Implementation of energy efficient green computing in cloud computing

Clouds are rapidly becoming an important platform for scientific applications. For executing large programs in cloud, the class of programs can be decomposed into multiple sequences of tasks that can be executed in different VMs. Users have to pay for the resources they use according to some pricing model. Cloud applications consume huge amount of energy, this also cause high operational cost. So this work introduces green computing in cloud called green cloud. Green computing is the study of efficient and eco-friendly computing resources in order to reduce energy consumption, carbon emission, etc. In recent years, companies in the IT industry have come to realise that going green is in their best interest that is reduced costs. Energy consumption at different levels in cloud computing system was discussed. This work discuses several techniques for reducing energy consumption in cloud and evaluates the CPU energy with power consumption. It also works on memory consumption techniques and presents the results for that. It compares the memory consumption with power consumption and present results for the same.