mirror of
https://github.com/NVIDIA/cuda-samples.git
synced 2024-11-25 02:49:17 +08:00
68 lines
3.3 KiB
C++
68 lines
3.3 KiB
C++
|
/* Copyright (c) 2021, NVIDIA CORPORATION. All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* * Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* * Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* * Neither the name of NVIDIA CORPORATION nor the names of its
|
||
|
|
* contributors may be used to endorse or promote products derived
|
||
|
|
* from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
|
||
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
||
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
||
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Example of integrating CUDA functions into an existing
|
||
|
|
* application / framework.
|
||
|
|
* Reference solution computation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
// Required header to support CUDA vector types
|
||
|
|
#include <vector_types.h>
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////////
|
||
|
|
// export C interface
|
||
|
|
extern "C" void computeGold(char *reference, char *idata,
|
||
|
|
const unsigned int len);
|
||
|
|
extern "C" void computeGold2(int2 *reference, int2 *idata,
|
||
|
|
const unsigned int len);
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////////
|
||
|
|
//! Compute reference data set
|
||
|
|
//! Each element is multiplied with the number of threads / array length
|
||
|
|
//! @param reference reference data, computed but preallocated
|
||
|
|
//! @param idata input data as provided to device
|
||
|
|
//! @param len number of elements in reference / idata
|
||
|
|
////////////////////////////////////////////////////////////////////////////////
|
||
|
|
void computeGold(char *reference, char *idata, const unsigned int len) {
|
||
|
|
for (unsigned int i = 0; i < len; ++i) reference[i] = idata[i] - 10;
|
||
|
|
}
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////////
|
||
|
|
//! Compute reference data set for int2 version
|
||
|
|
//! Each element is multiplied with the number of threads / array length
|
||
|
|
//! @param reference reference data, computed but preallocated
|
||
|
|
//! @param idata input data as provided to device
|
||
|
|
//! @param len number of elements in reference / idata
|
||
|
|
////////////////////////////////////////////////////////////////////////////////
|
||
|
|
void computeGold2(int2 *reference, int2 *idata, const unsigned int len) {
|
||
|
|
for (unsigned int i = 0; i < len; ++i) {
|
||
|
|
reference[i].x = idata[i].x - idata[i].y;
|
||
|
|
reference[i].y = idata[i].y;
|
||
|
|
}
|
||
|
|
}
|