Maneesh Gupta
45 lines
1011 B
C++
45 lines
1011 B
C++
#include <iostream>
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#include "hip/hip_runtime.h"
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#include "hip/hip_runtime_api.h"
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#define LEN 1024
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#define SIZE LEN << 2
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int main() {
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int *A, *B;
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hipDeviceptr_t Ad, Bd;
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A = new int[LEN];
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B = new int[LEN];
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for (int i = 0; i < LEN; i++) {
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A[i] = i;
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}
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hipMalloc((void**)&Ad, SIZE);
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hipMalloc((void**)&Bd, SIZE);
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hipMemcpyHtoD(Ad, A, SIZE);
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hipMemcpyDtoD(Bd, Ad, SIZE);
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hipMemcpyDtoH(B, Bd, SIZE);
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for (int i = 0; i < 16; i++) {
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std::cout << A[i] << " " << B[i] << std::endl;
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}
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int *Ah, *Bh;
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hipHostMalloc(&Ah, SIZE, 0);
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hipHostMalloc(&Bh, SIZE, 0);
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memcpy(Ah, A, SIZE);
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hipStream_t stream;
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hipStreamCreate(&stream);
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hipMemcpyHtoDAsync(Ad, Ah, SIZE, stream);
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hipStreamSynchronize(stream);
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hipMemcpyDtoDAsync(Bd, Ad, SIZE, stream);
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hipStreamSynchronize(stream);
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hipMemcpyDtoHAsync(Bh, Bd, SIZE, stream);
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hipStreamSynchronize(stream);
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std::cout << Ah[10] << " " << Bh[10] << std::endl;
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}
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