Grid-enabled Data Analysis: CMS/Caltech SC2001 Demo
Demonstration of the use of Virtual Data technology for interactive CMS physics analysis at Supercomputing 2001, Denver
- Interactive subsetting and analysis of 144,000 CMS QCD events (105 GB)
- Tier 4 workstation (Denver) gets data from two tier 2 servers (Caltech and UC San Diego)
Prototype tool showing feasibility of these CMS computing model concepts:
- Navigates from tag data to full event data
- Transparently accesses `virtual' objects through Grid-API (Globus GSI FTP, GDMP)
- Reconstructs On-Demand (=Virtual Data materialisation)
- Integrates Grid Technology with ODMS
Peak throughput achieved: 29.1 Mbyte/s; 78% efficiency on 3 Fast Ethernet Ports