标题：An effective iterated greedy algorithm for reliability-oriented task allocation in distributed computing systems
作者：Kang, Q.;He, H.;Wei, J.
作者机构：School of Information Engineering, Shandong University, 180 Wenhua Road, Weihai 264209, China;School of Information Engineering
通讯作者地址：[Kang, QM]Shandong Univ, Sch Informat Engn, 180 Wenhua Rd, Weihai 264209, Peoples R China.
来源：Journal of Parallel and Distributed Computing
关键词：Distributed computing;Iterated greedy algorithm;Meta-heuristics;System reliability;Task allocation
摘要：This paper investigates the problem of allocating parallel application tasks to processors in heterogeneous distributed computing systems with the goal of maximizing the system reliability. The problem of finding an optimal task allocation for more than three processors is known to be NP-hard in the strong sense. To deal with this challenging problem, we propose a simple and effective iterative greedy algorithm to find the best possible solution within a reasonable amount of computation time. The algorithm first uses a constructive heuristic to obtain an initial assignment and iteratively improves it in a greedy way. We study the performance of the proposed algorithm over a wide range of parameters including problem size, the ratio of average communication time to average computation time, and task interaction density. The viability and effectiveness of our algorithm is demonstrated by comparing it with recently proposed task allocation algorithms for maximizing system reliability available in the literature.