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| Author(s): |
Thiago Alvarenga Lechuga
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Instituto de Computação |
| Defense date: | 2010-10-21 |
| Examining board members: |
Maria Beatriz Felgar de Toledo;
Mario Antonio Ribeiro Dantas;
Islene Calciolari Garcia
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| Advisor: | Maria Beatriz Felgar de Toledo |
| Abstract | |
The use of heterogeneous distributed systems, such as Multi-Clusters, as known as Cluster of Clusters (CoC), and computational grids, enables the development of complex computational systems. However some of these systems require services to be easily composed and executed while maintaining the dependencies among them; both the services and the dependencies can be represented as workflows. Moreover, Web Services have been adopted in distributed systems, and WS-BPEL is the standard for Web Services composition. Accordingly, the objective of this work is to enable the execution of WS-BPEL workflows in a CoC. In order to achieve this execution, an extension to the WS-BPEL language is presented that includes the speciçation of Quality of Services (QoS), along with the required computational resources for service execution in CoCs. Additionally, this paper presents an infrastructure that enables the execution of such workflows in CoCs, and a case study using SHARCNET is discussed in order to evaluate the proposed approach. Finally, a real scientiç workflow to generate custom mosaics of the sky is implemented using the criated environment (AU) | |