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A very important issue in executing a scientific workflow in optical grid is how to map the workflow tasks onto multiple distributed resources. In this paper, we propose a new cost-based workflow scheduling algorithm (MCBS) which tries to minimize the cost of the workflow execution while meeting the deadline defined by users. The simulation results prove the efficiency of the MCBS algorithm.
We propose a novel Load Weighted Scheduling Algorithm (LWSA) to improve the packet aggregation performance for randomly-varied traffic patterns. Simulation results show that the LWSA provides higher utilization than the basic round-robin scheduling algorithm and retains the traffic pattern from IP network to OPS network quite well.
Grid is evolving to a more efficient global computing infrastructure by introducing optical network technology to support the advanced data-intensive distributed applications. Scheduling such data-intensive applications includes assigning tasks on computational resources, routing lightpaths, and assigning wavelength channels for data communication. The scheduling problem is NP-hard in the traditional...
This paper experimentally studies the accurate task scheduling in optical grid. The practical data transfer scenario and task execution scenario in optical grid have been investigated and modeled. Scheduling algorithm OGEFT adopting the new realistic models shows significantly improved scheduling accuracy.
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