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Outline . What are LCG-2 and gLite? Roles.gLite Architecture reviewWhat is gLite? Provenance of gLite from Alien, Grid3 et al.Schema of gLite Services. The main subsystems of gLite. Comparison to LCG-2. Workload management. Data managementInformation SystemSecurityAccounting AlienCurren
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1. Comparison of LCG-2 and gLite Author E.Slabospitskaya
Location IHEP
2. Outline What are LCG-2 and gLite? Roles.
gLite Architecture review
What is gLite? Provenance of gLite from Alien, Grid3 et al.
Schema of gLite Services. The main subsystems of gLite. Comparison to LCG-2.
Workload management.
Data management
Information System
Security
Accounting
Alien
Current status of gLite
Mapping to physical machines
3. Future EGEE middleware
4. Provenance of gLite
5. gLite and LCG-2 LCG-2focus on production, large-scale data handling
The service for the 2004 data challenges
Provides experience on operating and managing a global grid service
Development programme driven by data challenge experience
Data handling
Strengthening the infrastructure
Operation, VO management
Evolves to LCG-3 as components progressively replaced with new middleware-- target is to minimise the discontinuities of migration to the new generation
Aim for migration plan by end of year
6. gLite Services
7. GAS
8. Job Management
9. WMS
10. AliEn Task Queue and EDG/LCG RB
11. CE
12. Data Management
13. Catalogs File Catalog
Filesystem-like view on logical file names
Keeps track of sites where data is stored
Conflict resolution
14. Storage Element Interfaces SRM interface
Management and control
SRM (with possible evolution)
Posix-like File I/O
File Access
Open, read, write
Not real posix (like rfio)
15. Information System
16. R-GMA
17. Mapping gLite Services onto physical machines
18. gLite Services and components