112 lines
3.6 KiB
C++
112 lines
3.6 KiB
C++
/*
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<moGPUCopy.h>
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Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010
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Boufaras Karima, Thé Van Luong
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This software is governed by the CeCILL license under French law and
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abiding by the rules of distribution of free software. You can use,
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modify and/ or redistribute the software under the terms of the CeCILL
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license as circulated by CEA, CNRS and INRIA at the following URL
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"http://www.cecill.info".
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As a counterpart to the access to the source code and rights to copy,
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modify and redistribute granted by the license, users are provided only
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with a limited warranty and the software's author, the holder of the
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economic rights, and the successive licensors have only limited liability.
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In this respect, the user's attention is drawn to the risks associated
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with loading, using, modifying and/or developing or reproducing the
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software by the user in light of its specific status of free software,
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that may mean that it is complicated to manipulate, and that also
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therefore means that it is reserved for developers and experienced
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professionals having in-depth computer knowledge. Users are therefore
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encouraged to load and test the software's suitability as regards their
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requirements in conditions enabling the security of their systems and/or
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data to be ensured and, more generally, to use and operate it in the
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same conditions as regards security.
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The fact that you are presently reading this means that you have had
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knowledge of the CeCILL license and that you accept its terms.
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ParadisEO WebSite : http://paradiseo.gforge.inria.fr
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Contact: paradiseo-help@lists.gforge.inria.fr
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*/
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#ifndef __moGPUCopy_H_
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#define __moGPUCopy_H_
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/**
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* class to copy data from CPU memory to GPU global memory and vice versa
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*/
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class moGPUCopy {
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public:
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/**
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* Constructor
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*/
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moGPUCopy() {
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}
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/**
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*Copy data from CPU memory to GPU global memory (default copy)
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*@param _data the data representation where the data will be copied
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*@param _dataTocpy the data to copy from CPU memory to GPU memory
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*@param _dataSize the size of data to copy
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*/
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template<typename T>
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void operator()(T* & _data, T * & _dataTocpy, unsigned _dataSize) {
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//copy data from CPU memory to GPU memory
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cudaMemcpy(_data, _dataTocpy, _dataSize * sizeof(T),
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cudaMemcpyHostToDevice);
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}
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/**
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*Copy device data from GPU global memory to global variable declared in device
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*@param _dev_data the device global variable
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*@param _dataTocpy the data to copy GPU global memory to GPU global variable
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*/
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template<typename T>
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void operator()(T* & _dev_data, T * & _dataTocpy) {
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//Copy n bytes from the memory area pointed to by _dataTocpy to the memory area pointed to by offset bytes from the start of symbol _dev_data
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cudaMemcpyToSymbol(_dev_data, &_dataTocpy, sizeof(_dataTocpy));
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}
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/**
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*Copy data from CPU memory to GPU global memory and vice versa
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*@param _data the data representation where the data will be copied
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*@param _dataTocpy the data to copy from CPU memory to GPU memory and vice versa
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*@param _dataSize the size of data to copy
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*@param _HostToDevice the direction of copy(true if copy will be done from CPU memory to GPU memory)
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*/
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template<typename T>
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void operator()(T* & _data, T * & _dataTocpy, unsigned _dataSize,
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bool _HostToDevice) {
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if (_HostToDevice) {
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//copy data from CPU memory to GPU global memory
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cudaMemcpy(_data, _dataTocpy, _dataSize * sizeof(T),
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cudaMemcpyHostToDevice);
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}
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else {
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//copy data from GPU global memory to GPU memory
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cudaMemcpy(_data, _dataTocpy, _dataSize * sizeof(T),
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cudaMemcpyDeviceToHost);
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}
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}
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~moGPUCopy() {
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}
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};
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#endif
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