diff --git a/README.md b/README.md
index 74afe9d..623628d 100644
--- a/README.md
+++ b/README.md
@@ -283,12 +283,20 @@ python app/hydit_app.py --infer-mode fa
 # The enhancement will be unavailable until you restart the app without the `--no-enhance` flag. 
 python app/hydit_app.py --no-enhance
 
+# You can specify the device for HunyuanDiT inference and DialogGen inference respectively,
+# with `--device` and `--enhance-device` flag.
+python app/hydit_app.py --device cuda:0 --enhance-device cuda:1
+python app/hydit_app.py --device xpu:0 --enhance-device xpu:1 # Intel GPU
+
 # Start with English UI
 python app/hydit_app.py --lang en
 
 # Start a multi-turn T2I generation UI. 
 # If your GPU memory is less than 32GB, use '--load-4bit' to enable 4-bit quantization, which requires at least 22GB of memory.
 python app/multiTurnT2I_app.py
+# Using multiple GPU devices.
+python app/multiTurnT2I_app.py --device cuda:0 --enhance-device cuda:1 --load-4bit
+python app/multiTurnT2I_app.py --device xpu:0 --enhance-device xpu:1 --load-4bit # Intel GPU
 ```
 Then the demo can be accessed through http://0.0.0.0:443
 
diff --git a/dialoggen/dialoggen_demo.py b/dialoggen/dialoggen_demo.py
index 581fc03..383b502 100644
--- a/dialoggen/dialoggen_demo.py
+++ b/dialoggen/dialoggen_demo.py
@@ -50,10 +50,10 @@ def load_images(image_files):
     return out
 
 
-def init_dialoggen_model(model_path, model_base=None, load_4bit=False):
+def init_dialoggen_model(model_path, model_base=None, device="cuda", load_4bit=False):
     model_name = get_model_name_from_path(model_path)
     tokenizer, model, image_processor, context_len = load_pretrained_model(
-        model_path, model_base, model_name, llava_type_model=True, load_4bit=load_4bit)
+        model_path, model_base, model_name, llava_type_model=True, load_4bit=load_4bit, device=device)
     return {"tokenizer": tokenizer,
             "model": model,
             "image_processor": image_processor}
@@ -117,7 +117,7 @@ def eval_model(models,
     input_ids = (
         tokenizer_image_token(prompt, models["tokenizer"], IMAGE_TOKEN_INDEX, return_tensors="pt")
         .unsqueeze(0)
-        .cuda()
+        .to(models["model"].device)
     )
     with torch.inference_mode():
         output_ids = models["model"].generate(
@@ -149,8 +149,8 @@ def remove_prefix(text):
 
 
 class DialogGen(object):
-    def __init__(self, model_path, load_4bit=False):
-        self.models = init_dialoggen_model(model_path, load_4bit=load_4bit)
+    def __init__(self, model_path, device="cuda", load_4bit=False):
+        self.models = init_dialoggen_model(model_path, device=device, load_4bit=load_4bit)
         self.query_template = "请先判断用户的意图，若为画图则在输出前加入<画图>:{}"
 
     def __call__(self, prompt, return_history=False, history=None, skip_special=False):
@@ -176,11 +176,13 @@ def __call__(self, prompt, return_history=False, history=None, skip_special=Fals
     parser.add_argument('--model_path', type=str, default='./ckpts/dialoggen')
     parser.add_argument('--prompt', type=str, default='画一只小猫')
     parser.add_argument('--image_file', type=str, default=None) # 'images/demo1.jpeg'
+    parser.add_argument("--enhance-device", type=str, default="cuda", help="Device for DialogGen model inference.")
+    parser.add_argument("--load-4bit", help="load DialogGen model with 4bit quantization.", action="store_true")
     args = parser.parse_args()
 
     query = f"请先判断用户的意图，若为画图则在输出前加入<画图>:{args.prompt}"
 
-    models = init_dialoggen_model(args.model_path)
+    models = init_dialoggen_model(args.model_path, device=args.enhance_device, load_4bit=args.load_4bit)
 
     res = eval_model(models,
         query=query,
diff --git a/dialoggen/llava/model/builder.py b/dialoggen/llava/model/builder.py
index 263d5d1..913fc16 100644
--- a/dialoggen/llava/model/builder.py
+++ b/dialoggen/llava/model/builder.py
@@ -17,13 +17,23 @@
 import warnings
 import shutil
 
-from transformers import AutoTokenizer, AutoModelForCausalLM, AutoConfig, BitsAndBytesConfig
+import transformers
+from transformers import AutoTokenizer, AutoConfig, BitsAndBytesConfig
 import torch
 from llava.model import *
 from llava.constants import DEFAULT_IMAGE_PATCH_TOKEN, DEFAULT_IM_START_TOKEN, DEFAULT_IM_END_TOKEN
 
 
 def load_pretrained_model(model_path, model_base, model_name, load_8bit=False, load_4bit=False, device_map="auto", device="cuda", use_flash_attn=False, llava_type_model=True, **kwargs):
+    AutoModelForCausalLM = transformers.AutoModelForCausalLM
+    if "xpu" in device and (load_8bit or load_4bit):
+        try:
+            import ipex_llm.transformers
+            AutoModelForCausalLM = ipex_llm.transformers.AutoModelForCausalLM
+        except ImportError:
+            raise ImportError("""Please install the ipex_llm package to load 8bit/4bit models on XPU.
+    pip install --pre ipex-llm[xpu]""")
+
     kwargs = {"device_map": device_map, **kwargs}
 
     if device != "cuda":
@@ -32,12 +42,16 @@ def load_pretrained_model(model_path, model_base, model_name, load_8bit=False, l
         kwargs['load_in_8bit'] = True
     elif load_4bit:
         kwargs['load_in_4bit'] = True
-        kwargs['quantization_config'] = BitsAndBytesConfig(
-            load_in_4bit=True,
-            bnb_4bit_compute_dtype=torch.float16,
-            bnb_4bit_use_double_quant=True,
-            bnb_4bit_quant_type='nf4'
-        )
+        if "cuda" in device:
+            kwargs['quantization_config'] = BitsAndBytesConfig(
+                load_in_4bit=True,
+                bnb_4bit_compute_dtype=torch.float16,
+                bnb_4bit_use_double_quant=True,
+                bnb_4bit_quant_type='nf4'
+            )
+        if "xpu" in device:
+            kwargs['torch_dtype'] = torch.float16
+            kwargs['modules_to_not_convert'] = ['lm_head', 'mm_projector']
     else:
         kwargs['torch_dtype'] = torch.float16
 
@@ -163,4 +177,5 @@ def load_from_hf(repo_id, filename, subfolder=None):
     else:
         context_len = 2048
 
+    model = model.to(device=device)
     return tokenizer, model, image_processor, context_len
diff --git a/hydit/config.py b/hydit/config.py
index 2a731c0..0750e99 100644
--- a/hydit/config.py
+++ b/hydit/config.py
@@ -26,12 +26,14 @@ def get_args(default_args=None):
     parser.add_argument("--cfg-scale", type=float, default=6.0, help="Guidance scale for classifier-free.")
 
     # Prompt enhancement
+    parser.add_argument("--enhance-device", type=str, default="cuda", help="Device for DialogGen model inference.")
     parser.add_argument("--enhance", action="store_true", help="Enhance prompt with dialoggen.")
     parser.add_argument("--no-enhance", dest="enhance", action="store_false")
     parser.add_argument("--load-4bit", help="load DialogGen model with 4bit quantization.", action="store_true")
     parser.set_defaults(enhance=True)
 
     # Diffusion
+    parser.add_argument("--device", type=str, default="cuda", help="Device for diffusion model inference")
     parser.add_argument("--learn-sigma", action="store_true", help="Learn extra channels for sigma.")
     parser.add_argument("--no-learn-sigma", dest="learn_sigma", action="store_false")
     parser.set_defaults(learn_sigma=True)
diff --git a/hydit/inference.py b/hydit/inference.py
index 7751ffb..a9698fa 100644
--- a/hydit/inference.py
+++ b/hydit/inference.py
@@ -4,6 +4,10 @@
 
 import numpy as np
 import torch
+try:
+    import intel_extension_for_pytorch as ipex
+except ImportError:
+    ipex = None
 
 # For reproducibility
 # torch.backends.cudnn.benchmark = False
@@ -159,7 +163,7 @@ def __init__(self, args, models_root_path):
         logger.info(f"Got text-to-image model root path: {t2i_root_path}")
 
         # Set device and disable gradient
-        self.device = "cuda" if torch.cuda.is_available() else "cpu"
+        self.device = args.device
         torch.set_grad_enabled(False)
         # Disable BertModel logging checkpoint info
         tf_logger.setLevel('ERROR')
@@ -179,7 +183,7 @@ def __init__(self, args, models_root_path):
         # ========================================================================
         logger.info(f"Loading T5 Text Encoder and T5 Tokenizer...")
         t5_text_encoder_path = self.root / 'mt5'
-        embedder_t5 = MT5Embedder(t5_text_encoder_path, torch_dtype=torch.float16, max_length=256)
+        embedder_t5 = MT5Embedder(t5_text_encoder_path, torch_dtype=torch.float16, max_length=256).to(self.device)
         self.embedder_t5 = embedder_t5
         logger.info(f"Loading t5_text_encoder and t5_tokenizer finished")
 
diff --git a/sample_t2i.py b/sample_t2i.py
index f017839..9f330d9 100644
--- a/sample_t2i.py
+++ b/sample_t2i.py
@@ -19,7 +19,7 @@ def inferencer():
     # Try to enhance prompt
     if args.enhance:
         logger.info("Loading DialogGen model (for prompt enhancement)...")
-        enhancer = DialogGen(str(models_root_path / "dialoggen"), args.load_4bit)
+        enhancer = DialogGen(str(models_root_path / "dialoggen"), device=args.enhance_device, load_4bit=args.load_4bit)
         logger.info("DialogGen model loaded.")
     else:
         enhancer = None