ppcg host.cu

#include <assert.h>
#include <stdio.h>
#include "loopppcg_kernel.hu"
void test(int *arr) {
    {
#define cudaCheckReturn(ret) \
  do { \
    cudaError_t cudaCheckReturn_e = (ret); \
    if (cudaCheckReturn_e != cudaSuccess) { \
      fprintf(stderr, "CUDA error: %s\n", cudaGetErrorString(cudaCheckReturn_e)); \
      fflush(stderr); \
    } \
    assert(cudaCheckReturn_e == cudaSuccess); \
  } while(0)
#define cudaCheckKernel() \
  do { \
    cudaCheckReturn(cudaGetLastError()); \
  } while(0)

      int *dev_arr;

      cudaCheckReturn(cudaMalloc((void **) &dev_arr, (5) * sizeof(int)));

      {
        dim3 k0_dimBlock(5);
        dim3 k0_dimGrid(1);
        kernel0 <<<k0_dimGrid, k0_dimBlock>>> (dev_arr);
        cudaCheckKernel();
      }

      cudaCheckReturn(cudaMemcpy(arr, dev_arr, (5) * sizeof(int), cudaMemcpyDeviceToHost));
      cudaCheckReturn(cudaFree(dev_arr));
    }
}

int main(){
    int arr[] = {1, 2, 3, 4, 5};
    test(arr);
    return 1;
}