fix autoconvert (#37347)

* fix autoconvert

* fix merge parameter

python/paddle/distributed/auto_parallel/utils.py

@@ -642,7 +642,7 @@ def _load_distributed_state_dict(checkpoint_path):
     """ Load parameters' state_dict from checkpoint_path """
     all_state_dict = {}
     for idx, ckpt_file in enumerate(checkpoint_path):
-        state_dict_info = paddle.load(ckpt_file)
+        state_dict_info = paddle.load(ckpt_file, return_numpy=True)
         pre_world_size = state_dict_info["world_size"]
         assert pre_world_size == len(checkpoint_path), \
             "The number of 'checkpoint_path' must be equal to the last training world size."
@@ -778,12 +778,16 @@ def _merge_parameter_with_dist_attr(param_list, dist_attr):
                                              dims_mapping)
     # merge the parameter with dist_attr
     partition_param_list = []
+    merged_partiton = []
     for process in process_group:
         partition_index = _compute_partition_index(
             process, complete_shape, dims_mapping, process_shape, process_group)
         index = process_group.index(process)
-        _merge_parameter(partition_param_list, param_list[index],
-                         partition_index)
+        if partition_index not in merged_partiton:
+            merged_partiton.append(partition_index)
+            _merge_parameter(partition_param_list, param_list[index],
+                             partition_index, complete_shape)
+
     assert len(partition_param_list) == 1 or not partition_param_list, \
         "Fail to merge parameter"
     complete_param = _to_LodTensor(partition_param_list[0][0])
@@ -810,7 +814,8 @@ def _slice_parameter_with_dist_attr(param, dist_attr):
     return sliced_param
 
 
-def _merge_parameter(partition_param_list, param, partition_index):
+def _merge_parameter(partition_param_list, param, partition_index,
+                     complete_shape):
     """
     Merge partitial parameters to a complete one.
 
@@ -830,16 +835,23 @@ def _merge_parameter(partition_param_list, param, partition_index):
     """
     from .reshard import _compute_concat_info
 
+    if len(partition_param_list) == 1:
+        is_complete_data = True
+        for idx, item in enumerate(partition_param_list[0][1]):
+            if item[0] != 0 or item[1] != complete_shape[idx]:
+                is_complete_data = False
+                break
+        if is_complete_data:
+            return
+
     if not partition_param_list:
         partition_param_list.append((param, partition_index))
     else:
         i = 0
-        has_concat = False
         while i < len(partition_param_list):
             concat_axis, first_order, new_partition = _compute_concat_info(
                 partition_param_list[i][1], partition_index)
             if concat_axis != -1:
-                has_concat = True
                 if first_order == 0:
                     new_param = np.concatenate(
                         (partition_param_list[i][0], param), axis=concat_axis)
@@ -848,19 +860,11 @@ def _merge_parameter(partition_param_list, param, partition_index):
                         (param, partition_param_list[i][0]), axis=concat_axis)
 
                 partition_param_list.pop(i)
-                _merge_parameter(partition_param_list, new_param, new_partition)
+                _merge_parameter(partition_param_list, new_param, new_partition,
+                                 complete_shape)
                 break
             i += 1
 
-        if not has_concat:
-            need_append = True
-            for i in range(len(partition_param_list)):
-                if partition_index == partition_param_list[i][1]:
-                    need_append = False
-                    break
-            if need_append:
-                partition_param_list.append((param, partition_index))
-
 
 def _slice_parameter(complete_param, partition_index_list, length):
     """