Aditya Atluri
60 γραμμές
1.7 KiB
C++
60 γραμμές
1.7 KiB
C++
#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(hipLaunchParm lp, float *Ad, float *Bd, float *Cd){
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int tx = hipThreadIdx_x + hipBlockIdx_x * hipBlockDim_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 = hipHostAllocWriteCombined | hipHostAllocMapped;
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FlagB = hipHostAllocWriteCombined | hipHostAllocMapped;
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FlagC = hipHostAllocMapped;
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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(hipHostAlloc((void**)&A, SIZE, hipHostAllocWriteCombined | hipHostAllocMapped));
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HIPCHECK(hipHostAlloc((void**)&B, SIZE, hipHostAllocWriteCombined | hipHostAllocMapped));
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HIPCHECK(hipHostAlloc((void**)&C, SIZE, hipHostAllocMapped));
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HIPCHECK(hipHostAlloc((void**)&D, SIZE, hipHostAllocDefault));
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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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hipLaunchKernel(HIP_KERNEL_NAME(Add), dimGrid, dimBlock, 0, 0, Ad, Bd, Cd);
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HIPCHECK(hipMemcpy(C, Cd, SIZE, hipMemcpyDeviceToHost));
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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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