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Scalability and interoperability within glideinWMS

Scalability and interoperability within glideinWMS,10.1088/1742-6596/219/6/062036,Journal of Physics: Conference Series,D. Bradley,I. Sfiligoi,S. Padh

Scalability and interoperability within glideinWMS   (Citations: 1)
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Physicists have access to thousands of CPUs in grid federations such as OSG and EGEE. With the start-up of the LHC, it is essential for individuals or groups of users to wrap together available resources from multiple sites across multiple grids under a higher user-controlled layer in order to provide a homogeneous pool of available resources. One such system is glideinWMS, which is based on the Condor batch system. A general discussion of glideinWMS can be found elsewhere. Here, we focus on recent advances in extending its reach: scalability and integration of heterogeneous compute elements. We demonstrate that the new developments exceed the design goal of over 10,000 simultaneous running jobs under a single Condor schedd, using strong security protocols across global networks, and sustaining a steady-state job completion rate of a few Hz. We also show interoperability across heterogeneous computing elements achieved using client-side methods. We discuss this technique and the challenges in direct access to NorduGrid and CREAM compute elements, in addition to Globus based systems.
Journal: Journal of Physics: Conference Series , vol. 219, no. 6, 2010
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