diff --git a/training/benchmarks/efficientnet/pytorch/train/trainer_adapter.py b/training/benchmarks/efficientnet/pytorch/train/trainer_adapter.py
index 2b4bc8f72..5fe3fd09d 100644
--- a/training/benchmarks/efficientnet/pytorch/train/trainer_adapter.py
+++ b/training/benchmarks/efficientnet/pytorch/train/trainer_adapter.py
@@ -10,6 +10,9 @@
 
 
 def convert_model(args, model: nn.Module) -> nn.Module:
+    if args.vendor == 'kunlunxin':
+        # not support yet
+        return model
     if utils.is_dist_avail_and_initialized() and args.sync_bn:
         model = torch.nn.SyncBatchNorm.convert_sync_batchnorm(model)
     return model
@@ -62,6 +65,9 @@ def create_optimizer(args, model):
 
 
 def model_to_fp16(args, model):
+    if args.vendor == 'kunlunxin':
+        # not support yet
+        return model
     # To prevent OOM for model sizes that cannot fit in GPU memory in full precision
     if args.fp16:
         main_proc_print(" > use fp16...")
@@ -76,6 +82,9 @@ def model_to_ddp(args, model: nn.Module) -> nn.Module:
 
 
 def create_grad_scaler(args):
+    if args.vendor == 'kunlunxin':
+        # not support yet
+        return None
     scaler = torch.cuda.amp.GradScaler() if args.amp else None
     return scaler
 
diff --git a/training/kunlunxin/efficientnet-pytorch/extern/.gitkeep b/training/kunlunxin/efficientnet-pytorch/extern/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/training/kunlunxin/efficientnet-pytorch/extern/trainer_adapter.py b/training/kunlunxin/efficientnet-pytorch/extern/trainer_adapter.py
deleted file mode 100644
index 289953195..000000000
--- a/training/kunlunxin/efficientnet-pytorch/extern/trainer_adapter.py
+++ /dev/null
@@ -1,13 +0,0 @@
-from torch import nn
-
-
-def convert_model(args, model: nn.Module) -> nn.Module:
-    return model
-
-
-def model_to_fp16(args, model):
-    return model
-
-
-def create_grad_scaler(args):
-    return None