21-27 March 2009
Europe/Prague timezone

Pilot Framework and the DIRAC WMS

26 Mar 2009, 08:00


Prague Congress Centre 5. května 65, 140 00 Prague 4, Czech Republic
Board: Thursday 013
poster Grid Middleware and Networking Technologies Poster session


Dr Ricardo Graciani Diaz (Universitat de Barcelona)


DIRAC, the LHCb community Grid solution, has pioneered the use of pilot jobs in the Grid. Pilot jobs provide a homogeneous interface to an heterogeneous set of computing resources. At the same time, pilot jobs allow to delay the scheduling decision to the last moment, thus taking into account the precise running conditions at the resource and last moment requests to the system. The DIRAC Workload Management System provides one single scheduling mechanism for jobs with very different profiles. To achieve an overall optimisation, it organizes pending jobs in task queues, both for individual users and production activities. Task queues are created with jobs having similar requirements. Following the VO policy a priority is assigned to each task queue. Pilot submission and subsequent job matching are based on these priorities following a statistical approach. Details of the implementation and the security aspects of this framework will be discussed.
Presentation type (oral | poster) oral

Primary authors

Mr Adrian Casajus Ramo (Universitat de Barcelona) Dr Andrei Tsaregorodtsev (CPPM Marseille) Dr Ricardo Graciani Diaz (Universitat de Barcelona)

Presentation Materials