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Application examples

Application examples. Oxana Smirnova (Lund, EPF) 3 rd NorduGrid Workshop, May23, 2002. NorduGrid & applications. The level of the NorduGrid stability allows to execute real tasks Most of the applications so far are in the high energy physics domain

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Application examples

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  1. Application examples Oxana Smirnova (Lund, EPF)3rdNorduGridWorkshop, May23,2002

  2. NorduGrid & applications • The level of the NorduGrid stability allows to execute real tasks • Most of the applications so far are in the high energy physics domain • Apart of the simple curiosity and testing, there is a bare necessity to run ATLAS Data Challenge exercises • Requires a lot of computing power • Intensions are to run it in a distributed (Grid) manner a.s.a.p. Oxana Smirnova

  3. Pre-requisites • Valid NorduGrid credentials • A machine with the User Interface installed • Includes minimal Globus client installation • A user may want to make some personal adjustments: • .ngrc # Sample .ngrc file# Comments starts with #NGDEBUG=1NGDOWNLOAD=/tmp • .ngiislistldap://grid.nbi.dk:2135/O=Grid/Mds-Vo-name=NorduGridldap://grid.quark.lu.se:2135/O=Grid/Mds-Vo-name=NorduGrid Oxana Smirnova

  4. (* user-specified job name *) (jobName=Bsubc) (* standard output file *) (stdout="myoutput.dat") (* flag whether to merge stdout and stderr *) (join="yes") (* request e-mail notification on status change *) (notify="e chafik@quark.lu.se") & (* an executable *) (executable=bc_run) (* files to be staged in before the execution *) (inputFiles= (run.dat "") ) (* files to be staged out after the execution *) (outputFiles= (bc.hbook "") ) Double heavy hadron production xRSL specifications: Oxana Smirnova

  5. Double heavy hadron production ngsub –f bsubc.xrsl Oxana Smirnova

  6. Re-used JETSET/PYTHIA generation • Problem: • A legacy code (FORTRAN) uses specific input cards • Each job needs a new random seed • “Gridification” is still trivial: • Generate xRSL files on-fly • Submit for execution a shell-script, wrapped around the actual executable Oxana Smirnova

  7. #!/bin/sh # Submits several run.sh jobs with different random seed if [ $# -eq 0 ]; then echo "" echo Usage: $0 njobs nevents echo "" exit 127 fi MAXCOUNT=$1 MAXEVT=$2 echo "Submitting $MAXCOUNT jobs, $MAXEVT events each..." FLOOR=10000 count=1 while [ "$count" -le $MAXCOUNT ] do number=0 while [ "$number" -le $FLOOR ] do number=$RANDOM done let "inseed = $number*100" jname="flong"$count outname=$jname".out" echo "Job" $jname "started with random seed" $inseed let "count += 1" cat << EOXRSL > ffun.xrsl & (executable=run.sh) (arguments=$inseed $MAXEVT) (executables=ffungen) (inputFiles=(ffungen "")) (outputFiles=(ffun.hbook "")) (jobName=$jname) (stdout=$outname) (join=yes) (maxCpuTime=100) (ftpThreads=6) (middleware="NorduGrid-0.1.6") EOXRSL ngsub -f ffun.xrsl sleep 10 done Re-used JETSET/PYTHIA generation Job submission script ffun.sh Oxana Smirnova

  8. #!/bin/sh cat << EOF > ffun.inp $2 2 0 8 0.04 6 2 0 1 $1 EOF time ./ffungen Re-used JETSET/PYTHIA generation Executable run.sh Job submission: ffun.sh 40 50000 Oxana Smirnova

  9. Re-used JETSET/PYTHIA generation Oxana Smirnova

  10. ATLAS DC1 • Problem: • Executed binary, libraries etc do not belong to a user, but are a part of the ATLAS runtime environment • Input files are residing on [remote] storages • However, as soon as the runtime environment is set up, the task becomes even easier on the Grid, comparing to a traditional method (see the Demo later) • Again, the most convenient method may be to produce xRSL and steering files on-fly Oxana Smirnova

  11. ATLAS DC1 xRSL example &(executable=“\/$ATLAS_ROOT/bin/atlsim") (arguments="-w 0 -b dc1.000016.simu.0000.nordugrid.kumac partition=0001 nskip=0 ntrig=2") (stdout=out.txt)(stderr=err.txt) (outputFiles= ("out.txt" "")("err.txt" "") ("dc1.000016.simu.0001.nordugrid.zebra" "")("dc1.000016.simu.0001.nordugrid.his" "")) (inputFiles= ("atlsim.makefile" "http://www.nbi.dk/~waananen/atlas/atlsim.makefile") ("atlas.kumac" "http://www.nbi.dk/~waananen/atlas/atlas.kumac") ("atlsim.logon.kumac" "http://www.nbi.dk/~waananen/atlas/atlsim.login.kumac") (" dc1.000016.simu.0000.nordugrid.kumac " " dc1.000016.simu.0000.nordugrid.kumac ") ("gen0016_1.root" "rc://@grid.uio.no:389/lc=ATLAS,rc=NorduGrid,dc=nordugrid,dc=org/gen0016_1.root") ) (runTimeEnvironment="ATLAS-3.0.1") (jobname="dc1.000016.simu.0001.nordugrid") (notify="waananen@nbi.dk") Oxana Smirnova

  12. ATLAS DC1 Oxana Smirnova

  13. Summary • NorduGrid is ready to run “traditional” applications in a Grid environment • There is still plenty of room for development: e.g., data management, production job management etc Oxana Smirnova

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