Alumni - Dr. rer. nat. Mirko Sonntag

Former Research Associate and Ph.D. Student

Research Area

SimTech

Stuttgart Research Centre for Simulation Technologie and Cluster of Excellence "Simulation Technology (SimTech)"

Working Area of IAAS In "SimTech", the IAAS is working on the creation of a workflow management system (WfMS) for modeling and executing simulation workflows. The WfMS will be especially tailored to requirements of scientists. The underlying technical complexity ought to be hidden for scientists to enable them to concentrate on their core competencies.

We want to achieve this aim with three tightly coupled projects, each of which dealing with a partial aspect of the WfMS:

  • Modelling of Simulation Workflows
  • Runtime for Simulation Workflows
  • Flexibility of Simulation Workflows
Flexibility of Simulation Workflows Usually, simulation workflows are exposed to frequent changes: the underlying infrastructure is often highly dynamic (e.g. the insertion of additional processors), simulations need to be adapted during execution (e.g. the modification of parameters, the insertion of additional steps). In this project, I was therefore concerned with flexibility of simulation workflows. This especially comprised avoidance of changes of workflows as well as the adaptation of workflows at runtime. Consequently, flexibility has an impact on both buildtime and runtime of workflows. Within this project requirements of scientists with respect to flexibility were gathered, classified, assessed, and implemented. Moreover, a monitoring tool was developed that enables scientists to intuitively modify running simulations to satisfy the "trial-and-error" approach they follow when doing their work.
Challenges
  • Compensation in modified simulations
  • Validation of adapted workflows
  • Persistent storage of the execution history of modified simulations
  • Persistent storage of changes on workflows
  • Execution of workflow fragments (i.e. incompletely modeled workflows)
  • Repeated execution of activities
  • Enforcement of paths
  • Hiding of the technical details of underlying adaptability and deployment mechanisms
Example Borrowed from Wassink et al., "Designing workflows on the fly using e-BioFlow," in ICSOC 2009.

Model-as-you-go example

Click here for a larger illustration.

Apache ODE Pluggable Framework

Implementation of the Pluggable Frameworks for the Apache Orchestration Director Engine (ODE)
ODE-PGF

Material

Awards

Publications

Book Chapters

  1. Görlach, Katharina; Sonntag, Mirko; Karastoyanova, Dimka; Leymann, Frank; Reiter, Michael: Conventional Workflow Technology for Scientific Simulation. In: Yang, Xiaoyu (Hrsg); Wang, Lizhe (Hrsg); Jie, Wei (Hrsg): Guide to e-Science, Springer-Verlag, 2011 ( pdf).

Journal Papers

  1. Sonntag, Mirko; Karastoyanova, Dimka: Model-as-you-go: An Approach for an Advanced Infrastructure for Scientific Workflows. In: Journal of Grid Computing. Vol. 11(3), Springer Verlag, 2013.
  2. Sonntag, Mirko; Karastoyanova, Dimka: Ad hoc Iteration and Re-execution of Activities in Workflows. In: International Journal On Advances in Software. Vol. 5(1 & 2), Xpert Publishing Services, 2012 ( pdf).
  3. Kopp, Oliver; Görlach, Katharina; Karastoyanova, Dimka; Leymann, Frank; Reiter, Michael; Schumm, David; Sonntag, Mirko; Strauch, Steve; Unger, Tobias; Wieland, Matthias; Khalaf, Rania: A Classification of BPEL Extensions. In: Journal of Systems Integration. Vol. 2(4), Online, 2011 ( pdf).
  4. Schumm, David; Karastoyanova, Dimka; Kopp, Oliver; Leymann, Frank; Sonntag, Mirko; Strauch, Steve: Process Fragment Libraries for Easier and Faster Development of Process-based Applications. In: Journal of Systems Integration. Vol. 2(1), Online, 2011 ( pdf).
  5. Sonntag, Mirko; Görlach, Katharina; Karastoyanova, Dimka; Leymann, Frank; Reiter, Michael: Process Space-based Scientific Workflow Enactment. In: International Journal of Business Process Integration and Management (IJBPIM) Special Issue on Scientific Workflows, Vol 5, No. 1, pp. 32-44, Inderscience Publishers, 2010 ( pdf).

Conference Papers

  1. Karastoyanova, Dimka; Dentsas, Dimitrios; Schumm, David; Sonntag, Mirko; Sun, Lina; Vukojevic-Haupt, Karolina: Service-based Integration of Human Users in Workflow-driven Scientific Experiments. In: Proceedings of the 8th IEEE International Conference on eScience (eScience 2012) ( pdf).
  2. Sonntag, Mirko; Hotta, Sven; Karastoyanova, Dimka; Molnar, David; Schmauder, Siegfried: Using Services and Service Compositions to Enable the Distributed Execution of Legacy Simulation Applications. In: Abramowicz, W. (Hrsg); Llorente, I.M. (Hrsg); Surridge, M. (Hrsg); Zisman, A. (Hrsg); Vayssière, J. (Hrsg): Towards a Service-Based Internet, Proceedings of the 4th European Conference ServiceWave 2011, Poznan, Poland, 2011.
  3. Sonntag, Mirko; Görlach, Katharina; Karastoyanova, Dimka; Leymann, Frank; Malets, Polina; Schumm, David: Views on Scientific Workflows. In: Proceedings of the 10th International Conference on Perspectives in Business Informatics Research (BIR 2011), 2011 ( pdf).
  4. Sonntag, Mirko; Karastoyanova, Dimka: Enforcing the Repeated Execution of Logic in Workflows. In: Proceedings of the 1st International Conference on Business Intelligence and Technology (BUSTECH 2011), Rome, Italy, 2011 ( pdf).
  5. Sonntag, Mirko; Karastoyanova, Dimka: Compensation of Adapted Service Orchestration Logic in BPELnAspects. In: Proceedings of the 9th International Conference on Business Process Management (BPM 2011), Clermont-Ferrand, France, 2011 ( pdf).
  6. Sonntag, Mirko; Karastoyanova, Dimka; Deelman, Ewa: Bridging The Gap Between Business And Scientific Workflows. In: Proceedings of the IEEE 6th International Conference on e-Science, Brisbane, Australia, December 7-10, 2010 ( pdf).
  7. Sonntag, Mirko; Currle-Linde, Natalia; Görlach, Katharina; Karastoyanova, Dimka: Towards Simulation Workflows With BPEL: Deriving Missing Features From GriCoL. In: Alhajj, R.S. (Hrsg); Leung, V.C.M. (Hrsg); Saif, M. (Hrsg); Thring, R. (Hrsg): Proceedings of the 21st IASTED International Conference on Modelling and Simulation (MS 2010), 2010.
  8. Sonntag, Mirko; Karastoyanova, Dimka: Next Generation Interactive Scientific Experimenting Based On The Workflow Technology. In: Alhajj, R.S. (Hrsg); Leung, V.C.M. (Hrsg); Saif, M. (Hrsg); Thring, R. (Hrsg): Proceedings of the 21st IASTED International Conference on Modelling and Simulation (MS 2010), 2010.
  9. Nitzsche, Jörg; Höhersteiger, Benjamin; Leymann, Frank; Sonntag, Mirko; Tost, Markus: Defining the Behaviour of BPELlight Interaction Activities Using Message Exchange Patterns. In: Proceedings of the Service Wave 2008.

Workshop Papers

  1. Sonntag, Mirko; Hahn, Michael; Karastoyanova, Dimka: Mayflower - Explorative Modeling of Scientific Workflows with BPEL. In: Proceedings of the Demo Track of the 10th International Conference on Business Process Management (BPM 2012), CEUR Workshop Proceedings, 2012 ( pdf).
  2. Schumm, David; Dentsas, Dimitrios; Hahn, Michael; Karastoyanova, Dimka; Leymann, Frank; Sonntag, Mirko: Web Service Composition Reuse through Shared Process Fragment Libraries. In: Proceedings of the 12th International Conference on Web Engineering (ICWE 2012 Demos) ( pdf).
  3. Sonntag, Mirko; Hotta, Sven; Karastoyanova, Dimka; Molnar, David; Schmauder, Siegfried: Workflow-Based Distributed Environment For Legacy Simulation Applications. In: Proceedings of the 6th International Conference on Software and Data Technologies (ICSOFT 2011), Poster Paper ( pdf).
  4. Sonntag, Mirko; Karastoyanova, Dimka: Concurrent Workflow Evolution. In: Electronic Communications of the EASST, Volume 37, ISSN 1863-2122, 2011 ( pdf).
  5. Sonntag, Mirko; Karastoyanova, Dimka: BPELnAspects And Compensation: Adapted Service Orchestration Logic and its Compensation Using Aspects. In: Weske, Mathias (Hrsg); Yang, Jian (Hrsg); Maglio, Paul (Hrsg); Fantinato, Marcelo (Hrsg): Proceedings of the 8th Int. Conf. on Service-Oriented Computing (ICSOC 2010), Demo Track, 2010 ( pdf).
  6. Sonntag, Mirko; Karastoyanova, Dimka; Deelman, Ewa: BPEL4Pegasus: Combining Business and Scientific Workflows. In: Weske, Mathias (Hrsg); Yang, Jian (Hrsg); Maglio, Paul (Hrsg); Fantinato, Marcelo (Hrsg): Proceedings of the 8th Int. Conf. on Service-Oriented Computing (ICSOC 2010), Demo Track, 2010 ( pdf).
  7. Sonntag, Mirko; Karastoyanova, Dimka; Leymann, Frank: The Missing Features of Workflow Systems for Scientific Computations. In: Proceedings of the 3rd Grid Workflow Workshop (GWW), Software Engineering Conference, GI-Edition Lecture Notes in Informatics (LNI), P-160, 2010 ( pdf).

Posters

  1. Sonntag, Mirko; Karastoyanova, Dimka: Workflow-Based Distributed Environment for Legacy Simulation Applications. 6th International Conference on Software and Data Technologies (ICSOFT 2011), Seville, Spain, July 2011. ( pdf)
  2. Sonntag, Mirko; Karastoyanova, Dimka: Workflow-based Simulation of Solids. International Conference on Simulation Technology (SimTech 2011), Stuttgart, Germany, June 2011. ( pdf)

Technical Reports

  1. Kopp, Oliver; Henke, Sebastian; Karastoyanova, Dimka; Khalaf, Rania; Leymann, Frank; Sonntag, Mirko; Steinmetz, Thomas; Unger, Tobias; Wetzstein, Branimir: An Event Model for WS-BPEL 2.0, Technical Report No. 2011/07.

Case Study

  1. Wagner, Sebastian; Sonntag, Mirko; Gostmann, Hendrik: Vergleich von Business Activity Monitoring Werkzeugen, Student Report Software Engineering No. 76, 2007.

Professional Activities