US ATLAS Tier 3¶
The SCDF hosts the BNL shared Tier-3 analysis facility for US ATLAS users, providing interactive nodes, HTCondor batch, and per-user storage allocations.
Computing and Batch¶
- Computing and Batch Systems — Logging into the computing farm and running HTCondor jobs
- HTCondor Accounting Groups — How users are mapped to the HTCondor groups they submit to
- US ATLAS Analysis Facility documentation — Full user guide for the BNL shared Tier-3 analysis facility (external)
Data Storage¶
US ATLAS shared Tier-3 users have access to the following storage allocations:
| Storage | Allocation |
|---|---|
| Home | 20 GB per user under $HOME |
| Data | 500 GB per user under /atlasgpfs01/usatlas/data/$USERNAME |
| dCache | 5 TB per user under /pnfs/usatlas.bnl.gov/users/$USERNAME (via xrootd) |
| BNL Box | 50 GB under https://bnlbox.sdcc.bnl.gov/ and the NextCloud app |
LOCALGROUPDISK | 15 TB (default) for collaboration outside BNL, on RSE BNL-OSG2_LOCALGROUPDISK |
See also: US ATLAS NFS Service and Storage Services.