Part 5: Scheduling in Manufacturing and Other ApplicationsInternational audienceIn this paper we are considering the problem of tasks scheduling executed simultaneously on multiple identical machines with a cost-criterion, which is the product of the tasks execution time and the number of used machines. Moreover, it is assumed that between the tasks performed sequentially there must be setup of the machines performed. Solution to the problem comes down to a generalization of a two-dimensional packing problem. The paper presents simulated annealing algorithm with different variants of packing strategy. The conducted computational experiments proved that designated solution differs little from some lower bounds for the constraints of the objective function

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Part 5: Scheduling in Manufacturing and Other ApplicationsInternational audienceThis article presents a proposal of solution for the problem of optimization of the virtual machine (VM) backup or replication process in architecture with multiple locations where efficient bandwidth usage and maximal tardiness for single VM are objectives. The two step algorithm is considered, where in the first step a set of tasks is partitioned into smaller subsets for load balancing. In the second step - tabu search algorithm is used to minimize weighted sum of tardiness. The paper contains the results of computational experiments on the scalability of the presented method

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