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Hadoop, as one of the most widely accepted MapReduce frameworks, is naturally data-intensive. Its several dependent projects, such as Mahout and Hive, inherent this characteristic. Meanwhile I/O optimization becomes a daunting work, since applications' source code is not always available. I/O traces for Hadoop and its dependents are increasingly important, because it can faithfully reveal intrinsic...
The thermal and hydrodynamic performance of liquid active cooling devices was investigated for possible applications in the thermal management of high-power LED arrays fabricated on InGaN/sapphire chips. A microjet solution and a series of minichannel cold plates were investigated using full 3-D numerical simulations. An optimization based on entropy generation minimization was performed with goal...
An improved artificial bee colony algorithm (IABC) is proposed in this paper, which is aimed at some defects of ABC such as low optimization precision and easy to fall into local optimal value. A new method is introduced to produce a new solution when the bees are going on neighborhood search in the improved algorithm. IABC is as simple as ABC to implement, but can greatly improve the ability of seeking...
Cell broadband engine (CBE) is a multi-core processor jointly developed by Sony, Toshiba and IBM. The multi-SPE architecture makes it powerful for streaming media processing, such as voice over IP application. In this paper, a CBE based IP media server (IMS) architecture is proposed and the workloads of ITU-T G.723.1 and GSM-AMR encoder on CBE are analyzed with some preliminary optimization result...
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