Maneesh Gupta
88 строки
3.2 KiB
C++
88 строки
3.2 KiB
C++
/*
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Copyright (c) 2015-2017 Advanced Micro Devices, Inc. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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/* HIT_START
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* BUILD: %t %s ../../test_common.cpp
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* TEST: %t
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* HIT_END
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*/
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#include "test_common.h"
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#include <malloc.h>
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#define LEN 1024 * 1024
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#define SIZE LEN * sizeof(float)
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__global__ void Add(float* Ad, float* Bd, float* Cd) {
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int tx = threadIdx.x + blockIdx.x * blockDim.x;
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Cd[tx] = Ad[tx] + Bd[tx];
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}
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int main() {
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float *A, *B, *C, *D;
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float *Ad, *Bd, *Cd, *Dd;
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unsigned int FlagA, FlagB, FlagC;
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FlagA = hipHostMallocWriteCombined | hipHostMallocMapped;
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FlagB = hipHostMallocWriteCombined | hipHostMallocMapped;
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FlagC = hipHostMallocMapped;
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hipDeviceProp_t prop;
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int device;
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HIPCHECK(hipGetDevice(&device));
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HIPCHECK(hipGetDeviceProperties(&prop, device));
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if (prop.canMapHostMemory != 1) {
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std::cout << "Exiting..." << std::endl;
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}
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HIPCHECK(hipHostMalloc((void**)&A, SIZE, hipHostMallocWriteCombined | hipHostMallocMapped));
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HIPCHECK(hipHostMalloc((void**)&B, SIZE, hipHostMallocWriteCombined | hipHostMallocMapped));
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HIPCHECK(hipHostMalloc((void**)&C, SIZE, hipHostMallocMapped));
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HIPCHECK(hipHostMalloc((void**)&D, SIZE, hipHostMallocDefault));
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unsigned int flagA, flagB, flagC;
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HIPCHECK(hipHostGetDevicePointer((void**)&Ad, A, 0));
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HIPCHECK(hipHostGetDevicePointer((void**)&Bd, B, 0));
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HIPCHECK(hipHostGetDevicePointer((void**)&Cd, C, 0));
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HIPCHECK(hipHostGetDevicePointer((void**)&Dd, D, 0));
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HIPCHECK(hipHostGetFlags(&flagA, A));
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HIPCHECK(hipHostGetFlags(&flagB, B));
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HIPCHECK(hipHostGetFlags(&flagC, C));
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for (int i = 0; i < LEN; i++) {
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A[i] = 1.0f;
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B[i] = 2.0f;
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}
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dim3 dimGrid(LEN / 512, 1, 1);
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dim3 dimBlock(512, 1, 1);
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hipLaunchKernelGGL(HIP_KERNEL_NAME(Add), dimGrid, dimBlock, 0, 0, Ad, Bd, Cd);
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HIPCHECK(
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hipMemcpy(C, Cd, SIZE, hipMemcpyDeviceToHost)); // Note this really HostToHost not
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// DeviceToHost, since memory is mapped...
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HIPASSERT(C[10] == 3.0f);
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HIPASSERT(flagA == FlagA);
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HIPASSERT(flagB == FlagB);
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HIPASSERT(flagC == FlagC);
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passed();
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}
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