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limit the number of seeds, same as in CkfTrackCandidateMakerBase (backport of #38926) #38927

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merged 1 commit into from Aug 3, 2022
Merged

limit the number of seeds, same as in CkfTrackCandidateMakerBase (backport of #38926) #38927

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10 changes: 9 additions & 1 deletion RecoTracker/MkFit/plugins/MkFitSeedConverter.cc
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Expand Up @@ -60,6 +60,7 @@ class MkFitSeedConverter : public edm::global::EDProducer<> {
const edm::ESGetToken<MkFitGeometry, TrackerRecoGeometryRecord> mkFitGeomToken_;
const edm::ESGetToken<MagneticField, IdealMagneticFieldRecord> mfToken_;
const edm::EDPutTokenT<MkFitSeedWrapper> putToken_;
const unsigned int maxNSeeds_;
};

MkFitSeedConverter::MkFitSeedConverter(edm::ParameterSet const& iConfig)
Expand All @@ -69,13 +70,15 @@ MkFitSeedConverter::MkFitSeedConverter(edm::ParameterSet const& iConfig)
ttopoToken_{esConsumes<TrackerTopology, TrackerTopologyRcd>()},
mkFitGeomToken_{esConsumes<MkFitGeometry, TrackerRecoGeometryRecord>()},
mfToken_{esConsumes<MagneticField, IdealMagneticFieldRecord>()},
putToken_{produces<MkFitSeedWrapper>()} {}
putToken_{produces<MkFitSeedWrapper>()},
maxNSeeds_{iConfig.getParameter<unsigned int>("maxNSeeds")} {}

void MkFitSeedConverter::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
edm::ParameterSetDescription desc;

desc.add("seeds", edm::InputTag{"initialStepSeeds"});
desc.add("ttrhBuilder", edm::ESInputTag{"", "WithTrackAngle"});
desc.add("maxNSeeds", 500000U);

descriptions.addWithDefaultLabel(desc);
}
Expand All @@ -95,6 +98,11 @@ mkfit::TrackVec MkFitSeedConverter::convertSeeds(const edm::View<TrajectorySeed>
const MagneticField& mf,
const MkFitGeometry& mkFitGeom) const {
mkfit::TrackVec ret;
if (seeds.size() > maxNSeeds_) {
edm::LogError("TooManySeeds") << "Exceeded maximum number of seeds! maxNSeeds=" << maxNSeeds_
<< " nSeed=" << seeds.size();
return ret;
}
ret.reserve(seeds.size());

auto isPlusSide = [&ttopo](const DetId& detid) {
Expand Down