Update README.md

README.md

@@ -38,6 +38,7 @@ llava-dinov2-internlm2-7b-v1 | 64.0 | 65.2 | 62.9 | 61.6 | 45.3
 ```
 git clone https://github.com/InternLM/xtuner
 pip install -e ./xtuner[deepspeed]
+apt install git-lfs
 cd ./xtuner
 # Now replace the source code files with the modifed version in modified_xtuner_code directory
 ```
@@ -106,9 +107,11 @@ def process(dataset,
             use_varlen_attn=False,
             input_ids_with_output=True,
             with_image_token=False,
-            map_num_proc=32): # modify it to 1
+            map_num_proc=32): # modify it to a smaller number, e.g., 4
 ```
 
+6. If you fail to load the model, check whether you installed git-lfs and actually downloaded the model file.
+
 ## Data prepration
 1. File structure