clusterFinderDefs.h

Go to the documentation of this file.

// 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.
 
 
#ifndef O2_GPU_CLUSTERFINDERDEFS_H
#define O2_GPU_CLUSTERFINDERDEFS_H
 
#include "GPUDef.h"
#include "DataFormatsTPC/Constants.h"
 
/* #define CHARGEMAP_TIME_MAJOR_LAYOUT */
#define CHARGEMAP_TILING_LAYOUT
 
#define SCRATCH_PAD_SEARCH_N 8 // TODO: Change all this to constexpr where possible, like in GPUDefParametersConstants.h
#define SCRATCH_PAD_COUNT_N 16
#if defined(GPUCA_GPUCODE)
#define SCRATCH_PAD_BUILD_N 8
#define SCRATCH_PAD_NOISE_N 8
#else
// Double shared memory on cpu as we can't reuse the memory from other threads
#define SCRATCH_PAD_BUILD_N 16
#define SCRATCH_PAD_NOISE_N 16
#endif
 
// Padding of 2 and 3 respectively would be enough. But this ensures that
// rows are always aligned along cache lines. Likewise for TPC_CLUSTERER_ROW_PAD_CAPACITY.
#define GPUCF_PADDING_PAD 8
#define GPUCF_PADDING_TIME 4
// Largest possible number of pads in a TPC row
#define TPC_CLUSTERER_ROW_PAD_CAPACITY 144
 
// Stride between rows as stored internally by the clusterizer
#define TPC_CLUSTERER_ROW_STRIDE (TPC_CLUSTERER_ROW_PAD_CAPACITY + GPUCF_PADDING_PAD)
// Number of pads in a sector as stored internally by the clusterizer.
// This includes fake pads for constant strides between rows
#define TPC_CLUSTERER_STRIDED_PAD_COUNT (o2::tpc::constants::MAXGLOBALPADROW * TPC_CLUSTERER_ROW_STRIDE + GPUCF_PADDING_PAD)
// Real of number of pads in a sector
#define TPC_REAL_PADS_IN_SECTOR 14560
#define TPC_FEC_IDS_IN_SECTOR 23296
#define TPC_MAX_FRAGMENT_LEN_GPU 4000
#define TPC_MAX_FRAGMENT_LEN_HOST 1000
#define TPC_MAX_FRAGMENT_LEN_PADDED(size) ((size) + 2 * GPUCF_PADDING_TIME)
 
#ifdef GPUCA_GPUCODE
#define CPU_ONLY(x)
#define CPU_PTR(x) nullptr
#else
#define CPU_ONLY(x) x
#define CPU_PTR(x) x
#endif
 
namespace o2::gpu::tpccf
{
 
using SizeT = size_t;
using TPCTime = int32_t;
using TPCFragmentTime = int16_t;
using Pad = uint8_t;
using GlobalPad = int16_t;
using Row = uint8_t;
using Cru = uint8_t;
 
using Charge = float;
 
using Delta = int16_t;
using Delta2 = short2;
 
using local_id = short2;
 
} // namespace o2::gpu::tpccf
 
#endif