FAQs¶

1. How can I use CLAS12 software on JLab computers?
   • Maintained builds are accessible with the environment setup documented here.
2. How do I use JLab's batch farm?
   • See JLab's scicomp's documentaion in the left sidebar of scicomp.jlab.org
3. How's our disk space at JLab used and managed?
   • For a breakdown of /work/clas12 usage, see here
   • For the autodeletion queue on /volatile/clas12, see here
   • For the autodeletion queue on /cache/clas12, see here
   • As of 2025, scicomp provides enough of the above information, so just see the links in the left pane at here
   • Note, auto-deletion algorithms operate on file modification times. So, if you generate a new file with an old modification time, it can appear to be auto-deleted prematurely. The most common cause is transferring files while preserving their metadata.
4. How do I get an sqlite file of CCDB/RCDB?
   • Web-accessible snapshots are available at these links: CCDB and RCDB.
   • Also see this CCDB documentation, and this link on to how to use one.
5. How should I transfer data to offsite?
   • Probably Globus. It requires installing some software but is supported by much faster JLab network infrastructure than scp/ftp.
6. How to run an IDE on ifarm?
   • For VSCode, see scicomp's documentation at the bottom of this.
7. Where's those really old software wiki links?
   • Hopefully here.