fix bugs for sd3 controlnet training (#9489)

Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
Co-authored-by: YiYi Xu <yixu310@gmail.com>

examples/controlnet/train_controlnet_sd3.py

@@ -31,7 +31,7 @@ import torch.utils.checkpoint
 import transformers
 from accelerate import Accelerator
 from accelerate.logging import get_logger
-from accelerate.utils import ProjectConfiguration, set_seed
+from accelerate.utils import DistributedDataParallelKwargs, ProjectConfiguration, set_seed
 from datasets import load_dataset
 from huggingface_hub import create_repo, upload_folder
 from packaging import version
@@ -899,12 +899,13 @@ def main(args):
     logging_dir = Path(args.output_dir, args.logging_dir)
 
     accelerator_project_config = ProjectConfiguration(project_dir=args.output_dir, logging_dir=logging_dir)
-
+    kwargs = DistributedDataParallelKwargs(find_unused_parameters=True)
     accelerator = Accelerator(
         gradient_accumulation_steps=args.gradient_accumulation_steps,
         mixed_precision=args.mixed_precision,
         log_with=args.report_to,
         project_config=accelerator_project_config,
+        kwargs_handlers=[kwargs],
     )
 
     # Disable AMP for MPS.