Análise de Estratégias de Computação Verde em Grades Computacionais Oportunistas

Abstract

Nowadays, opportunistic grids are getting more and more popular. The energy efficiency of those grids is also an increasing concern. This paper evaluates two green computing strategies to reduce energy consumption in op- portunistic grid resources, namely: standby and hibernate. Both techniques are used when a resource is idle, i.e., available to the grid, but there is no work to be processed. We simulate an opportunistic grid that uses both strategies and also a scenario without a green computing strategy. As expected, both techniques in- creased the response time (makespan) of the jobs executed, but improved energy savings when compared with the scenario that does not use a green computing strategy. However, the standby approach resulted in greater savings and in a smaller impact on the application makespan, being a better strategy to be used in such grids.