GPUDefConstantsAndSettings.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
 
// This files contains compile-time constants affecting the GPU algorithms / reconstruction results.
// Architecture-dependant compile-time constants affecting the performance without changing the results are stored in GPUDefParameters*.h
 
#ifndef GPUDEFCONSTANTSANDSETTINGS_H
#define GPUDEFCONSTANTSANDSETTINGS_H
 
// clang-format off
 
#include "GPUCommonDef.h"
 
#if !defined(GPUCA_STANDALONE) && !defined(GPUCA_O2_LIB) && !defined(GPUCA_O2_INTERFACE)
  #error You are using the CA GPU tracking without defining the build type (O2/Standalone). If you are running an O2 ROOT macro, please include GPUO2ExternalUser.h first!
#endif
 
#if (defined(GPUCA_O2_LIB) && defined(GPUCA_STANDALONE))
  #error Invalid Compile Definitions, need to build for either O2 or Standalone!
#endif
 
namespace o2::gpu::constants
{
static constexpr uint32_t MERGER_MAX_TRACK_CLUSTERS = 1024; // Maximum number of clusters a track may have after merging
static constexpr uint32_t NEIGHBOURS_MAX_N = 40;            // Maximum number of neighbor hits to consider in one row in neightbors finder
static constexpr float MAX_SIN_PHI_LOW = 0.99f;             // Limits for maximum sin phi during fit
static constexpr float MAX_SIN_PHI = 0.999f;                // Must be preprocessor define because c++ pre 11 cannot use static constexpr for initializes
static constexpr float GRID_MIN_BIN_SIZE = 2.f;             // Minimum bin size in TPC fast access grid
static constexpr float GRID_MAX_BIN_SIZE = 1000.f;          // Maximum bin size in TPC fast access grid
static constexpr uint32_t TPC_COMP_CHUNK_SIZE = 1024;       // Chunk size of sorted unattached TPC cluster in compression
#ifdef GPUCA_RUN2
static constexpr uint32_t TPC_MAX_TIME_BIN_TRIGGERED = 1024;
#else
static constexpr uint32_t TPC_MAX_TIME_BIN_TRIGGERED = 600;
#endif
} // namespace o2::gpu::constants
 
//#define GPUCA_MERGER_BY_MC_LABEL                    // Use MC labels for TPC track merging - for performance studies // TODO: Cleanup unneeded options
 
// clang-format on
 
#endif