Function getBoundGpuUuid

quest/src/gpu/gpu_config.cpp:334–367

std::array<char,17> getBoundGpuUuid() {
#if COMPILE_CUDA
    assert_gpuHasBeenBound(hasGpuBeenBound);

    constexpr int numUuidChars = 16;
    constexpr int numOutChars = numUuidChars + 1; // terminal char

    std::array<char,numOutChars> out;
    cudaUUID_t uuid;

    // ROCm v5's cudaDeviceProp doesn't have a uuid field
    #if defined(__HIP__)
        hipDevice_t device;
        CUDA_CHECK( hipDeviceGet(&device, getBoundGpuId()) );
        CUDA_CHECK( hipDeviceGetUuid(&uuid, device) );
    #else
        cudaDeviceProp prop;
        CUDA_CHECK( cudaGetDeviceProperties(&prop, getBoundGpuId()) );
        uuid = prop.uuid;
    #endif

    // copy char[16] to out[17] (not human readable)
    std::copy_n(uuid.bytes, numUuidChars, out.begin());

    // include terminal char so that subsequent to-string
    // operations will succeed without knowing string length
    out[numOutChars-1] = '\0';
    return out;

#else
    error_gpuQueriedButGpuNotCompiled();
    return {};
#endif
}


void gpu_bindLocalGPUsToNodes() {