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This paper shows how to organize dynamic workflow execution control based on predicates computed on internal global states of activities. Such paradigm has been implemented using special control processes called synchronizers. The proposed ideas extend the ordinary task and application workflow schemes by providing dynamic functional features. The proposed control has been provided in a graphical...
The paper presents how parallel program execution control based on monitoring of global application states can be used to co-ordinate workflow execution. Special control processes called synchronizers construct consistent application states based on state messages coming from constituent workflow activities. The synchronizers compute control predicates on consistent activities states and work out...
Recently, the graphical parallel programming environment P-GRADE based on message passing has been extended by advanced synchronization and control mechanisms (synchronizers) based on predicates computed on consistent application global states (PS-GRADE). In the new P-GRADE workflow system, the application workflow has been introduced to enable designing control flow between otherwise independent...
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