A Proxy Based Efficient Checkpointing Scheme for Fault

Abstract

Mobile Grid is an emerging and prospering field of distributed computing where mobile devices are enjoying the benefits of Grid. Challenges faced by mobile Grid are unpredictable network quality, lower trust, limited resources (battery power, network bandwidth, storage, processing power, etc) and extended periods of disconnections which may result in lost of the work done by these devices. We, therefore, need a proper fault tolerance scheme for these mobile hosts. A major issue is the appropriate handling of failures with minimal processing and storage overhead on mobile hosts. To meet these goals, we propose a proxy-based coordinated checkpointing scheme for our mobile to Grid middleware, Mobile Access to Grid Infrastructure (MAGi). In this scheme mobile hosts seamlessly store checkpoints on their respective proxies running on the middleware. Together with the central coordinator component, these proxies act as a centralized checkpointing store.