Symbolic execution is an effective path oriented and constraint based program analysis technique. Recently, there is a significant development in the research and application of symbolic execution. However, symbolic e...
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The advancements in mobile hardware and network technologies facilitate the processing power, storage capability, and connection quality. Such developments enable sophistic functions, ubiquitous power- and bandwidth-h...
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ISBN:
(纸本)9781728129235
The advancements in mobile hardware and network technologies facilitate the processing power, storage capability, and connection quality. Such developments enable sophistic functions, ubiquitous power- and bandwidth-hungry applications that fundamentally changes the individual's lifestyle. Although Cloud Computing technologies have already been leveraged to coordinate with the capability and battery-constraint mobile User Equipment (UE), the long-distance propagation delay downgrades the network QoS and user QoE. In this paper, we propose a queueing-based Mobile Edge Computing (MEC) model that concerns the offloading procedure, especially in the time-constraint scenarios. A queueing model is proposed for the offloading process, considering the dynamic network queueing delay. A heuristic scheduling model is designed to maximize the offloading energy and execution efficiency. A regression prediction model is implemented to achieve dynamic resource allocation. In the experiment, the proposed model is compared to the recent studies, and the results indicate that the proposed model can outperform the current studies in terms of execution time and energy reservation.
The proceedings contain 32 papers from the Proceedings of the 23rdieeeinternationalsymposium on Reliable distributed Systems, SrdS 2004. The topics discussed include: performance comparison of a rotating coordinato...
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The proceedings contain 32 papers from the Proceedings of the 23rdieeeinternationalsymposium on Reliable distributed Systems, SrdS 2004. The topics discussed include: performance comparison of a rotating coordinator and a leader based consensus algorithm;self checking network protocols: a monitor based approach;token-based atomic broadcast using unreliable failure detectors;a stability-oriented approach to improving BGP convergence;slow advances in fault-tolerant real-time distributed computing;skewed checkpointing for tolerating multi-node failures;the design and evaluation of a defense system for Internet worms;and model-based validation of an intrusion-tolerant information system.
Tools are becoming increasingly important to efficiently utilize the computing power available in contemporary large scale systems. The drastic increase in the size and the complexity of systems require tools to be sc...
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ISBN:
(纸本)9781424437504
Tools are becoming increasingly important to efficiently utilize the computing power available in contemporary large scale systems. The drastic increase in the size and the complexity of systems require tools to be scalable while producing meaning full and easily digestible information that may help the user pin-point problems at scale. The goal of this tutorial is to introduce some state-of-the-art performance tools from three different organizations to a diverse audience group. Together these tools provide a broad spectrum of capabilities necessary to analyze the performance of scientific and engineering applications on a variety of large and small scale systems.
Physiological monitoring has been used in a wide range of scenarios to assist in disease diagnosis, athlete monitoring and other activities. There are also many opportunities in analysing aggregate data from groups of...
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ISBN:
(纸本)9781467325691
Physiological monitoring has been used in a wide range of scenarios to assist in disease diagnosis, athlete monitoring and other activities. There are also many opportunities in analysing aggregate data from groups of people rather than individuals such as public event monitoring or athletic team performance optimisation. Numerous difficulties exist pertaining to this, particularly concerning how to process and transform the resulting physiological data in real-time when many devices are producing data. This paper proposes a system that is designed to monitor, analyse and report physiological data in real-time by leveraging mobile devices as distributed processors.
Overlapping Reconfiguration is currently the most effi-cient method to reconfigure an interconnection network, but is only valid for systems that apply distributed routing. This paper proposes a solution which enables...
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With the rapidly increasing diversity of parallel architectures and the increasing time and labor for developing parallel applications, the performance portability of parallel programs is becoming increasingly importa...
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ISBN:
(纸本)0769523129
With the rapidly increasing diversity of parallel architectures and the increasing time and labor for developing parallel applications, the performance portability of parallel programs is becoming increasingly important and should be considered when designing parallel execution models, APIs, and runtime system software. This paper analyzes both code portability and performance portability of parallel programs based on the EARTH model - an event-driven fine-grain multi-threaded execution and architecture model. We discuss several design considerations of the EARTH system that contribute to the performance portability of parallel applications. Experiments of four representative benchmarks are conducted on several different parallel architectures, including two clusters listed in the 23rd supercomputer TOP500 list. The results demonstrate that EARTH based programs can achieve robust performance portability across the selected hardware platforms without any code modification or tuning.
The proceedings contain 47 papers. The topics discussed include: TuST: from raw data to vehicular traffic simulation in turin;modeling and simulation of ElasticSearch using CloudSim;Reproducible parallel simulation ex...
ISBN:
(纸本)9781728129235
The proceedings contain 47 papers. The topics discussed include: TuST: from raw data to vehicular traffic simulation in turin;modeling and simulation of ElasticSearch using CloudSim;Reproducible parallel simulation experiments via pure functional programming;implementation of a VoIP simulation network by using stochastic process methods;a simulator for creating drones networks and providing users connectivity;floating car data adaptive traffic signals;and approximate distributed discrete event simulation using semi-conservative look-ahead estimation.
Developing a high performance parallel application is difficult. An application must often be analyzed and optimized by the programmer before reaching an acceptable level of performance. Performance tools that collect...
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In HPC supercomputers, the CPU, memory, network and storage play a critical role in application performance. Established benchmarks measure the theoretical peak performance of these components, but storage benchmarks ...
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ISBN:
(纸本)9798350369205;9798350369199
In HPC supercomputers, the CPU, memory, network and storage play a critical role in application performance. Established benchmarks measure the theoretical peak performance of these components, but storage benchmarks often focus solely on I/O and lack realism. To address this, we present numio, a benchmark that simulates and evaluates overlapping compute, communication and I/O phases. Furthermore, we present a novel ensemble-driven system benchmarking strategy. This approach involves running multiple benchmarks in parallel to analyse their interactions and assess the system's ability to handle the workload. Using a real-world example, we demonstrate how this approach reveals performance issues in complex HPC systems that remain hidden when using traditional methods using isolated benchmarks on empty systems.
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