cuda核函数又调用核函数，多层并行

#include <stdio.h>__global__ void childKernel(int i){	int tid = blockIdx.x*blockDim.x+threadIdx.x;	printf("parent:%d,child:%d\n",i,tid);	for(int j=i;j<i+10;j++)	{		printf(",%d",j);	}	printf("\n");}__global__ void kernel(){	int tid = blockIdx.x*blockDim.x+threadIdx.x;	childKernel<<<1,2>>>(tid);}int main(){	kernel<<<1,1>>>();	cudaDeviceSynchronize();return 0;}