Subject of the ROADEF/EURO challenge 2012: Machine Reassignment
The aim of this challenge is to improve the usage of a set of machines. A machine has several resources as for example RAM and CPU, and runs processes which consume these resources. Initially each process is assigned to a machine. In order to improve machine usage, processes can be moved from one machine to another. Possible moves are limited by hard constraints, as for example resource capacity constraints, and have a cost. A solution to this problem is a new process-machine assignment which satises all hard constraints and minimizes a given objective cost.
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