IHG (Innsbrucker Hochenergiephysikgruppe)

• The High Energy – Particle Physics group (IHG) at the Institute for Experimental Physics Innsbruck is involved since its beginning of the activity in 1968 in the data analysis for significant HEP Experiments at CERN. For the time being, IHG is member of ALEPH and ATLAS Collaborations.

• The research fields of IHG includes:

– Test and Phenomenology of the Theory of Strong Interactions (Quantum Chromodynamics, QCD)

– Searches for Higgs Bosons

– B-Physics

– Software Development and Validation for HEP Experiments

– Participation to the development and deployment of the world-wide GRIDstructure for the analyses of HEP data.

• ATLAS Detector (http://atlasexperiment.org)

• Collaboration: 1800 physicists from more than 150 universities and laboratories in 34 countries.

• ~ 1 Petabyte / year, analysation needs approx. 50.000 CPUs

• Start: 2007

LHC-Computing Grid (LCG)

• LCG-Cluster HEPHY-UIBK: 6 CPUs (soon 24), 1.7 TB disk storage

• participates in ATLAS Data Challenge 2 (Start end of june)

• ATLAS DC2 uses LCG, Nordugrid, Grid2003, e.g. 100000 detector simulation jobs, each up to 30 hours (SI2k=1000)

http://physik.uibk.ac.at/hephy/grid/project

ZID-Grid Innsbruck

• Collaboration HEPHY and ZID Innsbruck

• Using student‘s PC-labs over night, weekends, during holidays

• Up to 299 PCs:

– 145 P 4, 1.8 GHz, 512 MB RAM

– 88 P 4, 2GHz, 256 MB RAM

– 66 P 3, 1GHz, 256 MB RAM

• can be grouped into clusters as needed (e.g. several clusters as development testbed and one or more production cluster) with OpenPBS, Torque, SGE, or Condor as local resource management

• MDS: Glue Schema, information collected at agrid.uibk.ac.at

• Prototype of Web interface (upload files and proxy-certificate using grid certificate, define several parameter studies in one text file)

http://agrid.uibk.ac.at/zidgrid

Example: CPU-Load (seen by Ganglia Monitor) for a Detector simulation using two clusters over a weekend, 141 jobs total, 43 GB Output (transferred with gridftp)Runtime: +80% compared to HEPHY LCG-Cluster

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