File: prog.cc

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numpy 1%3A2.2.4%2Bds-1
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#include <cuda_runtime.h>
#include <iostream>

int cuda_devices(void) {
    int result = 0;
    cudaGetDeviceCount(&result);
    return result;
}

int main(void) {
    int n = cuda_devices();
    if (n == 0) {
        std::cout << "No CUDA hardware found. Exiting.\n";
        return 0;
    }

    std::cout << "Found " << n << " CUDA devices.\n";
    return 0;
}