cuda上使用printf函数

code：

#include <stdio.h>

__global__ void helloCUDA(float f)
{
  printf("Hello thread %d, f=%f\n", threadIdx.x, f);
}

int main()
{
  helloCUDA<<<1, 5>>>(1.2345f);
  cudaDeviceReset();
  return 0;
}

设置：

打开vs项目属性图，将code generation设置为compute_20,sm_20。否则，报如下错误：calling a __host__ function("printf") from a __global__ function("kk") is not allowed