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Traditionally, the assignment problem between tasks and processors is worked out by scheduling methods. In this paper, we have an innovative idea to construct a problem-solving environment for computational grids. To bridge the gap between the parallel processing technology and the heterogeneous computing environment, the grid computing resources are(More)
In recent years much attention has been given to providing the proportional delay differentiation through the packet scheduling. The issue of the performance of the scheduling algorithms also increases in importance when the line speed increases significantly as a result of the optical technology. In this paper we propose an efficient packet scheduling(More)
Input buffered switches with virtual output queues (VOQ) design to avoid head-of-line problems, is a primary design of switches that can be scalable to very high speeds. However, this design requires a complex and iterative scheduling approach and does not meet quality of service (QoS) requirements during operation. In this paper, a three-dimensional(More)
The Internet Engineering Task Force (IETF) recommended the deployment of active queue management (AOM) in the Internet routers in 1998. There were more than 50 new AQM algorithms which have been proposed since 1999. They did not consider the server fairness problem caused by the proposed AQM mechanisms. However, it happens that one may intentionally, but in(More)
This paper proposes a statistical method to approximate the distributions of computational and communicational abilities of resources on computational grids. The well-known gamma and normal distributions are employed to approximate the distribution of computational ability and communicational ability for those computational resources. The result of the(More)
This work analyzes the performance of the parallel packet switch (PPS) with a sliding window (SW) method. The PPS involves numerous packet switches that operate independently and in parallel. The conventional PPS dispatch algorithm adopts a round robin (RR) method. The class of PPS is characterized by deployment of parallel low-speed switches whose all(More)