Neng XU University of Wisconsin-Madison X D

 This instruction is for beginners to setup and test an Xrootd/PROOF pool quickly.  Following up each step and you should be able to get it work. If not, the main problem may be the Firewall.  There is no explanation of configuration files. To understand more, please check:  If you have further questions, this forum can help you:  The text in those grey boxes are the commands you need to run.

 Xrootd Redirector(PROOF Master) Recommend hardware: Dual Core 2.0GHz, 2GB RAM, 80GB Hard driver.  Data Servers(PROOF Slaves) Recommend hardware: 4xCore 2.4GHz, 8GB RAM, 80GB system hard driver, 500GB data disk or RAID. pcuw101 pcuwsun01pcuwsun02

 Get ROOT binary package on EVERY machine: If you have 32bit SLC4: > su > cd /opt > wget ftp://root.cern.ch/root/root_v Linux.slc4.gcc3.4.tar.gz > tar zxvf root_v Linux.slc4.gcc3.4.tar.gz If you have 64bit SLC4: > su > cd /opt > wget ftp://root.cern.ch/root/root_v Linux.slc4_amd64.gcc3.4.tar.gz > tar root_v Linux.slc4_amd64.gcc3.4.tar.gz  Add user “xrootd” on EVERY machine: > su > /usr/sbin/adduser xrootd > mkdir /var/log/xrootd > chown xrootd /var/log/xrootd pcuw101 pcuwsun01pcuwsun02

 Mount your data disk on Data servers. (In this sample, the data disk (/dev/sdb1) always mount on /xrootd directory.) > su > mkdir /xrootd > chown xrootd /xrootd > mount /dev/sdb1 /xrootd > df /xrootd pcuw101 pcuwsun01pcuwsun02

 They are SAME on ALL the nodes.  The main configure files are: ◦ /etc/xrootd.cf ◦ /etc/proof.conf  The start scripts are: ◦ /etc/init.d/xrootd ◦ /etc/init.d/olbd pcuw101 pcuwsun01pcuwsun02

xrootd.fslib /opt/root/lib/libXrdOfs.so xrd.port 1094 olb.port 3121 if exec olbd xrd.sched mint 10 maxt 100 avlt 20 fi xrootd.export /xrootd/ if pcuw101.cern.ch ofs.redirect remote ofs.forward all else ofs.redirect target fi oss.path /xrootd/ r/w olb.path rw /xrootd/ if pcuw101.cern.ch olb.role manager else olb.role server fi olb.subscribe pcuw101.cern.ch 3121 odc.manager pcuw101.cern.ch 3121 olb.delay startup 30 olb.space 20g 1g if exec xrootd xrd.protocol xproofd:1093 /opt/root/lib/libXrdProofd.so fi xpd.rootsys /opt/root xpd.workdir /xrootd/ xpd.intwait 20 xpd.resource static /etc/proof.conf xpd.role worker xpd.role master if pcuw101.cern.ch xpd.allow pcuw101.cern.ch xpd.poolurl root://pcuw101.cern.ch xpd.namespace /home/xrootd/proofpool pcuw101 pcuwsun01pcuwsun02 Change “pcuw101” to your own Xrootd Redirector’s hostname.

master pcuw101.cern.ch workdir=/xrootd worker pcuwsun01.cern.ch workdir=/xrootd worker pcuwsun02.cern.ch workdir=/xrootd worker pcuwsun01.cern.ch workdir=/xrootd worker pcuwsun02.cern.ch workdir=/xrootd worker pcuwsun01.cern.ch workdir=/xrootd worker pcuwsun02.cern.ch workdir=/xrootd worker pcuwsun01.cern.ch workdir=/xrootd worker pcuwsun02.cern.ch workdir=/xrootd pcuw101 pcuwsun01pcuwsun02 Change “pcuw101” to your own Xrootd Redirector’s hostname. Change “pcuwsun01” and “pcuwsun02” to your own Xrootd data servers’ hostname. > su > cd /etc/init.d > wget > wget > chmod 755 xrootd > chmod 755 olbd

 Go to each machine and do : > su > cd /etc/init.d > xrootd start > olbd start pcuw101 pcuwsun01pcuwsun02

 Follow STEP 2 to install ROOT on your desktop or laptop.  After installation, you can start the test. > source /opt/root/bin/thisroot.sh > xrdcp anyfile.txt root://pcuw101.cern.ch//xrootd/test/anyfile.txt [xrootd] Total MB |====================| % [49.6 MB/s] > xrdcp root://pcuw101.cern.ch//xrootd/test/anyfile.txt anyfile_back.txt [xrootd] Total MB |====================| % [49.6 MB/s] pcuw101 pcuwsun01pcuwsun02 your laptop

 source /opt/root/bin/thisroot.sh  mkdir ~/proof_test  cd ~/proof_test  wget  tar zxvf PROOF_test.tgz  cd PROOF_test  xrdcp proof_test._00001.root root://your_redirector//xrootd/test/proof_test/proof_test._00001.root  xrdcp proof_test._00002.root root://your_redirector//xrootd/test/proof_test/proof_test._00002.root  Modify run.C, change to  Modify makechain.C, change chain->Add("root://pcuw101.cern.ch//xrootd/test/proof_test/"+filename) to chain->Add("root://your_redirector//xrootd/test/proof_test/"+filename)

 Start running the PROOF job :  Then, you should be able to see these windows. > source /opt/root/bin/thisroot.sh > root –l [root].x run.C Starting master: opening connection... Starting master: OK Opening connections to workers: 1 out of 8 (10 %) PROOF set to parallel mode (8 workers)