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Installing and Using ROOT
Release: 8.6.0 and greater
Installing the correct version of ROOT
at a remote site
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First see which version you need
for a particular SRT release
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For release 8.3.3 and beyond the
version is 2.23-09
>grep
ROOTVER $BFDIST/releases/<release>/SoftRelTools/arch_spec_ROOT.mk
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Create tar file at SLAC for the
architecture you're interested in
(at SLAC)
>cd
$BFROOT/package/root/<version>/$BFARCH
>gtar
--dereference --gzip -cf ~/root.tar.gz ./
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Now you've created a file called
root.tar.gz in your home directory
at SLAC
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Copy this file to your remote site
and untar it in whichever directory you wish to have your local root installation.
I recommend
$BFROOT/package/root/<version>/$BFARCH
in order to mimic the SLAC structure.
(at remote site)
>cd
$BFROOT/package/root/<version>/$BFARCH
>gtar
--gunzip -xf root.tar.gz
Customize SRT for your local
ROOT installation
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Go to your test release (let's call
it myRel) and checkout the SiteConfig
package
>cd
~/myRel
>addpkg
-h SiteConfig
>cd
SiteConfig/<mySite>/SoftRelTools
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Here <mySite>
is the name used for your local site in SiteConfig.
If you don't already have one set up for your site, you should probably
do it soon (look in Computing/Tools web pages for information about how
to do it).
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Create a new file called arch_spec_ROOT.mk+
with the following line:
ROOTPATH
:= $(BFROOT)/package/root/
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Check these changes into CVS, so
in the future you won't need to check out SiteConfig.
>cvs
add arch_spec_ROOT.mk+
>cvs
commit -m "<some comment>" arch_spec_ROOT.mk+
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Now you should be able to compile
and link jobs against your local ROOT installation.
Minimal Setup Required for Running
a KanGa Job
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The minimal files you need to actually
run a KanGa job locally are: the conditions
file and some data.
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So, simply copy over the latest
version of SLAC's conditions file to your local site (you'll have to create
the directories kanga/CondDB under
$BFROOT)
>cd
$BFROOT
>mkdir
kanga
>cd
kanga
>mkdir
CondDB
>cd
CondDB
>cp
/afs/slac.stanford.edu/g/babar/kanga/CondDB/BaBarConditions.root .
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You want to update this file every
time you bring over a new SRT release
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Now you can run a job on a KanGa
file
Running BetaApp on a KanGa file
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Go to your test release and specify
the name of a KanGa file you wish to run on. You can find KanGa files
for BaBar data at SLAC under the directory tree $BFROOT/kanga/EventStore.
>cd
~/myRel
>gmake
BetaApp.all
>cd
workdir
>setenv
RooInputCollection <KanGa Filename>
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Note that when setting RooInputCollection
you leave off the -micro.root from
the filename.
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Hopefully everything works!
Page author: Carlo Dallapiccola
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