CMSSW: Glossary

Key Points

Introduction
  • The CMS SoftWare (CMSSW) is the software used by the CMS experiment for acquiring, producing, processing and analyzing its data.

  • CMSSW is built in a modular fashion around a main Framework.

Installation and Execution
  • A CMSSW area is not really installed but set up.

  • cmsRun is the CMSSW executable. There are also utilitarian scripts.

  • You can compile CMSSW with scram b

EDAnalyzers
  • An EDAnalyzer is a an edm class that generates a template for any analysis code using CMSSW.

  • There are essentially three important files in an EDAnalyzer package, the source code in c++, the python config file and a Buildfile for tracking dependencies.

The Source
  • The C++ source file of an EDAnalyzer is taylored for particle physics analysis under the CMSSW Framework.

  • This source file needs to be modified according to the analyzer needs

The Configuration
  • The Python implementation of the configuration of CMSSW is fundamentally modular.

  • The CMSSW configuration allows for the usage of already available code and/or make changes to yours without having to recompile.

Glossary

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