title: On the support of scientific workflows over Pub/Sub brokers.
abstract: The execution of scientific workflows is gaining importance as more computing resources are available in the form of grid environments. The Publish/Subscribe paradigm offers well-proven solutions for sustaining distributed scenarios while maintaining the high level of task decoupling required by scientific workflows. In this paper, we propose a new model for supporting scientific workflows that improves the dissemination of control events. The proposed solution is based on the mapping of workflow tasks to the underlying Pub/Sub event layer, and the definition of interfaces and procedures for execution on brokers. In this paper we also analyze the strengths and weaknesses of current solutions that are based on existing message exchange models for scientific workflows. Finally, we explain how our model improves the information dissemination, event filtering, task decoupling and the monitoring of scientific workflows.
authors: Department of Telematics Engineering, Technical University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain. amorales@dit.upm.es
authors: Augusto
authors: A
authors: Morales
authors: Tomas
authors: T
authors: Robles
authors: Ramon
authors: R
authors: Alcarria
authors: Edwin
authors: E
authors: Cedeño
mesh_terms: D003628:Database Management Systems; D016208:Databases, Factual; D033181:Information Dissemination / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods*; D012586:Science / Q000379:methods*; D012984:Software; D012985:Software Design; D057188:Workflow