Change torch.xpu to ipex.optimize, xpu device initialization and remo…

…ve workaround for text node issue from older IPEX. (#3388)

comfy/model_management.py

@@ -83,7 +83,7 @@ def get_torch_device():
         return torch.device("cpu")
     else:
         if is_intel_xpu():
-            return torch.device("xpu")
+            return torch.device("xpu", torch.xpu.current_device())
         else:
             return torch.device(torch.cuda.current_device())
 
@@ -304,7 +304,7 @@ def model_load(self, lowvram_model_memory=0):
             raise e
 
         if is_intel_xpu() and not args.disable_ipex_optimize:
-            self.real_model = torch.xpu.optimize(self.real_model.eval(), inplace=True, auto_kernel_selection=True, graph_mode=True)
+            self.real_model = ipex.optimize(self.real_model.eval(), graph_mode=True, concat_linear=True)
 
         self.weights_loaded = True
         return self.real_model
@@ -552,8 +552,6 @@ def text_encoder_device():
     if args.gpu_only:
         return get_torch_device()
     elif vram_state == VRAMState.HIGH_VRAM or vram_state == VRAMState.NORMAL_VRAM:
-        if is_intel_xpu():
-            return torch.device("cpu")
         if should_use_fp16(prioritize_performance=False):
             return get_torch_device()
         else: