is_cuda SecretKey.is_cuda Is True if the secret key is stored on the GPU, False otherwise. Output boolean from desilofhe import Engine gpu_engine = Engine(mode="gpu") gpu_secret_key = gpu_engine.create_secret_key() assert gpu_secret_key.is_cuda cpu_engine = Engine(mode="cpu") cpu_secret_key = cpu_engine.create_secret_key() assert not cpu_secret_key.is_cuda