cuda simple application working for 32 bit not for 64 bit

问题

My simple cuda helloworld application runs fine when built in 32 bit using visual studio 2015 community on windows 10. However, if I build it in 64 bit, it is not executed

GPU: Telsa K40c

ToolKit: CUDA 8

Operating System: windows 10 64bit

Visual Studio: community edition.

there is no error message in output console.

#include "cuda_runtime.h"
#include "device_launch_parameters.h"
#include<stdio.h>
__global__ void welcome() {
printf("Hello world :)");
}

int main() {
welcome << <1, 1 >> > ();
cudaDeviceSynchronize();
return 0;
}