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Big-data systems are increasingly important for solving the data-driven problems in many science domains including geosciences. However, existing big-data systems cannot support the self-describing data formats such as NetCDF which are commonly used by scientific communities for data distribution and sharing. This limitation presents a serious hurdle to the further adoption of big-data systems by...
Line loss management is an effective measure for electric power company to reduce running cost. An electric power company has collected a large amount of marketing data in recent years with the construction of information acquisition system. From the data management and analysis point of view in this paper, combining Oracle database and Matlab to create partition of marketing data and then defining...
Due to the popularity and importance of Parallel File Systems (PFSs) in modern High Performance Computing (HPC) centers, PFS designs and I/O optimizations are active research topics. However, the research process is often time-consuming and faces cost and complexity challenges in deploying experiments in real HPC systems. This paper describes PFSsim, a trace-driven simulator of distributed storage...
The hosting of databases on virtual machines (VMs) has great potential to improve the efficiency of resource utilization and the ease of deployment of database systems. This paper considers the problem of on-demand allocation of resources to a VM running a database serving dynamic and complex query workloads while meeting QoS (Quality of Service) requirements. An autonomic resource-management approach...
The decision of receiver buffer length is very important for real time streaming media. Different buffer length get different quality of playback even under the same network circumstances such as algorithm of transmission and playback. Due to the importance of receiver buffer for the streaming media, in this paper we study the principle of buffer and design on a buffer simulation platform of real-time...
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