Read e-book online 42.Parallel and Distributed Systems PDF

By John G. Webster (Editor)

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Finally, (6) The authentication interface module provides basic authentication mechanisms for validating the identity of users and resources. The modules of the Globus tool kit define an abstract HC system. The definition of this HC system simplifies development of higher level applications by allowing HC programmers to think of geographically distributed, heterogeneous collections of resources as unified entities. It also allows developing a range of alternative infrastructures, services, and applications.

15–22. 29. M. , Augmenting the optimal selection theory for superconcurrency, 1st Workshop Heterogeneous Process. (WHP ’92), 1992, pp. 13–22. 30. D. , PAWS: A performance evaluation tool for parallel computing systems, Computer, 24 (1): 18–29, 1991. 31. J. Yang, I. Ahmad, and A. Ghafoor, Estimation of execution times on heterogeneous supercomputer architecture, Int. Conf. Parallel Process. (ICPP ’93), vol. 1, pp. 219–225, 1993. 32. B. Narahari, A. Youssef, and H. A. Choi, Matching and scheduling in a generalized optimal selection theory, 3rd Heterogeneous Comput.

The second phase of the LMT algorithm uses a min-time algorithm to assign the subtasks level by level. The min-time algorithm is a greedy method that attempts to assign each subtask to the best machine. If the number of subtasks is more than the number of machines, then the smallest subtasks are merged until the number of subtasks is equal to the number of machines. Then the subtasks are ordered in descending order by their average computational time. Each subtask is assigned to the machine with the minimum completion time.

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42.Parallel and Distributed Systems by John G. Webster (Editor)


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