Abstracts

Evaluation of Multicast Methods to Maintain a Global Name Space for Transparent Process Migration in Workstation Clusters

In this paper we examine the performance and fault tolerance of different multicast based methods for maintaining the consistence of distributed data, depending on the network topology and packet loss probability. We present a system model and analytical results. This work is motivated by experiences with our process migration system "PBeam". There we use a global virtual name space to achieve location transparency for process migration and checkpointing~/ rollback for distributed applications on clusters of Unix workstations. First measurements have shown that the maintenance of this global name space is critical for the performance of the entire system.

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