Towards Topology-and-Trust-Aware P2P Grid

Grid and P2P are both popular distributed network models nowadays. The grid is a platform to compactly coordinate the distributed resources, while the P2P model assigns an equal position to each peer and allows all the peers to move freely. Because of their different architectures, these two models have their own advantages and limitations, and therefore are used in different applications. In this paper, we propose a novel distributed network model called P2P Grid which hierarchically combines the grid and P2P. The P2P Grid is constructed based on the Globus Toolkit middleware and SW-R2P network topology, in order to absorb their respective advantages, especially in the trust based access control. We also describe the resource location algorithm and peer operation protocols for this SW-R2P based P2P Grid. Finally the simulated experiments show that our P2P Grid model has a great performance not only in efficiency and security, but also in scalability and robustness.