CMS workflow execution using intelligent job scheduling and data access strategies

Hernandez, Jos� M.; Metson, Simon; Hasham, Khawar; Delgado Peris, Antonio; Anjum, Ashiq; Evans, Dave; Gowdy, Stephen; Huedo, Eduardo; Hufnagel, Dirk; Van Lingen, Frank; McClatchey, Richard

Abstract

Complex scientific workflows can process large amounts of data using thousands of tasks. The turnaround times of these workflows are often affected by various latencies such as the resource discovery, scheduling and data access latencies for the individual workflow processes or actors. Minimizing these latencies will improve the overall execution time of a workflow and thus lead to a more efficient and robust processing environment. In this paper, we propose a pilot job concept that has intelligent data reuse and job execution strategies to minimize the scheduling, queuing, execution and data access latencies. The results have shown that significant improvements in the overall turnaround time of a workflow can be achieved with this approach. The proposed approach has been evaluated, first using the CMS Tier0 data processing workflow, and then simulating the workflows to evaluate its effectiveness in a controlled environment. © 2011 IEEE.

• Journal Article Type: Article
• Publication Date: Jun 1, 2011
• Deposit Date: Nov 15, 2010
• Publicly Available Date: Feb 11, 2016
• Journal: IEEE Transactions on Nuclear Science
• Print ISSN: 0018-9499
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 58
• Issue: 3 PART 3
• Pages: 1221-1232
• DOI: https://doi.org/10.1109/TNS.2011.2146276
• Keywords: data cahce, grid, latency, pilot jobs, workflow
• Public URL: https://uwe-repository.worktribe.com/output/961950
• Publisher URL: http://dx.doi.org/10.1109/TNS.2011.2146276
• Additional Information: Additional Information : © 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
• Contract Date: Feb 11, 2016