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JUMP Software Distributed Shared Memory  

A memory consistency model specifies the behavior of the memory in a software distributed shared memory (DSM) system, and it has crucial impact on system performance. Scope consistency is one of such models developed recently to achieve high efficiency while retaining good programmability. This research scheme will discuss a home-based protocol for realizing the scope consistency model which was implemented in JiaJia, a software DSM system. This protocol lets every memory page have a fixed "home" processor to hold the master copy for maintaining the data consistency. The research scheme will also present a new home-based algorithm for improving this protocol by allowing the home of each page to float. It is expected that this protocol can reduce the amount of data communication and hence improve the performance in a cluster environment.

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