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Grid Applications for High Energy Grid Applications for High Energy Physics and InteroperabilityPhysics and Interoperability
Dominique Boutigny CC-IN2P3
June 24, 2006
Centre de Calcul de l’IN2P3 et du Centre de Calcul de l’IN2P3 et du DAPNIADAPNIA
CERN
Lab a
Lab c
Lab c
Univ. n
Lab m
Lab b
Univ. bUniv. y
Univ. x
Allemagne
Tier1 1
USA
FermiLab
UK
France
Italy
Hollande
USA
Brookhaven
Japon
Lab d
France
Lab e
France
ASCC/Taipei
RAL/UK
CCIN2P3/FR
TRIUMF/CA
GridKa/DE
CNAF/IT
PIC/SP
BNL/US
Tier-0Tier-0
Tier-1Tier-1
USC KrakowCIEMAT
Rome
Taipei
Canada
CSCS
UB
IFCA
IC
MSU
IN2P3-LPC
Cambridge
IFIC
Tier-2Tier-2
Tier-3Tier-3
Desktop/Desktop/portablesportables
GRIF
IN2P3-Subatech
SARA/NL
LAPP
CPPM
Labo X
LHC Experiments 15 PByte of data / year
A computing Grid architecture at the world level is mandatory to process them
W-LCG Grid infrastructure
FrameworkFramework
• Grid activities at IN2P3 are mainly related to LHC computing
• Deeply involved in the EGEE project
– Grid Operation ~10 engineers involved at CC-IN2P3
– Network
• The main goal is to setup a Tier-1 node at CC-IN2P3 for the worldwide grid W-LCG for physics oriented production
– LHC will be starting in 2007, the Grid infrastructure should be up and running by that time.
– Experiencing the Grid through Service and Data challenges
• Ramping up, step by step, the data throughput and the number of jobs up to the LHC nominal value
Network monitoring – Ouput from CERN
1.6 GB/s
Network monitoring – Input to CC-IN2P3
250 MB/s
Optical network connection to CERN : 10 Gbps
• W-LCG = EGEE (gLite) + OSG (+ Nordic)– Need to interoperate both Grids
• At the job level – Some level of interoperability has been reached for LCG 2 /
OSG interoperability– Still some work to do, especially for gLite / OSG
interoperation.– Not clear how interoperation is working at the level of the data
catalog
• At the Operation level– Work is just starting– Crucial in the context of LHC computing
IT / CC-IN2P3 relationshipsIT / CC-IN2P3 relationships
• ANR: 3 year project: CC-IN2P3 – LIP (RESO) – RENATER + FNAL (Chicago)– 2-fold:
• OSG / EGEE interoperability (CC-IN2P3)• High bandwidth network transfers (LIP)
– Understand data transfer patterns on a long distance network and with data from real applications
– Optimize data transfers
– Will get a 2×1 Gbps dedicated link between Chicago and CC-IN2P3 (RENATER)
– Hope to have it upgraded up to 10 Gbps before the end of the project
– Project started since 3-4 month – Quite some infrastructure to setup before actual work could begin
• CC-IN2P3 and W-LCG grid– Large infrastructure with operational support– Provide real applications involving a huge amount of data
• Computer Science:– Develop Grid software from a more fundamental point of
view• Are able to handle workflow, bottlenecks, data access,
networks etc… without the pressure of HEP data to analyze
• I am convinced that both world could benefit from each other and that next generation of HEP operational Grids will come from the IT world.
France / Japan relationshipFrance / Japan relationship
• 2 computing projects within the Associated International Laboratory (AIL)
– 1 focused on LHC Computing
– 1 focused on interoperability between NAREGI and EGEE
• Large overlap with NEGST
• Close relationship between Tokyo University and CC-IN2P3 related to ATLAS experiment.
– Wish to connect the Tokyo Tier-2 (ICEPP) to CC-IN2P3 Tier-1
• Data exchange between both sites
• Strong interest to develop relationships in view of the future International Linear Colider project where France and Japan have common interest
SRBSRB
• The Storage Resource Broker and its successor: RODS is also a subject of common interest (developed at SDSC)
• SRB is a distributed file catalog with a sophisticated Metadata management system.– Data distribution / replication is very efficient (heavily used in the
BaBar experiment between Stanford and Lyon)
• SRB is not part of EGEE / OSG– KEK Japanese colleagues are working on SRB / EGEE interoperation– CC-IN2P3 is very interested to join this effort
• Recent interoperability test between several SRB server federations located in Japan, New-Zealand, USA, France, Italy, UK, Australia.– Performances were very good and worldwide SRB configuration was
especially easy to setup