Analysis Getting Started

How to Reach the SBS Work Directory

• https://scicomp.jlab.org/docs/getting_started
  • From any terminal ssh username@login.jlab.org
  • ssh ifarm

• The SBS work directory is located at /work/halla/sbs
  • Created a directory here with mkdir username
  • If you do not have permission contact Ole Hansen (ole@jlab.org) and ask to be added to the SBS user group.

Setting up Environments

• Open ~/.cshrc and add the lines:

source /site/12gev_phys/softenv.csh 2.5
source /work/halla/sbs/ANALYZER/install/bin/setup.csh 

• This will set up the proper environments for using the analyzer
• If you want to set up your own personal analyzer you can look here https://github.com/JeffersonLab/analyzer

Setting up the SBS Replay

• If you do not plan to make changes to the replay code you can simply use the version located at /work/halla/sbs/SBS_OFFLINE and /work/halla/sbs/SBS_REPLAY
• The SBS analysis is located at https://github.com/JeffersonLab/SBS-offline and https://github.com/JeffersonLab/SBS-replay
  • You can copy the github versions to your own work directory, if you plan to test changes to the analysis

SBS Installation

• test

Getting Files from Cache

• All raw EVIO files from GMn are on tape at /mss/halla/sbs/raw
• Cached EVIO files are located at /cache/halla/sbs/raw
• To write files from tape to cache see documentation here, https://scicomp.jlab.org/docs/node/586
  • For example, to get all EVIO splits from run runnumber to cache execute jcache get /mss/halla/sbs/raw/*runnumber*

Storing Output Files

• No output files (logs or ROOT) should be stored in the work directory
• They should be stored in the "volatile" directory
  • Go to /volatile/halla/sbs
  • Created a directory here with mkdir username