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Dual-use prototype for analysis tools

Dual-use prototype for analysis tools. ASG tools working group. David Adams BNL October 16 , 2013. Introduction. T rying to understand how to structure run 2 analysis tools Analysis tools must run in both Athena and Root Call these “dual-use”

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Dual-use prototype for analysis tools

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  1. Dual-use prototype for analysis tools ASG tools working group David Adams BNL October 16, 2013

  2. Introduction Trying to understand how to structure run 2 analysis tools • Analysis tools must run in both Athena and Root • Call these “dual-use” • With minimal code duplication (to ease maintenance) • Jet/Etmiss expanding definition of analysis tools • Any useful tool that can be run without Athena-specific services • Services means geometry, magnetic field, conditions DB • Useful means useful to late-stage analysis, e.g.: • Jet moment calculators: JVF, jet area, … • Association calculators: calo-track, calo-truth, … • Jet finding, grooming, … • Expect tool standards to be specified by the ASG tools working group • Requirements for user interface and tool developers interface • Plus supporting software • Here discuss the current implementation: AsgEx • See theAsgEx Twiki for additional information D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  3. Tool user requirements Tool interfaces • Different tools have different interfaces • Expect to switch to object (e.g. Jet) based interface • Instead of a long list of floats (pT, eta, NPV, …) • Tools intended to read and write event data can have no arguments • Configured with names of input and output collections Configuration • Users should have means to configure tools in both Athena and ROOT • For Athena, integrate with job options (or keep current syntax) • For Root, nice to have a C++ interface • Also like to have a common Python interface for Athena and Root • Same as current job options? More on this later. • Configuration should support tools using other tools • So individual tools can be simple and interchangeable • Job options support this with ToolHandle as developer interface D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  4. Tool developer requirements Want to make it easy to develop tools • Not just by expert programmers • Allow development in either Athena or Root • With easy port to the other environment • Implies we should establish coding conventions and provide supporting software to enable the above Configuration • Common means to access the configuration info discussed earlier Event data • Common means to read and write collections in current event • Common way to access the objects in those collections: xAOD Status codes • StatusCode in Root but tools can decide to use or not Logging messages • Enable Athena-like message service and ATH_MSG_XXX macros D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  5. Prototypes Jet/Etmiss has been developing dual-use prototypes • To help determine requirements (previous pages) • To see what is possible Prototype 1: JetEx • D. Adams talk in September • https://indico.cern.ch/conferenceDisplay.py?confId=271522 • Simple interface with wrappers for Athena • Criticized as too different from Athena Prototype 2: AsgEx • Latest version of this evolving SW described here • Code in SVN: user-dadams/AsgEx (5 packages) • Interface very similar to Athena • declareProperty(), evtStore()->retrieve(), ToolHandle, ATH_MSG_XXX ,… • Requires some supporting software • To give appearance of Athena property and event services in Root D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  6. AsgEx Python configuration Provide Python-based job configuration in AsgEx • As in Athena—try to use Athena syntax • See example code fragment below • Configures low-level tool JetDumper and then • High-level tool AsgRunner which uses the first tool • Work in progress (PA) to provide the same syntax in Root D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  7. AsgEx status Status of the AsgEx prototype • Both low- and high-level tool examples working • High-level = tool that uses other configured tools • Same tools (JetDumper, AsgRunner) code run in Athena and Root • Script-generated wrappers provided to allow configuration and event access in Root using Athena interfaces • Athena configuration with standard job options (previous page) • Root configuration with setProperty in C++ • Work in progress to add Python wrapper (job options syntax) • Separate interface and implementation classes (as in Athena) Class diagrams follow • Athena only, AsgEx in Root, AsgEx in Athena • Two example tools: low-level JetDumper, high-level AsgRunner • Legend: White = Athena, Red = ASG support, Green = user-supplied, Blue = automatically-generated Athena wrappers D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  8. Athena only (run 1 model for comparison) Tool interface Low-level tool High-level tool D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  9. AsgEx Root classes ASG support, mostly replacements for Athena ToolHandle typedefs Classes supplied by the tool developer D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  10. AsgEx Athena classes AsgEx general support classes Athena classes ToolHandle typedefs AsgEx Athena toolclasses (generated automatically) D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  11. Comments on AsgEx Intended to be prototype • Used to identify requirements and aid in design of final system • Propose we use this as the starting point for development • Assuming the user and developer interface are close to what we want • Allow development of physics tools to start very soon • Modular design makes it easy to substitute pieces (e.g. event store) • If we want to re-implement, we should start ASAP Event access is based on JetAnalysisEDM • Subset of jet AOD interface to either AOD or D3PD • Need to switch this to xAOD • When xAOD is available • Do we need/want access to D3PD or AOD with same interface? Python-based configuration under development • Likely to extend PropertyMgr, add ToolSvc • Latter might be nice to have in C++ world D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  12. Example tool Code follows for an example analysis tool • Creates fast jet inputs from an input collection • E.g. from clusters, tracks or truth particles • Just written yesterday—may have some problems • Illustrates the features of the developer interface • Header and source file on following pages • Code in AsgEx/AsgExJetReco • This package is not (yet) tested in Athena D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  13. Example tool header 1/2 // PseudoJetGetter.h #ifndefjetreco_PseudoJetGetter #define jetreco_PseudoJetGetter // David Adams // October 2013 // // Tool to fetch pseudo jets. #include "AsgExTool/AsgTool.h" #include "AsgExToolInterface/IProcessTool.h" #include "fastjet/PseudoJet.hh" #include "JetAnalysisEDM/JetDualUseEDMInclude.h" namespace jetreco { class PseudoJetGetter : virtual public asgex::IProcessTool, virtual public asg::AsgTool{ Ctor takes no arguments. From IProcessTool Tool must be in a namespace User interface Configuration parameters Inherit both interface and implementation D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013 public: typedefstd::vector<fastjet::PseudoJet> PseudoJetList; // Constructor. PseudoJetGetter(); // Append from a collection to a list of PseudoJets. template<typenameTList> int append(constTList& inputs, PseudoJetList& psjs) const; // Append from named collection to a list of PseudoJets. int appendTo(PseudoJetList& psjs) const; // Append from named input collection to named output collection. int process() const; // Dump to log. void print() const; private: //data // Job options. std::string m_incoll; std::string m_outcoll;

  14. Example tool header 2/2 }; } // end namespace jetreco #ifndef __CINT__ template<typenameTList> int jetreco::PseudoJetGetter:: append(constTList& inputs, PseudoJetList& psjs) const { for ( typenameTList::const_iteratoriinp=inputs.begin(); iinp!=inputs.end(); ++iinp ) { const JetAnalysisEDM::Particle* ppar = *iinp; fastjet::PseudoJetpsj(ppar->px(), ppar->py(), ppar->pz(), ppar->e()); psjs.push_back(psj); } ATH_MSG_DEBUG("After append, PseudoJet count is " << psjs.size()); return 0; } #endif // CINT #endif Templated method: constructs fastjet PseudoVector’s from particles using four-vector interface D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  15. Example tool source 1/2 // PseudoJetGetter.cxx #include "AsgExJetReco/PseudoJetGetter.h" using jetreco::PseudoJetGetter; //********************************************************************** PseudoJetGetter::PseudoJetGetter() { declareProperty("Input", m_incoll); declareProperty("Output", m_outcoll); } //********************************************************************** int PseudoJetGetter::appendTo(PseudoJetList& psjs) const { ATH_MSG_VERBOSE("Entering appendTo(PseudoJetList)..."); const JetCollection* pjets = 0; StatusCodesc = evtStore()->retrieve(pjets, m_incoll); if ( sc.isFailure() || pjets == 0 ) { ATH_MSG_ERROR("Unable to find input collection: " << m_incoll); return 1; } return append(*pjets, psjs); } Properties declared in ctor Athena-style message logging Data retrieved from event store Athena-style return code D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  16. Example tool source 2/2 //********************************************************************** int PseudoJetGetter::process() const { ATH_MSG_VERBOSE("Entering process()..."); PseudoJetList* ppsjs; constPseudoJetList* ppsjs_const; ppsjs_const = evtStore()->retrieve<PseudoJetList>(m_outcoll); ppsjs = const_cast<PseudoJetList*>(ppsjs_const); if ( ppsjs == 0 ) { ATH_MSG_VERBOSE("Creating new PseudoJet collection"); ppsjs = new PseudoJetList; evtStore()->record(m_outcoll, ppsjs); } else { ATH_MSG_VERBOSE("Using existing PseudoJet collection"); } return appendTo(*ppsjs); } //********************************************************************** void PseudoJetGetter::print() const { ATH_MSG_INFO(" Input collection: " << m_incoll); ATH_MSG_INFO(" Output collection: " << m_outcoll); ATH_MSG_INFO(" Output level: " << msg_level_name()); } Recording transient data in event store Common tool interface includes print method to show properties D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  17. Conclusions Dual-use tool example (AsgEx) in place • See the AsgEx Twikifor details • Example tools JetDumper and AsgRunner run in Root and Athena • Syntax very similar to Athena • No #ifdef or CPP macros in tool developer code Plans • ASG working group should decide whether to use AsgEx as the basis for future development or to re-implement • Starting to adding jet reconstruction tools based on AsgEx • New package AsgEx/AsgExJetReco • Migrate to xAOD • When xAOD specified (at least for jets and jet inputs: cluster, track, truth) • And data is available in xAOD or means provided to access common D3PD through xAOD interface • Add Python configuration for Root using Athena job options syntax D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  18. Extras Updated run 2 jet analysis use cases D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

  19. Run 2 jet analysis use cases D. Adams, BNL Dual-use tool prototype for run 2 ASG tools working group October 16, 2013

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