diff --git a/README.md b/README.md
index 1bbedfc..0d26ea0 100644
--- a/README.md
+++ b/README.md
@@ -211,7 +211,7 @@ docker run -ti --gpus all -v {MOUNT_DIR}:/data opensora
 | Model     | Model Size | Data | #iterations | Batch Size | URL                                                           |
 | --------- | ---------- | ---- | ----------- | ---------- | ------------------------------------------------------------- |
 | Diffusion | 1.1B       | 30M  | 70k         | Dynamic    | [:link:](https://huggingface.co/hpcai-tech/OpenSora-STDiT-v3) |
-| VAE       | 384M       | 3M   | 1.18M       |     8      | [:link:](https://huggingface.co/hpcai-tech/OpenSora-VAE-v1.2) |
+| VAE       | 384M       | 3M   | 1.18M       | 8          | [:link:](https://huggingface.co/hpcai-tech/OpenSora-VAE-v1.2) |
 
 See our **[report 1.2](docs/report_03.md)** for more infomation.
 
@@ -327,6 +327,15 @@ python scripts/inference.py configs/opensora-v1-2/inference/sample.py \
 
 For image to video generation and other functionalities, the API is compatible with Open-Sora 1.1. See [here](docs/commands.md) for more instructions.
 
+If your installation do not contain `apex` and `flash-attn`, you need to disable them in the config file, or via the folowing command.
+
+```bash
+python scripts/inference.py configs/opensora-v1-2/inference/sample.py \
+  --num-frames 4s --resolution 720p \
+  --layernorm-kernel False --flash-attn False \
+  --prompt "a beautiful waterfall"
+```
+
 ### GPT-4o Prompt Refinement
 
 We find that GPT-4o can refine the prompt and improve the quality of the generated video. With this feature, you can also use other language (e.g., Chinese) as the prompt. To enable this feature, you need prepare your openai api key in the environment:
diff --git a/opensora/utils/config_utils.py b/opensora/utils/config_utils.py
index f854124..f20138b 100644
--- a/opensora/utils/config_utils.py
+++ b/opensora/utils/config_utils.py
@@ -28,6 +28,7 @@ def parse_args(training=False):
     parser.add_argument("--layernorm-kernel", default=None, type=str2bool, help="enable layernorm kernel")
     parser.add_argument("--resolution", default=None, type=str, help="multi resolution")
     parser.add_argument("--data-path", default=None, type=str, help="path to data csv")
+    parser.add_argument("--dtype", default=None, type=str, help="data type")
 
     # ======================================================
     # Inference