diff --git a/llmc/compression/quantization/base_blockwise_quantization.py b/llmc/compression/quantization/base_blockwise_quantization.py
index 15c54661..694e132b 100644
--- a/llmc/compression/quantization/base_blockwise_quantization.py
+++ b/llmc/compression/quantization/base_blockwise_quantization.py
@@ -178,11 +178,12 @@ def set_quant_config(self):
         self.quant_config['weight']['tp'] = self.tp
 
         # set model config
-        self.hidden_size = self.model.model_config.hidden_size
-        self.num_heads = self.model.model_config.num_attention_heads
-        self.head_dim = self.hidden_size // self.num_heads
-        self.intermediate_size = self.model.model_config.intermediate_size
-        self.num_hidden_layers = self.model.model_config.num_hidden_layers
+        self.hidden_size = self.model.model_config.get('hidden_size')
+        self.num_heads = self.model.model_config.get('num_attention_heads')
+        self.head_dim = self.hidden_size // self.num_heads \
+            if self.hidden_size and self.num_heads else None
+        self.intermediate_size = self.model.model_config.get('intermediate_size')
+        self.num_hidden_layers = self.model.model_config.get('num_hidden_layers')
 
         # select quant module
         self.quant_type = self.quant_config.get('quant_type', 'int-quant')
diff --git a/llmc/compression/quantization/kvquant.py b/llmc/compression/quantization/kvquant.py
index 4d0d145d..5a56d173 100644
--- a/llmc/compression/quantization/kvquant.py
+++ b/llmc/compression/quantization/kvquant.py
@@ -134,17 +134,6 @@ def _calibration(self, layer_idx, key_states, value_states):
             self.calib_key_cache[layer_idx].clear()
             self.calib_value_cache[layer_idx].clear()
 
-    # def _reshape_states(self, tensor):
-    #     batch_size, num_heads, seq_len, head_dim = tensor.shape
-    #     if self.kvquant_cfg.granularity == "per_group":
-    #         group_size = self.kvquant_cfg.group_size
-    #         assert head_dim % group_size == 0
-    #         tensor = tensor.reshape(batch_size, -1, group_size)
-    #     return tensor
-
-    # def _restore_states(self, tensor, org_shape):
-    #     return tensor.view(org_shape)
-
     def _quantize(self, tensor, layer_idx, is_key):
         org_shape = tensor.shape
         tensor = self.kvquantizer.reshape_tensor(tensor)