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the following program works fine in my pc

    #include<opencv2/gpu/gpu.hpp>
    #include <opencv2/opencv.hpp>
    using namespace std;
    using namespace cv;
    using namespace cv::gpu;
    int main(int argc, char** argv)
    {
 VideoCapture cap(0);
    if(!cap.isOpened()) return -1;
    Mat host_frame,device_frame;
    namedWindow("host ",CV_GUI_EXPANDED);
    namedWindow("device ",CV_GUI_EXPANDED);
    GpuMat device_image1,device_image2;


setDevice(0);
for(;;)
{
    cap>>host_frame;
     device_image1.upload(host_frame);

    device_image1.copyto((device_image2);  //cv::gpu::cvtColor(device_image2,device_image2,CV_BGR2GRAY);
    device_image2.download(device_frame);
    imwrite("host",host_frame);
    imwrite("device",device_frame);


       waitKey(1);
}}

but tbut when ever i call any function such as cv::gpu::cvtColor() giving parameter apropriate it compile but terminate at run time any solution to this problem thanks in advance please give me solution