Pythia8_i Class Reference

#include <Pythia8_i.h>

Inheritance diagram for Pythia8_i:

Collaboration diagram for Pythia8_i:

Classes
class	CommandException

Public Member Functions
	Pythia8_i (const std::string &name, ISvcLocator *pSvcLocator)
	~Pythia8_i ()
virtual StatusCode	genInitialize ()
	For initializing the generator, if required.
virtual StatusCode	callGenerator ()
	For calling the generator on each iteration of the event loop.
virtual StatusCode	fillEvt (HepMC::GenEvent *evt)
	For filling the HepMC event object.
virtual StatusCode	fillWeights (HepMC::GenEvent *evt)
virtual StatusCode	genFinalize ()
	For finalising the generator, if required.
double	pythiaVersion () const
virtual StatusCode	sysInitialize () override
	Override sysInitialize.
virtual const DataObjIDColl &	extraOutputDeps () const override
	Return the list of extra output dependencies.
ServiceHandle< StoreGateSvc > &	evtStore ()
	The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.
const ServiceHandle< StoreGateSvc > &	detStore () const
	The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.
virtual StatusCode	sysStart () override
	Handle START transition.
virtual std::vector< Gaudi::DataHandle * >	inputHandles () const override
	Return this algorithm's input handles.
virtual std::vector< Gaudi::DataHandle * >	outputHandles () const override
	Return this algorithm's output handles.
Gaudi::Details::PropertyBase &	declareProperty (Gaudi::Property< T, V, H > &t)
void	updateVHKA (Gaudi::Details::PropertyBase &)
MsgStream &	msg () const
bool	msgLvl (const MSG::Level lvl) const
Event loop algorithm methods: not to be overloaded
StatusCode	initialize ()
StatusCode	execute ()
StatusCode	finalize ()
Gen-specific event loop methods: to be overloaded
virtual StatusCode	genuserInitialize ()
	For initialization of user code, if required. Called after genInitialize.
Event collection accessors (const and non-const)
HepMC::GenEvent *event	ATLAS_NOT_CONST_THREAD_SAFE ()
	Access the current signal event (first in the McEventCollection)
McEventCollection *events	ATLAS_NOT_CONST_THREAD_SAFE ()
	Access the current event's McEventCollection.
const HepMC::GenEvent *	event_const () const
	Access the current signal event (const)
const McEventCollection *	events_const () const
	Access the current event's McEventCollection (const)
const McEventCollection *	events_const (const EventContext &ctx) const
Particle data accessors
const ServiceHandle< IPartPropSvc >	partPropSvc () const
	Access the particle property service.
const HepPDT::ParticleDataTable &	particleTable () const
	Get a particle data table.
const HepPDT::ParticleDataTable &	pdt () const
	Shorter alias to get a particle data table.
const HepPDT::ParticleData *	particleData (int pid) const
	Access an element in the particle data table.

Static Public Member Functions
static const std::string &	pythia_stream ()
static std::string	xmlpath ()

Protected Member Functions
bool	useRndmGenSvc () const
bool	useReseed () const
void	renounceArray (SG::VarHandleKeyArray &handlesArray)
	remove all handles from I/O resolution
std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void >	renounce (T &h)
void	extraDeps_update_handler (Gaudi::Details::PropertyBase &ExtraDeps)
	Add StoreName to extra input/output deps as needed.

Protected Attributes
std::unique_ptr< Pythia8::Pythia >	m_pythia {}
HepMC::Pythia8ToHepMC	m_pythiaToHepMC
UnsignedIntegerProperty	m_maxFailures {this, "MaxFailures", 10}
BooleanProperty	m_useRndmGenSvc {this, "useRndmGenSvc", true, "the max number of consecutive failures"}
std::shared_ptr< customRndm >	m_atlasRndmEngine {}
BooleanProperty	m_useReseed {this,"useReseed", false}
IntegerProperty	m_dsid {this, "Dsid", 999999, "Dataset ID number"}
StringArrayProperty	m_userHooks {this, "UserHooks", {} }
DoubleProperty	m_pt0timesMPI {this,"pT0timesMPI", 1.0}
DoubleProperty	m_numberAlphaS {this,"numberAlphaS", 3.0}
BooleanProperty	m_sameAlphaSAsMPI {this,"useSameAlphaSasMPI", false}
Properties
std::string	m_mcEventKey {}
	StoreGate key for the MC event collection (defaults to GEN_EVENT)
BooleanProperty	m_mkMcEvent {this, "MakeMcEvent", false, "Create a new MC event collection if it doesn't exist"}
	Flag to determine if a new MC event collection should be made if it doesn't exist.

Private Types
enum	PDGID {   PROTON =2212 , ANTIPROTON =-2212 , LEAD =1000822080 , OXYGEN =1000080160 ,   HELIUM = 1000020040 , NEUTRON =2112 , ANTINEUTRON =-2112 , MUON =13 ,   ANTIMUON =-13 , ELECTRON =11 , POSITRON =-11 , INVALID =0 }
typedef ServiceHandle< StoreGateSvc >	StoreGateSvc_t

Private Member Functions
Gaudi::Details::PropertyBase &	declareGaudiProperty (Gaudi::Property< T, V, H > &hndl, const SG::VarHandleKeyType &)
	specialization for handling Gaudi::Property<SG::VarHandleKey>

Static Private Member Functions
static std::string	findValue (const std::string &command, const std::string &key)
static int	s_allowedTunes (double version)

Private Attributes
int	m_internal_event_number {0}
double	m_version {-1.}
StringArrayProperty	m_commands {this, "Commands", {} }
std::vector< std::string >	m_userParams
std::vector< std::string >	m_userModes
DoubleProperty	m_collisionEnergy {this, "CollisionEnergy", 14000.0}
StringProperty	m_beam1 {this, "Beam1", "PROTON"}
StringProperty	m_beam2 {this, "Beam2", "PROTON"}
bool	m_override_transform_beamenergy {false}
StringProperty	m_lheFile {this, "LHEFile", ""}
BooleanProperty	m_doCKKWLAcceptance {this, "CKKWLAcceptance", false}
BooleanProperty	m_doFxFxXS {this, "FxFxXS", false}
BooleanProperty	m_computeEfficiency {this, "computeEfficiency", false}
double	m_nAccepted {0.}
double	m_nMerged {0.}
double	m_sigmaTotal {0.}
double	m_conversion {1.}
unsigned int	m_failureCount {0}
std::map< std::string, PDGID >	m_particleIDs
std::vector< long int >	m_seeds {}
StringProperty	m_userProcess {this, "UserProcess", ""}
std::shared_ptr< Pythia8::Sigma2Process >	m_procPtr {}
std::vector< UserHooksPtrType >	m_userHooksPtrs {}
StringProperty	m_userResonances {this, "UserResonances", ""}
std::vector< std::shared_ptr< Pythia8::ResonanceWidths > >	m_userResonancePtrs
BooleanProperty	m_useLHAPDF {this, "UseLHAPDF", true}
StringProperty	m_particleDataFile {this, "ParticleData", ""}
StringProperty	m_outputParticleDataFile {this, "OutputParticleData", "ParticleData.local.xml"}
double	m_mergingWeight {1.0}
double	m_enhanceWeight {1.0}
std::vector< std::string >	m_weightIDs {}
std::vector< std::string >	m_weightNames {}
bool	m_doLHE3Weights {false}
std::vector< std::string >	m_weightCommands {}
std::vector< std::string >	m_showerWeightNames {"nominal"}
StringArrayProperty	m_showerWeightNamesProp {this, "ShowerWeightNames", {} }
PublicToolHandle< IPythia8Custom >	m_athenaTool {this, "CustomInterface", ""}
BooleanProperty	m_saveLHE {this, "SaveLHERecord", false}
Pythia8::SuppressSmallPT *	m_SuppressSmallPT {}
DataObjIDColl	m_extendedExtraObjects
StoreGateSvc_t	m_evtStore
	Pointer to StoreGate (event store by default)
StoreGateSvc_t	m_detStore
	Pointer to StoreGate (detector store by default)
std::vector< SG::VarHandleKeyArray * >	m_vhka
bool	m_varHandleArraysDeclared

Features for derived classes to use internally
IntegerProperty	m_randomSeed {this, "RandomSeed", 1234567, "Random seed for the built-in random engine"}
	Seed for random number engine.
BooleanProperty	m_isAfterburner {this, "IsAfterburner", false, "Set true if generator modifies existing events rather than creating new ones"}
	Flag for normal vs. afterburner generators.
ServiceHandle< IAthRNGSvc >	m_rndmSvc {this, "RndmSvc", "AthRNGSvc"}
	Data members.
ServiceHandle< IIncidentSvc >	m_incidentSvc {this, "IncidentSvc", "IncidentSvc"}
	Handle on the incident service.
CLHEP::HepRandomEngine *	getRandomEngine (const std::string &streamName, const EventContext &ctx) const
CLHEP::HepRandomEngine *	getRandomEngine (const std::string &streamName, unsigned long int randomSeedOffset, const EventContext &ctx) const
CLHEP::HepRandomEngine *	getRandomEngineDuringInitialize (const std::string &streamName, unsigned long int randomSeedOffset, unsigned int conditionsRun=1, unsigned int lbn=1) const

Utility event-mangling functions
Todo Replace with HepMC units when available
ServiceHandle< IPartPropSvc >	m_ppSvc {this, "PartPropSvc", "PartPropSvc"}
	Handle on the particle property service.
SG::ReadHandleKey< McEventCollection >	m_mcevents_const { this, "McEventKey", "GEN_EVENT", "StoreGate key of the MC event collection" }
	Const handle to the MC event collection.
void	GeVToMeV (HepMC::GenEvent *evt)
	Scale event energies/momenta by x 1000.
void	MeVToGeV (HepMC::GenEvent *evt)
	Scale event energies/momenta by x 1/1000.
void	cmTomm (HepMC::GenEvent *evt)
	Scale event lengths by x 10.
void	mmTocm (HepMC::GenEvent *evt)
	Scale event lengths by x 1/10.

Detailed Description

Definition at line 62 of file Pythia8_i.h.

Member Typedef Documentation

StoreGateSvc_t

typedef ServiceHandle<StoreGateSvc> AthCommonDataStore< AthCommonMsg< Algorithm > >::StoreGateSvc_t

privateinherited

Definition at line 388 of file AthCommonDataStore.h.

Member Enumeration Documentation

PDGID

enum Pythia8_i::PDGID

private

Enumerator
PROTON
ANTIPROTON
LEAD
OXYGEN
HELIUM
NEUTRON
ANTINEUTRON
MUON
ANTIMUON
ELECTRON
POSITRON
INVALID

Definition at line 120 of file Pythia8_i.h.

{PROTON=2212, ANTIPROTON=-2212, LEAD=1000822080, OXYGEN=1000080160, HELIUM= 1000020040, NEUTRON=2112, ANTINEUTRON=-2112, MUON=13, ANTIMUON=-13, ELECTRON=11, POSITRON=-11, INVALID=0};

Constructor & Destructor Documentation

Pythia8_i()

Pythia8_i::Pythia8_i	(	const std::string &	name,
		ISvcLocator *	pSvcLocator )

Definition at line 68 of file Pythia8_i.cxx.

: GenModule(name, pSvcLocator)
{
  m_particleIDs["PROTON"]      = PROTON;
  m_particleIDs["ANTIPROTON"]  = ANTIPROTON;
  m_particleIDs["ELECTRON"]    = ELECTRON;
  m_particleIDs["POSITRON"]    = POSITRON;
  m_particleIDs["NEUTRON"]     = NEUTRON;
  m_particleIDs["ANTINEUTRON"] = ANTINEUTRON;
  m_particleIDs["MUON"]        = MUON;
  m_particleIDs["ANTIMUON"]    = ANTIMUON;
  m_particleIDs["LEAD"]        = LEAD;
  m_particleIDs["OXYGEN"]      = OXYGEN;
  m_particleIDs["HELIUM"]      = HELIUM;
 
}

~Pythia8_i()

Pythia8_i::~Pythia8_i

(

)

Definition at line 86 of file Pythia8_i.cxx.

                      {
 
  #ifndef PYTHIA8_3SERIES
//  if(m_userHookPtr != 0) delete m_userHookPtr;
 
//  for(UserHooksPtrType ptr: m_userHooksPtrs){
//    delete ptr;
//  }
  #endif
}

Member Function Documentation

ATLAS_NOT_CONST_THREAD_SAFE() [1/2]

HepMC::GenEvent *event GenBase::ATLAS_NOT_CONST_THREAD_SAFE ( )

inlineinherited

Access the current signal event (first in the McEventCollection)

Note

This function will make a new McEventCollection if there is not already a valid one and MakeMcEvent=True.

Definition at line 76 of file GenBase.h.

                                                      {
    if (events()->empty())
      ATH_MSG_ERROR("McEventCollection is empty during first event access");
    return *(events()->begin());
  }

ATLAS_NOT_CONST_THREAD_SAFE() [2/2]

McEventCollection *events GenBase::ATLAS_NOT_CONST_THREAD_SAFE ( )

inherited

Access the current event's McEventCollection.

Note

This function will make a new McEventCollection if there is not already a valid one and MakeMcEvent=True.

callGenerator()

StatusCode Pythia8_i::callGenerator ( )

virtual

For calling the generator on each iteration of the event loop.

Reimplemented from GenModule.

Reimplemented in MultiPy8Pileup, and Pythia8B_i.

Definition at line 367 of file Pythia8_i.cxx.

                                   {
 
  ATH_MSG_DEBUG(">>> Pythia8_i from callGenerator");
  if(m_useRndmGenSvc && m_useReseed){
    //Re-seed the random number stream
    long seeds[7];
    const EventContext& ctx = Gaudi::Hive::currentContext();
    ATHRNG::calculateSeedsMC21(seeds, s_pythia_stream,  ctx.eventID().event_number(), m_dsid, m_randomSeed);
    m_atlasRndmEngine->getEngine()->setSeeds(seeds, 0); // NOT THREAD-SAFE
    m_seeds.clear();
    m_seeds.push_back(seeds[0]);
    m_seeds.push_back(seeds[1]);
  }
 
  bool status = m_pythia->next();
 
  StatusCode returnCode = StatusCode::SUCCESS;
 
  if(!status){
    ++m_failureCount;
    if(m_failureCount >= m_maxFailures){
      ATH_MSG_ERROR("Exceeded the max number of consecutive event failures.");
      returnCode =  StatusCode::FAILURE;
    }else{
      ATH_MSG_INFO("Event generation failed - re-trying.");
      returnCode = this->callGenerator();
    }
  }
 
  ATH_MSG_DEBUG("Now checking with Tool.empty() second time");
  if( ! m_athenaTool.empty() ){
      StatusCode stat = m_athenaTool->ModifyPythiaEvent(*m_pythia);
      if(stat != StatusCode::SUCCESS) returnCode = stat;
  }
 
  m_failureCount = 0;
 
  m_nAccepted += 1.;
  // some CKKWL merged events have zero weight (or unfilled event).
  // start again with such events
 
  double eventWeight = m_pythia->info.mergingWeight()*m_pythia->info.weight();
 
 
  if(returnCode != StatusCode::FAILURE &&
     // Here this is a double, but it may be converted into float at some point downstream
     (std::abs(eventWeight) < std::numeric_limits<float>::min() ||
      m_pythia->event.size() < 2)){
 
       returnCode = this->callGenerator();
     } else if ( std::abs(eventWeight) < std::numeric_limits<float>::min() &&
                 std::abs(eventWeight) > std::numeric_limits<double>::min() ){
       ATH_MSG_WARNING("Found event weight " << eventWeight << " between the float and double precision limits. Rejecting event.");
     } else {
       m_nMerged += eventWeight;
       ++m_internal_event_number;
 
       // For FxFx cross section:
       m_sigmaTotal+=m_pythia->info.weight();
     }
 
  return returnCode;
}

cmTomm()

void GenBase::cmTomm ( HepMC::GenEvent * evt )

protectedinherited

Scale event lengths by x 10.

Definition at line 78 of file GenBase.cxx.

                                       {
  for (HepMC::GenEvent::vertex_iterator vtx = evt->vertices_begin(); vtx != evt->vertices_end(); ++vtx) {
    const HepMC::FourVector fv((*vtx)->position().x() * 10,
                               (*vtx)->position().y() * 10,
                               (*vtx)->position().z() * 10,
                               (*vtx)->position().t() * 10);
    (*vtx)->set_position(fv);
  }
}

declareGaudiProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< Algorithm > >::declareGaudiProperty ( Gaudi::Property< T, V, H > & hndl, const SG::VarHandleKeyType &  )

inlineprivateinherited

specialization for handling Gaudi::Property<SG::VarHandleKey>

Definition at line 156 of file AthCommonDataStore.h.

  {
    return *AthCommonDataStore<PBASE>::declareProperty(hndl.name(),
                                                       hndl.value(), 
                                                       hndl.documentation());
 
  }

declareProperty()

Gaudi::Details::PropertyBase & AthCommonDataStore< AthCommonMsg< Algorithm > >::declareProperty ( Gaudi::Property< T, V, H > & t )

inlineinherited

Definition at line 145 of file AthCommonDataStore.h.

                                                                     {
    typedef typename SG::HandleClassifier<T>::type htype;
    return AthCommonDataStore<PBASE>::declareGaudiProperty(t, htype());
  }

detStore()

const ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< Algorithm > >::detStore ( ) const

inlineinherited

The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 95 of file AthCommonDataStore.h.

{ return m_detStore; }

event_const()

const HepMC::GenEvent * GenBase::event_const ( ) const

inlineinherited

Access the current signal event (const)

Definition at line 83 of file GenBase.h.

                                           {
    if (events_const()->empty())
      ATH_MSG_ERROR("Const McEventCollection is empty during first event access");
    return *(events_const()->begin());
  }

events_const() [1/2]

const McEventCollection * GenBase::events_const ( ) const

inlineinherited

Access the current event's McEventCollection (const)

Definition at line 96 of file GenBase.h.

                                                {
    return events_const( getContext() );
  }

events_const() [2/2]

const McEventCollection * GenBase::events_const ( const EventContext & ctx ) const

inlineinherited

Definition at line 99 of file GenBase.h.

                                                                         {
    SG::ReadHandle<McEventCollection> ret = SG::makeHandle(m_mcevents_const, ctx);
    if (!ret.isValid())
      ATH_MSG_ERROR("No McEventCollection found in StoreGate with key " << m_mcevents_const.key());
    return ret.cptr();
  }

evtStore()

ServiceHandle< StoreGateSvc > & AthCommonDataStore< AthCommonMsg< Algorithm > >::evtStore ( )

inlineinherited

The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 85 of file AthCommonDataStore.h.

{ return m_evtStore; }

execute()

StatusCode GenModule::execute ( )

virtualinherited

Todo

Remove hard-coded alg name checking (already incomplete)

Reimplemented from GenBase.

Definition at line 70 of file GenModule.cxx.

                              {
  // Examples of how to retrieve the random number engine for a given
  // stream.
  // NB getRandomEngine should only be called once per event for a
  // given stream, as it causes the stream to be re-seeded each time
  // it is called.
 
  // Example 1 - seeded based on the current event number (+ slot, run, streamName)
  //const EventContext& ctx = Gaudi::Hive::currentContext();
  //CLHEP::HepRandomEngine* rndmEngine = this->getRandomEngine("MyStream", ctx);
 
  // Example 2 - seeded based on the m_randomSeed property (+ slot, run, streamName)
  //const EventContext& ctx = Gaudi::Hive::currentContext();
  //CLHEP::HepRandomEngine* rndmEngine = this->getRandomEngine("MyStream", m_randomSeed.value(), ctx);
 
  // Call the code that generates an event
  CHECK(this->callGenerator());
 
  // Create the MC event and send the GeneratorEvent stored in it to fillEvt
  HepMC::GenEvent* evt = HepMC::newGenEvent(1,1);
  CHECK(this->fillEvt(evt));
  HepMC::fillBarcodesAttribute(evt);
 
  // Add the event to the MC event collection
  if (events()) {
    // If this is an "afterburner" generator, replace the last event rather than add a new one
    if (m_isAfterburner.value() || name() == "Tauola" || name() == "Photos") {
      events()->pop_back();
    }
    // Add the event to the end of the collection
    events()->push_back(evt);
    ATH_MSG_DEBUG("MC event added to McEventCollection");
 
    // remove the empty event in case of ParticleDecayer
    if (name() == "ParticleDecayer") {
      events()->pop_back();
    }
  }
 
  // Call the incident service to notify that an event has been made
  m_incidentSvc->fireIncident( Incident(name(), "McEventGenerated") );
  return StatusCode::SUCCESS;
}

extraDeps_update_handler()

void AthCommonDataStore< AthCommonMsg< Algorithm > >::extraDeps_update_handler ( Gaudi::Details::PropertyBase & ExtraDeps )

protectedinherited

Add StoreName to extra input/output deps as needed.

use the logic of the VarHandleKey to parse the DataObjID keys supplied via the ExtraInputs and ExtraOuputs Properties to add the StoreName if it's not explicitly given

extraOutputDeps()

const DataObjIDColl & AthAlgorithm::extraOutputDeps ( ) const

overridevirtualinherited

Return the list of extra output dependencies.

This list is extended to include symlinks implied by inheritance relations.

Definition at line 50 of file AthAlgorithm.cxx.

{
  // If we didn't find any symlinks to add, just return the collection
  // from the base class.  Otherwise, return the extended collection.
  if (!m_extendedExtraObjects.empty()) {
    return m_extendedExtraObjects;
  }
  return Algorithm::extraOutputDeps();
}

fillEvt()

StatusCode Pythia8_i::fillEvt ( HepMC::GenEvent * evt )

virtual

For filling the HepMC event object.

Implements GenModule.

Reimplemented in MultiPy8Pileup, and Pythia8B_i.

Definition at line 432 of file Pythia8_i.cxx.

                                               {
 
  ATH_MSG_DEBUG(">>> Pythia8_i from fillEvt");
 
  evt->set_event_number(m_internal_event_number);
 
  // if using "getGroupWeight" and | lhastrategy | = 4, then need to convert mb to pb ( done otherwise when calling info.weight(), [...] )
  if( m_internal_event_number == 1 && std::abs(m_pythia->info.lhaStrategy()) == 4 ) {
     m_conversion = ( (double) PYTHIA8_CONVERSION);
     ATH_MSG_DEBUG(" LHA strategy needs a conversion to fix Pythia8 shower weights bug(s) equal to " << m_conversion);
  }
 
 
  if(m_pythia->event.size() < 2){
    ATH_MSG_ERROR("Something wrong with this event - it contains fewer than 2 particles!");
    ATH_MSG_ERROR("internal event number is "<<m_internal_event_number);
    return StatusCode::FAILURE;
  }
 
  m_pythiaToHepMC.fill_next_event(*m_pythia, evt, m_internal_event_number);
 
  // In case we're asked, save the LHE event as an attribute. This only works in HEPMC3.
  if(m_saveLHE){
#ifdef HEPMC3
    auto evtlhe = std::make_shared<HepMC::GenEvent>();
    m_pythiaToHepMC.fill_next_event(m_pythia->process, evtlhe.get(), m_internal_event_number, &m_pythia->info, &m_pythia->settings);
    auto extra = std::make_shared<HepMC::ShortEventAttribute>(evtlhe.get());
    evt->add_attribute("LHERecord", extra);
#else
    ATH_MSG_WARNING("LHE record saving requested, but not implemented with HEPMC2 functionality.");
#endif
  }
 
  // in debug mode you can check whether the pdf information is stored
  if(evt->pdf_info()){
#ifdef HEPMC3
    ATH_MSG_DEBUG("PDFinfo id1:" << evt->pdf_info()->parton_id[0]);
    ATH_MSG_DEBUG("PDFinfo id2:" << evt->pdf_info()->parton_id[1]);
    ATH_MSG_DEBUG("PDFinfo x1:" << evt->pdf_info()->x[0]);
    ATH_MSG_DEBUG("PDFinfo x2:" << evt->pdf_info()->x[1]);
    ATH_MSG_DEBUG("PDFinfo scalePDF:" << evt->pdf_info()->scale);
    ATH_MSG_DEBUG("PDFinfo pdf1:" << evt->pdf_info()->pdf_id[0]);
    ATH_MSG_DEBUG("PDFinfo pdf2:" << evt->pdf_info()->pdf_id[1]);
#else
    ATH_MSG_DEBUG("PDFinfo id1:" << evt->pdf_info()->id1());
    ATH_MSG_DEBUG("PDFinfo id2:" << evt->pdf_info()->id2());
    ATH_MSG_DEBUG("PDFinfo x1:" << evt->pdf_info()->x1());
    ATH_MSG_DEBUG("PDFinfo x2:" << evt->pdf_info()->x2());
    ATH_MSG_DEBUG("PDFinfo scalePDF:" << evt->pdf_info()->scalePDF());
    ATH_MSG_DEBUG("PDFinfo pdf1:" << evt->pdf_info()->pdf1());
    ATH_MSG_DEBUG("PDFinfo pdf2:" << evt->pdf_info()->pdf2());
#endif
  }
  else
    ATH_MSG_DEBUG("No PDF information available in HepMC::GenEvent!");
 
  // set the randomseeds
  if(m_useRndmGenSvc) HepMC::set_random_states(evt,m_seeds);
 
  // fill weights
  ATH_CHECK(fillWeights(evt));
 
  return StatusCode::SUCCESS;
}

fillWeights()

StatusCode Pythia8_i::fillWeights ( HepMC::GenEvent * evt )

virtual

mismatch in weight name!

Definition at line 498 of file Pythia8_i.cxx.

                                                   {
 
  // reset
  m_mergingWeight    = m_pythia->info.mergingWeightNLO(); // first initialisation, good for the nominal weight in any case (see Merging:includeWeightInXsection).
  m_enhanceWeight    = 1.0;  // better to keep the enhancement from UserHooks in a separate variable, to keep the code clear
 
#ifndef PYTHIA8_304SERIES
  // include Enhance userhook weight
  for(const auto &hook: m_userHooksPtrs) {
    if (hook->canEnhanceEmission()) {
      m_enhanceWeight *= hook->getEnhancedEventWeight();
    }
  }
#endif // not PYTHIA8_304SERIES
 
  // DO NOT try to distinguish between phase space and merging contributions: only their product contains both, so always multiply them in order to be robust
  double eventWeight = m_pythia->info.weight() * m_mergingWeight * m_enhanceWeight; 
 
  std::map<std::string,double> fWeights; // temporary weight vector, needed while managing hepmc2 and 3 simultaneously
 
  // save as Default the usual pythia8 weight, including enhancements
  // NB: info.weight() is built upon info.eventWeightLHEF (but includes shower "decorations"), not from the rwgt LHE vector.
  size_t atlas_specific_weights = 1;
  fWeights["Default"]=eventWeight;
  if(m_internal_event_number == 1)  {
     ATH_MSG_INFO("found LHEF version "<< m_pythia->info.LHEFversion() );
     if (m_pythia->info.LHEFversion() > 1)  m_doLHE3Weights = true;
     m_weightIDs.clear();
     m_weightIDs.push_back("Default"); // notice that we are assigning a weightname = weightID
  }
 
  // Now systematic weights: a) generator and b) shower variations
  // merging implies reading from lhe files (while the opposite is not true, ok, but still works)
  if (m_lheFile!="") {
       // remember that the true merging component can be disentangled only when there are LHE input events
 
       // make sure to get the merging weight correctly: this is needed  -only- for systematic weights (generator and parton shower variations)
       // NB: most robust way, regardless of the specific value of Merging:includeWeightInXsection (if on, info.mergingWeight() is always 1.0 ! )
       m_mergingWeight *= ( m_pythia->info.weight() / m_pythia->info.eventWeightLHEF ); // this is the actual merging component, regardless of conventions,
                                                                                      // needed by systematic variation weights
                                                                                      // this includes rare compensation or selection-biased weights
  }
 
 
  ATH_MSG_DEBUG("Event weights: enhancing weight, merging weight, total weight = "<<m_enhanceWeight<<", "<<m_mergingWeight<<", "<<eventWeight);
 
  // we already filled the "Default" weight
  std::vector<std::string>::const_iterator id = m_weightIDs.begin()+atlas_specific_weights;
 
  // a) fill generator weights
  if(m_pythia->info.getWeightsDetailedSize() != 0){
    for(std::map<std::string, Pythia8::LHAwgt>::const_iterator wgt = m_pythia->info.rwgt->wgts.begin();
        wgt != m_pythia->info.rwgt->wgts.end(); ++wgt){
 
      if(m_internal_event_number == 1){
        m_weightIDs.push_back(wgt->first);
      }else{
        if(*id != wgt->first){
          ATH_MSG_ERROR("Mismatch in LHE3 weight id.  Found "<<wgt->first<<", expected "<<*id);
          return StatusCode::FAILURE;
        }
        ++id;
      }
 
      std::map<std::string, Pythia8::LHAweight>::const_iterator weightName = m_pythia->info.init_weights->find(wgt->first);
      if(weightName != m_pythia->info.init_weights->end()){
        fWeights[weightName->second.contents] = m_mergingWeight * m_enhanceWeight * wgt->second.contents;
      }else{
        // if no name was assigned/found, assign a weightname = weightid
        fWeights[wgt->first] = m_mergingWeight * m_enhanceWeight * wgt->second.contents;
      }
 
    }
  }
 
  // b) shower weight variations
  // always start from second shower weight: the first was saved already as "Default"
 
  for(int iw = 1; iw < m_pythia->info.PYTHIA8_NWEIGHTS(); ++iw){
 
    std::string wtName = ((int)m_showerWeightNames.size() == m_pythia->info.PYTHIA8_NWEIGHTS())? m_showerWeightNames[iw]: "ShowerWt_" +std::to_string(iw);
 
    fWeights[wtName] = m_mergingWeight * m_enhanceWeight * m_pythia->info.PYTHIA8_WEIGHT(iw)*m_conversion;
 
    if(m_internal_event_number == 1) {
        m_weightIDs.push_back(wtName);
        ATH_MSG_DEBUG("Shower weight name, value, conversion: "<<wtName<<", "<<  fWeights[wtName] <<","<<m_conversion );
    }
  }
 
  // Now save, as a backup, also the LHEF weight without enhancements (useful for possible, rare, non-default cases)
  // to make clear that it should not be used in analyses, save it always with a -10 factor (so that its goal is clear even if not checking its name)
  if (m_lheFile!="") 
  {
       fWeights["EXTRA_bare_LHE_weight"]=(-10.0)*m_pythia->info.eventWeightLHEF;
       if(m_internal_event_number == 1)  m_weightIDs.push_back("EXTRA_bare_LHE_weight");
  }
 
  // Sad, but needed: create a string vector with acceptable order of weight names
  if(m_internal_event_number == 1){
     m_weightNames.clear();
     for(const std::string &id : m_weightIDs){
       if(m_doLHE3Weights) {
         std::map<std::string, Pythia8::LHAweight>::const_iterator weight = m_pythia->info.init_weights->find(id);
         if(weight != m_pythia->info.init_weights->end()) m_weightNames.push_back(weight->second.contents);
         else m_weightNames.push_back(id);
       }
       else { 
     m_weightNames.push_back(id);
       }
     }
     if (m_weightNames.size() !=  fWeights.size() ) {
         ATH_MSG_ERROR("Something wrong when building list of weight names: " << m_weightNames.size() << " vs "<< fWeights.size() << ", exiting ...");
         return StatusCode::FAILURE;
     }
  }
 
  // The following depends on the specific hepmc2/3 implementation
#ifdef HEPMC3
  if (!evt->run_info()) {
     evt->set_run_info(m_runinfo);
  }
  evt->run_info()->set_weight_names(m_weightNames);
 
  // for the first event, weight EXTRA_bare_LHE_weight is not present in evt->weights(), so we need to book a place for it by hand
  if (m_internal_event_number == 1 && evt->run_info()->weight_names().size() == evt->weights().size()+1 ) {
     evt->weights().push_back(1.0);
  }
 
  // added conversion GeV ->  MeV to ensure correct units
  evt->set_units(HepMC3::Units::MEV, HepMC3::Units::MM);
 
  evt->weights().resize(fWeights.size(), 1.0);
  for (const auto & w: fWeights) {
      evt->weight(w.first)=w.second;
  }
 
  auto beams=evt->beams();
  ATH_MSG_DEBUG( " Energy of the beams " << beams[0]->momentum().e() );
 
//uncomment to list HepMC events
//    std::cout << " print::listing Pythia8 " << std::endl;
//    HepMC3::Print::listing(std::cout, *evt); 
 
#else
  evt->weights().clear();
  for (const auto& w: m_weightNames ) {evt->weights()[w]=fWeights[w];}
  auto beams=evt->beam_particles();
  ATH_MSG_DEBUG( " Energy of the beams " << beams.first->momentum().e() );
 
//uncomment to list HepMC events
//    std::cout << " print::listing Pythia8 " << std::endl;
//    evt->print();
#endif
 
  return StatusCode::SUCCESS;
}

finalize()

StatusCode GenModule::finalize ( )

inlineinherited

Definition at line 55 of file GenModule.h.

{ return genFinalize(); }

findValue()

std::string Pythia8_i::findValue ( const std::string & command, const std::string & key )

staticprivate

genFinalize()

StatusCode Pythia8_i::genFinalize ( )

virtual

For finalising the generator, if required.

Reimplemented from GenModule.

Reimplemented in MultiPy8Pileup, and Pythia8B_i.

Definition at line 657 of file Pythia8_i.cxx.

                                 {
 
  ATH_MSG_INFO(">>> Pythia8_i from genFinalize");
  m_pythia->stat();
 
  Pythia8::Info info = m_pythia->info;
  double xs = info.sigmaGen(); // in mb
 
  if(m_doCKKWLAcceptance){
    const double accfactor = m_nMerged / info.nAccepted();
    ATH_MSG_DEBUG("Multiplying cross-section by CKKWL merging acceptance of "<<m_nMerged <<"/" <<info.nAccepted() << " = " << accfactor
                  << ": " << xs << " -> " << xs*accfactor);
    xs *= accfactor;
  }
 
  if(m_doFxFxXS){
    ATH_MSG_DEBUG("Using FxFx cross section recipe: xs = "<< m_sigmaTotal << " / " << 1e9*info.nTried());
    xs = m_sigmaTotal / (1e9*info.nTried());
    std::cout << "Using FxFx cross section recipe: xs = "<< m_sigmaTotal << " / " << 1e9*info.nTried() << std::endl;
  }
 
  if( ! m_athenaTool.empty()){
    double xsmod = m_athenaTool->CrossSectionScaleFactor();
    ATH_MSG_DEBUG("Multiplying cross-section by Pythia Modifier tool factor " << xsmod );
    xs *= xsmod;
  }
 
  xs *= 1000. * 1000.;//convert to nb
 
  std::cout << "MetaData: cross-section (nb)= " << xs <<std::endl;
  std::cout << "MetaData: generator= Pythia 8." << std::string(py8version()) <<std::endl;
 
  if(m_doLHE3Weights || m_weightIDs.size()>1 ){
    std::cout<<"MetaData: weights = ";
    for (const auto& w : m_weightNames ) std::cout<< w <<" | ";
    std::cout<<std::endl;
  }
 
  if (m_computeEfficiency){
        if (info.nTried()>0) ATH_MSG_INFO("Pythia8 efficiency (nAccepted/nTried %) = " << info.nAccepted()*100./info.nTried());
        else ATH_MSG_INFO("Pythia8 efficiency cannot be computed, nTried <=0");
  }
 
if(m_useRndmGenSvc){
  ATH_MSG_INFO("Number of random numbers produced  " << m_atlasRndmEngine->getRNCalls());
  if (m_useReseed) ATH_MSG_INFO("Each event was reseeded ");
  else  ATH_MSG_INFO("Events were not reseeded ");
}      
 
  return StatusCode::SUCCESS;
}

genInitialize()

StatusCode Pythia8_i::genInitialize ( )

virtual

For initializing the generator, if required.

Reimplemented from GenModule.

Reimplemented in MultiPy8Pileup, and Pythia8B_i.

Definition at line 98 of file Pythia8_i.cxx.

                                    {
 
  ATH_MSG_DEBUG("Pythia8_i from genInitialize()");
 
  ATH_MSG_INFO("XML Path is " + xmlpath());
  m_pythia = std::make_unique<Pythia8::Pythia> (xmlpath());
#ifdef HEPMC3
  m_runinfo = std::make_shared<HepMC3::GenRunInfo>();
  struct HepMC3::GenRunInfo::ToolInfo generator={std::string("Pythia8"),py8version(),std::string("Used generator")};
  m_runinfo->tools().push_back(std::move(generator));   
#endif
 
  bool canInit = true;
 
  m_version = m_pythia->settings.parm("Pythia:versionNumber");
 
  s_pythia_stream = "PYTHIA8_INIT";
 
  // By default add "nominal" to the list of shower weight names
  m_showerWeightNames = m_showerWeightNamesProp.value();
  m_showerWeightNames.insert(m_showerWeightNames.begin(), "nominal");
 
  // We do explicitly set tune 4C, since it is the starting point for many other tunes
  // Tune 4C for pp collisions
  m_pythia->readString("Tune:pp = 5");
 
  // also use CTEQ6L1 from LHAPDF 6 by default
  // can be over-written using JO
  m_pythia->readString("PDF:pSet= LHAPDF6:cteq6l1");
 
  // switch off verbose event print out
  m_pythia->readString("Next:numberShowEvent = 0");
 
  // Add flag to switch off from JO the Pythia8ToHepMC::print_inconsistency internal variable
  m_pythia->settings.addFlag("AthenaPythia8ToHepMC:print_inconsistency",true);
  
  // Revert the recoil strategy to the old default of 1, ie. 'recoil to color'
  // In 8.314, the default option was changed to 0, 'recoil to top' and we 
  // revert it back unless 'recoil to top' 
  // is explicitly needed for the samples 
  if (m_version > 8.313) m_pythia->readString("TimeShower:recoilStrategyRF = 1");
 
  // Add UserHooks first because these potentially add new settings that must exist prior to parsing commands
 
  for(const auto &hook: m_userHooks){
    ATH_MSG_INFO("Adding user hook " + hook + ".");
    bool canSetHook = true;
    if (hook == "SuppressSmallPT") {
        m_SuppressSmallPT = new Pythia8::SuppressSmallPT(m_pt0timesMPI,m_numberAlphaS,m_sameAlphaSAsMPI);
        canSetHook=m_pythia->setUserHooksPtr(PYTHIA8_PTRWRAP(m_SuppressSmallPT));
}
    else {
      m_userHooksPtrs.push_back(PYTHIA8_PTRWRAP(Pythia8_UserHooks::UserHooksFactory::create(hook)) );
      canSetHook = m_pythia->addUserHooksPtr(m_userHooksPtrs.back());
}
    if(!canSetHook){
      ATH_MSG_ERROR("Unable to set requested user hook.");
      ATH_MSG_ERROR("Pythia 8 initialisation will FAIL!");
      canInit=false;
    }
  }
 
  for(const std::pair<const std::string, double> &param : Pythia8_UserHooks::UserHooksFactory::userSettings<double>()){
    m_pythia->settings.addParm(param.first, param.second, false, false, 0., 0.);
  }
 
  for(const std::pair<const std::string, int> &param : Pythia8_UserHooks::UserHooksFactory::userSettings<int>()){
    m_pythia->settings.addMode(param.first, param.second, false, false, 0., 0.);
  }
 
  for(const std::pair<const std::string, bool> &param : Pythia8_UserHooks::UserHooksFactory::userSettings<bool>()){
    m_pythia->settings.addFlag(param.first, param.second);
  }
 
  for(const std::pair<const std::string, std::string> &param : Pythia8_UserHooks::UserHooksFactory::userSettings<std::string>()){
    m_pythia->settings.addWord(param.first, param.second);
  }
 
  if( ! m_athenaTool.empty() ){
    if(m_athenaTool.retrieve().isFailure()){
      ATH_MSG_ERROR("Unable to retrieve Athena Tool for custom Pythia processing");
      return StatusCode::FAILURE;
    }
    else {
      StatusCode status = m_athenaTool->InitializePythiaInfo(*m_pythia);
      if(status != StatusCode::SUCCESS) return status;
    }
  }
 
  // Now apply the settings from the JO
  for(const std::string &cmd : m_commands){
 
    if(cmd.compare("")==0) continue;
    else if (cmd.find("Beams:id") != std::string::npos ) {
      ATH_MSG_ERROR("With command '" << cmd << "' you are trying to set a beam different from p: please use the Beam1/Beam2 properties instead:"); 
      ATH_MSG_ERROR("                               example:  genSeq.Pythia8.Beam1 = 'LEAD'");
      ATH_MSG_ERROR("                                         genSeq.Pythia8.Beam2 = 'ANTINEUTRON'");
      return StatusCode::FAILURE;
    }
    else if (cmd.find("Beams:frameType") != std::string::npos ) {
      m_override_transform_beamenergy = true;
      ATH_MSG_WARNING(" Found an explicit 'Beams:frameType' command: this will override transform beams momenta/energy parameters, regardless of its requested value. ");
    }
    
    bool read = m_pythia->readString(cmd);
 
    if(!read){
      ATH_MSG_ERROR("Pythia could not understand the command '"<< cmd<<"'");
      return StatusCode::FAILURE;
    }
  }
 
  PDGID beam1 = m_particleIDs[m_beam1];
  PDGID beam2 = m_particleIDs[m_beam2];
 
  ATH_MSG_INFO("Beam1 = "<<beam1);
  ATH_MSG_INFO("Beam2 = "<<beam2);
 
  if(beam1 == 0 || beam2 == 0){
    ATH_MSG_ERROR("Invalid beam particle!");
    return StatusCode::FAILURE;
  }
 
 
 
  if(m_useRndmGenSvc){
 
    ATH_MSG_INFO(" !!!!!!!!!!!!  WARNING ON PYTHIA RANDOM NUMBERS !!!!!!!!!! ");
    ATH_MSG_INFO("           THE ATHENA SERVICE AthRNGenSvc IS USED.");
    ATH_MSG_INFO(" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ");
 
    m_atlasRndmEngine = std::make_shared<customRndm>();
    CLHEP::HepRandomEngine* rndmEngine = getRandomEngineDuringInitialize(s_pythia_stream, m_randomSeed, m_dsid); // NOT THREAD-SAFE
    m_atlasRndmEngine->init(rndmEngine);
#if PYTHIA_VERSION_INTEGER >= 8310
    m_pythia->setRndmEnginePtr(m_atlasRndmEngine);
#else
    m_pythia->setRndmEnginePtr(m_atlasRndmEngine.get());
#endif
    s_pythia_stream = "PYTHIA8";
  }else{
    ATH_MSG_INFO(" !!!!!!!!!!!!  WARNING ON PYTHIA RANDOM NUMBERS !!!!!!!!!! ");
    ATH_MSG_INFO("    THE STANDARD PYTHIA8 RANDOM NUMBER SERVICE IS USED.");
    ATH_MSG_INFO("    THE ATHENA SERVICE AthRNGSvc IS ***NOT*** USED.");
    ATH_MSG_INFO(" !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ");
  }
 
  if(m_userProcess != ""){
    m_procPtr = Pythia8_UserProcess::UserProcessFactory::create(m_userProcess);
  }
 
 
 
  if(m_userResonances.value() != ""){
 
    std::vector<std::string> resonanceArgs;
 
    for (auto&& part : std::views::split(m_userResonances.value(), ':')) resonanceArgs.emplace_back(part.begin(), part.end());
    if(resonanceArgs.size() != 2){
      ATH_MSG_ERROR("Cannot Understand UserResonance job option!");
      ATH_MSG_ERROR("You should specify it as a 'name:id1,id2,id3...'");
      ATH_MSG_ERROR("Where name is the name of your UserResonance, and id1,id2,id3 are a comma separated list of PDG IDs to which it is applied");
      canInit = false;
    }
    std::vector<std::string> resonanceIds;
    for (auto&& part : std::views::split(resonanceArgs.back(), ',')) resonanceIds.emplace_back(part.begin(), part.end());
    if(resonanceIds.size()==0){
      ATH_MSG_ERROR("You did not specifiy any PDG ids to which your user resonance width should be applied!");
      ATH_MSG_ERROR("You should specify a list as 'name:id1,id2,id3...'");
      ATH_MSG_ERROR("Where name is the name of your UserResonance, and id1,id2,id3 are a comma separated list of PDG IDs to which it is applied");
      canInit=false;
    }
 
    for(std::vector<std::string>::const_iterator sId = resonanceIds.begin();
        sId != resonanceIds.end(); ++sId){
      int idResIn = 0;
      auto result = std::from_chars(sId->data(), sId->data() + sId->size(), idResIn);
      if (result.ec != std::errc()) {
          ATH_MSG_ERROR("Invalid resonance ID: " + *sId);
      }
      m_userResonancePtrs.push_back(Pythia8_UserResonance::UserResonanceFactory::create(resonanceArgs.front(), idResIn));
    }
 
    for(std::shared_ptr<Pythia8::ResonanceWidths>& resonance : m_userResonancePtrs) {
#if PYTHIA_VERSION_INTEGER >= 8310
      m_pythia->setResonancePtr(resonance);
#else
      m_pythia->setResonancePtr(resonance.get());
#endif
    }
 
  }
 
  if(m_particleDataFile != "") {
    if(!m_pythia->particleData.reInit(m_particleDataFile, true)){
      ATH_MSG_ERROR("Unable to read requested particle data table: " + m_particleDataFile + " !!");
      ATH_MSG_ERROR("Pythia 8 initialisation will FAIL!");
      canInit = false;
    }
  }
 
  if(m_lheFile != ""){
    if(m_procPtr){
      ATH_MSG_ERROR("Both LHE file and user process have been specified");
      ATH_MSG_ERROR("LHE input does not make sense with a user process!");
      canInit = false;
    }
 
    canInit = canInit && m_pythia->readString("Beams:frameType = 4");
    canInit = canInit && m_pythia->readString("Beams:LHEF = " + m_lheFile);
    if(!canInit){
      ATH_MSG_ERROR("Unable to read requested LHE file: " + m_lheFile + " !");
      ATH_MSG_ERROR("Pythia 8 initialisation will FAIL!");
    }
  }else{
    if (!m_override_transform_beamenergy){
      canInit = canInit && m_pythia->readString("Beams:frameType = 1");
      canInit = canInit && m_pythia->readString("Beams:eCM = " + std::to_string(m_collisionEnergy));
    }
    canInit = canInit && m_pythia->readString("Beams:idA = " + std::to_string(beam1));
    canInit = canInit && m_pythia->readString("Beams:idB = " + std::to_string(beam2));
  }
 
  if(m_procPtr){
#if PYTHIA_VERSION_INTEGER >= 8310
    if(!m_pythia->setSigmaPtr(m_procPtr))
#else
    if(!m_pythia->setSigmaPtr(m_procPtr.get()))
#endif
    {
      ATH_MSG_ERROR("Unable to set requested user process: " + m_userProcess + " !!");
      ATH_MSG_ERROR("Pythia 8 initialisation will FAIL!");
      canInit = false;
    }
  }
 
  StatusCode returnCode = StatusCode::SUCCESS;
 
  m_pythia->particleData.listXML(m_outputParticleDataFile.value().substr(0,m_outputParticleDataFile.value().find("xml"))+"orig.xml");
  m_pythia->settings.writeFile("Settings_before.log",true);
 
  if(canInit){
    canInit = m_pythia->init();
  }
 
  if(!canInit){
    returnCode = StatusCode::FAILURE;
    ATH_MSG_ERROR(" *** Unable to initialise Pythia !! ***");
  }
 
  m_pythia->particleData.listXML(m_outputParticleDataFile);
  m_pythia->settings.writeFile("Settings_after.log",true);
 
  //counter for event failures;
  m_failureCount = 0;
 
  m_internal_event_number = 0;
 
  // Set set_print_inconsistency to Athena corresponding flag (allowing to change it from JO)
  m_pythiaToHepMC.set_print_inconsistency(  m_pythia->settings.flag("AthenaPythia8ToHepMC:print_inconsistency")  );
 
  m_pythiaToHepMC.set_store_pdf(true);
  m_pythiaToHepMC.set_store_weights(false);
 
  return returnCode;
}

genuserInitialize()

virtual StatusCode GenModule::genuserInitialize ( )

inlinevirtualinherited

For initialization of user code, if required. Called after genInitialize.

Reimplemented in Pythia8B_i.

Definition at line 64 of file GenModule.h.

{ return StatusCode::SUCCESS; }

getRandomEngine() [1/2]

CLHEP::HepRandomEngine * GenModule::getRandomEngine ( const std::string & streamName, const EventContext & ctx ) const

protectedinherited

Definition at line 34 of file GenModule.cxx.

{
  ATHRNG::RNGWrapper* rngWrapper = m_rndmSvc->getEngine(this, streamName);
  std::string rngName = name()+streamName;
  rngWrapper->setSeed( rngName, ctx );
  return rngWrapper->getEngine(ctx);
}

getRandomEngine() [2/2]

CLHEP::HepRandomEngine * GenModule::getRandomEngine ( const std::string & streamName, unsigned long int randomSeedOffset, const EventContext & ctx ) const

protectedinherited

Definition at line 44 of file GenModule.cxx.

{
  ATHRNG::RNGWrapper* rngWrapper = m_rndmSvc->getEngine(this, streamName);
  rngWrapper->setSeed( streamName, ctx.slot(), randomSeedOffset, ctx.eventID().run_number() );
  return rngWrapper->getEngine(ctx);
}

getRandomEngineDuringInitialize()

CLHEP::HepRandomEngine * GenModule::getRandomEngineDuringInitialize ( const std::string & streamName, unsigned long int randomSeedOffset, unsigned int conditionsRun = 1, unsigned int lbn = 1 ) const

protectedinherited

Definition at line 53 of file GenModule.cxx.

{
  const size_t slot=0;
  EventContext ctx;
  ctx.setSlot( slot );
  ctx.setEventID (EventIDBase (conditionsRun,
               EventIDBase::UNDEFEVT,  // event
               EventIDBase::UNDEFNUM,  // timestamp
               EventIDBase::UNDEFNUM,  // timestamp ns
               lbn));
  Atlas::setExtendedEventContext(ctx,
                                 Atlas::ExtendedEventContext( evtStore()->hiveProxyDict(),
                                                              conditionsRun) );
  return getRandomEngine(streamName, randomSeedOffset, ctx);
}

GeVToMeV()

void GenBase::GeVToMeV ( HepMC::GenEvent * evt )

protectedinherited

Scale event energies/momenta by x 1000.

Todo

Add HepMC units awareness and do it differently when HepMC provides this functionality directly (and reference-based FourVector accessors)

Definition at line 58 of file GenBase.cxx.

                                         {
  for (HepMC::GenEvent::particle_iterator p = evt->particles_begin(); p != evt->particles_end(); ++p) {
    const HepMC::FourVector fv((*p)->momentum().px() * 1000,
                               (*p)->momentum().py() * 1000,
                               (*p)->momentum().pz() * 1000,
                               (*p)->momentum().e()  * 1000);
    (*p)->set_momentum(fv);
    (*p)->set_generated_mass(1000 * (*p)->generated_mass());
  }
}

initialize()

StatusCode GenModule::initialize ( )

virtualinherited

Reimplemented from GenBase.

Definition at line 21 of file GenModule.cxx.

                                 {
  // Base class initializations
  CHECK(GenBase::initialize());
  // Get the random number service
  CHECK(m_rndmSvc.retrieve());
  // Get the incident service
  CHECK(m_incidentSvc.retrieve());
  CHECK(genInitialize());
  CHECK(genuserInitialize());
  return StatusCode::SUCCESS;
}

inputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< Algorithm > >::inputHandles ( ) const

overridevirtualinherited

Return this algorithm's input handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

MeVToGeV()

void GenBase::MeVToGeV ( HepMC::GenEvent * evt )

protectedinherited

Scale event energies/momenta by x 1/1000.

Definition at line 68 of file GenBase.cxx.

                                         {
  for (HepMC::GenEvent::particle_iterator p = evt->particles_begin(); p != evt->particles_end(); ++p) {
    const HepMC::FourVector fv((*p)->momentum().px() / 1000,
                               (*p)->momentum().py() / 1000,
                               (*p)->momentum().pz() / 1000,
                               (*p)->momentum().e()  / 1000);
    (*p)->set_momentum(fv);
    (*p)->set_generated_mass((*p)->generated_mass() / 1000);
  }
}

mmTocm()

void GenBase::mmTocm ( HepMC::GenEvent * evt )

protectedinherited

Scale event lengths by x 1/10.

Definition at line 87 of file GenBase.cxx.

                                       {
  for (HepMC::GenEvent::vertex_iterator vtx = evt->vertices_begin(); vtx != evt->vertices_end(); ++vtx) {
    const HepMC::FourVector fv((*vtx)->position().x() / 10,
                               (*vtx)->position().y() / 10,
                               (*vtx)->position().z() / 10,
                               (*vtx)->position().t() / 10);
    (*vtx)->set_position(fv);
  }
}

msg()

MsgStream & AthCommonMsg< Algorithm >::msg ( ) const

inlineinherited

Definition at line 24 of file AthCommonMsg.h.

                                {
    return this->msgStream();
  }

msgLvl()

bool AthCommonMsg< Algorithm >::msgLvl ( const MSG::Level lvl ) const

inlineinherited

Definition at line 30 of file AthCommonMsg.h.

                                               {
    return this->msgLevel(lvl);
  }

outputHandles()

virtual std::vector< Gaudi::DataHandle * > AthCommonDataStore< AthCommonMsg< Algorithm > >::outputHandles ( ) const

overridevirtualinherited

Return this algorithm's output handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

particleData()

const HepPDT::ParticleData * GenBase::particleData ( int pid ) const

inlineinherited

Access an element in the particle data table.

Definition at line 126 of file GenBase.h.

                                                        {
    return pdt().particle(HepPDT::ParticleID(std::abs(pid)));
  }

particleTable()

const HepPDT::ParticleDataTable & GenBase::particleTable ( ) const

inlineinherited

Get a particle data table.

Definition at line 118 of file GenBase.h.

                                                       {
    return *(m_ppSvc->PDT());
  }

partPropSvc()

const ServiceHandle< IPartPropSvc > GenBase::partPropSvc ( ) const

inlineinherited

Access the particle property service.

Definition at line 113 of file GenBase.h.

                                                        {
    return m_ppSvc;
  }

pdt()

const HepPDT::ParticleDataTable & GenBase::pdt ( ) const

inlineinherited

Shorter alias to get a particle data table.

Definition at line 123 of file GenBase.h.

{ return particleTable(); }

pythia_stream()

const std::string & Pythia8_i::pythia_stream ( )

static

Definition at line 715 of file Pythia8_i.cxx.

                                          {
  return s_pythia_stream;
}

pythiaVersion()

double Pythia8_i::pythiaVersion

(

)

const

Definition at line 710 of file Pythia8_i.cxx.

                                    {
  return m_version;
}

renounce()

std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void > AthCommonDataStore< AthCommonMsg< Algorithm > >::renounce ( T & h )

inlineprotectedinherited

Definition at line 380 of file AthCommonDataStore.h.

  {
    h.renounce();
    PBASE::renounce (h);
  }

renounceArray()

void AthCommonDataStore< AthCommonMsg< Algorithm > >::renounceArray ( SG::VarHandleKeyArray & handlesArray )

inlineprotectedinherited

remove all handles from I/O resolution

Definition at line 364 of file AthCommonDataStore.h.

                                                          {
    handlesArray.renounce();
  }

s_allowedTunes()

int Pythia8_i::s_allowedTunes ( double version )

staticprivate

sysInitialize()

StatusCode AthAlgorithm::sysInitialize ( )

overridevirtualinherited

Override sysInitialize.

Override sysInitialize from the base class.

Loop through all output handles, and if they're WriteCondHandles, automatically register them and this Algorithm with the CondSvc

Scan through all outputHandles, and if they're WriteCondHandles, register them with the CondSvc

Reimplemented from AthCommonDataStore< AthCommonMsg< Algorithm > >.

Reimplemented in AthAnalysisAlgorithm, AthFilterAlgorithm, AthHistogramAlgorithm, and PyAthena::Alg.

Definition at line 66 of file AthAlgorithm.cxx.

                                       {
  StatusCode sc=AthCommonDataStore<AthCommonMsg<Algorithm>>::sysInitialize();
 
  if (sc.isFailure()) {
    return sc;
  }
  ServiceHandle<ICondSvc> cs("CondSvc",name());
  for (auto h : outputHandles()) {
    if (h->isCondition() && h->mode() == Gaudi::DataHandle::Writer) {
      // do this inside the loop so we don't create the CondSvc until needed
      if ( cs.retrieve().isFailure() ) {
        ATH_MSG_WARNING("no CondSvc found: won't autoreg WriteCondHandles");
        return StatusCode::SUCCESS;
      }
      if (cs->regHandle(this,*h).isFailure()) {
        sc = StatusCode::FAILURE;
        ATH_MSG_ERROR("unable to register WriteCondHandle " << h->fullKey()
                      << " with CondSvc");
      }
    }
  }
  return sc;
}

sysStart()

virtual StatusCode AthCommonDataStore< AthCommonMsg< Algorithm > >::sysStart ( )

overridevirtualinherited

Handle START transition.

We override this in order to make sure that conditions handle keys can cache a pointer to the conditions container.

updateVHKA()

void AthCommonDataStore< AthCommonMsg< Algorithm > >::updateVHKA ( Gaudi::Details::PropertyBase & )

inlineinherited

Definition at line 308 of file AthCommonDataStore.h.

                                               {
    // debug() << "updateVHKA for property " << p.name() << " " << p.toString() 
    //         << "  size: " << m_vhka.size() << endmsg;
    for (auto &a : m_vhka) {
      std::vector<SG::VarHandleKey*> keys = a->keys();
      for (auto k : keys) {
        k->setOwner(this);
      }
    }
  }

useReseed()

bool Pythia8_i::useReseed ( ) const

inlineprotected

Definition at line 90 of file Pythia8_i.h.

{return m_useReseed; }

useRndmGenSvc()

bool Pythia8_i::useRndmGenSvc ( ) const

inlineprotected

Definition at line 89 of file Pythia8_i.h.

{ return m_useRndmGenSvc; }

xmlpath()

std::string Pythia8_i::xmlpath ( )

static

Definition at line 720 of file Pythia8_i.cxx.

                            {
 
  
  std::string foundpath = "";
 
// Try to find the xmldoc directory using PathResolver:
  foundpath = PathResolverFindCalibDirectory( "Pythia8/xmldoc" );
 
  return foundpath;
}

Member Data Documentation

m_athenaTool

PublicToolHandle<IPythia8Custom> Pythia8_i::m_athenaTool {this, "CustomInterface", ""}

private

Definition at line 170 of file Pythia8_i.h.

{this, "CustomInterface", ""};

m_atlasRndmEngine

std::shared_ptr<customRndm> Pythia8_i::m_atlasRndmEngine {}

protected

Definition at line 97 of file Pythia8_i.h.

{};

m_beam1

StringProperty Pythia8_i::m_beam1 {this, "Beam1", "PROTON"}

private

Definition at line 125 of file Pythia8_i.h.

{this, "Beam1", "PROTON"};

m_beam2

StringProperty Pythia8_i::m_beam2 {this, "Beam2", "PROTON"}

private

Definition at line 126 of file Pythia8_i.h.

{this, "Beam2", "PROTON"};

m_collisionEnergy

DoubleProperty Pythia8_i::m_collisionEnergy {this, "CollisionEnergy", 14000.0}

private

Definition at line 122 of file Pythia8_i.h.

{this, "CollisionEnergy", 14000.0};

m_commands

StringArrayProperty Pythia8_i::m_commands {this, "Commands", {} }

private

Definition at line 116 of file Pythia8_i.h.

{this, "Commands", {} };

m_computeEfficiency

BooleanProperty Pythia8_i::m_computeEfficiency {this, "computeEfficiency", false}

private

Definition at line 133 of file Pythia8_i.h.

{this, "computeEfficiency", false};

m_conversion

double Pythia8_i::m_conversion {1.}

private

Definition at line 137 of file Pythia8_i.h.

{1.};

m_detStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< Algorithm > >::m_detStore

privateinherited

Pointer to StoreGate (detector store by default)

Definition at line 393 of file AthCommonDataStore.h.

m_doCKKWLAcceptance

BooleanProperty Pythia8_i::m_doCKKWLAcceptance {this, "CKKWLAcceptance", false}

private

Definition at line 131 of file Pythia8_i.h.

{this, "CKKWLAcceptance", false};

m_doFxFxXS

BooleanProperty Pythia8_i::m_doFxFxXS {this, "FxFxXS", false}

private

Definition at line 132 of file Pythia8_i.h.

{this, "FxFxXS", false};

m_doLHE3Weights

bool Pythia8_i::m_doLHE3Weights {false}

private

Definition at line 165 of file Pythia8_i.h.

{false};

m_dsid

IntegerProperty Pythia8_i::m_dsid {this, "Dsid", 999999, "Dataset ID number"}

protected

Definition at line 101 of file Pythia8_i.h.

{this, "Dsid", 999999, "Dataset ID number"};

m_enhanceWeight

double Pythia8_i::m_enhanceWeight {1.0}

private

Definition at line 162 of file Pythia8_i.h.

{1.0};

m_evtStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< Algorithm > >::m_evtStore

privateinherited

Pointer to StoreGate (event store by default)

Definition at line 390 of file AthCommonDataStore.h.

m_extendedExtraObjects

DataObjIDColl AthAlgorithm::m_extendedExtraObjects

privateinherited

Definition at line 79 of file AthAlgorithm.h.

m_failureCount

unsigned int Pythia8_i::m_failureCount {0}

private

Definition at line 139 of file Pythia8_i.h.

{0};

m_incidentSvc

ServiceHandle<IIncidentSvc> GenModule::m_incidentSvc {this, "IncidentSvc", "IncidentSvc"}

privateinherited

Handle on the incident service.

Definition at line 101 of file GenModule.h.

{this, "IncidentSvc", "IncidentSvc"};

m_internal_event_number

int Pythia8_i::m_internal_event_number {0}

private

Definition at line 112 of file Pythia8_i.h.

{0};

m_isAfterburner

BooleanProperty GenModule::m_isAfterburner {this, "IsAfterburner", false, "Set true if generator modifies existing events rather than creating new ones"}

protectedinherited

Flag for normal vs. afterburner generators.

Definition at line 87 of file GenModule.h.

{this, "IsAfterburner", false, "Set true if generator modifies existing events rather than creating new ones"};

m_lheFile

StringProperty Pythia8_i::m_lheFile {this, "LHEFile", ""}

private

Definition at line 129 of file Pythia8_i.h.

{this, "LHEFile", ""};

m_maxFailures

UnsignedIntegerProperty Pythia8_i::m_maxFailures {this, "MaxFailures", 10}

protected

Definition at line 94 of file Pythia8_i.h.

{this, "MaxFailures", 10};

m_mcEventKey

std::string GenBase::m_mcEventKey {}

protectedinherited

StoreGate key for the MC event collection (defaults to GEN_EVENT)

Definition at line 137 of file GenBase.h.

{};

m_mcevents_const

SG::ReadHandleKey<McEventCollection> GenBase::m_mcevents_const { this, "McEventKey", "GEN_EVENT", "StoreGate key of the MC event collection" }

privateinherited

Const handle to the MC event collection.

Definition at line 163 of file GenBase.h.

{ this, "McEventKey", "GEN_EVENT", "StoreGate key of the MC event collection" };

m_mergingWeight

double Pythia8_i::m_mergingWeight {1.0}

private

Definition at line 161 of file Pythia8_i.h.

{1.0};

m_mkMcEvent

BooleanProperty GenBase::m_mkMcEvent {this, "MakeMcEvent", false, "Create a new MC event collection if it doesn't exist"}

protectedinherited

Flag to determine if a new MC event collection should be made if it doesn't exist.

Definition at line 139 of file GenBase.h.

{this, "MakeMcEvent", false, "Create a new MC event collection if it doesn't exist"};

m_nAccepted

double Pythia8_i::m_nAccepted {0.}

private

Definition at line 134 of file Pythia8_i.h.

{0.};

m_nMerged

double Pythia8_i::m_nMerged {0.}

private

Definition at line 135 of file Pythia8_i.h.

{0.};

m_numberAlphaS

DoubleProperty Pythia8_i::m_numberAlphaS {this,"numberAlphaS", 3.0}

protected

Definition at line 105 of file Pythia8_i.h.

{this,"numberAlphaS", 3.0};

m_outputParticleDataFile

StringProperty Pythia8_i::m_outputParticleDataFile {this, "OutputParticleData", "ParticleData.local.xml"}

private

Definition at line 159 of file Pythia8_i.h.

{this, "OutputParticleData", "ParticleData.local.xml"};

m_override_transform_beamenergy

bool Pythia8_i::m_override_transform_beamenergy {false}

private

Definition at line 127 of file Pythia8_i.h.

{false};

m_particleDataFile

StringProperty Pythia8_i::m_particleDataFile {this, "ParticleData", ""}

private

Definition at line 158 of file Pythia8_i.h.

{this, "ParticleData", ""};

m_particleIDs

std::map<std::string, PDGID> Pythia8_i::m_particleIDs

private

Definition at line 141 of file Pythia8_i.h.

m_ppSvc

ServiceHandle<IPartPropSvc> GenBase::m_ppSvc {this, "PartPropSvc", "PartPropSvc"}

privateinherited

Handle on the particle property service.

Definition at line 160 of file GenBase.h.

{this, "PartPropSvc", "PartPropSvc"};

m_procPtr

std::shared_ptr<Pythia8::Sigma2Process> Pythia8_i::m_procPtr {}

private

Definition at line 148 of file Pythia8_i.h.

{};

m_pt0timesMPI

DoubleProperty Pythia8_i::m_pt0timesMPI {this,"pT0timesMPI", 1.0}

protected

Definition at line 104 of file Pythia8_i.h.

{this,"pT0timesMPI", 1.0};

m_pythia

std::unique_ptr<Pythia8::Pythia> Pythia8_i::m_pythia {}

protected

Definition at line 92 of file Pythia8_i.h.

{};

m_pythiaToHepMC

HepMC::Pythia8ToHepMC Pythia8_i::m_pythiaToHepMC

protected

Definition at line 93 of file Pythia8_i.h.

m_randomSeed

IntegerProperty GenModule::m_randomSeed {this, "RandomSeed", 1234567, "Random seed for the built-in random engine"}

protectedinherited

Seed for random number engine.

Definition at line 84 of file GenModule.h.

{this, "RandomSeed", 1234567, "Random seed for the built-in random engine"}; // FIXME make this into an unsigned long int?

m_rndmSvc

ServiceHandle<IAthRNGSvc> GenModule::m_rndmSvc {this, "RndmSvc", "AthRNGSvc"}

privateinherited

Data members.

Definition at line 99 of file GenModule.h.

{this, "RndmSvc", "AthRNGSvc"};

m_sameAlphaSAsMPI

BooleanProperty Pythia8_i::m_sameAlphaSAsMPI {this,"useSameAlphaSasMPI", false}

protected

Definition at line 106 of file Pythia8_i.h.

{this,"useSameAlphaSasMPI", false};

m_saveLHE

BooleanProperty Pythia8_i::m_saveLHE {this, "SaveLHERecord", false}

private

Definition at line 172 of file Pythia8_i.h.

{this, "SaveLHERecord", false};

m_seeds

std::vector<long int> Pythia8_i::m_seeds {}

private

Definition at line 143 of file Pythia8_i.h.

{};

m_showerWeightNames

std::vector<std::string> Pythia8_i::m_showerWeightNames {"nominal"}

private

Definition at line 167 of file Pythia8_i.h.

{"nominal"};

m_showerWeightNamesProp

StringArrayProperty Pythia8_i::m_showerWeightNamesProp {this, "ShowerWeightNames", {} }

private

Definition at line 168 of file Pythia8_i.h.

{this, "ShowerWeightNames", {} };

m_sigmaTotal

double Pythia8_i::m_sigmaTotal {0.}

private

Definition at line 136 of file Pythia8_i.h.

{0.};

m_SuppressSmallPT

Pythia8::SuppressSmallPT* Pythia8_i::m_SuppressSmallPT {}

private

Definition at line 176 of file Pythia8_i.h.

{};

m_useLHAPDF

BooleanProperty Pythia8_i::m_useLHAPDF {this, "UseLHAPDF", true}

private

Definition at line 156 of file Pythia8_i.h.

{this, "UseLHAPDF", true};

m_useReseed

BooleanProperty Pythia8_i::m_useReseed {this,"useReseed", false}

protected

Definition at line 99 of file Pythia8_i.h.

{this,"useReseed", false};

m_userHooks

StringArrayProperty Pythia8_i::m_userHooks {this, "UserHooks", {} }

protected

Definition at line 102 of file Pythia8_i.h.

{this, "UserHooks", {} };

m_userHooksPtrs

std::vector<UserHooksPtrType> Pythia8_i::m_userHooksPtrs {}

private

Definition at line 150 of file Pythia8_i.h.

{};

m_userModes

std::vector<std::string> Pythia8_i::m_userModes

private

Definition at line 118 of file Pythia8_i.h.

m_useRndmGenSvc

BooleanProperty Pythia8_i::m_useRndmGenSvc {this, "useRndmGenSvc", true, "the max number of consecutive failures"}

protected

Definition at line 96 of file Pythia8_i.h.

{this, "useRndmGenSvc", true, "the max number of consecutive failures"};

m_userParams

std::vector<std::string> Pythia8_i::m_userParams

private

Definition at line 117 of file Pythia8_i.h.

m_userProcess

StringProperty Pythia8_i::m_userProcess {this, "UserProcess", ""}

private

Definition at line 145 of file Pythia8_i.h.

{this, "UserProcess", ""};

m_userResonancePtrs

std::vector<std::shared_ptr<Pythia8::ResonanceWidths> > Pythia8_i::m_userResonancePtrs

private

Definition at line 154 of file Pythia8_i.h.

m_userResonances

StringProperty Pythia8_i::m_userResonances {this, "UserResonances", ""}

private

Definition at line 152 of file Pythia8_i.h.

{this, "UserResonances", ""};

m_varHandleArraysDeclared

bool AthCommonDataStore< AthCommonMsg< Algorithm > >::m_varHandleArraysDeclared

privateinherited

Definition at line 399 of file AthCommonDataStore.h.

m_version

double Pythia8_i::m_version {-1.}

private

Definition at line 114 of file Pythia8_i.h.

{-1.};

m_vhka

std::vector<SG::VarHandleKeyArray*> AthCommonDataStore< AthCommonMsg< Algorithm > >::m_vhka

privateinherited

Definition at line 398 of file AthCommonDataStore.h.

m_weightCommands

std::vector<std::string> Pythia8_i::m_weightCommands {}

private

Definition at line 166 of file Pythia8_i.h.

{};

m_weightIDs

std::vector<std::string> Pythia8_i::m_weightIDs {}

private

Definition at line 163 of file Pythia8_i.h.

{};

m_weightNames

std::vector<std::string> Pythia8_i::m_weightNames {}

private

Definition at line 164 of file Pythia8_i.h.

{};

---

The documentation for this class was generated from the following files:

• Pythia8_i.h
• Pythia8_i.cxx