One step installation y’all!!! Who’s excited? Who’s pumped to run data processing of your lifetime without writing a single line of code?
Nobody, of course. These days folks are excited either programming and performing code compilations or watching vicious political campaigns. You know what’s exciting to people who’ve suffered through those things? The joy of focusing on less important problems like processing experimental data and extracting science from it. Right now, with a simple click or two, you can solve one of life’s most boring petty problems: data analysis to understand how things are designed or (if you are an atheist) evolved.
Clara CLAS12 Run-time Environment (CRE)
Installation and data processing instructions are presented for the Clara Java binding.
First set the
CLARA_HOME environmental variable that will point
to the directory where the Clara CLAS12 distribution will be installed
Remember, Clara will create the
$CLARA_HOME directory with a specific file structure.
You need to provide only a location where it should be created.
Also you should specify a work directory where user specific data will be stored,
including data processing application composition and data-set description files,
farm deployment scripts, etc. For that assign
CLARA_USER_DATA environmental variable to
a user specific work directory.
$ setenv CLARA_HOME /UserHome/myClara $ setenv CLARA_USER_DATA /UserHome/work
CLARA_USER_DATA is optional,
in case you are installing your own Clara environment.
In all cases, if you forget to set
it will assume that it is pointing to
This means that if you are using the common Clara installation
you might face permission exceptions at the run-time.
Download the following script:
Change permission of this file to make it executable, and run:
$ ./install-claracre-clas.sh --help usage: install-claracre-clas.sh [ OPTION ]... [ Value ]... -h, --help print this help. -f, --framework Clara framework version (default = 5.0.2). -v, --version Clas12 plugin version (default = 5a.2.0). -g, --grapes Grapes plugin version (default = 1.0). -j, --jre JAVA Runtime version (default = 11).
CLAS12 plugin distributions will be accessed at:
Clara framework distributions are accessed at:
E.g. if you plat to install Clara
clara-cre-4.3.2 distribution and CLAS12
coatjava-5c.6.3 plugin, you should run the installation script with the following options:
$ ./install-claracre-clas.sh -f 4.3.2 -v 5c.6.3 -g 2.0
Information about the framework and the plugin versions, used during the data processing, will be shown and logged:
Distribution : clara-cre-4.3.2 CLAS12 plugin : coatjava-5c.6.3 ========================================== CLARA FE/DPE ========================================== Name = 126.96.36.199%7520_java Session = gurjyan_clara Start time = 2018-09-05 10:53:46 Version = 4.3 Lang = Java Pool size = 10 Proxy Host = 188.8.131.52 Proxy Port = 7520 ==========================================
After receiving Clara or CLAS12 software update notification the only thing you do is simply type:
$ $CLARA_HOME/bin/install-claracre-clas.sh -v <version>
Under the hood
After the successful installation steps you will get a structured directory
pointed by the
CLARA_HOME environment variable
furnished with all necessary jars, scripts, data and configuration files.
$CLARA_HOME/ ├── bin │ ├── clara-orchestrator │ ├── clara-shell │ ├── j_dpe │ └── kill-dpes ├── lib │ ├── jclara-4.3-SNAPSHOT.jar │ ├── jeromq-0.3.5.jar │ ├── jopt-simple-4.9.jar │ ├── json-20160212.jar │ ├── jsr305-3.0.0.jar │ ├── protobuf-java-2.6.1.jar │ ├── snakeyaml-1.16.jar │ └── xmsg-2.3.jar ├── log └── plugins └── clas12 ├── config │ ├── clara_p.jsub │ ├── files.list │ ├── clara_d.jsub │ └── services.yaml ├── etc ├── lib │ ├── jevio-4.4.6.jar │ └── jsap-2.1.jar ├── log └── services
The presented directory tree does not show CLAS12 services jar files
that are stored in
and also support data structures stored in