Tier1A Status
Andrew Sansum
30 January 2003
Overview
•Systems
•Staff
•Projects
Lots of Services
DISK FARM
CPU FARM
CDF
Babar Suns
TESTBEDS
Core Services
AFS
Datastore
Support
Systems
Lots of Operating Systems
•Production Farm
–Redhat 6.2 (Close to end of life)
–Redhat 7.2 (In production/ Babar)
–Redhat 7.3 (close to Trial Service: For LHC)
•CDF Service
–Redhat 7.1 (Kerberised Fermi Distribution)
–Redhat 7.3 (Possible Future release)
•Solaris Service
–Solaris 2.6/Solaris 8
•EDG Testbed(s) - Redhat 6.2 -> Redhat 7.3
Lots of EDG Testbeds!
•Production Testbed (CE, SE, 3*WN+NM)
•Development Testbed (CE, SE, 1*WN)
•RGMA Testbed (CE, SE, WN and RB)
•WP5 SE
•WP3/WP5 development systems
•EDG UI
•CE for REDhat 7.2 service
Lots of Grid Testbeds!
Tier1A
Babar
New Hardware
•Disk
–Expect 40TB
–Continue with existing IDE technology, butdifferent manufacturer.
•CPU
–Expect 100 CPUs
–Move to Pentium 4 or possible AMD
Some New Staff
GridPP Staff: Traylen, Radden, Bly
ESC/PPD System Staff: Wheeler, White, Sansum,
Saunders, Ross, Folkes, Strong
Management: Kelsey, Gordon, Sansum, ...
BITD Support: Networking, Operations, User Reg, AFS
Experiment Support Staff (RAL and elsewhere)
Users
Lots of New Projects
•Basic fabric performance monitoring (ganglia)
•Resource CPU accounting (based on PBSaccounts/mysql)
•New CA in production
•New batch scheduler (MAUI)
•Deploy new helpdesk (end March)
•Network Performance tests (CERN/Bristol -also maybe WP7)
•Get ready for LCG (February deployment?)
Ganglia Monitoring
•Urgently needed live performance andutilisation monitoring
•Scalable solution based on multicast
•Very rapidly deployable - reasonable supporton all Tier1A Hardware
New CA Deployed
•Now fully deployed by E-Science Centre(Jens+Alastair Mills)
•In use in UK core GRID
•Several PP have RA’s defined
•Approved by EDG - not yet indistribution.
•Once in EDG - termination date for oldCA will be set.
New Scheduler (MAUI)
•With Redhat 7.2 now using MAUIScheduler over PBS
•Some problems with MAUI schedulingon wallclock time - now corrected.
•Testing algorithms, but essentially havea range of strategies we can apply.
•Will make changes to queue structure indue course
New Helpdesk Software
•Old helpdesk (Remedy) - mail based,unfriendly.
•With additional staff, urgently need to deploynew solution.
•Expect new system to be based on freesoftware (Bugzilla, Request Tracker …)
•Hope that deployed system will also meetneeds of Testbed and Tier 2 sites.
•Expect deployment by end of March.
Network Performance Tests
•Simon Metson, Nick White, +….
•Preparing for CMS production. Must beable to move data to CERN at 100-200Mbit/second.
•Currently aggregate 350Mbit/s to Bristol- but under 100Mbit/s to CERN.
•Main problem seems to be within CMSinfrastructure
BaBar Batch CPU Use at RAL
MOU
Successes (2002)
•Five additional staff online since January2002.
•Fully engaged in EDG testbed. Making animpact in EDG: Steve
•Tier1A installation went very well inMarch/April/May
•Tier A service ramp up excellent:
–Most successful of the Tier A services. SLACseem pleased - so far.
Challenges
•Complete 2002/2003 tender/deployment
•Carry out major EU tenders for 2003/2004
•Expand use of Tier 1
•Need to evolve strategy to cope with diversityof requirements
•Deploy the LCG Testbed (What/When?)
•Enhance automation / out of hours cover
•Improve reporting to GridPP - accountability