test_curand.cu

#include <iostream>
#include <cuda.h>
#include <curand.h>
#include <curand_kernel.h>

using namespace std;

int main() {
    curandGenerator_t genGPU;
    curandCreateGenerator(&genGPU, CURAND_RNG_PSEUDO_MTGP32);
    curandSetPseudoRandomGeneratorSeed(genGPU, 1234ULL);
    //curandSetGeneratorOffset(genGPU, 0);

    const int n = 10;
    double GPU[n];

    double* d_GPU;
    cudaMalloc(&d_GPU, n*sizeof(float));

    curandGenerateUniformDouble(genGPU, d_GPU, n);
    cudaMemcpy(GPU, d_GPU, n*sizeof(float), cudaMemcpyDeviceToHost);

    double GPU2[n];

    double* d_GPU2;
    cudaMalloc(&d_GPU2, n*sizeof(float));

    //curandSetGeneratorOffset(genGPU, 0);
    //curandDestroyGenerator(genGPU);
    //curandCreateGenerator(&genGPU, CURAND_RNG_PSEUDO_DEFAULT);
    
    curandSetPseudoRandomGeneratorSeed(genGPU, 1234ULL);
    //curandSetGeneratorOffset(genGPU, 0);
    

    curandGenerateUniformDouble(genGPU, d_GPU2, n);
    cudaMemcpy(GPU2, d_GPU2, n*sizeof(float), cudaMemcpyDeviceToHost);

    for ( int i = 0; i < n; ++i ) {
        cout << GPU[i] << "\t\t" << GPU2[i] << endl;
    }

    curandDestroyGenerator(genGPU);
    cudaFree(d_GPU);
    cudaFree(d_GPU2);

    return EXIT_SUCCESS;
}