LCD Computing Setup

1
LCD Computing Setup
Server Specs and Setup Desktop Cluster
Organization Physics Software Distribution Plans
and Schemes
Jeremy McCormick, Sergey Uzunyan, Guilherme Lima,
et al
2
Server Hardware Specs

• Dual-CPU Athlon 2.133 GHz
• 2 Gb RAM
• HD 1 master disk, 1 secondary, 4 RAID
• 1 TB total storage

3
Server Configuration

• Red Hat 9
• kernel 2.4.20-13.9smp
• hostname k2
• IP 131.156.85.141
• accessible via SSH

4
Server Filesystem
5
Conceptual Diagram
6
NFS Structure
 
   
7
Physics Software Distribution
 

• simulation, analysis event generation
• shared binaries, libraries, scripts, includes,
  etc.
• usable from any node in desktop cluster
• common environment setup scripts
• /k2work/USERNAME application builds possible
• /k2dist isolates physics apps from Linux fs

   
8
/k2dist directory structure
 
   
9
/k2dist/apps
 
Analysis jas, root Event Generation pandora-pythia
, peg Libraries aida, boost, cernlib, clhep,
freehep, g4phys, geant4, lcio, Mesa, pegs4,
xml4c Simulation lcdg4, mokka, tbeam Utilities dav
id, dawn
   
10
Useful /k2dist/bin Scripts
 

• prjenv.sh
• project env
• add . /k2dist/prjenv.sh to /.bash_profile or
  /.cshrc
• appenv.sh
• application env
• setup java vars, PATH, LD_LIBRARY_PATH, etc.
• included by prjenv.sh
• g4_5_2_p01env.sh
• Geant4 env vars
• included by prjenv.sh
• nodes.sh
• print node names, IPs, host
• ex. for n in nodes.sh hn do
• ping n
• done

   
11
Simple Remote Job
 
test_job.sh set project environment .
/k2dist/bin/prjenv.sh run job nohup testbeam -m
/k2work/jeremy/run10.mac -o /k2data/jeremy/tb-test
.txt gt /k2work/jeremy/tb-test.log start job
on node dvk jeremy_at_lepton-physics jeremy ssh
rio /k2work/jeremy/test_job.sh get
pid jeremy_at_lepton-physics jeremy ssh rio pgrep
testbeam 22742 kill the job jeremy_at_lepton-physic
s jeremy ssh rio kill 22742
   
12
k2 Desktop Cluster
 

• new user setup
• common development platform
• standard NICADD physics apps
• no more desktop installs
• ample storage area
• shared datasets
• centralized authentication
• distributed computing

   
13
Plans and Schemes
 

• no more development on nicadd individual
  desktops
• setup packaging scripts
• migrate SIO-Server
• batch computing (fbs, pbs)
• physics software packages
• framework applications
• add more cluster nodes
• world hegemony (or at least Western hemisphere)

   
14
K2 says Hello