Atlas:Analysis Challenge

ATLAS Analysis challenge

Goals

• measure "real" analysis job efficiency and turn around on several sites of a given cloud
• measure data access performance
• check load balancing between different users and different analysis tools (Ganga vs pAthena)
• check load balancing between analysis and MC production

First exercise on the FR Cloud in december 08 (proposition)

DA challenges have been performed on IT and DE clouds in october 08. Proposition has been made to extend this cloud-by cloud challenge to the FR Cloud. See ATLAS coordination DA challenge meeting (Nov. 20)

• http://indico.cern.ch/conferenceDisplay.py?confId=45718

First exercise is limited in time (a few days) and requires careful attention of site administrators during that period,in particular network (internal & external), disk, cpu monitoring.

This first try can be run centrally. ATLAS coordination (Dan van der Ster and Johannes Elmsheuser) needs to know which sites to be tested and when. Any site in the Tiers_of_ATLAS list can participate.

Testing framework

The testing framework is ganga-based. It is currently using LCG backend but it is foreseen to allow the use of PANDA backend as well. For long terms plans

Results

See

• ATLAS Twiki page : https://twiki.cern.ch/twiki/bin/view/Main/GangaSiteTests
• Results of analysis challenge performed on [IT Cloud:http://indico.cern.ch/getFile.py/access?contribId=128&sessionId=8&resId=0&materialId=slides&confId=22137]
• Results of [DE Cloud:http://indico.cern.ch/getFile.py/access?contribId=128&sessionId=8&resId=0&materialId=slides&confId=22137]