Support releases all unoccupied cached memory from XPU

Author: kwaa

execution.py

@@ -10,6 +10,8 @@
 import torch
 import nodes
 
+from model_management import xpu_available
+
 def get_input_data(inputs, class_def, unique_id, outputs={}, prompt={}, extra_data={}):
     valid_inputs = class_def.INPUT_TYPES()
     input_data_all = {}
@@ -206,6 +208,8 @@ def execute(self, prompt, extra_data={}):
             if torch.version.cuda: #This seems to make things worse on ROCm so I only do it for cuda
                 torch.cuda.empty_cache()
                 torch.cuda.ipc_collect()
+        elif xpu_available:
+            torch.xpu.empty_cache()
 
 
 def validate_inputs(prompt, item):