For small data samples, use the dq2-get command. dq2-get are set automatically on atlas16-18 if one uses the setup described on the setup page. Read workbook_introduction how to setup atlas software.

One can also setup the dq2-get client using the CVFMS file system

The DQ2 client is described in this HowTo and this manual with further information here

To setup dq2-get using CVFMS file system, use this script:

setup.sh

#!/bin/bash
export AVERS=17.0.4
export TEST_AREA=$HOME/testarea
export ATLAS_LOCAL_ROOT_BASE=/cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase
source ${ATLAS_LOCAL_ROOT_BASE}/user/atlasLocalSetup.sh
asetup --release=$AVERS --testarea=$TEST_AREA

Put it in a file “setup.sh” and then “source setup.sh”.

Then type:

localSetupDQ2Client
voms-proxy-init -voms atlas -valid 96:00

Say “yes” and type your password.

The most often used dq2 commands are below dq2-xxx –help will show the options:

• dq2-get -copies data from local storage or over the grid
• dq2-ls -lists datasets matching a given pattern
• dq2-put -allows the user to create user-defined datasets
• dq2-ls -P -creates PoolFileCatalog.xml

Before starting using this, type:

voms-proxy-init -voms atlas 

or using the standard (proxy for 3 days):

grid-proxy-init -valid  96:00 

Before start using dq2-get, check the contents of your Grid proxy with the command:

voms-proxy-info -all 

Then check the location of your data:

dq2-ls -r -f user.CCC.0108173.topmix_Egamma.AOD.v2

Then pull the data:

dq2-get -a  -s <Data location> <Data set name to copy>

Note: if looking for containers (a collection of data sets that end with a /) *dq2-ls* will not work. You need to do *dq2-list-datasets-container*.

Do the setup as above then then type:

localSetupPandaClient

The general ATLAS instructions for pathena can be found here.

(thanks to Taylor for checking)

Setup Atlas release. For SL6, source this code:

#!/bin/bash
export AVERS=17.7.0
export TEST_AREA=$HOME/testarea
export ATLAS_LOCAL_ROOT_BASE=/cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase
source ${ATLAS_LOCAL_ROOT_BASE}/user/atlasLocalSetup.sh
asetup --release=$AVERS --cmtconfig=x86_64-slc6-gcc46-opt --testarea=$TEST_AREA
localSetupDQ2Client  --skipConfirm
voms-proxy-init -voms atlas -valid 96:00
localSetupPandaClient --noAthenaCheck

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— Sergei Chekanov 2013/03/18 09:21