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The following topics are dealt with : grid computing; cloud computing; quality of service; performance evaluation; security issues; parallel computing; distributed computing; peer-to-peer computing; service computing; network communication; sensor network; Internet of things; and high performance geocomputation.
The pre-computation of data cubes is critical to improve the response time of On-Line Analytical Processing (OLAP) system. However, as the size of data grows, the time it takes to construct data cubes becomes a significant performance bottleneck. Therefore, we need the parallel pre-computation approach to further improve the performance of OLAP. Current parallel approaches can be grouped into two...
We present a novel optimization approach for the orchestration of the execution of database workflows in heterogeneous infrastructures, hereby specifically focusing on sorting algorithms. We give a case for the validity of our approach by developing a generic template for a family of optimization algorithms. We develop a model for the mathematical analysis of parallel sort algorithms and design a...
The intrinsic characteristic heterogeneous of cloud applications makes their consistency requirements different. Furthermore, the consistency requirement of certain application changes continuously at runtime, so a fixed consistency strategy is not enough. An application-based adaptive mechanism of replica consistency is proposed in this paper. We divide the consistency of applications into four categories...
Replica management has become a hot research topic in data grid, It improves the availability and fault tolerant of data in grid computing environment. Based on the deep research on the mainstream replica management technology in traditional data grid, we propose a dynamic replica management strategy. Our replica management strategy consists of the creation method of dynamic replica that can automatically...
Because of the bottleneck of disk I/O, the distributed file system based on disk is limited in the performance on data throughput and latency. It is a big challenge for such a system to meet the high performance requirement of the massive small-file storage. Cache has been widely used in storage system to improve the data access performance. In order to support the storage of massive small files,...
The instability of the network and storage nodes may lead to the failure of the storage process in the network storage environment. In this paper, we establish the reliability model of the storage node availability, and the probability model of a success file block storage process, give the Store-After-Partition Strategy, compare the probabilities of a success file storage process at different partition...
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