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// Copyright (c) 2012-2017 VideoStitch SAS
// Copyright (c) 2018 stitchEm
#include <cstdio>
int main() {
int devices;
cudaError_t err = cudaGetDeviceCount(&devices);
if (err != cudaSuccess) {
fprintf(stderr, "cudaGetDeviceCount failed: %s\n", cudaGetErrorString(err));
return 1;
}
if (devices == 0) {
fprintf(stderr, "No CUDA device found!\n");
return 1;
}
cudaDeviceProp props_1;
cudaDeviceProp props_2;
for (int i = 0; i < devices; ++i) {
props_2 = props_1;
err = cudaGetDeviceProperties(&props_1, i);
if (err != cudaSuccess) {
fprintf(stderr, "cudaGetDeviceProperties failed: %s\n", cudaGetErrorString(err));
return 1;
}
if (i > 0 && (props_1.major != props_2.major || props_1.minor != props_2.minor)) {
fprintf(stderr, "Multiple CUDA arch not supported at the moment\n");
return 1;
}
}
printf("CUDA compute capability: %d%d", props_1.major, props_1.minor);
// Easiest cross-platform way to pass the number seems to be the exit code
// nvcc --run on windows seems to print the filename through cl.exe (that can't be silenced)
return props_1.major * 10 + props_1.minor;
}