ATLAS/ARDA LCG Demo

ATLAS Distributed Analysis

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

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

Prodsys Architecure

LexorLCGSites

Eowyn

ATCOM

Prodsys DB (Oracle)

CondorGExecutor

ResourceBroker

CondorGNegotiator

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

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

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

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

Demo

Demonstrate of the ATCOM UI

“Real” user analysis job performing an analysis of Z→

GANGA: Single frontend for multiple systems

GANGA Architecture

Demo

Demonstrate GANGA CLI Integration with build environment

Use GANGA to define a job on the fly ttbar example

Submit it to LCG

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