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52 lines
2.0 KiB
52 lines
2.0 KiB
/* |
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* |
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* atomicFloat.cu |
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* |
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* Microdemo for atomic floating point addition in global memory. |
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* |
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* NOT INTENDED AS A SAMPLE FOR ANYTHING OTHER THAN CODE GENERATION. |
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* |
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* Build with: |
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* nvcc --gpu-architecture sm_20 --cubin atomicFloat.cu |
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* cuobjdump --dump-sass atomicFloat.cubin |
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* |
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* Copyright (c) 2011-2012, Archaea Software, LLC. |
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* 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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* |
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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__global__ void |
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AddToFloat( float *sum, float *out, const float *pIn ) |
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{ |
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(void) atomicAdd( &out[threadIdx.x], pIn[threadIdx.x] ); |
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} |
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__global__ void |
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ReturnFloat( float *sum, float *out, const float *pIn ) |
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{ |
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out[threadIdx.x] = atomicAdd( &out[threadIdx.x], pIn[threadIdx.x] ); |
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}
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