Dynamic Resource Discovery for Applications Survivability in Distributed Real-Time Systems

In this paper we propose a new resource discovery protocol, REALTOR, which is based on a combination of pullbased and push-based resource information dissemination. REALTOR has been designed for real-time componentbased distributed applications in very dynamic or adverse environments. REALTOR supports survivability and information assurance by allowing the migration of components to safe locations under emergencies like external attack, malfunction, or lack of resources. Simulation studies show that under normal and heavy load conditions REALTOR remains very effective in finding available resources with a reasonably low communication overhead. REALTOR 1) effectively locates resources under highly dynamic conditions, 2) has an overhead that is system-size independent, and 3) works well in highly adverse environments. We evaluate the effectiveness of a REALTOR implementation as part of Agile Objects, an infrastructure for real-time capable, highly mobile Java components. 1

• Type: Conference
• Year: 2003
• Where: IPPS
• Authors: Byung-Kyu Choi, Sangig Rho, Riccardo Bettati
• Keywords: Adverse Environments, Distributed And Parallel Computing, IPPS 2003, REALTOR, REALTOR Supports Survivability