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@INPROCEEDINGS{Holl:129001,
      author       = {Holl, Sonja and Zimmermann, Olav and Demuth, Bastian and
                      Schuller, Bernd and Hofmann-Apitius, Martin},
      title        = {{S}ecure {M}ulti-{L}evel {P}arallel {E}xecution of
                      {S}cientific {W}orkflows on {HPC} {G}rid {R}esources by
                      {C}ombining {T}averna and {UNICORE} {S}ervices},
      volume       = {15},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich},
      reportid     = {FZJ-2013-00524},
      isbn         = {978-3-89336-829-7},
      series       = {Schriften des Forschungszentrums Jülich, IAS Series},
      pages        = {27-34},
      year         = {2012},
      comment      = {UNICORE Summit 2012, Proceedings, 30 - 31 May 2012 |
                      Dresden, Germany},
      booktitle     = {UNICORE Summit 2012, Proceedings, 30 -
                       31 May 2012 | Dresden, Germany},
      abstract     = {Scientific workflows have emerged as a flexible and easily
                      comprehensible way to implement complex multi-step data
                      analysis problems. With surging data volumes and rising
                      complexity of these workflows the demand for parallel,
                      distributed execution of such workflows in high performance
                      computing (HPC) and high throughput computing (HTC)
                      environments has increased significantly. One of the major
                      challenges when migrating client based tools to large
                      distributed environments is security. Some workflow
                      management systems (WMS) like Taverna, a system widely used
                      in the life science community, provide basic security
                      features. Hence, during the execution of a Taverna workflow
                      on the client individual workflow steps can be securely
                      distributed via UNICORE on the Grid. But WMS generally lack
                      extended security mechanisms, such as trust delegation to
                      support an extended distributed Grid submission mechanism of
                      entire workflows. We describe a novel security propagation
                      mechanism in this paper to enable a secure workflow
                      submission. Additionally, we describe our optimization use
                      case and its performance in an established three tier Grid
                      architecture.},
      month         = {May},
      date          = {2012-05-30},
      organization  = {UNICORE Summit 2012, Dresden
                       (Germany), 30 May 2012 - 31 May 2012},
      cin          = {JSC},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {412 - Grid Technologies and Infrastructures (POF2-412) /
                      411 - Computational Science and Mathematical Methods
                      (POF2-411)},
      pid          = {G:(DE-HGF)POF2-412 / G:(DE-HGF)POF2-411},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      url          = {https://juser.fz-juelich.de/record/129001},
}