Jong-Hyuk Lee’s research while affiliated with Korea University and other places

Cloud computing is an Internet-based computing paradigm that provides services in a virtualized form composed of plenty of sharable resources. In cloud computing environments, gossip protocols are engaged as a method to rapidly disseminate the state information for innumerable resources. Although the gossip protocols provide a robust and scalable multicast, there is a drawback that requires redundant messages in satisfying 100% of reliability. In our study, we propose a Group-based Gossip Multicast Protocol to reduce the message overhead while delivering the state information efficiently and fault tolerantly. Furthermore, we verified the performance of the proposed protocol through experiments.

Mobile Grid is a branch of Grid where the infrastructure includes mobile devices. The mobile Grid exhibits different challenges such as resource-constraints and users’ movements, compared to the traditional Grid. Mobile agent is an attractive technology to overcome these challenges. In this paper, we present a new mobile Grid system based on the mobile agent. This paper describes the architecture of the new system: multi-proxy based mobile grid environment with location management and message delivery mechanism. Our system is lightweight enough to be installed on mobile devices. It also provides the physical and logical mobility of mobile agents. We implemented the mobile Grid system based on Globus Toolkit and ODDUGI mobile agent system. Keywordsmobile Grid-mobile agent-mobility