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https://github.com/NVIDIA/cuda-samples.git
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61 lines
2.7 KiB
C++
61 lines
2.7 KiB
C++
/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of NVIDIA CORPORATION nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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////////////////////////////////////////////////////////////////////////////////
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// export C interface
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extern "C"
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void computeGold(float *, const float *, const float *, unsigned int, unsigned int, unsigned int);
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////////////////////////////////////////////////////////////////////////////////
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//! Compute reference data set
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//! C = A * B
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//! @param C reference data, computed but preallocated
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//! @param A matrix A as provided to device
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//! @param B matrix B as provided to device
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//! @param hA height of matrix A
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//! @param wB width of matrix B
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////////////////////////////////////////////////////////////////////////////////
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void
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computeGold(float *C, const float *A, const float *B, unsigned int hA, unsigned int wA, unsigned int wB)
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{
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for (unsigned int i = 0; i < hA; ++i)
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for (unsigned int j = 0; j < wB; ++j)
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{
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double sum = 0;
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for (unsigned int k = 0; k < wA; ++k)
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{
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double a = A[i * wA + k];
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double b = B[k * wB + j];
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sum += a * b;
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}
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C[i * wB + j] = (float)sum;
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}
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}
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