Selected applications using DIANE and Ganga
LatticeQCD on the Grid
This is a large scale simulation in theoretical physics to study the behaviour of the quark-gluon plasma.The first goal of running Lattice QCD application on the Grid was to perform computat ions equivalent to 200-300 CPU-years in a period of 2-3 months. Such task requires approximately 1000 processors on the Grid running continuously over the entire period (corresponding to speedup equal to 1000).
The system based on DIANE entered the routine production mode and it now runs autonomously on the EGEE Grid over several months and requires very little human intervention.
- EGEE Newsletter: Searching for new physics with Ganga and DIANE
- published scientific results: arXiv:0808.1096
ITU RRC06 Telecommunication Application
In 2006, the Regional Radio Conference (RRC06) conducted by the International Telecommunication Union (ITU) established a new frequency plan for the introduction of digital broadcasting in Europe, Africa, Arab States and former-USSR countries. The preparation and the validation of the plan required dependable and efficient computing capability. To achieve it, a dedicated PC farm, developed and deployed by the ITU, was complemented by the distributed system based on the EGEE Grid and DIANE.The validation cycle of the frequency plan required the periodic execution of more than 200,000 short jobs, amounting to 40 CPU-days, in less than 12 hours. The nature of the application required dynamic workload-balancing and low-latency access to the computing resources.
- Dependable Distributed Computing for the International Telecommunication Union Regional Radio Conference RRC06, arXiv:0906.2143
- Scheduling for Responsive Grids, Grid Computing Journal
Geant4 release validation
DIANE is used routinely to perform regression testing of Geant4 releases.- CERN Computer Newsletter: The Grid improves efficiency of Geant4 production cycles
Avian Flu Drug Design
In 2006 DIANE was used to perform a sizeable fraction of an in silico drug discovery application using the EGEE and other Grid infrastructures. The challenge was to analyse possible drug components against the avian flu virus H5N1. This activity showed that a user-level scheduler like DIANE can improve the distribution efficiency on the Grid from below 40% to above 80% by optimizing the allocation of the fine-grained computing tasks. Automatic error-recovery mechanisms proved to be efficient in extended periods of continuous work: the part performed with DIANE lasted around 30 days.Other
Grid-cast from User Forum in Catania 2009:
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