CODEWITHSUNDEEP
cudathrust
user1439690
user1439690

Reputation: 679

thrust::device_vector not working

I have written a code using Thrust. I am pasting the code and its output below. Strangely, when the device_vector line is reached during exectution the screen just hangs and no more output comes. It was working in the morning. Please help me.

#include <thrust/host_vector.h>
#include <thrust/device_vector.h>

#include <iostream>

int main(void)
{
// H has storage for 4 integers
thrust::host_vector<int> H(4);

// initialize individual elements
H[0] = 14;
H[1] = 20;
H[2] = 38;
H[3] = 46;

// H.size() returns the size of vector H
std::cout << "H has size " << H.size() << std::endl;

// print contents of H
for(size_t i = 0; i < H.size(); i++)
    std::cout << "H[" << i << "] = " << H[i] << std::endl;

// resize H
H.resize(2);

std::cout << "H now has size " << H.size() << std::endl;

// Copy host_vector H to device_vector D
thrust::device_vector<int> D = H;

// elements of D can be modified
D[0] = 99;
D[1] = 88;

// print contents of D
for(size_t i = 0; i < D.size(); i++)
    std::cout << "D[" << i << "] = " << D[i] << std::endl;

// H and D are automatically deleted when the function returns
return 0;
}

The output is : H has size 4 H[0] = 14 H[1] = 20 H[2] = 38 H[3] = 46 H now has size 2

* After this nothing happens

Upvotes: 0

Views: 325

Answers (1)

Programmer
Programmer

Reputation: 6753

Run Device Query. I am confident that if the code was working in the morning, the problem is due to the graphics card.

Upvotes: 1

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