cudaTreeInfo.h

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/*--------------------------------*- VM2D -*-----------------*---------------*\
| ##  ## ##   ##  ####  #####   |                            | Version 1.14   |
| ##  ## ### ### ##  ## ##  ##  |  VM2D: Vortex Method       | 2026/03/06     |
| ##  ## ## # ##    ##  ##  ##  |  for 2D Flow Simulation    *----------------*
|  ####  ##   ##   ##   ##  ##  |  Open Source Code                           |
|   ##   ##   ## ###### #####   |  https://www.github.com/vortexmethods/VM2D  |
|                                                                             |
| Copyright (C) 2017-2026 I. Marchevsky, K. Sokol, E. Ryatina, A. Kolganova   |
*-----------------------------------------------------------------------------*
| File name: cudaTreeInfo.h                                                   |
| Info: Source code of VM2D                                                   |
|                                                                             |
| This file is part of VM2D.                                                  |
| VM2D is free software: you can redistribute it and/or modify it             |
| under the terms of the GNU General Public License as published by           |
| the Free Software Foundation, either version 3 of the License, or           |
| (at your option) any later version.                                         |
|                                                                             |
| VM2D is distributed in the hope that it will be useful, but WITHOUT         |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       |
| FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License       |
| for more details.                                                           |
|                                                                             |
| You should have received a copy of the GNU General Public License           |
| along with VM2D.  If not, see <http://www.gnu.org/licenses/>.               |
\*---------------------------------------------------------------------------*/
 
#ifndef CUDATREEINFO_H
#define CUDATREEINFO_H
 
#ifdef USE_CUDA
 
#include <cuda_runtime.h>
#include <device_launch_parameters.h>
 
#include "Vortex2D.h"
#include "Gpudefs.h"
 
namespace BHcu
{    
    struct infoForMatVecMul
    {
        std::vector<int> nClosePanels;    
        std::vector<int> nFarCells;       
 
        std::vector<int> closePrefixSum;  
        std::vector<int> farPrefixSum;    
 
        Point2D* i00D; 
        Point2D* i01D; 
        Point2D* i10D; 
        Point2D* i11D; 
 
        int* nClosePanelsD;     
        int* nFarCellsD;        
 
        int* closeCellsIdxD;    
        int* farCellsIdxD;      
 
        int* closePrefixSumD;  
        int* farPrefixSumD;    
 
        infoForMatVecMul()
        {
            i00D = i01D = i10D = i11D = nullptr;//
            //nClosePanelsD = nullptr;
            //nFarCellsD = nullptr;
            closeCellsIdxD = nullptr;//
            farCellsIdxD = nullptr; //
            //closePrefixSumD = nullptr;
            //farPrefixSumD = nullptr;
        }
 
        void ReleaseGpuMemory();
    };
 
 
    class CudaTreeInfo
    {
 
    public:
        int nObject;        
        int nNode;
 
        bool duplicateObj;
        double* objectD;
        
        tree_T treeType;
        object_T objectType;       
        
        scheme_T schemeType;
 
        int sizeOfElement;
 
        int* massD; //����� (������� ��� ��������� �����, ����� ������ ��� ������)
 
        Point2D* maxrD, * minrD;      //���������� �������������
        Point2D* momsD;               //������������� ������� ���� �����; �������� � ���� <mom_0x, mom_0y=0, mom_1x, mom_1y, ..., mom_px, mom_py>, <��� ������ ������> ...
        Point2D* ED; //�-�� ��������� ����������
 
        //For Morton tree
        int* mortonCodesKeyUnsortD;
        int* mortonCodesKeyD;
 
        int* mortonCodesIdxUnsortD; //0 1 2 3 ... nbodies-1     
        int* mortonCodesIdxD;
 
        int* levelUnsortD;
        int* levelSortD;
 
        int* indexUnsortD;  //0 1 2 3 ... nbodies-2
        int* indexSortD;
        int* indexSortTD;
 
        Point2D* centerD;  //��������� ���������� ����� � ������ �������
        Point4D* lowerupperD; //����� ������ � ������ ������� ���� ������
        Point4D* gabForLeavesD; //����� ������ � ������ ������� ���� �����
 
        int* parentD;     //����� ������-��������
        long long* childD;  //������� ���������� ����� (� ����� ������ ������ ����� ��� ����� �����)
        long long* rangeD;  //�������� ������ �� ���������� ������ (� ����� ������ ������ ����� ��� ����� �����)
 
        void* sortObjectsBufferD;
        int sortObjectsBufferSizeInBytes;
 
        void* sortInternalCellsBufferD;
        int sortInternalCellsBufferSizeInBytes;
 
        const int nBlock;
        int reservedMemorySizeItems;
 
        infoForMatVecMul matVecMulInfo;
 
        CudaTreeInfo(int nBlock_, tree_T treeType_, object_T objectType_, scheme_T schemeType_, bool duplicateObj_);
        ~CudaTreeInfo();
 
        void Update(int nObject_, double* objectD_);
        void UpdatePanelGeometry(int nObject_, double4* gabForLeavesD_);
 
        void UpdatePanelFreeVortexIntensity(const double* dev_ptr_freeVortexSheet, const double* dev_ptr_freeVortexSheetLin);//������� ����� attached vortex sheet
        void UpdatePanelAttachedVortexIntensity(const double* dev_ptr_attachedVortexSheet, const double* dev_ptr_attachedVortexSheetLin);//������� ����� free vortex sheet
        void UpdatePanelAttachedSourceIntensity(const double* dev_ptr_attachedSourceSheet, const double* dev_ptr_attachedSourceSheetLin);
        void UpdatePanelFreeAndAttachedVortexIntensity(const double* dev_ptr_freeVortexSheet, const double* dev_ptr_freeVortexSheetLin, const double* dev_ptr_attachedVortexSheet, const double* dev_ptr_attachedVortexSheetLin);
 
        float MemoryAllocateForGMRES(bool firstStep, double itheta2);
        void MemoryFreeForGMRES();
 
        void MemoryAllocate(int nCudaObject);
        
        bool IsInitialized() const;
 
        float Build();
        float UpwardTraversal(int order);
 
        template <int NUMBER_OF_THREADS>
        float DownwardTraversalVorticesToPoints(CudaTreeInfo& cntrTree, Point2D* velD, double* epsastD, double theta, int order, bool calcRadius);
        
        float DownwardTraversalVorticesToPanels(CudaTreeInfo& cntrTree, double* rhsD, double* rhsLinD, double theta, int order);
        float DownwardTraversalPanelsToPoints(CudaTreeInfo& cntrTree, Point2D* velD, double theta, int order);
        float DownwardTraversalGMRES(double* resD, double* resLinD, double itheta2, int order, int iter, bool memAlloc);
 
        float I1I2CalculationWrapper(double minRd, double* __restrict I1D, Point2D* __restrict I2D, double* __restrict epsastD);
        float I0I3CalculationWrapper(double minRd, float* __restrict I0D, Point2Df* __restrict I3D, double* __restrict epsastD, const double* __restrict meanEpsD, int nPan, double* __restrict panD, double* __restrict visstrD);
        void RadixSortMortonCodes(int beginBit = 0, int endBit = 2 * codeLength);
        void RadixSortInternalCells(int beginBit = 0, int endBit = 2 * codeLength);
    };
 
}
 
#endif
 
#endif