Nick Brook Current status Future Collaboration Plans Future UK plans

5th November 2001GridPP Collab Meeting 2 Needs & Requirements Extrapolated hardware profile for large scale MC production in UK End 2001Jan 2003 CPU(SI95) Disk (Tb) Robotic Tape (Tb)

5th November 2001GridPP Collab Meeting 3 Current Status UK major external Monte Carlo production centre (RAL & MAP)  UK major i/p to formulation of LHCb Grid plans Frank Harris (Oxford)75% (WP8 & external computing coordination) Nick Brook (Bristol)50%(UK coordination & analysis model) Glenn Patrick (RAL)30%(analysis model & testbed) Girish Patel (Liverpool)20%(MAP+testbed) Ulrik Egede (IC)10%(analysis model) Artur Barczyk (Edinburgh)20%(analysis model) Akram Khan (Edinburgh)20%(testbed+WP2, analysis framework) Ian McArthur(Oxford)20%(metadata management) A N Other (Oxford)100%(Gaudi/Grid- WP8) Chris Jones (Cambridge)10%(analysis model)

5th November 2001GridPP Collab Meeting 4 Monte Carlo Production CentreOS Max (ave) nos. of CPUs used simultaneously Typical weekly produced (nos. of k evts) Percentage submitted through Grid CERNLinux315(60)8510 RALLinux50(30)35100 IN2P3Linux225(60)35100 LiverpoolLinux300(250)1500 BolognaLinux20(20)350 Hope to include ScotGrid & Bristol soon

5th November 2001GridPP Collab Meeting 5 Monte Carlo Production Execute on farm Submit via Web Performance monitoring via web Update database at CERN Transfer to mass storage at CERN Data quality checking

5th November 2001GridPP Collab Meeting 6 Monte Carlo Production Execute on farm Submit via Web Performance monitoring via web Update database at CERN Transfer to mass storage at CERN, RAL, … Data quality checking WP1 submission tools WP4 environment WP1 submission tools WP3 monitoring tools WP2 metadata tools WP1 tools WP2 data replication WP5 API for mass storage Online histos production using Grid pipes

5th November 2001GridPP Collab Meeting 7 MC Production Requirements Production site aware scripts Installation kits System should be resistant crashes of: –any share filesystem used –book-keeping database system –mass storage system –file transfer technology –job submission system –LHCb executables! Scalability i.e. easy to add new MC production site Allow replication of remote datasets Monitoring and control of the LHCb MC system Interface to GANGA

5th November 2001GridPP Collab Meeting 8 Installation Kit Requirements Production Installation Kit –Installs self-contained run time environment given version of executable “call” external dynamic libraries in a “path independent” way appropriate detector database script to check installation –Original format compatible with EDG WP4 i.e. RPM’s –Production on Windows platform?? Developers Installation Kit –Installs self-contained developers environment Source code Appropriate detector database CMT, CVS, C++ installation if needed –Supports Windows Interface to GANGA

5th November 2001GridPP Collab Meeting 9 What is Gaudi? Converter Algorithm Event Data Service Persistency Service Data Files Algorithm Transient Event Store Detec. Data Service Persistency Service Data Files Transient Detector Store Message Service JobOptions Service Particle Prop. Service Other Services Histogram Service Persistency Service Data Files Transient Histogram Store Application Manager Converter Event Selector

5th November 2001GridPP Collab Meeting 10 Gaudi & The Grid World Converter Algorithm Event Data Service Persistency Service Algorithm Detec. Data Service Persistency Service Message Service JobOptions Service Particle Prop. Service Other Services Histogram Service Persistency Service Application Manager Converter Event Selector Analysis Program OS Mass Storage Event Database PDG Database DataSet DB Other Monitoring Service Histo Presenter Other Job Service Config. Service Transient Detector Store Transient Histogram Store Transient Event Store

5th November 2001GridPP Collab Meeting 11 GANGA: Grid And Gaudi Alliance GAUDI Program GANGA GUI JobOptions Algorithms Collective & Resource Grid Services Histograms Monitoring Results

5th November 2001GridPP Collab Meeting 12 GANGA Requirements Prior to job submission –configuration of Gaudi program e.g. algorithm selection, event data i/p, requested o/p,… –Grid services estimations of resource req t e.g. CPU, storage, … –user job req ts e.g. s/w needed –submitting job (or parallel sub-jobs) During execution –monitor progress – displaying of messages, histograms,… After execution –termination status and validation –e.g. MC production – o/p files on mass storage & updating of book-keeping database –e.g. analysis - return o/p to user

5th November 2001GridPP Collab Meeting 13 ATLAS & LHCb are using the same s/w framework – Athena /Gaudi Large part of proposed work has overlap e.g. GANGA grid interfaces Proposed programme has been discussed not only betweeh the 2 UK collaborations BUT also at CERN ATLAS & LHCb

5th November 2001GridPP Collab Meeting 14 Summary Proposing a challenging programme Programme developed in conjunction with central collaboration Programme developed in conjunction with ATALS as a whole & in the UK Requesting for a minimum of 8 staff years of effort (some will be common with ATLAS) UK already playing a leading role in the LHCb Grid activities UK already leading centre(s) in producing Monte Carlo for LHCb