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The CNAF Tier1 center XXIV HTASC Meeting Pisa, 12 June 2003 Guido Negri – INFN-CNAF, Bologna

The CNAF Tier1 center XXIV HTASC Meeting Pisa, 12 June 2003 Guido Negri – INFN-CNAF, Bologna. General Informations. CNAF is the INFN National Centre for Research and Development in Telematics and Informatics Technologies.

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The CNAF Tier1 center XXIV HTASC Meeting Pisa, 12 June 2003 Guido Negri – INFN-CNAF, Bologna

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  1. The CNAF Tier1 center XXIV HTASC Meeting Pisa, 12 June 2003 Guido Negri – INFN-CNAF, Bologna Guido Negri – Pisa, 12 June 2003

  2. General Informations • CNAF is the INFN National Centre for Research and Development in Telematics and Informatics Technologies. • Originally was dedicated to the measurements of the Bubble Chambers photos. • Hosted by the Physics Dept. of the University of Bologna. • Personnel: 17 staff + 17 time limited contracts. • Total annual budget around 1.7 M€ + Projects funds Guido Negri – Pisa, 12 June 2003

  3. CNAF Activities • General INFN services • AFS, DNS, WWW, News and Mail… • Video Conference: H320 & H323 MCU • Hosting of training courses (C, C++, ODB…) • Projects • TIER1 Regional Center • GRID: DataGrid, DataTAG, INFN-GRID, EGEE, LCG, Grid.it • High Bandwidth Networks: Optical Networks, WDM, GARR-G Pilot • Testing of new technologies Guido Negri – Pisa, 12 June 2003

  4. TIER1 – General Considerations TIER1 is meant as a computing facility for INFN HNEP community CNAF will be a multi-experiment TIER1 (ATLAS, CMS, LHCb, ALICE, VIRGO and later CDF) Aims • providing experiments with computing resources • support to TIER2s and TIER3s • coordination with TIER0, other TIER1s and TIER2s INFN-TIER1 is only a prototype • TIER1 becomes fully operational: end of 2003 • end of project Phase I: beginning of 2004 Guido Negri – Pisa, 12 June 2003

  5. TIER1 Services Computing servers (CPU farms) Access to on-line data (disks) Mass storage / tapes Broad-band network access and QoS System administration Database administration Experiment specific library software Helpdesk Guido Negri – Pisa, 12 June 2003

  6. Issues Technical staff Recruiting & Training Resource management Minimization of manual operations Sharing of resources (network, CPU, storage, HR) among experiments Resource use optimization Compatibility between tests and production activity Technological tests for Tier-1 Prototype phase (LHC experiments) Production phase (VIRGO, BaBar, CDF II, etc.) Integration with grid framework (EDG, EDT and LCG) Interoperation Common tool development and test Guido Negri – Pisa, 12 June 2003

  7. Computing Resources Computing servers (CPU farms) • 150 (soon ~320) 1U bi-processors Pentium III/IV 800-2400 MHZ (IBM, DELL, SuperMicro) • System installation and administration • Linux RedHat (6.2, 7.2, 7.3) • Experiment specific libraries and software • LCFG, Remote access to KVM. Access to on-line data (DAS, NAS, SAN) • ~35 TB (soon to become >70 TB) • Study of large file system solutions (GFS, GPFS) • SAN on WAN tests (collaboration with CASPUR) • Test of several HW technologies (EIDE, SCSI, FC) Guido Negri – Pisa, 12 June 2003

  8. Network (1) New GARR-B Backbone with 2.5 Gbps F/O lines already in place (soon to pass to 10 Gbps). CNAF-TIER1 access is now 1 Gbps. Gigapop is collocated within INFN-TIER1. Many TIER2s are now 155 Mbps. International Connectivity via Geant: 10 Gbps access in Milano and 3x2.5 Gbps links of Geant with US (Abilene) already in place Guido Negri – Pisa, 12 June 2003

  9. GEANT PD TO MI TIER1 CNAF PI BO RM CT Network (2) GARR-B 10 Gbps 2.5 Gbps 155 Mbps 2.5 Gbps 2.5 Gbps 2.5 Gbps 2.5 Gbps 1 Gbps 2.5 Gbps 2.5 Gbps 155 Mbps Guido Negri – Pisa, 12 June 2003

  10. Bo 12KGP GARR-B SSR2000 R&D Catalyst6500 R&D SSR8600 Gigabit Switch Router 8T F.C. FarmSWG1 Extreme 7i NAS4 NAS3 TIER1 Network Sez. Di Bologna 1Gb/s Matrix M5 Disk-serv-CMS NAS2 Guido Negri – Pisa, 12 June 2003

  11. Storage Mass storage/tapes • StorageTek library with 9840 (30 tapes) and LTO drives (150 tapes, 100 GB each) • CASTOR as front-end software for archiving • Direct access for end-users • Oracle as back-end • New library with 2000-5000 tapes capability in September Disk storage • 8 TB Fibre Channel (DELL) • 2 TB Fibre Channel-EIDE (AXUS) • 2 TB SCSI (Raitec) used as staging for CASTOR • 16 TB NAS based on FC (Procom) • 2 TB NAS IDE Guido Negri – Pisa, 12 June 2003

  12. CASTOR at CNAF STK L180 2 drive 9840 LEGATO NSR (Backup) SCSI LAN Robot access via SCSI ACSLS SCSI CASTOR 4 drive LTO Ultrium 2 TB Staging Disk Guido Negri – Pisa, 12 June 2003

  13. Developed at CNAF – Monitoring by Felice Rosso Farm monitoring tool • series of light scripts (bash, Perl) monitoring the status of a computing farm (CPU Load, disk usage...) • fast: <1 sec for 100 machines • tainted: no shell allowed • no multi-thread (no hacking allowed) • remote monitoring • soon to come more efficient tool (Python) Guido Negri – Pisa, 12 June 2003

  14. Developed at CNAF – Resources Database by Barbara Martelli Aims • Centralized repository for hardware informations • Monitoring • Alarm • Configuration facilities Based on • PostgreSQL • PHP interface • Web interface Managed Data • Batch informations • hardware informations • Technical assistance • Software configuration • Network configuration Guido Negri – Pisa, 12 June 2003

  15. Conclusions INFN TIER1 is offering an experimental service… • VIRGO, CMS, ATLAS, LHCb, ALICE • DataGrid and DataTAG test-beds …but we are still in a test phase • Study and tests of technological solutions Main goals of the prototype are • train people • adopt standard solutions • optimize resource usage • integration with the grid Operational phase forseen starting from end of 2003 Guido Negri – Pisa, 12 June 2003

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