TY - JOUR A1 - Bergmann, Sandra A1 - Demuth, Bastian A1 - Sander, Volker T1 - A Web Framework for Workflow Submission and Monitoring via UNICORE 6 based on Distributable Scientific Workflow Templates JF - UNICORE Summit 2011 : proceedings, 7-8 July 2011, Torun, Poland / Mathilde Romberg ... (Eds.) Y1 - 2011 SN - 9783893367504 N1 - UNICORE Summit ; (2011 ; 2011.07.07-08 ; Torun) ; Schriften des Forschungszentrums Jülich IAS Series 9 SP - 45 EP - 50 PB - Forschungszentrum Jülich CY - Jülich ER - TY - JOUR A1 - Berretz, F. A1 - Skorupa, S. A1 - Sander, Volker A1 - Belloum, A. T1 - Towards an actor-driven workflow management system for grids JF - International Symposium on Collaborative Technologies and Systems (CTS), 2010 : 17 - 21 May 2010, Chicago, Illinois, USA / IEEE Y1 - 2010 SN - 978-1-4244-6619-1 SP - 611 EP - 616 PB - IEEE CY - Piscataway, NJ ER - TY - JOUR A1 - Berretz, Frank A1 - Skorupa, Sasche A1 - Sander, Volker A1 - Belloum, Adam A1 - Bubak, Marian T1 - Actor-Driven Workflow Execution in Distributed Environments JF - Euro-Par 2010 Parallel Processing Workshops : HeteroPAR, HPCC, HiBB, CoreGrid, UCHPC, HPCF, PROPER, CCPI, VHPC ; Ischia, Italy, August 31 - September 3, 2010 ; revised selected papers / Mario R. Guarracino ... (eds.) Y1 - 2011 SN - 978-3-642-21877-4 N1 - Lecture Notes in Computer Science ; 6586 SP - 287 EP - 294 PB - Springer CY - Berlin ER - TY - CHAP A1 - Bozakov, Zdravko A1 - Sander, Volker T1 - OpenFlow: A Perspective for Building Versatile Networks T2 - Network-Embedded Management and Applications Y1 - 2013 SN - 978-1-4419-6769-5 U6 - http://dx.doi.org/10.1007/978-1-4419-6769-5_11 SP - 217 EP - 245 PB - Springer CY - New York, NY ER - TY - JOUR A1 - Gerhards, M. A1 - Belloum, A. A1 - Berretz, F. A1 - Sander, Volker A1 - Skorupa, S. T1 - A history-tracing XML-based provenance framework for workflows Y1 - 2010 SN - 978-1-4244-8989-3 N1 - Workflows in Support of Large-Scale Science (WORKS), 2010 5th Workshop on SP - 1 EP - 10 ER - TY - JOUR A1 - Gerhards, M. A1 - Skorupa, S. A1 - Sander, Volker A1 - Belloum, A. A1 - Vesunin, D. A1 - Benabdelkader, A. T1 - HisT/PLIER : A Two-Fold Provenance Approach for Grid-Enabled Scientific Workflows Using WS-VLAM JF - 12th IEEE/ACM International Conference on Grid Computing (GRID), 2011 Y1 - 2011 U6 - http://dx.doi.org/10.1109/Grid.2011.39 SP - 224 EP - 225 PB - IEEE CY - New York ER - TY - JOUR A1 - Gerhards, M. A1 - Skorupa, S. A1 - Sander, Volker A1 - Pfeiffer, P. A1 - Belloum, A. T1 - Towards a security framework for a WS-HumanTask processor JF - 7th International Conference on Network and Service Management (CNSM), 2011 Paris Y1 - 2011 SN - 978-3-901882-44-9 SP - 1 EP - 5 PB - IEEE CY - New York ER - TY - CHAP A1 - Gerhards, Michael A1 - Sander, Volker A1 - Belloum, Adam ED - Zimmermann, Wolf ED - Lee, Yong Woo ED - Demchenko, Yuri T1 - About the flexible Migration of Workflow Tasks to Clouds : Combining on- and off-premise Executions of Applications T2 - CLOUD COMPUTING 2012 : The Third International Conference on Cloud Computing, GRIDs, and Virtualization ; July 22-27, 2012 - Nice, France N2 - An increasing number of applications target their executions on specific hardware like general purpose Graphics Processing Units. Some Cloud Computing providers offer this specific hardware so that organizations can rent such resources. However, outsourcing the whole application to the Cloud causes avoidable costs if only some parts of the application benefit from the specific expensive hardware. A partial execution of applications in the Cloud is a tradeoff between costs and efficiency. This paper addresses the demand for a consistent framework that allows for a mixture of on- and off-premise calculations by migrating only specific parts to a Cloud. It uses the concept of workflows to present how individual workflow tasks can be migrated to the Cloud whereas the remaining tasks are executed on-premise. KW - Workflow Orchestration KW - Workflow KW - Grid Computing KW - Cloud Service Broker KW - Cloud Computing Y1 - 2012 SN - 978-1-61208-216-5 SP - 82 EP - 87 PB - IARIA Journals ER - TY - CHAP A1 - Gerhards, Michael A1 - Sander, Volker A1 - Belloum, Adam T1 - Seamlessly enabling the use of cloud resources in workflows T2 - Cloud Computing 2013 : The Fourth International Conference on Cloud Computing, GRIDs, and Virtualization : May 27 - June 1, 2013 - Valencia, Spain Y1 - 2013 SN - 978-1-61208-271-4 SP - 108 EP - 114 PB - Curren CY - Red Hook, NY ER - TY - JOUR A1 - Gerhards, Michael A1 - Sander, Volker A1 - Zivkovic, Miroslav A1 - Belloum, Adam A1 - Bubak, Marian T1 - New approach to allocation planning of many‐task workflows on clouds JF - Concurrency and Computation: Practice and Experience N2 - Experience has shown that a priori created static resource allocation plans are vulnerable to runtime deviations and hence often become uneconomic or highly exceed a predefined soft deadline. The assumption of constant task execution times during allocation planning is even more unlikely in a cloud environment where virtualized resources vary in performance. Revising the initially created resource allocation plan at runtime allows the scheduler to react on deviations between planning and execution. Such an adaptive rescheduling of a many-task application workflow is only feasible, when the planning time can be handled efficiently at runtime. In this paper, we present the static low-complexity resource allocation planning algorithm (LCP) applicable to efficiently schedule many-task scientific application workflows on cloud resources of different capabilities. The benefits of the presented algorithm are benchmarked against alternative approaches. The benchmark results show that LCP is not only able to compete against higher complexity algorithms in terms of planned costs and planned makespan but also outperforms them significantly by magnitudes of 2 to 160 in terms of required planning time. Hence, LCP is superior in terms of practical usability where low planning time is essential such as in our targeted online rescheduling scenario. Y1 - 2020 U6 - http://dx.doi.org/10.1002/cpe.5404 SN - 1532-0634 VL - 32 IS - 2 Article e5404 SP - 1 EP - 16 PB - Wiley CY - Chichester ER -