Installation¶
Please note that Gaussino is an experiment-independent package. If you are looking for a concrete experiment implementation, here is the list:
Attention
Gaussino currently builds only in the LHCb environment! Feel free to test in another setup.
In the examples below, ee are going to use nightly build system in LHCb. You can check the status of nightly build by visiting the LHCb nightly webpage. There are a few nightly slots currently available for Gaussino:
lhcb-gaussino a stable slot with the most recent tags: Gaussino/v0rX and Gauss/v60rX,
lhcb-gaussino-dev a nightly slot with all the pending developments tested with Gaussino/master and Gauss/Futurev5,
lhcb-dd4hep the nightly slot used for the integration of DD4hep sub-detectors tested with the most recent tags: Gaussino/v0rX and Gauss/v60rX,
lhcb-gaussino-fastsim nightly slot dedicated to fast simulation developments with Geant4 10.7,
Currently, Gaussino is built in each nightly slots on 3 platforms:
x86_64_v2-centos7-gcc11-opt release build with DetDesc & DD4Hep geometry,
x86_64_v2-centos7-gcc11-dbg debug build with DetDesc & DD4Hep geometry,
x86_64_v2-centos7-gcc11+detdesc-opt release build with DetDesc only geometry,
Building full Gaussino (LHCb)¶
Using a local copy of the nightly build¶
We’re going to create a local copy of the projects used in the nightly slot. Gaussino requires Gaudi, Detector, LHCb, Run2Support and GaussinoExtLibs. LHCb and Run2Support are used when building Gaussino in the LHCb stack.
Make sure that you are using LbEnv on lxplus or similar. You can run this to be sure:
source /cvmfs/lhcb.cern.ch/lib/LbEnv
The following will make sure that you have the most recent platform.
lb-set-platform x86_64_v2-centos7-gcc11-opt
export LCG_VERSION=102b
Fetch the nightlies locally
lbn-install --verbose --projects=Gaudi,Geant4,DBASE,Detector,LHCb,Run2Support,GaussinoExtLibs lhcb-gaussino Today
cd lhcb-gaussino/Today
lb-set-workspace .
Attention
The Today version of the nightly slot might not always be available. Please, always check directly on the website if the build of Gaussino & Gauss was successful (cells in the table should be either orange or green, but not red!). Always use the latest version that was successful (yesterday, 1222 etc.).
Clone, configure, build and install Gaussino:
git clone ssh://git@gitlab.cern.ch:7999/Gaussino/Gaussino.git
cd Gaussino
lb-project-init .
make -j4 install
Building a subset of Gaussino packages (LHCb)¶
The example below shows you how to work and build a subset of the packages of Gaussino. We will use lb-dev for this purpose. We are going to need one of the nightly slots mentioned in the previous section.
source /cvmfs/lhcb.cern.ch/lib/LbEnv
lb-dev --nightly lhcb-gaussino/Today Gaussino/HEAD
cd GaussinoDev_HEAD
git lb-use Gaussino https://gitlab.cern.ch/Gaussino/Gaussino
Configure and build the package you’d like to modify. Below you will find an example for Sim/Gaussino.
git lb-checkout Gaussino/master Sim/Gaussino
make