ATLAS/ARDA LCG Demo
description
Transcript of ATLAS/ARDA LCG Demo
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ATLAS/ARDA LCG Demo
ATLAS Distributed Analysis
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ATLAS strategy
Jobs to production system Access to all ATLAS resources
Jobs to each grid infrastructure LCG – Resource Broker OSG – PANDA Nordugrid – ARC Middleware
GANGA User Interface Project Seamless access to all possibilities for the users
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Work in progress
Various parts have reached different status of usability
Two aspects will be demonstarted Selection based on what was practical to demonstrate
Production system on LCG Real user analysis job Z→
GANGA Creation of example job on the fly tt analysis
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Prodsys Architecure
LexorLCGSites
Eowyn
ATCOM
Prodsys DB (Oracle)
CondorGExecutor
ResourceBroker
CondorGNegotiator
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Features for Distributed Analysis
Support for user defined jobs Part of the new release
Access to the job database by Atcom using grid authentication
As of today jobs are still run under the certificate of a manager
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Workload Management
CondorG Negotiator at CERN and in Canada
LCG Resource Broker New Lexor available
Under test right now A version supporting bulk submission will be
available soon
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Data management
New DMS DQ2 not yet fully deployed
Intermediate solution Central LFC lfc-atlas-test Also used for small productions
Plan to move to DQ2 asap
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Data
Merged Rome AODs 2700 files 150 GB
Has been replicated at several sites PIC, IFIC Valencia CNAF, Milano, Rome, Napoli, Frascati ASGC Taipeh FZK (planned)
Mixture of T1 & T2 according to ATLAS Computing model
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Demo
Demonstrate of the ATCOM UI
“Real” user analysis job performing an analysis of Z→
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GANGA: Single frontend for multiple systems
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GANGA Architecture
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Demo
Demonstrate GANGA CLI Integration with build environment
Use GANGA to define a job on the fly ttbar example
Submit it to LCG
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Timescales
Currently systems are under test by a small number of users
All systems aim for public access to the tools for early next year