On the Support of Scientific Workflows over Pub/Sub Brokers

Sensors

Augusto Morales¹  Tomas Robles²  Ramon Alcarria² 

[1] Department of Telematics Engineering, Technical University of Madrid, Av. Complutense 30, Ciudad Universitaria, 28040 Madrid, Spain;

关键词: scientific workflow;    publish/subscribe;    distributed execution models;    brokers;    logic gates;    workflow patterns;   

DOI  :  10.3390/s130810954

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.