BasicConstantGPUDataExporter.cxx

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//
// Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
//
// Dear emacs, this is -*- c++ -*-
//
 
#include "BasicConstantGPUDataExporter.h"
 
#include "CaloRecGPU/CUDAFriendlyClasses.h"
 
#include "CxxUtils/checker_macros.h"
 
#include "AthenaKernel/errorcheck.h"
#include "CaloIdentifier/CaloCell_ID.h"
#include "CaloConditions/CaloNoise.h"
 
#include "boost/chrono/chrono.hpp"
#include "boost/chrono/thread_clock.hpp"
 
#include <algorithm>
 
using namespace CaloRecGPU;
 
BasicConstantGPUDataExporter::BasicConstantGPUDataExporter(const std::string & type, const std::string & name, const IInterface * parent):
  base_class(type, name, parent),
  CaloGPUTimed(this),
  m_hasBeenInitialized(false)
{
}
 
StatusCode BasicConstantGPUDataExporter::initialize()
{
  if (m_hasBeenInitialized)
    {
      ATH_MSG_INFO("Initializing data tool again...");
      return StatusCode::SUCCESS;
    }
 
  ATH_CHECK(m_noiseCDOKey.initialize());
 
  ATH_CHECK(m_caloMgrKey.initialize());
 
  m_hasBeenInitialized = true;
 
  return StatusCode::SUCCESS;
}
 
StatusCode BasicConstantGPUDataExporter::convert(ConstantDataHolder &, const bool) const
{
  ATH_MSG_ERROR("BasicConstantGPUDataExporter (" << this->name() << ") must be used with the "
                "GPU data preparation happening on the first event.");
 
  return StatusCode::FAILURE;
}
 
StatusCode BasicConstantGPUDataExporter::convert(const EventContext & ctx, ConstantDataHolder & cd, const bool keep_CPU_info) const
{
  using clock_type = boost::chrono::thread_clock;
  auto time_cast = [](const auto & before, const auto & after)
  {
    return boost::chrono::duration_cast<boost::chrono::microseconds>(after - before).count();
  };
 
  auto start = clock_type::now();
 
  SG::ReadCondHandle<CaloDetDescrManager> caloMgrHandle{m_caloMgrKey, ctx};
  const CaloDetDescrManager * calo_dd_man = *caloMgrHandle;
 
  cd.m_geometry.allocate();
 
  const CaloCell_ID * calo_id = calo_dd_man->getCaloCell_ID();
 
#if CALORECGPU_ETA_PHI_MAP_DEBUG
  float min_eta_pos[NumSamplings], max_eta_pos[NumSamplings],
        min_eta_neg[NumSamplings], max_eta_neg[NumSamplings],
        min_phi_pos[NumSamplings], max_phi_pos[NumSamplings],
        min_phi_neg[NumSamplings], max_phi_neg[NumSamplings],
        min_deta   [NumSamplings], min_dphi   [NumSamplings],
        max_deta   [NumSamplings], max_dphi   [NumSamplings],
        avg_deta   [NumSamplings], avg_dphi   [NumSamplings],
        min_dr     [NumSamplings], min_dz     [NumSamplings],
        max_dr     [NumSamplings], max_dz     [NumSamplings];
        
  for (int i = 0; i < NumSamplings; ++i)
    {
      min_eta_pos[i] = std::numeric_limits<float>::max();
      max_eta_pos[i] = std::numeric_limits<float>::lowest();
      min_eta_neg[i] = std::numeric_limits<float>::max();
      max_eta_neg[i] = std::numeric_limits<float>::lowest();
      min_phi_pos[i] = std::numeric_limits<float>::max();
      max_phi_pos[i] = std::numeric_limits<float>::lowest();
      min_phi_neg[i] = std::numeric_limits<float>::max();
      max_phi_neg[i] = std::numeric_limits<float>::lowest();
      min_deta   [i] = std::numeric_limits<float>::max();
      min_dphi   [i] = std::numeric_limits<float>::max();
      max_deta   [i] = std::numeric_limits<float>::lowest();
      max_dphi   [i] = std::numeric_limits<float>::lowest();
      avg_deta   [i] = 0.f;
      avg_dphi   [i] = 0.f;
      min_dr     [i] = std::numeric_limits<float>::max();
      min_dz     [i] = std::numeric_limits<float>::max();
      max_dr     [i] = std::numeric_limits<float>::lowest();
      max_dz     [i] = std::numeric_limits<float>::lowest();
      
      cd.m_geometry->nCellsPerSampling[i] = 0;
    }
#else
  float min_eta[NumSamplings], max_eta[NumSamplings];
 
  for (int i = 0; i < NumSamplings; ++i)
    {
      min_eta[i] = std::numeric_limits<float>::max();
      max_eta[i] = std::numeric_limits<float>::lowest();
      
      cd.m_geometry->nCellsPerSampling[i] = 0;
    }
#endif
 
  for (int cell = 0; cell < NCaloCells; ++cell)
    {
      const CaloDetDescrElement * caloElement = calo_dd_man->get_element((IdentifierHash) cell);
 
      const Identifier cell_identifier = calo_id->cell_id((IdentifierHash) cell);
 
      const int  sampling            = calo_id->calo_sample(cell_identifier);
      const int  intra_calo_sampling = calo_id->sampling(cell_identifier);
      const int  subcalo             = caloElement->getSubCalo();
      const int  region              = calo_id->region(cell_identifier);
      
      const bool is_PS               =   (subcalo == CaloCell_ID::LAREM   && intra_calo_sampling == 0);
      
      const bool is_HECIW_or_FCAL    = ( (subcalo == CaloCell_ID::LARHEC  && region              == 1 ) ||
                                         (subcalo == CaloCell_ID::LARFCAL && intra_calo_sampling >  1 )    );
      
      cd.m_geometry->otherCellInfo[cell] = OtherCellInfo(sampling,
                                                         ConstantEnumConversion::from_intra_calorimeter_sampling_enum(intra_calo_sampling),
                                                         ConstantEnumConversion::from_subcalo_enum(subcalo),
                                                         ConstantEnumConversion::from_region_enum(region),
                                                         is_PS,
                                                         is_HECIW_or_FCAL);
      cd.m_geometry->x[cell] = caloElement->x();
      cd.m_geometry->y[cell] = caloElement->y();
      cd.m_geometry->z[cell] = caloElement->z();
      cd.m_geometry->r[cell] = caloElement->r();
      cd.m_geometry->eta[cell] = caloElement->eta();
      cd.m_geometry->phi[cell] = caloElement->phi();
 
      cd.m_geometry->dx[cell] = caloElement->dx();
      cd.m_geometry->dy[cell] = caloElement->dy();
      cd.m_geometry->dz[cell] = caloElement->dz();
      cd.m_geometry->dr[cell] = caloElement->dr();
      cd.m_geometry->deta[cell] = caloElement->deta();
      cd.m_geometry->dphi[cell] = caloElement->dphi();
 
      cd.m_geometry->volume[cell] = caloElement->volume();
      cd.m_geometry->neighbours.offsets[cell] = 0;
 
#if CALORECGPU_ETA_PHI_MAP_DEBUG
      const float eta_minus = caloElement->eta() - caloElement->deta() / 2;
      const float eta_plus  = caloElement->eta() + caloElement->deta() / 2;
      const float phi_minus = caloElement->phi() - caloElement->dphi() / 2;
      const float phi_plus  = caloElement->phi() + caloElement->dphi() / 2;
      
      if (caloElement->eta() >= 0)
        {
          min_eta_pos[sampling] = std::min({min_eta_pos[sampling], eta_minus, eta_plus});
          min_phi_pos[sampling] = std::min({min_phi_pos[sampling], phi_minus, phi_plus});
          max_eta_pos[sampling] = std::max({max_eta_pos[sampling], eta_minus, eta_plus});
          max_phi_pos[sampling] = std::max({max_phi_pos[sampling], phi_minus, phi_plus});
        }
      else
        {
          min_eta_neg[sampling] = std::min({min_eta_neg[sampling], eta_minus, eta_plus});
          min_phi_neg[sampling] = std::min({min_phi_neg[sampling], phi_minus, phi_plus});
          max_eta_neg[sampling] = std::max({max_eta_neg[sampling], eta_minus, eta_plus});
          max_phi_neg[sampling] = std::max({max_phi_neg[sampling], phi_minus, phi_plus});
        }
      min_deta[sampling] = std::min(min_deta[sampling], caloElement->deta());
      min_dphi[sampling] = std::min(min_dphi[sampling], caloElement->dphi());
      max_deta[sampling] = std::max(max_deta[sampling], caloElement->deta());
      max_dphi[sampling] = std::max(max_dphi[sampling], caloElement->dphi());
      min_dr  [sampling] = std::min(min_dr  [sampling], caloElement->dr  ());
      min_dz  [sampling] = std::min(min_dz  [sampling], caloElement->dz  ());
      max_dr  [sampling] = std::max(max_dr  [sampling], caloElement->dr  ());
      max_dz  [sampling] = std::max(max_dz  [sampling], caloElement->dz  ());
      
      avg_deta[sampling] += caloElement->deta();
      avg_dphi[sampling] += caloElement->dphi();
#else
      const float eta_below = fabsf(caloElement->eta() - caloElement->deta() / 2);
      const float eta_above = fabsf(caloElement->eta() + caloElement->deta() / 2);
      min_eta[sampling] = std::min(min_eta[sampling], std::min(eta_below, eta_above));
      max_eta[sampling] = std::max(max_eta[sampling], std::max(eta_below, eta_above));
#endif
      
      cd.m_geometry->nCellsPerSampling[sampling] += 1;
    }
    
  auto after_geo = clock_type::now();
 
  for (int i = 0; i < NumSamplings; ++i)
    {
#if CALORECGPU_ETA_PHI_MAP_DEBUG
      avg_deta[i] /= cd.m_geometry->nCellsPerSampling[i];
      avg_dphi[i] /= cd.m_geometry->nCellsPerSampling[i];
      if (cd.m_geometry->nCellsPerSampling[i] > 0)
        {
          printf("CALORECGPU ETA PHI MAP DEBUG OUTPUT: %d | %f %f %f %f | %f %f %f %f | %f %f | %f %f | %f %f %d | %f %f | %f %f\n",
                 i, min_eta_neg[i], min_phi_neg[i], max_eta_neg[i], max_phi_neg[i],
                 min_eta_pos[i], min_phi_pos[i], max_eta_pos[i], max_phi_pos[i],
                 min_deta[i], min_dphi[i], max_deta[i], max_dphi[i],
                 avg_deta[i], avg_dphi[i], cd.m_geometry->nCellsPerSampling[i],
                 min_dr[i], min_dz[i], max_dr[i], max_dz[i]);
        }
      const float this_min_eta = std::min(fabsf(max_eta_neg[i]), fabsf(min_eta_pos[i]));
      const float this_max_eta = std::max(fabsf(min_eta_neg[i]), fabsf(max_eta_pos[i]));
#else
      const float this_min_eta = min_eta[i];
      const float this_max_eta = max_eta[i];
#endif
 
      if (cd.m_geometry->nCellsPerSampling[i] <= 0)
        {
          cd.m_geometry->etaPhiToCell.initialize(i, -1, 1);
          //Just to prevent NaN.
        }
      else
        {
          cd.m_geometry->etaPhiToCell.initialize(i, this_min_eta, this_max_eta);
        }
    }
 
  cd.m_geometry->fill_eta_phi_map();
  
#if CALORECGPU_ETA_PHI_MAP_DEBUG
  for (int i = 0; i < NumSamplings; ++i)
    {
      auto printer = [&](const auto & entry)
      { 
        printf("CALORECGPU ETA PHI MAP DEBUG OUTPUT: %d | %d\n", i, entry.get_max_real_overlap());
      };
      
      cd.m_geometry->etaPhiToCell.apply_to_sampling(i, printer);
    }
#endif
 
  auto after_eta_phi = clock_type::now();
  
  std::vector<IdentifierHash> neighbour_vector, full_neighs, prev_neighs;
 
  for (int cell = 0; cell < NCaloCells; ++cell)
    {
      for (int neigh_bit_set = 0; neigh_bit_set < NumNeighOptions; ++neigh_bit_set)
        {
          const unsigned int curr_neigh_opt = (1U << neigh_bit_set);
 
          if (curr_neigh_opt == LArNeighbours::corners2D || curr_neigh_opt == LArNeighbours::corners3D)
            //Scanning the ATLAS codebase, neighbour handling has special cases
            //for all2D (LarFCAL_Base_ID.cxx, LArMiniFCAL_ID.cxx, Tile_Base_ID.cxx)
            //and all3DwithCorners (Tile_Base_ID.cxx), which include
            //neighbours not returned when just the constituent bits are set separately.
            //As an imperfect workaround, we stuff them in the immediately previous option
            //(corners, for both 2D and 3D).
            {
              if (curr_neigh_opt == LArNeighbours::corners2D)
                {
                  calo_id->get_neighbours((IdentifierHash) cell,
                                          (LArNeighbours::neighbourOption) LArNeighbours::all2D,
                                          full_neighs);
                }
              else /*if (curr_neigh_opt == LArNeighbours::corners3D)*/
                {
                  calo_id->get_neighbours((IdentifierHash) cell,
                                          (LArNeighbours::neighbourOption) LArNeighbours::all3DwithCorners,
                                          prev_neighs);
                  calo_id->get_neighbours((IdentifierHash) cell,
                                          (LArNeighbours::neighbourOption) LArNeighbours::super3D,
                                          neighbour_vector);
                  //We will exclude the cells that could come from later options
                  //(it seems,  from Tile_Base_ID.cxx, all3DwithCorners will give more than super3D),
                  //which... might make some sense, but seems unexpected.
 
 
                  std::sort(neighbour_vector.begin(), neighbour_vector.end());
                  std::sort(prev_neighs.begin(), prev_neighs.end());
 
                  full_neighs.clear();
 
                  std::set_difference( prev_neighs.begin(), prev_neighs.end(),
                                       neighbour_vector.begin(), neighbour_vector.end(),
                                       std::back_inserter(full_neighs)    );
 
                }
 
              prev_neighs.resize(cd.m_geometry->neighbours.get_total_number_of_neighbours(cell));
              //We want to add just the neighbours that are not part of this.
 
              for (size_t neigh = 0; neigh < prev_neighs.size(); ++neigh)
                {
                  prev_neighs[neigh] = cd.m_geometry->neighbours.get_neighbour(cell, neigh);
                }
 
              std::sort(full_neighs.begin(), full_neighs.end());
              std::sort(prev_neighs.begin(), prev_neighs.end());
 
              neighbour_vector.clear();
 
              std::set_difference( full_neighs.begin(), full_neighs.end(),
                                   prev_neighs.begin(), prev_neighs.end(),
                                   std::back_inserter(neighbour_vector)    );
            }
          else
            {
              calo_id->get_neighbours((IdentifierHash) cell, (LArNeighbours::neighbourOption) curr_neigh_opt, neighbour_vector);
            }
 
          std::sort(neighbour_vector.begin(), neighbour_vector.end());
 
          const int neighs_start = cd.m_geometry->neighbours.get_total_number_of_neighbours(cell);
 
          for (size_t neigh_num = 0; neigh_num < neighbour_vector.size(); ++neigh_num)
            {
              cd.m_geometry->neighbours.set_neighbour(cell, neighs_start + neigh_num, neighbour_vector[neigh_num]);
            }
 
          cd.m_geometry->neighbours.offsets[cell] += NeighOffset::offset_delta(neigh_bit_set) * neighbour_vector.size();
 
        }
    }
 
#if CALORECGPU_ADD_FULL_PAIRS_LIST_TO_CONSTANT_INFORMATION
 
//Note: the commented out code is used to output the hard-coded numbers
//in NeighPairsArr. For the time being, it should remain here until
//a more definitive solution for the geometry is found.
 
    {
      int num_pairs = 0;
 
      auto add_neighbours = [&](const int cell, const unsigned int curr_neigh_opt)
      {
        int neighbours[NMaxNeighbours];
 
        const int num_neighs = cd.m_geometry->neighbours.get_neighbours(curr_neigh_opt, cell, neighbours);
 
        for (int neigh = 0; neigh < num_neighs; ++neigh)
          {
            cd.m_geometry->neighPairs.cell_A[num_pairs] = cell;
            cd.m_geometry->neighPairs.cell_B[num_pairs] = neighbours[neigh];
            ++num_pairs;
          }
      };
 
      for (int neigh_bit_set = 0; neigh_bit_set < NumNeighOptions; ++neigh_bit_set)
        {
          const unsigned int curr_neigh_opt = (1U << neigh_bit_set);
 
          for (int cell = 0; cell < NCaloCells; ++cell)
            {
              if (cd.m_geometry->is_PS(cell) || cd.m_geometry->is_HECIW_or_FCal(cell))
                {
                  continue;
                }
 
              add_neighbours(cell, curr_neigh_opt);
            }
 
          //const int PS_start = num_pairs;
 
          for (int cell = 0; cell < NCaloCells; ++cell)
            {
              if (!cd.m_geometry->is_PS(cell))
                {
                  continue;
                }
 
              add_neighbours(cell, curr_neigh_opt);
            }
 
          //const int HECIW_FCal_start = num_pairs;
 
          for (int cell = 0; cell < NCaloCells; ++cell)
            {
              if (!cd.m_geometry->is_HECIW_or_FCal(cell))
                {
                  continue;
                }
 
              add_neighbours(cell, curr_neigh_opt);
            }
 
          //std::cout << neigh_bit_set << " " << num_pairs << " " << PS_start << " " << HECIW_FCal_start << std::endl;
        }
    }
#endif
 
  auto after_pairs = clock_type::now();
 
  /*
    //Useful output for debugging and studying regularities in calorimeter geometry...
    
    std::cout << "ID\tCaloSample\tSampling\tRegion\tSubCalo";
    for (int j = 0; j < NumNeighOptions; ++j)
      {
        std::cout << "\tn_" << j;
      }
    std::cout << "\tn_total\tOffset" << std::endl;
 
    for (int cell = 0; cell < NCaloCells; ++cell)
    {
 
        const CaloDetDescrElement * caloElement = calo_dd_man->get_element((IdentifierHash) cell);
        std::cout << cell                                                                << "\t"
                  << (int) calo_id->calo_sample(calo_id->cell_id((IdentifierHash) cell)) << "\t"
                  << (int) calo_id->sampling(calo_id->cell_id((IdentifierHash) cell))    << "\t"
                  << (int) calo_id->region(calo_id->cell_id((IdentifierHash) cell))      << "\t"
                  << (int) caloElement->getSubCalo();
 
        const NeighOffset n_off = cd.m_geometry->neighbours.offsets[cell];
 
        for (int j = 0; j < NumNeighOptions; ++j)
          {
            std::cout << "\t" << n_off.get_num_cells(j);
          }
 
        std::cout << "\t" << n_off.get_total_number() << "\t" << n_off << std::endl;
    }
  // */
 
  SG::ReadCondHandle<CaloNoise> noise_handle(m_noiseCDOKey, ctx);
  const CaloNoise * noise_tool = *noise_handle;
 
  IdentifierHash t_start, t_end;
  calo_id->calo_cell_hash_range(CaloCell_ID::TILE, t_start, t_end);
 
  if (t_start != TileCellStart)
    {
      ATH_MSG_WARNING("Tile start (" << t_start << ") differs from assumed constant value (" << TileCellStart << ")!");
    }
  if (t_end != TileCellAfterEnd)
    {
      ATH_MSG_WARNING("Tile end (" << t_end << ") differs from assumed constant value (" << TileCellAfterEnd << ")!");
    }
 
  const CaloCondBlobFlt * blob = noise_tool->getTileBlob();
 
  cd.m_cell_noise.allocate();
 
  if (!blob)
    {
      cd.m_cell_noise->noise_properties = CellNoiseProperties::invalid_value();
    }
  else
    {
      cd.m_cell_noise->noise_properties = CellNoiseProperties(blob->getObjVersion(), noise_tool->getNoiseType());
    }
 
  cd.m_cell_noise->luminosity = noise_tool->getLumi();
 
  for (int cell = 0; cell < int(t_start); ++cell)
    {
      for (int gain_state = 0; gain_state < CaloRecGPU::NumGainStates; ++gain_state)
        {
          cd.m_cell_noise->noise[cell][gain_state] = noise_tool->larStorage()[(gain_state > 2 ? 0 : gain_state)][cell];
        }
    }
  for (int cell = t_start; cell < int(t_end); ++cell)
    {
      for (int gain_state = 0; gain_state < CaloRecGPU::NumGainStates; ++gain_state)
        {
          cd.m_cell_noise->noise[cell][gain_state] = noise_tool->tileStorage()[gain_state][cell - t_start];
          cd.m_cell_noise->double_gaussian_constants[0][cell - t_start][gain_state] = blob->getData(cell - t_start, gain_state, 2);
          cd.m_cell_noise->double_gaussian_constants[1][cell - t_start][gain_state] = blob->getData(cell - t_start, gain_state, 3);
          cd.m_cell_noise->double_gaussian_constants[2][cell - t_start][gain_state] = blob->getData(cell - t_start, gain_state, 4);
          cd.m_cell_noise->double_gaussian_constants[3][cell - t_start][gain_state] = blob->getData(cell - t_start, gain_state, 1);
        }
    }
  for (int cell = t_end; cell < NCaloCells; ++cell)
    {
      for (int gain_state = 0; gain_state < CaloRecGPU::NumGainStates; ++gain_state)
        {
          cd.m_cell_noise->noise[cell][gain_state] = 0;
        }
    }
 
  auto after_noise = clock_type::now();
 
  cd.sendToGPU(!(m_keepCPUData || keep_CPU_info));
 
 
  auto after_send = clock_type::now();
 
  if (m_measureTimes)
    {
      record_times(ctx.evt(),
                   time_cast(start, after_geo),
                   time_cast(after_geo, after_eta_phi),
                   time_cast(after_eta_phi, after_pairs),
                   time_cast(after_pairs, after_noise),
                   time_cast(after_noise, after_send)
                  );
    }
 
  return StatusCode::SUCCESS;
 
}
 
StatusCode BasicConstantGPUDataExporter::finalize()
{
 
  if (m_measureTimes)
    {
      print_times("Basic_Geometry Eta_Phi_Map_Finalize Pairs Noise Transfer_to_GPU", 5);
    }
  return StatusCode::SUCCESS;
}