Sergey A. Uzunyan

Introduction to the ATLAS T3 environment at NICADD

Requirements

• globus credentials, NICADD and lxplus computer accounts
• project directories should be created in the /xdata/$USER/ area, default is /xdata/user/athena
  (the "/xdata" and the "/bdata" disk are shared between all desktops and cluster nodes)
• use condor_status to check the CONDOR batch system status.

The first session

Login to the t3int0.nicadd.niu.edu (known as t3int0 for the NICADD desktops and pt3int0 for the cluster nodes).

   [user@pt3int0 ~]$ copy globus credentials in ~/.globus
   [user@pt3int0 ~]$ mkdir -p /xdata/$USER/athena
   [user@pt3int0 ~]$ ln -s /xdata/$USER/athena

   [user@pt3int0 ~]$ export ATLAS_LOCAL_ROOT_BASE='/cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase'
   [user@pt3int0 ~]$ alias setupATLAS='source ${ATLAS_LOCAL_ROOT_BASE}/user/atlasLocalSetup.sh'

Note:: Add the last two lines in ~/.bashrc.

    [user@pt3int0 ~] setupATLAS
        ...Type localSetupDQ2Client to use DQ2 Client
        ...Type localSetupGanga to use Ganga
        ...Type localSetupGcc to use alternate gcc
        ...Type localSetupGLite to use GLite
        ...Type localSetupPacman to use Pacman
        ...Type localSetupPandaClient to use Panda Client
        ...Type localSetupROOT to setup (standalone) ROOT
        ...Type localSetupWlcgClientLite to use wlcg-client-lite
        ...Type saveSnapshot [--help] to save your settings
        ...Type showVersions to show versions of installed software
        ...Type createRequirements [--help] to create requirements/setup files
        ...Type setupDBRelease to use an alternate DBRelease
        ...Type diagnostics for diagnostic tools
        *******************************************************************************
        Grid middleware note:
        gLite wlcg-client-lite are available on this machine.
        Current value is gLite
        The default value is set by the environment variable ALRB_useGridSW
        possible values for ALRB_useGridSW: gLite wlcg-client-lite
        *******************************************************************************
         [user@pt3int0 ~]$ showVersions --show=dbrelease
         [user@pt3int0 ~]$ showVersions --show=athena

Note:: the above commands can take up to 20 min if dbrelease/athena catalogs were not yet cashed in the cvmfs

Setup the ATHENA project area

Create test area (/xdata/user/athena) and choose release (17.8.0)

        [user@pt3int0 ~]$ setupATLAS
        [user@pt3int0 ~]$ mkdir /xdata/$user/athena
        [user@pt3int0 ~]$ ln -s   /xdata/$user/athena ~/athena
        [user@pt3int0 ~]$ mkdi r ~/athena/AtlasOffline-17.8.0
        [user@pt3int0 ~]$ asetup 17.8.0,slc6

Note:: Please also consult with the most recent ATLAS tutorials (like "hello world" for the first Athena program" )

Next

DQ2 tutorial