High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery1 University of Florida High Energy Physics and Grid Projects at U of Florida Dell Visit to University of Florida Dec. 13, 2002

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery2 High Energy Physics  HEP data  Collected in large facilities: Fermilab, Brookhaven, CERN  Record collisions of opposite moving beams  Each collision stored & analyzed independently  100M – 1000M collisions/year collected

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery3 Today: High Energy Physics at Fermilab  CDF experiment  International experiment, 600 physicists, several countries

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery4 Tomorrow: High Energy Physics at LHC “Compact” Muon Solenoid at the LHC (CERN) Smithsonian standard man

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery5 CMS Data Complexity  “Events” resulting from beam-beam collisions:  Signal event is obscured by 20 overlapping uninteresting collisions in same crossing (1 MB per event stored)  CPU time to analyze each event rises dramatically

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery events/sec, selectivity: 1 in CMS Analysis: Higgs Decay to 4 muons

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery Physicists 150 Institutes 32 Countries LHC Computing Challenges  Complexity:Millions of detector channels, complex events  Scale:PetaOps (CPU), Petabytes (Data)  Distribution:Global distribution of people & resources

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery8 Experiment (e.g., CMS) Global LHC Data Grid Online System CERN Computer Center > 20 TIPS USA Korea Russia UK Institute MBytes/s 2.5 Gbits/s Gbits/s 2.5 Gbits/s ~0.6 Gbits/s Tier 0 Tier 1 Tier 3 Tier 4 Tier0/(  Tier1)/(  Tier2) ~ 1:1:1 Tier 2 Physics cache PCs, other portals Institute Tier2 Center Florida

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery9 Florida Tier2 Center (2003) Router GEth/FEth Switch GEth Switch Data Server >1 RAID WAN “Hierarchical” switching topology Switch GEth/FEth Florida in 2003  300 CPUs  >2.5 GHz P4  7 TBytes RAID

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery10 “Trillium”: US Data Grid Projects  GriPhyN  Grid research, toolkits  $12M, 15 institutions  iVDGL  Deploy Global Grid lab  $14M, 17 institutions  PPDG  Data Grid for HEP experiments  $9.5M, 12 institutions  Data intensive experiments  Physicists + computer scientists  Infrastructure development & deployment = Florida leads

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery11 Goal: PetaScale Virtual-Data Grids Virtual Data Tools Request Planning & Scheduling Tools Request Execution & Management Tools Transforms Distributed resources (code, storage, CPUs, networks) è Resource è Management è Services Resource Management Services è Security and è Policy è Services Security and Policy Services è Other Grid è Services Other Grid Services Interactive User Tools Production Team Individual Investigator Workgroups Raw data source ~1 Petaflop ~100 Petabytes

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery12 US-iVDGL Data Grid (Spring 2003) UF Wisconsin Fermilab BNL Indiana Boston U SKC Brownsville Hampton PSU J. Hopkins Caltech Tier1 Tier2 Tier3 FIU FSU Arlington Michigan LBL Oklahoma Argonne Vanderbilt UCSD/SDSC NCSA

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery13 Florida-Led US-CMS Testbed

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery14 CMS Production Simulations Remote Site 2 Master Site Remote Site 1 IMPALA mop_submitter DAGMan Condor-G GridFTP Batch Queue GridFTP Batch Queue GridFTP Remote Site N Batch Queue GridFTP Several productions in 2002 Sites in US & Europe Uncovered many Grid problems 1M events almost complete

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery15 WorldGrid  Joint US - Europe effort  Resources from both sides (15 sites)  Use several visualization tools (Nagios, MapCenter, Ganglia)  Use several monitoring tools (Ganglia, MDS, NetSaint, …)  Applications  CMS:CMKIN, CMSIM  ATLAS:ATLSIM  Submit jobs from US or EU  Jobs can run on any cluster  Demonstrated at IST2002 (Copenhagen)  Demonstrated at SC2002 (Baltimore)  Brochures available describing Grid projects

High Energy Physics and Grids at UF (Dec. 13, 2002)Paul Avery16 Collaborative Possibilities with Dell  Raw computing power for production simulations  100s of CPUs, Terabytes of RAID  High performance I/O  Need to move ~ 5 Gbytes/sec between remote sites  Bottlenecks: network protocols, clusters, components, software,…  Managed clusters  Goal is high efficiency use  Cluster management tools, automatic operation, fewer people, …  Campus Grid operations  Large scale operation permits many interesting “stress” tests of cluster, network and Grid software components  International Grid operations  Tools for monitoring dozens of sites  Automatic operation, fewer people, high throughput, …