Middleware Software Shown in Demo
1) Request Interpreter - BitMap index
- in: logical request
- ((0.1 < AVpT < 0.2) AND (10 < Np < 20)) or (N > 6000)
- out: a set of logical files
- {star.simul.00.11.16.tracks.156,…, star.simul.00.11.16.tracks.978}
- Size of data to be indexed: 108 objects x 500 attributes x 4 bytes = 200 GB
2) Request Executer
- in: a set of files
- {star.simul.00.11.16.tracks.156,…, star.simul.00.11.16.tracks.978}
- out: selected URLs
- gsiftp://dg0n1.mcs.anl.gov/homes/sim/gsiftp/star.simul.00.11.16.tracks.156
- hrm://dm.lbl.gov:4000/home/dm/srm/data1/star.simul.00.11.16.tracks.978
- Uses Replica Catalog
- Monitors transfer progress