1. SLICE Simulation for LHCb and Integrated Control Environment Gennady Kuznetsov & Glenn Patrick (RAL) Cosener’s House Workshop 23 rd May 2002

2. Current Architecture Production Manager Create no. of jobs (500 events each) Determine configuration Run executable Check data Copy data/logs Bookkeeping Database Physics Coordinator Physicist Monitoring via PVSS Submit jobs to distributed sites See what jobs are running Check configuration Kill jobs, etc Job Creation/Submission via Web Identify outstanding requests Select workflow Create scripts via Java servlets.

3. Update bookkeeping database Transfer data to mass store Data quality check Submit jobs remotely via Web Execute on farm Analysis LOGICAL FLOW

4. PVSSII for Control PVSS is commercial SCADA product from ETM. Control framework for LHC Joint Controls Project (JCOP). LHCb has adopted PVSSII as prototype control and monitoring system for MC production. Available for Linux and Windows platforms.

5. Monitoring and Control Examples

6. History  Distributed System has been running for 3+ years & processed many millions of events for LHCb design. Main production sites: CERN,Bologna,Liverpool,Lyon,NIKHEF & RAL Globus already used for job submission to RAL and Lyon  System interfaced to GRID and demonstrated at EU-DG Review and NeSc Opening.  For 2002 Data Challenges, adding new institutes: Bristol, Cambridge, Oxford, ScotGrid, Barcelona, Moscow. In 2003, add Germany, Switzerland & Poland.

7. Dubna Moscow RAL Lund Lisboa Santander Madrid Valencia Barcelona Paris Berlin Lyon Grenoble Marseille Brno Prague Torino Milano BO-CNAF PD-LNL Pisa Roma Catania ESRIN CERN HEP sites ESA sites IPSL Estec KNMI (>40) Data Challenges Data Challenges 2002 Physics Data Challenges(PDC) are based on existing MC Production System – small amount of Grid. Computing Data Challenges (CDC) will make more extensive use of Grid. Extra Grid components will be incorporated into PDCs once proven in CDCs.

8. Current Use of Grid Middleware 1. Authentication grid-proxy-init 2. Job submission to DataGrid dg-job-submit 3. Monitoring and control dg-job-status dg-job-cancel dg-job-get-output 4. Data publication and replication globus-url-copy, GDMP 5. Resource scheduling – use of CERN MSS JDL, sandboxes, storage elements

9. Example 1: Job Submission dg-job-submit /home/evh/sicb/sicb/bbincl1600061.jdl -o /home/evh/logsub/ bbincl1600061.jdl: # Executable = "script_prod"; Arguments = "1600061,v235r4dst,v233r2"; StdOutput = "file1600061.output"; StdError = "file1600061.err"; InputSandbox = {"/home/evhtbed/scripts/x509up_u149","/home/evhtbed/sicb/mcsend","/hom e/evhtbed/sicb/fsize","/home/evhtbed/sicb/cdispose.class","/home/evhtb ed/v235r4dst.tar.gz","/home/evhtbed/sicb/sicb/bbincl1600061.sh","/home /evhtbed/script_prod","/home/evhtbed/sicb/sicb1600061.dat","/home/evht bed/sicb/sicb1600062.dat","/home/evhtbed/sicb/sicb1600063.dat","/home/ evhtbed/v233r2.tar.gz"}; OutputSandbox = {"job1600061.txt","D1600063","file1600061.output","file1600061.err","j ob1600062.txt","job1600063.txt"};

10. Job Local disk Compute Element globus-url-copy Replica Catalogue NIKHEF - Amsterdam CERN TESTBED REST-OF-GRID Job Storage Element replica-get publish register-local-file Storage Element mss Data Example 2: Data Publishing & Replication

11. The Future? The Gaudi framework will eventually be used for all LHCb software applications. GANGA will be used to interface to Grid services. New LHCb Data Management System being designed (Marcus Frank et al). Have to consider how the MC Control System interacts with:  Monitoring,configuration & production dbases.  Meta-data of production files.  Output of running jobs.  User Interface, etc.