1. Neng XU University of Wisconsin-Madison X D

2.  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: http://root.cern.ch/twiki/bin/view/ROOT/ProofInstallation http://root.cern.ch/twiki/bin/view/ROOT/ProofInstallation  If you have further questions, this forum can help you: http://root.cern.ch/phpBB2/http://root.cern.ch/phpBB2/  The text in those grey boxes are the commands you need to run.

3.  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

4.  Get ROOT binary package on EVERY machine: If you have 32bit SLC4: > su > cd /opt > wget ftp://root.cern.ch/root/root_v5.18.00.Linux.slc4.gcc3.4.tar.gz > tar zxvf root_v5.18.00.Linux.slc4.gcc3.4.tar.gz If you have 64bit SLC4: > su > cd /opt > wget ftp://root.cern.ch/root/root_v5.18.00.Linux.slc4_amd64.gcc3.4.tar.gz > tar root_v5.18.00.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

5.  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

6.  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

7. 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.

8. 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 http://wisconsin.cern.ch/~nengxu/xrootd_install/xrootd > wget http://wisconsin.cern.ch/~nengxu/xrootd_install/olbd > chmod 755 xrootd > chmod 755 olbd

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

10.  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 36.03 MB |====================| 100.00 % [49.6 MB/s] > xrdcp root://pcuw101.cern.ch//xrootd/test/anyfile.txt anyfile_back.txt [xrootd] Total 36.03 MB |====================| 100.00 % [49.6 MB/s] pcuw101 pcuwsun01pcuwsun02 your laptop

11.  source /opt/root/bin/thisroot.sh  mkdir ~/proof_test  cd ~/proof_test  wget http://wisconsin.cern.ch/~nengxu/xrootd_install/PROOF_test.tgzhttp://wisconsin.cern.ch/~nengxu/xrootd_install/PROOF_test.tgz  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 TProof::Open("nengxu@pcuw101.cern.ch") to TProof::Open(“yourname@your_redirector")  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)

12.  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)