Request Manager
Request Manager: developed at LBNL
- accepts a request to cache a set of logical file names
- checks replica locations for each file
- gets NWS bandwidth/latency for each replica location
- selects “lowest” cost location
- initiates transfer using GSI-FTP
- monitors file transfer progress, responds to status command
Client: PCMDI software (LLNL)
- it has its own “metadata” catalog
- lookup in the catalog generates a set of files that are needed to satisfy a user’s request