plugins/alpaka/PixelVertexProducerAlpaka.cc

0001 #include <alpaka/alpaka.hpp>
0002
0003 #include "Geometry/CommonTopologies/interface/SimplePixelTopology.h"
0004 #include "FWCore/Framework/interface/Frameworkfwd.h"
0005 #include "FWCore/Utilities/interface/StreamID.h"
0006 #include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
0007 #include "FWCore/ParameterSet/interface/ParameterSet.h"
0008 #include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
0009 #include "FWCore/Utilities/interface/InputTag.h"
0010 #include "HeterogeneousCore/AlpakaCore/interface/alpaka/EDPutToken.h"
0011 #include "HeterogeneousCore/AlpakaCore/interface/alpaka/ESGetToken.h"
0012 #include "HeterogeneousCore/AlpakaInterface/interface/config.h"
0013 #include "HeterogeneousCore/AlpakaCore/interface/alpaka/Event.h"
0014 #include "HeterogeneousCore/AlpakaCore/interface/alpaka/EventSetup.h"
0015 #include "HeterogeneousCore/AlpakaCore/interface/alpaka/global/EDProducer.h"
0016
0017 #include "DataFormats/TrackSoA/interface/alpaka/TracksSoACollection.h"
0018 #include "DataFormats/TrackSoA/interface/TracksDevice.h"
0019 #include "DataFormats/VertexSoA/interface/alpaka/ZVertexSoACollection.h"
0020 #include "DataFormats/VertexSoA/interface/ZVertexDevice.h"
0021 #include "HeterogeneousCore/AlpakaCore/interface/alpaka/MakerMacros.h"
0022
0023 #include "vertexFinder.h"
0024
0025 namespace ALPAKA_ACCELERATOR_NAMESPACE {
0026
0027   using namespace cms::alpakatools;
0028
0029   template <typename TrackerTraits>
0030   class PixelVertexProducerAlpaka : public global::EDProducer<> {
0031     using TkSoADevice = reco::TracksSoACollection;
0032     using Algo = vertexFinder::Producer<TrackerTraits>;
0033
0034   public:
0035     explicit PixelVertexProducerAlpaka(const edm::ParameterSet& iConfig);
0036     ~PixelVertexProducerAlpaka() override = default;
0037
0038     static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
0039
0040   private:
0041     void produce(edm::StreamID streamID, device::Event& iEvent, const device::EventSetup& iSetup) const override;
0042
0043     const Algo algo_;
0044
0045     // Maximum number of vertices that will be reconstructed
0046     const int maxVertices_;
0047
0048     // Tracking cuts before sending tracks to vertex algo
0049     const float ptMin_;
0050     const float ptMax_;
0051
0052     device::EDGetToken<TkSoADevice> tokenDeviceTrack_;
0053     device::EDPutToken<ZVertexSoACollection> tokenDeviceVertex_;
0054   };
0055
0056   template <typename TrackerTraits>
0057   PixelVertexProducerAlpaka<TrackerTraits>::PixelVertexProducerAlpaka(const edm::ParameterSet& conf)
0058       : EDProducer(conf),
0059         algo_(conf.getParameter<bool>("oneKernel"),
0060               conf.getParameter<bool>("useDensity"),
0061               conf.getParameter<bool>("useDBSCAN"),
0062               conf.getParameter<bool>("useIterative"),
0063               conf.getParameter<bool>("doSplitting"),
0064               conf.getParameter<int>("minT"),
0065               conf.getParameter<double>("eps"),
0066               conf.getParameter<double>("errmax"),
0067               conf.getParameter<double>("chi2max")),
0068         maxVertices_(conf.getParameter<int>("maxVertices")),
0069         ptMin_(conf.getParameter<double>("PtMin")),  // 0.5 GeV
0070         ptMax_(conf.getParameter<double>("PtMax")),  // 75. Onsumes
0071         tokenDeviceTrack_(consumes(conf.getParameter<edm::InputTag>("pixelTrackSrc"))),
0072         tokenDeviceVertex_(produces()) {}
0073
0074   template <typename TrackerTraits>
0075   void PixelVertexProducerAlpaka<TrackerTraits>::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
0076     edm::ParameterSetDescription desc;
0077
0078     // Only one of these three algos can be used at once.
0079     // Maybe this should become a Plugin Factory
0080     desc.add<bool>("oneKernel", true);
0081     desc.add<bool>("useDensity", true);
0082     desc.add<bool>("useDBSCAN", false);
0083     desc.add<bool>("useIterative", false);
0084     desc.add<bool>("doSplitting", true);
0085
0086     desc.add<int>("minT", 2);          // min number of neighbours to be "core"
0087     desc.add<double>("eps", 0.07);     // max absolute distance to cluster
0088     desc.add<double>("errmax", 0.01);  // max error to be "seed"
0089     desc.add<double>("chi2max", 9.);   // max normalized distance to cluster
0090
0091     desc.add<int>("maxVertices", 256);
0092     desc.add<double>("PtMin", 0.5);
0093     desc.add<double>("PtMax", 75.);
0094     desc.add<edm::InputTag>("pixelTrackSrc", edm::InputTag("pixelTracksAlpaka"));
0095
0096     descriptions.addWithDefaultLabel(desc);
0097   }
0098
0099   template <typename TrackerTraits>
0100   void PixelVertexProducerAlpaka<TrackerTraits>::produce(edm::StreamID streamID,
0101                                                          device::Event& iEvent,
0102                                                          const device::EventSetup& iSetup) const {
0103     auto const& hTracks = iEvent.get(tokenDeviceTrack_);
0104
0105     iEvent.emplace(tokenDeviceVertex_, algo_.makeAsync(iEvent.queue(), hTracks.view(), maxVertices_, ptMin_, ptMax_));
0106   }
0107
0108   using PixelVertexProducerAlpakaPhase1 = PixelVertexProducerAlpaka<pixelTopology::Phase1>;
0109   using PixelVertexProducerAlpakaPhase2 = PixelVertexProducerAlpaka<pixelTopology::Phase2>;
0110   using PixelVertexProducerAlpakaHIonPhase1 = PixelVertexProducerAlpaka<pixelTopology::HIonPhase1>;
0111
0112 }  // namespace ALPAKA_ACCELERATOR_NAMESPACE
0113
0114 DEFINE_FWK_ALPAKA_MODULE(PixelVertexProducerAlpakaPhase1);
0115 DEFINE_FWK_ALPAKA_MODULE(PixelVertexProducerAlpakaPhase2);
0116 DEFINE_FWK_ALPAKA_MODULE(PixelVertexProducerAlpakaHIonPhase1);