Peer-to-Peer Tuple Space: A Novel Protocol for Coordinated Resource Provisioning

Resource brokering services are the main components that control the way applications are scheduled, managed and allocated in a decentralised, heterogeneous and dynamic Grid computing environment. Existing Grid computing systems such as a resource broker, e-Science application work-flow scheduler operate in tandem but still lack a coordination process that can lead to efficient application schedule across distributed resources. Lack of coordination exacerbates the utilisation of various resources including computing cycles and network bandwidth. To overcome these shortcomings, we propose a mechanism to realise a decentralised coordination process among grid application schedulers. Our dencentralised coordination process is based on a Peer-toPeer (P2P) resource discovery system. Resource discovery system utilises the publish/subscribe model to convey coordination message among the participants. In the proposed scheme, all application schedulers and resource providers facilitate the decentralised coordination process through exchange of resource usage and application requirement information.