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 = TracksSoACollection<TrackerTraits>;
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       : algo_(conf.getParameter<bool>("oneKernel"),
0059               conf.getParameter<bool>("useDensity"),
0060               conf.getParameter<bool>("useDBSCAN"),
0061               conf.getParameter<bool>("useIterative"),
0062               conf.getParameter<bool>("doSplitting"),
0063               conf.getParameter<int>("minT"),
0064               conf.getParameter<double>("eps"),
0065               conf.getParameter<double>("errmax"),
0066               conf.getParameter<double>("chi2max")),
0067         maxVertices_(conf.getParameter<int>("maxVertices")),
0068         ptMin_(conf.getParameter<double>("PtMin")),  // 0.5 GeV
0069         ptMax_(conf.getParameter<double>("PtMax")),  // 75. Onsumes
0070         tokenDeviceTrack_(consumes(conf.getParameter<edm::InputTag>("pixelTrackSrc"))),
0071         tokenDeviceVertex_(produces()) {}
0072
0073   template <typename TrackerTraits>
0074   void PixelVertexProducerAlpaka<TrackerTraits>::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
0075     edm::ParameterSetDescription desc;
0076
0077     // Only one of these three algos can be used at once.
0078     // Maybe this should become a Plugin Factory
0079     desc.add<bool>("oneKernel", true);
0080     desc.add<bool>("useDensity", true);
0081     desc.add<bool>("useDBSCAN", false);
0082     desc.add<bool>("useIterative", false);
0083     desc.add<bool>("doSplitting", true);
0084
0085     desc.add<int>("minT", 2);          // min number of neighbours to be "core"
0086     desc.add<double>("eps", 0.07);     // max absolute distance to cluster
0087     desc.add<double>("errmax", 0.01);  // max error to be "seed"
0088     desc.add<double>("chi2max", 9.);   // max normalized distance to cluster
0089
0090     desc.add<int>("maxVertices", 256);
0091     desc.add<double>("PtMin", 0.5);
0092     desc.add<double>("PtMax", 75.);
0093     desc.add<edm::InputTag>("pixelTrackSrc", edm::InputTag("pixelTracksAlpaka"));
0094
0095     descriptions.addWithDefaultLabel(desc);
0096   }
0097
0098   template <typename TrackerTraits>
0099   void PixelVertexProducerAlpaka<TrackerTraits>::produce(edm::StreamID streamID,
0100                                                          device::Event& iEvent,
0101                                                          const device::EventSetup& iSetup) const {
0102     auto const& hTracks = iEvent.get(tokenDeviceTrack_);
0103
0104     iEvent.emplace(tokenDeviceVertex_, algo_.makeAsync(iEvent.queue(), hTracks.view(), maxVertices_, ptMin_, ptMax_));
0105   }
0106
0107   using PixelVertexProducerAlpakaPhase1 = PixelVertexProducerAlpaka<pixelTopology::Phase1>;
0108   using PixelVertexProducerAlpakaPhase2 = PixelVertexProducerAlpaka<pixelTopology::Phase2>;
0109   using PixelVertexProducerAlpakaHIonPhase1 = PixelVertexProducerAlpaka<pixelTopology::HIonPhase1>;
0110
0111 }  // namespace ALPAKA_ACCELERATOR_NAMESPACE
0112
0113 DEFINE_FWK_ALPAKA_MODULE(PixelVertexProducerAlpakaPhase1);
0114 DEFINE_FWK_ALPAKA_MODULE(PixelVertexProducerAlpakaPhase2);
0115 DEFINE_FWK_ALPAKA_MODULE(PixelVertexProducerAlpakaHIonPhase1);