Authors: G. Kavitha; V. Sankaranarayanan
Addresses: Department of Information Technology, B.S. Abdur Rahman University, Vandalur, Chennai 600 048, Tamilnadu, India ' Department of Information Technology, B.S. Abdur Rahman University, Vandalur, Chennai 600 048, Tamilnadu, India
Abstract: The computational grid is organised as a collection of heterogeneous resources to solve complex computational problems in scientific domains. The fundamental issue to be addressed here is the selection of appropriate compute and network resources for every submitted job. We present a novel resource selection framework, which selects trusted resources across multiple resource sites based on the computation and network capacity of the resource. We developed a new scheme for efficient data transfer in high latency wide area networks. To efficiently utilise the bandwidth of the connected resources, an improvement over the existing TCP is proposed. TCP striping aims at minimising the communication time and maximising the network utilisation. We have solved the problem of finding the optimal number of stripes considering the available bandwidth and data file size. Simulation results have shown that the proposed work completes the submitted jobs with a minimum communication time and execution time. Also, there is a significant improvement of bandwidth utilisation in high bandwidth high latency networks.
Keywords: network bandwidth; TCP striping; trust; latency; wide area networks; WANs; stripe size; transfer time; resource selection; QoS; quality of service; grid computing; trusted resources; simulation; transmission control protocol.
International Journal of Computational Science and Engineering, 2014 Vol.9 No.1/2, pp.130 - 138
Received: 18 Jan 2012
Accepted: 30 May 2012
Published online: 16 Jan 2014 *