def main()

in scripts/super_res_sample.py [0:0]

• 45 lines of code
• 8 McCabe index (conditional complexity)

def main():
    args = create_argparser().parse_args()

    dist_util.setup_dist()
    logger.configure()

    logger.log("creating model...")
    model, diffusion = sr_create_model_and_diffusion(
        **args_to_dict(args, sr_model_and_diffusion_defaults().keys())
    )
    model.load_state_dict(
        dist_util.load_state_dict(args.model_path, map_location="cpu")
    )
    model.to(dist_util.dev())
    if args.use_fp16:
        model.convert_to_fp16()
    model.eval()

    logger.log("loading data...")
    data = load_data_for_worker(args.base_samples, args.batch_size, args.class_cond)

    logger.log("creating samples...")
    all_images = []
    while len(all_images) * args.batch_size < args.num_samples:
        model_kwargs = next(data)
        model_kwargs = {k: v.to(dist_util.dev()) for k, v in model_kwargs.items()}
        sample = diffusion.p_sample_loop(
            model,
            (args.batch_size, 3, args.large_size, args.large_size),
            clip_denoised=args.clip_denoised,
            model_kwargs=model_kwargs,
        )
        sample = ((sample + 1) * 127.5).clamp(0, 255).to(th.uint8)
        sample = sample.permute(0, 2, 3, 1)
        sample = sample.contiguous()

        all_samples = [th.zeros_like(sample) for _ in range(dist.get_world_size())]
        dist.all_gather(all_samples, sample)  # gather not supported with NCCL
        for sample in all_samples:
            all_images.append(sample.cpu().numpy())
        logger.log(f"created {len(all_images) * args.batch_size} samples")

    arr = np.concatenate(all_images, axis=0)
    arr = arr[: args.num_samples]
    if dist.get_rank() == 0:
        shape_str = "x".join([str(x) for x in arr.shape])
        out_path = os.path.join(logger.get_dir(), f"samples_{shape_str}.npz")
        logger.log(f"saving to {out_path}")
        np.savez(out_path, arr)

    dist.barrier()
    logger.log("sampling complete")