Function gpu_getNumberOfLocalGpus

quest/src/gpu/gpu_config.cpp:177–196

int gpu_getNumberOfLocalGpus() {
#if COMPILE_CUDA

    // HIP throws an error when a CUDA API function
    // is called but no devices exist, which we handle
    int num;
    auto status = cudaGetDeviceCount(&num);

    // treat query failure as indication of no local GPUs
    // so do not call clearPossibleCudaError(). This is
    // necessary because cudaGetDeviceCount() can report
    // driver version errors when QuEST is GPU-compiled
    // on a platform without a GPU, which we tolerate
    return (status == cudaSuccess)? num : 0;

#else
    error_gpuQueriedButGpuNotCompiled();
    return -1;
#endif
}


bool gpu_isGpuAvailable() {