Beam Test Pipeline

Beam Test Pipeline Overview

The pipeline automatically retrieves all online data produced by LATTE which are currently stored in directories associated with runs numbers and brings them to the SLAC farm. After that, it populates an ORACLE database which provide queries to the data. The pipeline also creates reports, and launches data processing/reconstruction code to produce data files and high level analysis ntuples.

A pipeline diagram can be seen below

Note that this diagram is not current, the recon task is more complex now.  Rectangles represent TPs, the first one in a task is shaded.  Ellipses represent files, while hexagons represent symbolic links.

The xml files used for upload are located in /afs/slac/g/glast/ground/PipelineConfig/BeamTest-tasks/beamtestPipeline/current
They are generated by running scripts when installing the code. 

Need an explanation of how the tasks get launched by FastCopy

Some existing documentation can be found in /afs/slac/g/glast/ground/PipelineConfig/BeamTest-tasks/beamtestPipeline/current/doc.
install.txt and operation.txt may both be read directly.  Running make in the doc directory will use IAndTPipeline.tex and several .dot files to make a .pdf.

Policy for updating tasks

Describes policy and steps for updating

Environmental Variables

Setting up the environment so that one can acess the ORACLE database

Source  /u/gl/glast/pdb_config/dpf_config_prod.csh (or .sh if you use BASH) to run the pipeline text-mode management tools, which are installed in $PDB_HOME (which is set by the config script).

Pipeline Tasks and Associated Scripts

Each pipeline tasks consists of several shell, python and perl scripts.

Most steps within a task (Task Processes (TPs)) consist of a wrapper, which interfaces with the pipeline infrastructure (GINO) and a script which does the work, usually by running some external app.

The code for the bt pipeline is found in /afs/slac/g/glast/ground/PipelineConfig/BeamTest-tasks/beamtestPipeline/current

The cvs repository for the code is here. It contains a branch with the following features:

• based on SVAC pipeline

• minimal changes necessary to make it work

The list of pipeline taks is provided below with the information how to run them.

Task Name: eLogupdate

Description: loads the database