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When provided with more powerful or extra hardware, state-of-the-art Byzantine fault-tolerant (BFT) agreement protocols are unable to effectively exploit the additional computing resources: On the one hand, in settings with heterogeneous servers existing protocols cannot fully utilize servers with higher performance capabilities. On the other hand, using more servers than the minimum number of replicas...
Cloud computing providers such as Amazon and Google have recently begun offering container-instances, which provide an efficient route to application deployment within a lightweight, isolated and well-defined execution environment. Cloud providers currently offer Container Service Platforms (CSPs), which orchestrate containerised applications. Existing CSP frameworks do not offer any form of intelligent...
Cloud computing can improve the computing ability of mobile terminals. However, offloading is not always energy-saving compared to local computation. In order to further improve the battery lifetime, trade-off between energy efficiency and spectral efficiency in transmitting is considered, we propose a transmission strategy to decide whether to offloading or not. This strategy focuses on the energy...
Workflow applications in science and engineering have steadily increased in variety and scale. Coinciding with this increase has been the relentless effort to improve the performance of these applications through exploiting the abundance of resources in hyper-scale clouds and with little attention to resources efficiency. The inefficient use of resources when executing scientific workflows results...
Resource abundance is apparent in today's multi-core era. Workflow applications common in science and engineering can take great advantage of such ample resource capacity. Yet, existing workflow scheduling algorithms have been mostly designed on the traditional and contrasting premise of scarce resource capacity relative to what applications require. In this paper, we address the problem of workflow...
In order to relieve the conflict between improving service quality and enhancing resource efficiency in Web proxy cache cluster, a new elastic Web proxy cache cluster-EWPCC is presented. Basing on the “on demand” characteristic of cloud computing, EWPCC could acquire resource from cloud when the Web cache system is overloaded and release unnecessary cloud resource after load down. In this way, using...
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