diff --git a/colossalai/shardformer/layer/loss.py b/colossalai/shardformer/layer/loss.py
index c4cf3fb85..134558b6a 100644
--- a/colossalai/shardformer/layer/loss.py
+++ b/colossalai/shardformer/layer/loss.py
@@ -110,4 +110,6 @@ class DistCrossEntropy(Function):
 def cross_entropy_1d(
     vocab_logits: torch.Tensor, labels: torch.Tensor, ignore_index: int = -100, process_group: ProcessGroup = None
 ) -> torch.Tensor:
+
     return DistCrossEntropy.apply(vocab_logits, labels, ignore_index, process_group)
+
diff --git a/colossalai/shardformer/modeling/llama.py b/colossalai/shardformer/modeling/llama.py
index b9342df04..60bc8b711 100644
--- a/colossalai/shardformer/modeling/llama.py
+++ b/colossalai/shardformer/modeling/llama.py
@@ -24,10 +24,7 @@ from transformers.models.llama.modeling_llama import (
 from transformers.utils import logging
 
 from colossalai.pipeline.stage_manager import PipelineStageManager
-from colossalai.shardformer.layer._operation import (
-    gather_forward_split_backward,
-    split_forward_gather_backward,
-)
+from colossalai.shardformer.layer._operation import gather_forward_split_backward, split_forward_gather_backward
 from colossalai.shardformer.shard import ShardConfig
 
 from ..layer import ColoAttention, cross_entropy_1d
@@ -564,7 +561,7 @@ def get_llama_flash_attention_forward(shard_config, sp_mode=None, sp_size=None,
         # sp: all-to-all comminucation when introducing sequence parallel
         if sp_mode == "all_to_all":
             attn_output = attn_output.reshape(bsz, q_len, self.num_heads * self.head_dim)
-            #attn_output = all_to_all_comm(attn_output, sp_group, scatter_dim=1, gather_dim=2)
+            # attn_output = all_to_all_comm(attn_output, sp_group, scatter_dim=1, gather_dim=2)
         else:
             attn_output = attn_output.reshape(bsz, q_len, self.hidden_size)
 
@@ -824,4 +821,4 @@ def get_lm_forward_with_dist_cross_entropy(shard_config: ShardConfig):
             attentions=outputs.attentions,
         )
 
-    return forward
\ No newline at end of file
+    return forward