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Configuration of the online reconstruction stations can be set using:

# lcsim detector name for conditions
online>set lcsim.detector HPS-PhysicsRun2016-Pass2

# run number for conditions
online>set lcsim.run 7798

# lcsim steering resource
online>set lcsim.steering /org/hps/steering/recon/PhysicsRun2016OnlineRecon.lcsim

online>set lcsim.detector HPS-PhysicsRun2016-Pass2

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The argument is the number of stations you want the server to create, which can potentially scale reliably to around the number of cores on your machine.

online>create 8

You will need to test how many stations you can run simultaneously given the specific configuration being used and the number of plots being created/updated.

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Inactive stations can be started using a command like:

online>start

The start command can also take a list of station IDs to start:

online>start 1 2 3 ...

Many of the online recon commands are similar in that they take no arguments (usually meaning all stations or all stations in a certain state) or a space-delimited list of station IDs as in the above example.

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The status of the stations and the ET ring can be checked using:

online>status

Log data can be streamed from each station using its station ID as an argument:

online>log 1

When streaming log data from one of the stations you can hit any key on the keyboard to exit.

Stop all jobs:

online>stop

Stop stations by ID:

online>stop 1 2 3

Remove all inactive stations (active stations need to be stopped first before they are removable).

online>remove

Remove stations by ID:

online>remove 1 2 3

Save some plots to an AIDA file:

online>save myplots.aida

JAS3 can be used to view AIDA plots.

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Save some plots to a ROOT file:

online>save myplots.root

You can use rootbrowse command to look at the plots saved in the ROOT format.

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When you'll all done, shutdown the server using a command like:

online>shutdown 5

This will wait 5 seconds before stopping and destroying all stations and cleanly shutting down the server and its connection to the ET ring.

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Download and build the webapp from github:

git clone https://github.com/JeremyMcCormick/hps-online-recon-webapp
cd hps-online-recon-webapp
mvn clean install war:war -DskipTests

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The default value is:

<context-param>
    <param-name>hps.online.recon.connection</param-name>
    <param-value>//localhost:3001/HPSRecon</param-value>
</context-param>

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TODO: Run a Java main() or Jython script to create AIDA plot pages/regions/styles/etc.

Installing the ET

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Software

If you are running outside Hall B for testing purposes, the ET project is required for creating a local ET ring and using a producer to stream EVIO files onto it. (This is not needed for actual data runs in Hall B.)

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