LHCb Software At Nikhef: Prepare for Workshop 22-24 June 2009

Your first time to run over a MicroDST at Nikhef

Prepare ssh on your Nikhef account

Follow these instructions: Configuring SSH access from Linux/Unix

Get software packages

mkdir cmtuser
cd cmtuser
source /project/bfys/lhcb/sw/setup.sh   # for sh, bash, ksh, zsh
source /project/bfys/lhcb/sw/setup.csh  # for csh, tcsh
SetupProject --build-env DaVinci v23r0p1
mkdir Phys
cd Phys 
cp -r --no-dereference $DAVINCIROOT . 

getpack Ex/MicroDSTExample v2r3
cd ~/cmtuser/DaVinci_v23r0p1/Phys/DaVinci/cmt/
cmt br cmt make

(NB: zsh-users should add 'setopt SH_WORD_SPLIT' to their .zshrc )

Loop over events

SetupProject DaVinci v23r0p1
cd ~/cmtuser/DaVinci_v23r0p1/Ex/MicroDSTExample/python
python -i SomeTestFileToBeDefinedByJuan.py --input /data/bfys/h71/Workshop/SeqDC06selBs2JpsiPhiWithMC_50.0_Kevt_NoPVReFit.dst

Plot

>>> massPlots.plots[443].Draw()
>>> massPlots.plots[531].Draw()
>>> massResPlots.plots[531].Draw()
>>> propTimePlots.plots[531].Draw()

Introduction to Python

Tutorial

Install a Virtual Machine on laptop (windows): CernVM

See talk by Pere Mato, slide 14: 17 March 2009

CernVM beginner's guide: CernVM beginner's guide

1a) Download VMware player under Windows

Download vmware player here

Unzip and put CernVM in fixed place. For example C:\Program Files\CernVM
Start vmplayer from desktop
Open CernVM from C:\Program Files\CernVM
Open in browser: http://192.168.204.128:8004/
                 (your number might be different!)
Create account. For example: use lxplus username and password
Virtual organization: lhcb
Change memory allocation in vmware player
  -> troubleshoot
     -> change memory allocation
         -> 1024 GB

1b) Download VMware player under MAC

1c) Download VMware player under Linux

2) Start CernVM

Follow CernVM beginner's guide step by step: CernVM beginner's guide

3) Start Exceed + SSH

Start exceed
start ssh
connect to vm with ssh to 192.168.204.128
     (Your number might be different!)
     (fink tunnel x11 connections in ssh!)

4) Configure CernVM

(once for configuring cernvm:)
back to instructions afs
sudo conary update openafs=1.4.8-1-1
sudo conary update openafs-client=1.4.8-1-1
sudo conary update openafs-kernel=1.4.8-1-1
sudo /etc/init.d/afs start

5) CernVM session on ssh

Never do: ls /opt/ !! (It could start caching all atlas software...)

kinit user@CERN.CH (capitals!)
cd /opt/lhcb
source /opt/lhcb/LbLogin.cshhcb/lhcb/GAUDI/GAUDI_v21r0
python $GAUDIEXAMPLESROOT/python/HistoEx.py
SetupProject Bender v12r0
cd $BENDEREXAMPLEROOT/python/BenderExample/
./Phi.py

''' 6) Create shared data folder on your laptop '''

<pre>
Make folder C:\Data
Change properties of C:\Data
   -> sharing
     -> network sharing without wizard
       V share
          name: Data
       V allow 

Edit configuration file (in C:\Program Files\CernVM )

 sharedFolder.maxNum = "1"

 sharedFolder0.present = "TRUE"
 sharedFolder0.enabled = "TRUE" 
 sharedFolder0.readAccess = "TRUE"
 sharedFolder0.writeAccess = "TRUE"
 sharedFolder0.hostPath = "C:\Data"
 sharedFolder0.guestName = "data"
 sharedFolder0.expiration = "session"

 usb.autoConnect.device1 = ""

In VMware:
  -> Share folders
     -> o always enabled

sudo ln -s /usr/sbin/mount.vmhgfs /sbin

I edited Phi.py and put input data location: /mnt/hgfs/data/Bs2DsK_1.dst )
Data can be found here:
/afs/cern.ch/lhcb/group/calo/ecal/vol10/DATA

Once everything is installed... Start CernVM

Don't select 'Open', but 'Recent'.

source /opt/lhcb/LbLogin.csh
SetupProject Bender v12r0
./Phi.py