int main(int argc, char** argv)
{
int nEvents = atoi(argv[1]);
//-----Pythia setup-----
Pythia pythia;
//---general setup
pythia.readString("Random:seed = 0");
pythia.readString("Random:setSeed = on");
pythia.readString("Beams:idA = 2212");
pythia.readString("Beams:idB = 2212");
pythia.readString("Beams:eA = 7000.");
pythia.readString("Beams:eB = 7000.");
pythia.readString("Beams:eCM = 14000.");
pythia.readString("HadronLevel:Hadronize = on");
//---CMS tuned min bias
pythia.readString("SoftQCD:nonDiffractive = on");
pythia.readString("SoftQCD:singleDiffractive = on");
pythia.readString("SoftQCD:doubleDiffractive = on");
pythia.readString("Tune:ee = 3");
pythia.readString("Tune:pp = 15");
//---Pythia initialization
pythia.init();
string outFile = "/afs/cern.ch/user/s/spigazzi/work/VBS4TP/MC_data/minBias/minBias_14TeV_";
outFile += argv[1];
outFile += "_";
outFile += argv[2];
outFile += ".hepmc";
HepMC::IO_GenEvent hepmc_file_out(outFile, std::ios::out);
HepMC::Pythia8ToHepMC ToHepMC;
for (int iEvent = 0; iEvent < nEvents; ++iEvent)
{
if(iEvent%(nEvents/10) == 0)
{
cout << "Events: " << iEvent << endl;
}
if(!pythia.next())
{
cout << "CRASH! ---> skip" << endl;
continue;
}
// construct new HepMC event setting units.
HepMC::GenEvent* hepmcevt = new HepMC::GenEvent(HepMC::Units::GEV, HepMC::Units::MM);
// fill the event including PDF infos
ToHepMC.fill_next_event( pythia, hepmcevt );
hepmc_file_out << hepmcevt;
delete hepmcevt;
}
// Done.
return 0;
}
int main(int argc, char * argv[]){
// declaring and initializing some variables. Most of them will be set according to command line options passed to the program after parsing of command line arguments. However, if Boost is not used, the only available command line option is the number of events to generate; other variables will use the values set below
std::size_t nevents = 0; // number of events to generate
std::string pythia_cfgfile = "Z2uubar.cmnd"; // name of PYTHIA cofiguration file
std::string output_filename = "Z2uubar.root"; // name of the output file
bool verbose = false; // increased verbosity switch
#ifdef USE_BOOST
try {
boost::program_options::options_description desc("Usage");
// defining command line options. See boost::program_options documentation for more details
desc.add_options()
("help", "produce this help message")
("nevents,n", boost::program_options::value<std::size_t>(&nevents), "number of events to generate")
("pythiacfg,P", boost::program_options::value<std::string>(&pythia_cfgfile)->default_value("Z2uubar.cmnd"), "PYTHIA config file")
("outfile,o", boost::program_options::value<std::string>(&output_filename)->default_value("Z2uubar.root"), "Output file")
("verbose,v", boost::program_options::bool_switch()->default_value(false), "Run with increased verbosity")
;
boost::program_options::variables_map vm;
boost::program_options::store(boost::program_options::parse_command_line(argc, argv, desc), vm);
boost::program_options::notify(vm);
if(vm.find("help") != vm.end() || argc < 2) {
std::cout << "Generator of inclusive events. Version " << Generator_VERSION_MAJOR << '.' << Generator_VERSION_MINOR << std::endl;
std::cout << desc << std::endl;
return EXIT_SUCCESS;
}
verbose = vm.at("verbose").as<bool>();
} catch(std::exception const & e) {
std::cout << e.what() << std::endl;
return EXIT_FAILURE;
}
#else
if(argc < 2) {
std::cout << "Generator of inclusive events. Version " << Generator_VERSION_MAJOR << '.' << Generator_VERSION_MINOR << std::endl;
std::cout << "Usage: " << argv[0] << " n, where \"n\" is a number of events to generate" << std::endl;
std::cout << "WARNING! This version of the generator does not use program options parser, which means that you are personally responsible for providing correct options to this program." << std::endl;
return EXIT_SUCCESS;
} else {
nevents = std::stoull(argv[1]);
}
#endif
auto start_time = std::chrono::system_clock::now();
auto last_timestamp = start_time;
if(verbose) {
std::cout << "PYTHIA config file: \"" << pythia_cfgfile << "\"" << std::endl << nevents << " events will be generated." << std:: endl;
}
if(verbose) {
std::cout << "Prepairing data store" << std::endl;
}
// prepairing event store
podio::EventStore store;
podio::ROOTWriter writer(output_filename, &store);
// registering collections
auto & evinfocoll = store.create<fcc::EventInfoCollection>("EventInfo");
auto & pcoll = store.create<fcc::MCParticleCollection>("GenParticle");
auto & vcoll = store.create<fcc::GenVertexCollection>("GenVertex");
writer.registerForWrite<fcc::EventInfoCollection>("EventInfo");
writer.registerForWrite<fcc::MCParticleCollection>("GenParticle");
writer.registerForWrite<fcc::GenVertexCollection>("GenVertex");
if(verbose) {
std::cout << "Initializing PYTHIA" << std::endl;
}
// initializing PYTHIA
Pythia8::Pythia pythia; // creating PYTHIA generator object
pythia.readFile(pythia_cfgfile); // reading settings from file
pythia.init(); // initializing PYTHIA generator
// Interface for conversion from Pythia8::Event to HepMC event.
HepMC::Pythia8ToHepMC ToHepMC;
std::size_t counter = 0; // number of "interesting" (that satisfy all the requirements) events generated so far
std::size_t total = 0; // total number of events generated so far
if(verbose) {
std::cout << "Starting to generate events" << std::endl;
}
std::map<std::size_t, std::size_t> stable_ptcs_count;
while(counter < nevents) {
if(pythia.next()) {
++total;
// creating HepMC event storage
HepMC::GenEvent * hepmcevt = new HepMC::GenEvent(HepMC::Units::GEV, HepMC::Units::MM);
// converting generated event to HepMC format
ToHepMC.fill_next_event(pythia, hepmcevt);
auto nstable = std::count_if(hepmcevt->particles_begin(), hepmcevt->particles_end(), [](HepMC::GenParticle const * const ptc_ptr) {return ptc_ptr->status() == 1;});
if(nstable <= 7) {
stable_ptcs_count[nstable]++;
++counter;
if(verbose && counter % 100 == 0) {
std::cout << counter << " events with with 7 or less particles in the final state have been generated (" << total << " total). " << std::chrono::duration<double>(std::chrono::system_clock::now() - last_timestamp).count() / 100 << "events / sec" << std::endl;
last_timestamp = std::chrono::system_clock::now();
}
// filling event info
auto evinfo = fcc::EventInfo();
evinfo.Number(counter); // Number takes int as its parameter, so here's a narrowing conversion (std::size_t to int). Should be safe unless we get 2^32 events or more. Then undefined behaviour
evinfocoll.push_back(evinfo);
// filling vertices
std::unordered_map<HepMC::GenVertex *, fcc::GenVertex> vtx_map;
for(auto iv = hepmcevt->vertices_begin(), endv = hepmcevt->vertices_end(); iv != endv; ++iv) {
auto vtx = fcc::GenVertex();
vtx.Position().X = (*iv)->position().x();
vtx.Position().Y = (*iv)->position().y();
vtx.Position().Z = (*iv)->position().z();
vtx.Ctau((*iv)->position().t());
vtx_map.emplace(*iv, vtx);
vcoll.push_back(vtx);
}
// filling particles
for(auto ip = hepmcevt->particles_begin(), endp = hepmcevt->particles_end(); ip != endp; ++ip) {
auto ptc = fcc::MCParticle();
auto & core = ptc.Core();
core.Type = (*ip)->pdg_id();
core.Status = (*ip)->status();
core.Charge = pythia.particleData.charge(core.Type); // PYTHIA returns charge as a double value (in case it's quark), so here's a narrowing conversion (double to int), but here it's safe
core.P4.Mass = (*ip)->momentum().m();
core.P4.Px = (*ip)->momentum().px();
core.P4.Py = (*ip)->momentum().py();
core.P4.Pz = (*ip)->momentum().pz();
auto prodvtx = vtx_map.find((*ip)->production_vertex());
if(prodvtx != vtx_map.end()) {
ptc.StartVertex(prodvtx->second);
}
auto endvtx = vtx_map.find((*ip)->end_vertex());
if(endvtx != vtx_map.end()) {
ptc.EndVertex(endvtx->second);
}
pcoll.push_back(ptc);
}
writer.writeEvent();
store.clearCollections();
}
// freeing resources
if(hepmcevt) {
delete hepmcevt;
hepmcevt = nullptr;
}
}
}
writer.finish();
std::cout << counter << " events with 7 or less particles in the final state have been generated (" << total << " total)." << std::endl;
for(auto const & nv : stable_ptcs_count) {
std::cout << std::setw(4) << std::right << nv.first << std::setw(4) << std::right << nv.second << "(" << static_cast<long double>(nv.second) * static_cast<long double>(100) / static_cast<long double>(total) << "%)" << std::endl;
}
auto elapsed_seconds = std::chrono::duration<double>(std::chrono::system_clock::now() - start_time).count();
std::cout << "Elapsed time: " << elapsed_seconds << " s (" << static_cast<long double>(counter) / static_cast<long double>(elapsed_seconds) << " events / s)" << std::endl;
return EXIT_SUCCESS;
}
int main(int argc, char* argv[]) {
char tune[25];
char seed[25];
//tune = "5";
//seed = "1370";
strncpy(tune,"5",25);
strncpy(seed,"1370",25);
//TODO this has gotten big enough to require real command line
//options, setup and option parser and do it right. Someone's going
//to get headaches over this very soon
//TODO add seeds back as an option, required for running on condor!
if(argc < 3)
{
cerr<<"Usage: "<<argv[0]<<" [config file] [out file] [conf lines ...]"<<endl;
return 1;
}
ifstream is(argv[1]);
if (!is) {
cerr << " Command-line file " << argv[1] << " was not found. \n"
<< " Program stopped! " << endl;
return 1;
}
cout<<"Configuring PYTHIA from "<<argv[1]<<endl;
cout<<"Writing output to "<<argv[2]<<endl;
vector<std::string> commandStrings;
for(int i=3; i < argc; i++){
commandStrings.push_back(string(argv[i]));
cout <<" Got Pythia command: "<<commandStrings.back()<<endl;
}
cout <<"Warning, command line arguments aren't type-checked, don't be stupid." <<endl;
HepMC::Pythia8ToHepMC ToHepMC;
HepMC::IO_GenEvent ascii_io(argv[2], std::ios::out);
char processline[128];
Pythia pythia;
pythia.readFile(argv[1]);
int nRequested = 100;
nRequested = pythia.mode("Main:numberOfEvents");
int nAbort = pythia.mode("Main:timesAllowErrors");
// Set the seed
pythia.readString("Random:setSeed = on");
sprintf(processline,"Random:seed = %s",seed);
pythia.readString(processline);
// Set the tune
sprintf(processline,"Tune:pp = %s",tune);
pythia.readString(processline);
for(std::vector<std::string>::const_iterator cmd = commandStrings.begin(); cmd != commandStrings.end(); ++cmd){
pythia.readString(*cmd);
}
pythia.init();
int iAbort = 0;
int nGenerated=0;
std::vector<int> requestedPdgId;//(3,0);
int pid=0;
bool keep=false;
while(nGenerated < nRequested) {
pid=0;
keep=false;
// requestedPdgId.clear();
if (!pythia.next()) {
if (pythia.info.atEndOfFile()) {
cout << " Aborted since reached end of Les Houches Event File\n";
break;
}
if (++iAbort < nAbort) continue;
cout << " Event generation aborted prematurely, owing to error!\n";
break;
}
for(int i=0; i < pythia.event.size(); i++){
pid=abs(pythia.event[i].id());
if(pid == 443 || // J\psi
pid == 10441 || //Chi_0
pid == 20443 || //Chi_1
pid == 445 || //Chi_2
pid == 100443
/*pid ==13 */){
keep=true;
break;
}
}
if(!keep){
continue;
}
HepMC::GenEvent* hepmcevt = new HepMC::GenEvent(HepMC::Units::GEV, HepMC::Units::MM);
ToHepMC.fill_next_event( pythia, hepmcevt );
ascii_io << hepmcevt ;
delete hepmcevt;
nGenerated++;
}
pythia.stat();
return 0;
}
StatusCode PythiaInterface::execute() {
/// Interface for conversion from Pythia8::Event to HepMC event.
HepMC::Pythia8ToHepMC *toHepMC = new HepMC::Pythia8ToHepMC();
/// Generate events. Quit if many failures in a raw
while ( !m_pythia->next() ) {
if (++iAbort > nAbort) {
IIncidentSvc* incidentSvc;
service("IncidentSvc",incidentSvc);
incidentSvc->fireIncident(Incident(name(),IncidentType::AbortEvent));
return Error ( "Event generation aborted prematurely, owing to error!" );
}
else{
warning () << "PythiaInterface Pythia8 abort : "<< iAbort << "/" <<nAbort<<std::endl;
}
}
/// reset the counter to count failed events in a raw
iAbort=0;
/*
for (int i = 0; i < m_pythia->event.size(); ++i){
//if (m_pythia->event[i].isFinal() && m_pythia->event[i].isCharged())
std::cout << "PythiaInterface : id : stat : px : py : pz : e : m : "
<< " " << m_pythia->event[i].id()
<< " " << m_pythia->event[i].status()
//<< " " << m_pythia->event[i].mother1()
//<< " " << m_pythia->event[i].mother2()
//<< " " << m_pythia->event[i].daughter1()
//<< " " << m_pythia->event[i].daughter2()
<< " " << m_pythia->event[i].px()
<< " " << m_pythia->event[i].py()
<< " " << m_pythia->event[i].pz()
<< " " << m_pythia->event[i].e()
<< " " << m_pythia->event[i].m()
<< std::endl;
}
*/
/// Construct new emhepmcevtpty HepMC event
HepMC::GenEvent* theEvent = new HepMC::GenEvent( HepMC::Units::GEV, HepMC::Units::MM);
toHepMC->fill_next_event(*m_pythia,theEvent);
//theEvent-> print();
/*
for (HepMC::GenEvent::particle_iterator ipart = theEvent->particles_begin() ;
ipart!=theEvent->particles_end(); ++ipart)
std::cout << "HepMC : id : stat : px : py : pz : e : m : "
<< (*ipart)->pdg_id()
<< " " << (*ipart)->status()
<< " " << (*ipart)->momentum().px()
<< " " << (*ipart)->momentum().py()
<< " " << (*ipart)->momentum().pz()
<< " " << (*ipart)->momentum().e()
<< " " << (*ipart)->momentum().m()
<< std::endl;
*/
m_hepmchandle.put(theEvent);
return StatusCode::SUCCESS;
}
