Abstract
The creation of virtual machines (VMs) is one of the procedures of resource scheduling which is the key technology in cloud computing systems. Currently it is rarely studied independently, and it is always set as a static model where the number and the type of VMs are predefined before scheduling. However, with the static model, it is difficult to consider the overall optimization for the scheduling and it is not user-friendly because of users' imprecise requirements. Therefore, in this paper a dynamic model for VMs' creation is proposed. With this model, users only submit fuzzy requirements for computing resources, while the necessary number and type of VMs are calculated according to the current environment and dynamically created for further scheduling. The model is implemented in CloudSim, where the key technologies are presented. Analysis and experiments were carried out to verify the extension of the model in a more wide research area, such as resource scheduling for multi-objective optimization and scheduling tasks with priorities.
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