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Modern cloud computing systems have been using multiple processing units on servers to increase their processing capability. Recently, applications with multiple parallelization options have been witnessed, and serve as a promising model for efficiently utilizing the processing capacity of the system. In this paper, we consider utility-based scheduling for periodic multisegment tasks with multiple...
In a cloud computing environment, data replication is frequently used for failure recovery. However, data replication can be used also to improve the performance of the execution of application. In this context, this article presents a policy for data replication for a computational cloud with bioinformatics data, such that the execution of application of bioinformatics is reduced.
Graphic image is compulsory in delivering information and communication in this information technology era. Graphic applications are used widely to manipulate images in advertising industries and in animation movie productions. In order to manipulate numerous and complex images, it is required long period of time and high-performance computers. However, computers with high-performance specification...
NAND flash-based Solid State Drives (SSDs) have been widely deployed in data centers of cloud computing due to their high performance compared with hard disks, while the limited lifespan of flash memory makes SSDs not very suitable for write-intensive applications. Deduplication is an effective method used to reduce the write traffic of applications thus can be used to extend the lifespan of SSDs...
It was found that the sequence of lightpath demand list plays an important role for the performance of routing and wavelength assignment (RWA) algorithm [1]. We develop a ten-desktop Hadoop cloud computing system with each desktop independently running the RWA algorithm for a certain number of demand sequences such that a sufficient number of demand sequences can be evaluated within a short time....
With the continuous advance of the smart grid, power enterprises accumulated massive data. In order to avoid the appearance of the data grave, data mining algorithms are used to do mining for massive data. However, if traditional mining algorithms are used to handle massive data, their processing performance encounters a bottleneck. The k-means algorithm based on cloud computing is implemented in...
Confidence in a pairwise local sequence alignment is a fundamental problem in bioinformatics. For huge DNA sequences, this problem is highly compute-intensive because it involves evaluating thousands of local alignments to construct an empirical score distribution. Recent parallel solutions support only small sequence sizes and/or are based on sophisticated infrastructures that are not available for...
Multi-cluster is the common underlying architecture of most grid and cloud environments, which usually consist of multiple clusters located at different places. One important characteristic of such computing environments is the performance difference between intra-cluster and inter-cluster communications. Intra-cluster communication networks usually have shorter latency and larger bandwidth than inter-cluster...
In this paper, we use the Hadoop system to build the cloud computing environment. By using data hiding technology to embed data into cover images, we show that the approach using cloud computing would take less execution time than that using a single computer when processing a huge amount of data. Thus, cloud computing provides a convenient platform and also reduces the cost of the equipment required...
The impact of Parallel Computing Infrastructures (PCI) on energy consumption and CO2 emissions worldwide can no longer be ignored. So far, most actions taken have focused on energy efficiency of PCI's underlying hardware, direct reduction of CO2 emissions, or user policies targeted to optimize hardware usage and consequently ensure that most CO2 emissions are justified, thereby minimizing the impact...
Cloud Computing becomes important computing technology, such as Google, Micro Soft, IBM and Amazon. Cloud Computing is a kind of parallel computing spreading into Internet. The "Cloud" mainly represents the Web based on the TCP/IP protocol or protocols compatible with that. Cloud Computing expands the range of parallel computing into all of the computing devices connecting into the "Cloud"...
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