Athena

Outline Setting up the environment Running an Athena job

Setup In order to set all the necessary environment variables add to your.zshrc the following line: source /panfs/ppw1/agrp/atlas/setup/environment/setupEnv.sh To build up the Athena environment you have to: –Set up the CVS. This is automatic in lxplus. On the pc-farm you have to set an authentication procedure (ssh or kerberos) against the atlas-cvs server. This is done by running (only once) the script setupCVS: setupCVS username [rsa] –Setup CMT environment – Create environment variables and requirements file. This is done by running (only once per athena environment) the script setupAthena or setupTutorialAthena. For this tutorial run: setupTutorialAthena work_dir Every login you have to run the athena_dir/cmt/init.sh script. Few important tags that need explanation are in the requirements file: –setup – automaticly source package/cmt/setup.sh for every package you checked out. IMPORTANT – if you intend to use Ganga remove this line from the requirements file. –oneTest – all releases use the same testArea. –simpleTest – each release uses its own testArea by creating version sub-directory –atlasProject – Setting the environment of a certain project (like AtlasProduction) –groupArea – Set an addition path holding compiled versions of certain packages. For example this tutorial uses certain updates that are located in directory: $ATLAS_INST_PATH/athena/groupArea/tutorial_ For further discussion you can look at the Atlas Work Book: Follow the tutorial page for understanding what the script does:

Running Athena Jobs Follow: gularComputingTutorial until the full chain (will be done in three weeks) Optional - making a new package gularComputingTutorial

Hello PBS Run: setupPBSJobTemplate A new (~/pbsJobTemplate.sh) file was created. Its submission is done using qsub Use qstat to see the job in the queue

Hello Grid Run setupGridJobTemplate Two new files were created: –File ~/gridJobTemplate.sh which will be executed on the Grid –File ~/gridJobTemplate.jdl which defines the job’s parameters for the Grid. (jdl=Job Description Language)