitly-created counterparts, and should therefore be considered as a method of choice for deploying robust indexing layers in adverse environments.
the proceedings contain 39 papers. the topics discussed include: DVS: dynamic variable-width striping RAID for shingled write disks;cooperative bandwidth sharing for 5G heterogeneous network using game theory;active b...
ISBN:
(纸本)9781509033157
the proceedings contain 39 papers. the topics discussed include: DVS: dynamic variable-width striping RAID for shingled write disks;cooperative bandwidth sharing for 5G heterogeneous network using game theory;active burst-buffer: in-transit processing integrated into hierarchical storage;DS-Index: a distributed search solution for federated cloud;assessing advanced technology in CENATE;efficient parity update for scaling raid-like storage systems;a stripe-oriented write performance optimization for RAID-structured storage systems;CircularCache: scalable and adaptive cache management for massive storage systems;a kind of FTL scheme which keeps the high performance and lowers the capacity of ram occupied by mapping table;distributed slot scheduling algorithm for hybrid CSMA/TDMA MAC in wireless sensor networks;correlating hardware performance events to CPU and dram power consumption;dynamic power-performance adjustment on clustered multi-threading processors;a high-performance persistent identification concept;hybrid replication: optimizing network bandwidth and primary storage performance for remote replication;GPU-ABFT: optimizing algorithm-based fault tolerance for heterogeneous systems with GPUs;and improving read performance of SSDs via balanced redirected read.
this paper presents a formal framework for programming distributed applications capable of handling partial failures, motivated by the non-trivial interplay between failure handling and messaging in asynchronous distr...
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ISBN:
(数字)9783319395708
ISBN:
(纸本)9783319395708;9783319395692
this paper presents a formal framework for programming distributed applications capable of handling partial failures, motivated by the non-trivial interplay between failure handling and messaging in asynchronous distributed environments. Multiple failures can affect protocols at the level of individual interactions (alignment). At the same time, only participants affected by a failure or involved in its handling should be informed of it, and its handling should not be mixed withthat of other failures (precision). this is particularly challenging, as through the structure of protocols, failures may be linked to others in subsequent or concomitant interactions (causality). Last but not least, no central authority should be required for handling failures (decentralisation). Our goal is to give developers a description language, called protocol types, to specify robust failure handling that accounts for alignment, precision, causality, and decentralisation. A type discipline is built to statically ensure that asynchronous failure handling among multiple endpoints is free from orphan messages, deadlocks, starvation, and interactions are never stuck.
As a critical technique to support the multimedia services, the statistical quality-of-service (QoS) technique has been proved to be effective in statistically guaranteeing delay-bounded video transmissions over the t...
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the proceedings contain 56 papers. the special focus in this conference is on Models, Algorithms, Energy Aspects of Computation, Scheduling for Parallel computing and Language-Based Parallel Programming Models. the to...
ISBN:
(纸本)9783319321516
the proceedings contain 56 papers. the special focus in this conference is on Models, Algorithms, Energy Aspects of Computation, Scheduling for Parallel computing and Language-Based Parallel Programming Models. the topics include: Virtualizing CUDA enabled GPGPUS on arm clusters;a distributed hash table for shared memory;mathematical approach to the performance evaluation of matrix multiply algorithm;a scalable numerical algorithm for solving tikhonov regularization problems;energy performance modeling with TIA and EML;considerations of computational efficiency in volunteer and cluster computing;parallel programs scheduling with architecturally supported regions;adaptive multi-level workflow scheduling with uncertain task estimates;divisible loads scheduling in hierarchical memory systems with time and energy constraints;extending Gustafson-barsis’s law for dual-architecture computing;free scheduling of tiles based on the transitive closure of dependence graphs;multi-threaded construction of neighbour lists for particle systems in openMP;high productivity and high performance;parallel ant brood graph partitioning in Julia;scalability model based on the concept of granularity;performance and power-aware modeling of MPI applications for cluster computing;running time prediction for web search queries;performance analysis of a parallel, multi-node pipeline for DNA sequencing;parallelising the computation of minimal absent words;modeling and simulations of edge-emitting broad-area semiconductor lasers and amplifiers;application of the parallel inmost platform to subsurface flow and transport modelling;genetic algorithm and exact diagonalization approach for molecular nanomagnets modelling and parallel Monte Carlo simulations for spin models withdistributed lattice.
System anomalies such as network interruptions, operating system halt, disk crash could result in significant financial losses to organizations. In this demonstration we describe a novel log event analysis framework c...
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ISBN:
(纸本)9781450350655
System anomalies such as network interruptions, operating system halt, disk crash could result in significant financial losses to organizations. In this demonstration we describe a novel log event analysis framework called Solution Recommender which provides a ranked list of solutions to overcome such system errors. the solution recommender gathers log events via a publisher/subscriber mechanism and indexes them inside the WSO2 Data Analytics Server (DAS). Collected information is analyzed using a knowledge graph which conducts log event pattern matching to identify solutions for system failures. We have implemented the proposed approach on WSO2 Log Analyzer for WSO2 API Manager and tested its functionality. In this paper we describe our experience of implementing the log event recommender interlace, the first such recommender developed in a log event analyzer system. the insights presented here will assist practitioners with implementing such Log Event analysis solutions for real world scenarios.
For multiobjective optimization problems with large-scale decision variables, it is difficult to optimize all the decision variables at the same time. Withthe divide and conquer strategy, the decision variable analys...
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It is now several years since scientists in Poland can use the resources of the distributedcomputing infrastructure - PLGrid. It is a flexible, large-scale e-infrastructure, which offers a homogeneous, easy to use ac...
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ISBN:
(纸本)9783319321493;9783319321486
It is now several years since scientists in Poland can use the resources of the distributedcomputing infrastructure - PLGrid. It is a flexible, large-scale e-infrastructure, which offers a homogeneous, easy to use access to organizationally distributed, heterogeneous hardware and software resources. It is built in accordance with good organizational and engineering practices, taking advantage of international experience in this field. Since the scientists need assistance and close collaboration with service providers, the e-infrastructure is relied on users' requirements and needs coming from different scientific disciplines, being equipped with specific environments, solutions and services, suitable for various disciplines. All these tools help to lowering the barriers that hinder researchers to use the infrastructure.
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