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61 lines
2.6 KiB
Plaintext
61 lines
2.6 KiB
Plaintext
/* 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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#include "common.h"
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///////////////////////////////////////////////////////////////////////////////
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/// \brief add two vectors of size _count_
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///
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/// CUDA kernel
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/// \param[in] op1 term one
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/// \param[in] op2 term two
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/// \param[in] count vector size
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/// \param[out] sum result
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///////////////////////////////////////////////////////////////////////////////
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__global__ void AddKernel(const float *op1, const float *op2, int count,
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float *sum) {
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const int pos = threadIdx.x + blockIdx.x * blockDim.x;
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if (pos >= count) return;
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sum[pos] = op1[pos] + op2[pos];
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}
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///////////////////////////////////////////////////////////////////////////////
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/// \brief add two vectors of size _count_
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/// \param[in] op1 term one
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/// \param[in] op2 term two
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/// \param[in] count vector size
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/// \param[out] sum result
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///////////////////////////////////////////////////////////////////////////////
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static void Add(const float *op1, const float *op2, int count, float *sum) {
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dim3 threads(256);
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dim3 blocks(iDivUp(count, threads.x));
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AddKernel<<<blocks, threads>>>(op1, op2, count, sum);
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}
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