to avoid cause issues for unset no_weight_decay models.

there seems be a diff for optimizer about using [] and [{"params":}, {"params":}] params

ppcls/optimizer/optimizer.py

@@ -113,6 +113,8 @@ class Momentum(object):
         # model_list is None in static graph
         parameters = None
         if model_list:
+            # TODO(gaotingquan): to avoid cause issues for unset no_weight_decay models
+            if len(self.no_weight_decay_name_list) > 0:
                 params_with_decay = []
                 params_without_decay = []
                 for m in model_list:
@@ -129,6 +131,8 @@ class Momentum(object):
                     "params": params_without_decay,
                     "weight_decay": 0.0
                 }]
+            else:
+                parameters = sum([m.parameters() for m in model_list], [])
         opt = optim.Momentum(
             learning_rate=self.learning_rate,
             momentum=self.momentum,
@@ -279,9 +283,8 @@ class AdamW(object):
 
         if self.one_dim_param_no_weight_decay:
             self.no_weight_decay_param_name_list += [
-                p.name
-                for model in model_list for n, p in model.named_parameters()
-                if len(p.shape) == 1
+                p.name for model in model_list
+                for n, p in model.named_parameters() if len(p.shape) == 1
             ] if model_list else []
 
         opt = optim.AdamW(