11 December 2000Paolo Capiluppi - DataGrid Testbed Workshop

CMS Applications Requirements

DataGrid Testbed Workshop

Milano, 11 December 2000

Paolo Capiluppi,

Dept. of Physics and INFN, Bologna

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CMS Milestones and DataGrid “Runs”CMS Milestones and DataGrid “Runs”Dec 2001: Run #0 endsDec 2001: CMS DAQ TDR (with l3 triggers)

CMSIM as application? Prototype of distributed reconstruction? It might be too late for DAQ TDR.

Dec 2002: Run #1 endsDec 2002: CMS Computing and Software TDR

Try to have Reconstruction GRIDified? Too late for strategic architecture planning?

Dec 2003: Run #2 endsDec 2003: CMS Physics TDR

Goal should be the distributed Analysis. Too ambitious?

We need to come to a more “synchronized” schedule that matches CMS deliverables.

Distributed analysis is the “real” challenge, and this should be tested before we go for Computing TDR

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Milestones and Testbed releases (1)Milestones and Testbed releases (1)Testbed realease0 (1Q 2001) to be considered as a proof of concept:

we will try to provide a “distributed CMSIM application” as “use case”

Need for authentication, authorization, Globus tools, GDMP, monitor of simulation job’s status, local scheduler interfaced with GRAM, and of course CMS software. (on Linux RH6.1)

Tests should last for days, on a largely distributed sites, and do not need for large computing resources, but for a “main” site to receive the Output (dimension depends on the amount of events simulated)

Testbed release1 (3Q 2001) is first real test: We should go for a complete process of simulation (including

ORCA) Need for Objectivity installed (AMS servers, etc : see the “CMS italian

Floppy”), coordination in database ID, architecture of data servers for “pile-up” events, etc.

We do not think that such a test can be done on a large number of testbed sites, being the coordination and the local site effort hard to commit

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Testbed release2 (3Q 2002) is too late! What can we learn at that time for CMS Computing architecture?

CMS Computing TDR is due for end 2002 (should we delay it?!) Analysis is the major challenge for LHC Experiments If Grid projects want to give a contribution to LHC Computing

architectures the project’s deliverables have to be revised

Testbed release3 (3Q 2003) is the final chance for delivering results

Indeed for what?

Milestones and Testbed releases (2)Milestones and Testbed releases (2)

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Toolkit for installation and configuration of CMS farms

Toolkit for installation and configuration of CMS farms

OS Installation and configurationsCMS SW installation and configuration in the CERN environmentAutomatic updates and monitoring for OS and CMS productionAutomatic installation of Globus toolkitAutomatic installation of GDMPSupport for public and hidden farmsAdopted by INFN-GRID computer fabric team to make it of general use

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CMS (Data)GRID Test bed Siteswilling to contribute

CMS (Data)GRID Test bed Siteswilling to contribute

CERN: CMSFinland: CSCFrance: Ecole Polytechnique, Saclay, Lyon CCIN2P3Germany: ZIB (Berlin)Portugal: LIP (Lisboa)Spain: IFCA (Santander), CIEMAT(Madrid), UAM(Madrid)Italy (INFN): Bari, Bologna, CNAF (Bologna), Catania, Legnaro, Padova, Pisa, RomaRussia: SINP (Moscow), ITEP (Moscow), ITEP (Protvino), JINR (Dubna)UK: RAL, Bristol, Imperial CollegeUS: Fermilab, Caltech, San Diego, Florida, MIT

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More by CMS availabilityfor Tests

More by CMS availabilityfor Tests

Tests with CMS Application during CMS distributed Production for HLT studies in Italy in 2000

See presentation by M. Sgaravatto, this Workshop

It’s a work done in the WP1, with the collaboration of CMS people

Synchronization is important!