Grid Computing Status Report Jeff Templon PDP Group, NIKHEF NIKHEF Scientific Advisory Committee 20...
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Transcript of Grid Computing Status Report Jeff Templon PDP Group, NIKHEF NIKHEF Scientific Advisory Committee 20...
Grid Computing Status Report
Jeff Templon
PDP Group, NIKHEF
NIKHEF Scientific Advisory Committee
20 May 2005
Jeff Templon – NIKHEF SAC, 2005.05.20 - 2
HEP Computing Model
Tier-0 : measurement center (CERN) Dedicated computers (L2/L3 trigger farms) Archival of raw data
Tier-1 : data centers Archival of 2nd copy of raw data Large-scale computing farms (e.g. reprocessing) Spread geographically Strong Support
Tier-2 : user facilities for data analysis / Monte Carlo
Jeff Templon – NIKHEF SAC, 2005.05.20 - 3
Worldwide HEP Computing Needs
2006 2007 2008 2009 2010
ATLAS 1.2E+04 3.6E+04 5.9E+04 1.0E+05LHCb 2.6E+03 5.2E+03 8.6E+03 9.6E+03 1.2E+04ALICE 4.7E+03 9.3E+03 2.3E+04
ATLAS 9.7 27.7 42.8 72.5LHCb 1.0 2.0 3.3 4.0 4.7ALICE 2.0 4.1 10.2
ATLAS 5.2 16.8 29.7 48.4LHCb 1.0 2.1 3.4 7.1 11.6ALICE 2.0 3.9 9.8
world CPU needs (3,6 GHZ Xeon equiv CPU)
world fast storage (disk) needs (petabytes)
world permanent storage (tape) needs (petabytes)
Jeff Templon – NIKHEF SAC, 2005.05.20 - 4
Amsterdam : Tier-1 for LHC
Three experiments : LHCb / ATLAS / ALICE
Overall scale determined by estimating funding in NL
Contribution to experiments scaled by NIKHEF presence:3:2:1
Resulting NIKHEF share of total Tier-1 needs: LHCb: 23%
ATLAS: 11,5%
ALICE: 5,75%
Jeff Templon – NIKHEF SAC, 2005.05.20 - 5
Amsterdam Tier-1 Numbers
2006 2007 2008 2009 2010
CPU 204 1118 2921 5029 8203Disk 0.2 1.1 2.5 3.8 6.1Tape 0.1 0.7 1.8 3.5 5.7
Status: GOOD!Basic collaboration with SARA in place
Attitude adjustment needed (response time)
Appropriate funding line in NCF long-term draft plan
Just enough; concerns about ‘me-too’ (grids are popular)
Community-building (VL-E project)
Pull me-too people into same infrastructure
Jeff Templon – NIKHEF SAC, 2005.05.20 - 6
Overall Status LHC Computing
LCG a successful service 14,000 CPUs and well-ordered operations, active community
Monte Carlo productions working well (next slide)
Data Management a problem Software never converged in EDG
May not be converging in EGEE (same team)
Risk losing HEP community on DM
Makes community-forming (generic middleware) difficult:I’ll just build my own, this one stinks
Jeff Templon – NIKHEF SAC, 2005.05.20 - 7
Results of “Data Challenge ’04”
Monte Carlo tasks distributed to computers across world
Up to 3000 simultaneous “jobs” per experiment
2.2 million CPU-hours (250 years) used in one month
Total data volume > 25 TB
For LHCb: NIKHEF ~ 6% of global total
See it in actionBackup
Jeff Templon – NIKHEF SAC, 2005.05.20 - 8
Transport of primary data to Tier-1s
LCG Service Challenge II
“The Dutch Contribution”
Jeff Templon – NIKHEF SAC, 2005.05.20 - 10
Local Status Positioned well in LCG & EGEE
Present on ‘blessed’ Tier-1 list One of ‘best run’ sites One of first sites (#3 in EDG, compare #4 in WWW) Membership on:
Middleware Design Team (US collaboration here too) Project Technical Forum LCG Grid Applications Group (too bad, almost defunct) Middleware Security Group Etc etc etc
D. Groep chairs world-recognized EUGridPMA
K. Bos chairs LHC Grid Deployment Board
Jeff Templon – NIKHEF SAC, 2005.05.20 - 11
Local Status #2
NIKHEF “grid site” Roughly 300 CPUs / 10 terabytes of storage
Several distinct components LCG / VL-E production LCG pre-production EGEE testing VL-E certification
Manpower: 8 staff, interviews this week for three more (project funding)
Jeff Templon – NIKHEF SAC, 2005.05.20 - 12
PDP Group Activities
Middleware (3 FTE) Mostly “security” -- best bang for buck + local world expert
Operations (3 FTE) How does one operate a terascale / kilocomputer site? Knowledge transfer to SARA (they have support mandate) Contribute regularly to operational middleware
Applications (3 FTE) Strong ties to local HEP (ATLAS “Rome” production, LHCb
Physics Performance Report, D0 “SAMGrid”) Community forming: LOFAR & KNMI, looking for others
Jeff Templon – NIKHEF SAC, 2005.05.20 - 13
Industrial Interest
GANG Hosted @ NIKHEF
IBM, LogicaCMG, Philips, HPC, UvA, SARA, NIKHEF … 16 industrial participants (24 total)