cherry pick empty cache. (PaddlePaddle#7868)

Author: ZHUI

paddlenlp/trainer/plugins/unified_checkpoint.py

@@ -156,6 +156,8 @@ def save_unified_checkpoint(args, model, optimizer, output_dir, safe_serializati
     if args.should_save:
         config_to_save.save_pretrained(save_directory)
 
+    paddle.device.cuda.empty_cache()
+
 
 def load_unified_checkpoint(args, model, optimizer, resume_from_checkpoint: str, safe_serialization=False) -> None:
     """Load potential model checkpoint
@@ -281,6 +283,7 @@ def unified_checkpoint_into_shards(
     Returns:
         tuple: state_dict, config, shard_file: file name, sharded_index: map for weight to file name.
     """
+    paddle.device.cuda.empty_cache()
     assert hasattr(model_to_save, "config")
 
     state_dict = model_to_save.state_dict()
@@ -311,6 +314,8 @@ def unified_checkpoint_into_shards(
         total_size_list,
     )
 
+    paddle.device.cuda.empty_cache()
+
     return state_dict, shard_file, sharded_index
 
 
@@ -333,6 +338,8 @@ def save_unified_optimizer(args, model, optimizer, output_dir, safe_serializatio
         optim_state_dict, shard_optim_file, sharded_optim_index = results[0]
         master_weight_state_dict, shard_master_weight_file, sharded_master_weight_index = results[1]
 
+    paddle.device.cuda.empty_cache()
+
     save_directory = output_dir
     os.makedirs(save_directory, exist_ok=True)
 
@@ -514,6 +521,7 @@ def unified_optimizer_into_shards(
         optimizer (Optimizer): optimizer to save.
         safe_serialization (bool, optional): safe serialization using safetensors. Defaults to False.
     """
+    paddle.device.cuda.empty_cache()
     optim_state_dict = nested_copy(optimizer.state_dict())
     master_weights = None
     if "master_weights" in optim_state_dict.keys():
@@ -559,12 +567,15 @@ def unified_optimizer_into_shards(
             tp_actions,
             filter_optim_keys,
         )
+        paddle.device.cuda.empty_cache()
+
         if master_weights is not None:
             master_weights = merge_tensor_parallel_for_optimizer(
                 master_weights,
                 tp_actions,
                 filter_master_keys,
             )
+            paddle.device.cuda.empty_cache()
 
     # build index json file
     index_optimizer_file, index_master_weight_file = {}, {}
@@ -601,6 +612,7 @@ def unified_optimizer_into_shards(
         else:
             sharded_optim_index["master_weights"] = False
 
+    paddle.device.cuda.empty_cache()
     if master_weights is None:
         return [(optim_state_dict, shard_optimizer_file, sharded_optim_index)]
     else:

paddlenlp/trainer/training_args.py

@@ -1309,7 +1309,7 @@ def is_segment_parallel_supported():
                 self.unified_checkpoint_config = [
                     "skip_save_model_weight",
                     "master_weight_compatible",
-                    "async_save",
+                    # "async_save",
                 ]
             else:
                 self.unified_checkpoint_config = self.unified_checkpoint_config.split(" ")