Kka054 at 16:04, 10 March 2009

2009-03-10T16:04:22Z

← Older revision		Revision as of 16:04, 10 March 2009
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	These instructions are based on text found on the twiki page		These instructions are based on text found on the twiki page
	https://twiki.cern.ch/twiki/bin/view/~~Atlas~~/SusyDPDMaker		https://twiki.cern.ch/twiki/bin/view/AtlasProtected/SusyDPDMaker
	and requires ATHENA 13.0.40 release to work. Before running remember to do <tt>source mysetup.sh</tt> in your workspace.		and requires ATHENA 13.0.40 release to work. Before running remember to do <tt>source mysetup.sh</tt> in your workspace.

Kka054: New page: = Walkthrough: Setting up ATHENA on a central managed computers = The purpose of this walk through is to create a working ATHENA setup on the scratch disk of one of the centrally manage...

2009-03-10T16:03:19Z

New page: = Walkthrough: Setting up ATHENA on a central managed computers = The purpose of this walk through is to create a working *ATHENA* setup on the scratch disk of one of the centrally manage...

New page

= Walkthrough: Setting up ATHENA on a central managed computers =

The purpose of this walk through is to create a working *ATHENA* setup on the scratch disk of one of the centrally managed *Fedora 8* machines. This walk through works successfully on on my desktop machine '''iftsub041012'''. I've assumed you are using '''bash''', if you're using '''csh''', change '''*.sh''' to '''*.csh''', and all variable definitions from <tt>export A=b</tt> to <tt>set A b</tt>. If you are not using a Fedora 8 machine, things may not work. In the case of using a '''Scientific Linux 4''' machine, you can skip the legacy compiler step and the <tt>--pretend-platform</tt> flag to <tt>pacman</tt>.

== Installing ATHENA ==

The '''ATLAS''' offline software '''ATHENA''' can be installed by following the steps described in this section.
For your convenience the steps are also implemented in the following script
[%ATTACHURL%/setup_install.sh setup_install.sh]

=== Decide on a version to use and set up directories ===

The latest stable version of '''ATHENA''' when writing this was <tt>13.0.40</tt>.
You'll need a writable directory on a disk with lots of available space to install (~6.5 Gb),
for this an external disk or the <tt>/scratch</tt> partition is very useful. To simplify things declare
some environment variables and create the directory

<pre>
export VERSION=13.0.40
export BASEDIR=/scratch/ATLAS
export INSTALL=${BASEDIR}/ATLAS_${VERSION}
mkdir -p ${INSTALL}
</pre>

=== Legacy compilers ===

'''Fedora 8''' is '''''almost''''' compatible with '''slc4''' if you use the _legacy compilers_ <tt>gcc34</tt> and <tt>g++34</tt> (gcc 3.4.6) instead of the default compilers <tt>gcc</tt> and <tt>g++</tt> (gcc 4.1.2). To do this place links in to the legacy compilers named as the default compilers in front of your path

<pre>
mkdir -p ${INSTALL}/mybin
cd ${INSTALL}/mybin
ln -s /usr/bin/g++34/g++
ln -s /usr/bin/gcc34/gcc
export PATH=${INSTALL}/mybin/:$PATH
</pre>

=== Install and run <tt>pacman</tt> ===

<tt>pacman</tt> is a package installer available from http://physics.bu.edu/pacman/ .
Install it by running

<pre>
cd ${INSTALL}
wget http://physics.bu.edu/pacman/sample_cache/tarballs/pacman-latest.tar.gz
tar xfvz pacman-latest.tar.gz
</pre>

To install run
<pre>
cd ${INSTALL}/pacman-*
source setup.sh
cd ${INSTALL}
VERSION_=`echo ${VERSION} | sed 's,\.,_,g'`
pacman -allow trust-all-caches -pretend-platform SLC-4 -V -get am-CERN:AtlasOffline_${VERSION_}_i686_slc4_gcc34_opt
</pre>
answer '''yall''' to say yes to all questions (safe for a fresh install).

Note: '''''Installing ATHENA takes a while (even with a fast internet connection)'''''

== Creating a workarea to work on ==

A workarea using the ATHENA installation can be created by the steps in this section
For your convenience the steps are also implemented in the following script
[[%ATTACHURL%/setup_workarea.sh][setup_workarea.sh]]

=== Prepare environment ===

First set environment variables and create a workarea directory
<pre>
export VERSION=13.0.40
export BASE=/scratch/ATLAS
export WORKAREA=${BASE}/workarea_${VERSION}
export INSTALL=${BASE}/ATLAS_${VERSION}
export PATH=${INSTALL}/mybin:${PATH}
mkdir -p ${WORKAREA}
</pre>

=== Create a requirements file ===

The '''requirements''' file is used by <tt>cmt</tt>, it must have the path <tt>$WORKAREA/requirements</tt>.
The following file was adapted from https://twiki.cern.ch/twiki/bin/view/Atlas/WorkBookSetAccount
(note that <tt>SITEROOT</tt> should match your <tt>$INSTALL</tt> directory)
<pre>
set CMTSITE STANDALONE
set SITEROOT /scratch/ATLAS/
macro ATLAS_TEST_AREA /scratch/workarea
macro ATLAS_DIST_AREA ${SITEROOT}
apply_tag projectArea
macro SITE_PROJECT_AREA ${SITEROOT}
macro EXTERNAL_PROJECT_AREA ${SITEROOT}
apply_tag opt
apply_tag setup
apply_tag simpleTest
use AtlasLogin AtlasLogin-* $(ATLAS_DIST_AREA)
set CMTCONFIG i686-slc4-gcc34-opt
</pre>
It is important to get <tt>set SITEROOT /scratch/ATLAS/</tt> and <tt>macro ATLAS_TEST_AREA /scratch/workarea</tt> to point to your ATLAS software installation and workarea correct.

=== Prepare workspace ===

Use '''CMT''' to prepare for running
<pre>
cd /scratch/workarea
source /scratch/ATLAS/CMT/*/mgr/setup.sh
cmt config
. setup.sh -tag=$VERSION
mkdir $VERSION
</pre>
once this is done, you can run the <tt>root</tt> bundled with the production packages directly from the prompt.

You have to initialize the environment before each use, to make things easier create a script <tt>mysetup.sh</tt> that does all the steps for you
<pre>
export VERSION=13.0.40
export BASE=/scratch/ATLAS
export WORKAREA=${BASE}/workarea_${VERSION}
export INSTALL=${BASE}/ATLAS_${VERSION}
source setup.sh -tag=${VERSION}
export PATH=${INSTALL}/mybin:${PATH}
</pre>
and before using your environment just do <tt>source mysetup.sh</tt>

== Adding packages to workspace ==

How to install packages is also described in the wiki page GettingStartedWithAthena,
remeber to source to <tt>/scratch/workarea/mysetup.sh</tt> before compiling!
Packages are availible in the cvs http://atlas-sw.cern.ch/cgi-bin/viewcvs-atlas.cgi/offline/
Make sure that the version of the packages you download are compatible with your ATHENA release!
Add the cvs sub-directory to the workspace and unpack downloaded tar-ball there
<pre>
mkdir -p ${WORKAREA}/${VERSION}/SubDirectory
cd mkdir ${WORKAREA}/${VERSION}/SubDirectory
#download package here
tar xfvz Package.tar.gz
</pre>
it is not safe to remove the tar-ball. Next configure and build package
<pre>
cd Package/cmt
cmt config
source setup.sh
gmake
</pre>

=== Adding SUSYDPDMaker to your workarea ===

These instructions are based on text found on the twiki page
https://twiki.cern.ch/twiki/bin/view/Atlas/SusyDPDMaker
and requires ATHENA 13.0.40 release to work. Before running remember to do <tt>source mysetup.sh</tt> in your workspace.

Make sure you have the <tt>PhysicsAnalysis</tt> directory in your workarea
<pre>
pa_dir=${WORKAREA}/${VERSION}/PhysicsAnalysis
mkdir -p ${pa_dir}
</pre>
then download unpack and install <tt>DPDUtils-00-00-09</tt>
<pre>
cd ${pa_dir}
wget "http://atlas-sw.cern.ch/cgi-bin/viewcvs-atlas.cgi/offline/PhysicsAnalysis/DPDUtils.tar.gz?view=tar&pathrev=DPDUtils-00-00-09"
tar xfvz DPDUtils.tar.gz*
rm DPDUtils.tar.gz*
cd DPDUtils/cmt
cmt config
source setup.sh
gmake
</pre>
and <tt>SUSYPhys/SUSYDPDMaker-00-00-04</tt>
<pre>
mkdir -p ${pa_dir}/SUSYPhys
cd ${pa_dir}/SUSYPhys
wget "http://atlas-sw.cern.ch/cgi-bin/viewcvs-atlas.cgi/offline/PhysicsAnalysis/SUSYPhys/SUSYDPDMaker.tar.gz?view=tar&pathrev=SUSYDPDMaker-00-00-04"
tar xfvz SUSYDPDMaker.tar.gz*
rm SUSYDPDMaker.tar.gz*
cd SUSYDPDMaker/cmt
cmt config
source setup.sh
gmake
</pre>

AtlasKlientdriftWalkthrough - Revision history

Kka054 at 16:04, 10 March 2009

Kka054: New page: = Walkthrough: Setting up ATHENA on a central managed computers = The purpose of this walk through is to create a working *ATHENA* setup on the scratch disk of one of the centrally manage...

Kka054: New page: = Walkthrough: Setting up ATHENA on a central managed computers = The purpose of this walk through is to create a working ATHENA setup on the scratch disk of one of the centrally manage...