blob: bb72471440e6b09a2237b8c41e8f6f75dd65f66a [file] [log] [blame]
#include <iostream>
#include "cuda.h"
int launch_kernel(int x);
int choose_cuda_device()
{
int nDevices = 0;
cudaError_t err = cudaGetDeviceCount(&nDevices);
if (err != cudaSuccess) {
std::cerr << "Failed to retrieve the number of CUDA enabled devices"
<< std::endl;
return 1;
}
for (int i = 0; i < nDevices; ++i) {
cudaDeviceProp prop;
cudaError_t err = cudaGetDeviceProperties(&prop, i);
if (err != cudaSuccess) {
std::cerr << "Could not retrieve properties from CUDA device " << i
<< std::endl;
return 1;
}
std::cout << "prop.major: " << prop.major << std::endl;
err = cudaSetDevice(i);
if (err != cudaSuccess) {
std::cout << "Could not select CUDA device " << i << std::endl;
} else {
return 0;
}
}
std::cout << "Could not find a CUDA enabled card" << std::endl;
return 1;
}
int main()
{
int ret = choose_cuda_device();
if (ret) {
return 0;
}
cudaError_t err;
launch_kernel(1);
err = cudaGetLastError();
if (err != cudaSuccess) {
std::cerr << "launch_kernel: kernel launch should have passed.\n "
"Error message: "
<< cudaGetErrorString(err) << std::endl;
return 1;
}
return 0;
}