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Herbert Greenlee, 01/12/2015 12:28 PM

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h1. Overview
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Larsoft common batch and workflow tools are contained in ups product @larbatch@ (this redmine), which is built and distributed as part of @larsoft@.  Larbatch tools are built on top of Fermilab @jobsub_client@ batch submission tools.  For general information about jobsub_client and the Fermilab batch system, refer to articles on the "jobsub wiki":https://cdcvs.fnal.gov/redmine/projects/jobsub/wiki and the "fife wiki":https://cdcvs.fnal.gov/redmine/projects/fife/wiki/Getting_Started_on_GPCF.
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No other part of larsoft is dependent on @larbatch@, and @larbatch@ is not setup as a dependent of the @larsoft@ umbrella ups product.  Rather, @larbatch@ is intended to be a dependent of experiment-specific ups products (see [[admin_guide|this article]] for instructions on configuring @larbatch@ for a specific experiment.
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After setting up ups product @larbatch@, several executable scripts and python modules are available on the execution path and python path.  Here is a list of the more important ones.
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* "project.py":https://cdcvs.fnal.gov/redmine/projects/larbatch/repository/revisions/develop/entry/scripts/project.py
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An executable python script that is the the main entry point for user interation.  More information can be found below.  
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* "project_utilities.py":https://cdcvs.fnal.gov/redmine/projects/larbatch/repository/revisions/develop/entry/python/project_utilities.py
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A python module, imported by @project.py@, that implements some of the workflow functionality.  End users would not normally interact directly with this module.  However, a significant aspect of @project_utilities.py@ is that is supplies hooks for providing experiment-specific implementations of some functionality, as described in an [[admin_guide#Experiment-specific hooks|accompanying article]] on this wiki.
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* "condor_lar.sh":https://cdcvs.fnal.gov/redmine/projects/larbatch/repository/revisions/develop/entry/scripts/condor_lar.sh
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The main batch script.  @Condor_lar.sh@ is a general purpose script that manages a single invocation of an art framework program (@lar@ executable).  @Condor_lar.sh@ sets up the run-time environment, fetches input data, interacts with sam, and copies output data.  It is not intended that end users will directly invoke @condor_lar.sh@.  However, one can get a general idea of the features and capabilities of @condor_lar.sh@ by viewing the built-in documentation by typing "@condor_lar.sh -h@, or reading the file header. 
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* "condor_start_project.sh":https://cdcvs.fnal.gov/redmine/projects/larbatch/repository/revisions/develop/entry/scripts/condor_start_project.sh
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Batch script for starting a sam project.
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* "condor_stop_project.sh":https://cdcvs.fnal.gov/redmine/projects/larbatch/repository/revisions/develop/entry/scripts/condor_stop_project.sh
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Batch script for stopping a sam project.
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h1. Using @project.py@
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@Project.py@ is used in conjunction with a xml format project definition file.  The concept of a project, as understood by @project.py@, and as defined by the project definition file, is a multistage linear processing chain involving a specified number of batch workers at each stage.
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The general structure of the project file is that it contains global options, a single project block (enclosed in "@<project name=project-name>...</project>@"), and one or more processing stage blocks (enclosed in "@<stage name=stage-name>...</stage>@" inside the project block.  More information about project files can be found [[#Project File Structure|below]].
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In a typical invocation of @project.py@, one specifies the project file (via option @--xml@), tha stage name (via option --stage), and one or more action options.  Here are some use cases for invoking @project.py@.
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* @project.py -h@ or @project.py --help@
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Print built-in help (lists all available command line options).
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* @project.py -xh@ or @project.py --xmlhelp@
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Print built-in xml help (lists all available constructs that can be included in project definition file).
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* @project.py@ --xml xml-name --status
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Print global summary status of the project.
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* @project.py@ --xml xml-name --stage stage-name --submit
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Submit batch jobs for specified stage.
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* @project.py@ --xml xml-name --stage stage-name --check
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Check results from specified stage (identifies failed jobs).  This action assumes that the art program produces an artroot output file.  
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* @project.py@ --xml xml-name --stage stage-name --checkana
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Check results from specified stage (identifies failed jobs).  This version of the check action skips some checks done by @--check@ that only make sense if the art program produces an artroot output file.  Use this action to check results from an analyzer-only art program.
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* @project.py@ --xml xml-name --stage stage-name --makeup
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Submit makeup jobs for failed jobs, as identified by a previous @--check@ or @--checkana@ action.
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* @project.py@ --xml xml-name --stage stage-name --clean
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Delete output for the specified stage and later stages.  This option can be combined with @--submit@.
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* @project.py@ --xml xml-name --stage stage-name --declare
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Declare successful artroot files to sam.
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* @project.py@ --xml xml-name --stage stage-name --upload
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Upload successful artroot files to enstore.
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* @project.py@ --xml xml-name --stage stage-name --define
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Create sam dataset definition.
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* @project.py@ --xml xml-name --stage stage-name --audit
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Check the completeness and correctness of a processing stage using sam parentage information.  For this action to work, input and output files must be must be declared to sam.
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h1. Project File Structure
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To be filled.  
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For now, see "example project files in ubutil":https://cdcvs.fnal.gov/redmine/projects/ubutil/repository/revisions/master/show/xml/mcc5.0
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Also refer to header of "project.py":https://cdcvs.fnal.gov/redmine/projects/larbatch/repository/revisions/develop/entry/scripts/project.py