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Distributed Shared Memory in Global Area Networks

Authors: Happe, Hans Henrik, Vinter, Brian


Distributed Shared Memory (DSM) has many advantages in heterogeneousenvironments, such as geographically distant clusters or The Grid. These includes:locality utilization and replication transparency. The fact that processes communicateindirectly through memory rather than directly, is giving DSM these advantages.This paper presents the design of Global PastSet (GPS) which is a DSM systemtargeted at global area networks. GPS is based on the DSM system PastSet [1] that hasbeen very effective in homogeneous cluster environments. GPS utilizes consistencycontrol migration and replication to scale in heterogeneous environments. This hasresulted in a token-based mutual exclusion algorithm that considers locality and analgorithm for locating replicas. GPS has been simulated in multi-cluster environmentswith up to 2048 nodes with very promising results.


Communicating Process Architectures 2003, Jan F. Broenink, Gerald H. Hilderink, 2003, pp 49 - 62 published by IOS Press, Amsterdam

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