A General Architecture for Demand Migration in a Demand-Driven Execution Engine in a Heterogeneous and Distributed Environment

Abstract

This article is an overview of the GIPSY Demand Migration System (DMS). This system brings a DemandDriven Execution Engine like the one used in the GIPSY to a high level of distributiveness and interoperability of operational nodes, by mixing together advanced distributed technologies. The main Demand Migration System's artifacts are discussed, and their different distributions within the GIPSY are surveyed. The article concludes with a presentation of a successful GIPSY Demand Migration implementation, based on JINI. This paper describes only the aspects of the GIPSY Demand Migration, i.e. it does not deal with load balancing and efficiency aspects of the GIPSY, as these are to be tackled by other subsystems of the GIPSY.

Self-Forensics Through Case Studies of Small-to-Medium Software Systems

“…GEE is the component where the distributed demand-driven evaluation takes place, e.g. relying on the Demand Migration System (DMS) [36], [37], and the multi-tier architecture overall [34], [38]. The Demand Migration System (DMS) in here is an implementation of the Demand Migration Framework (DMF) introduced earlier by Vassev and extended by Pourteymour [39], [40], [41], [37].…”

Developing intelligent sensor networks

“…The framework provides a context for performing m igration activities, where the m igrated messaging objects encapsulate both behavior and data. In general, DMF may be used to derive a generic architecture for the im plementation of special family of Demand Migration Systems (DMSs) [8].…”

“…DMF (Demand Migration Framework) [8] is a generic scheme for migrating inform ation in the fo rm of messaging objects, in a heterogeneous and distributed e nvironment determined by both information senders and informati on recipients (both termed as communication nodes). The framework provides a context for performing m igration activities, where the m igrated messaging objects encapsulate both behavior and data.…”

“…Note that ASSL generates Java code [4] and the employed DMS [8] (a DMF ins tance) is J INI-based [15] , which is a J ava application as well.…”

“…Note that with ASSL we successfully built ASs, such as prototy pes simulating both the NASA ANTS [6] and the NASA Voy ager [7] missions. Moreover, in order to connect these intelligent sensor nodes in an ISN, we refer to a special networking mechanism called DMF (Demand Migration Framework) [8]. Neither ASSL nor DMF were originally developed for the purpose of building ISNs, but the combination of both allows for this successful technological convergence.…”