1 / 15

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.

ponce
Download Presentation

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

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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

More Related