Override should_use_bf16 to avoid CUDA calls

comfy_integration/setup.py

@@ -86,6 +86,19 @@ def initialize_comfyui():
     # Ensure torch treats CUDA as unavailable on CPU‑only environment.
     import torch
     torch.cuda.is_available = lambda: False
++    # Additional CUDA stubs to prevent calls like torch.cuda.get_device_properties
++    class _DummyDeviceProps:
++        def __init__(self):
++            self.major = 0
++            self.minor = 0
++            self.total_memory = 0
++    def _dummy_get_device_properties(device):
++        return _DummyDeviceProps()
++    torch.cuda.get_device_properties = _dummy_get_device_properties
++    torch.cuda.device_count = lambda: 0
++    torch.cuda.current_device = lambda: 0
++    torch.cuda.get_device_name = lambda device: "cpu"
+
 
     # Apply patch to the external ComfyUI model_management before import.
     external_model_mgmt_path = os.path.join(APP_DIR, "comfy", "model_management.py")
@@ -158,8 +171,13 @@ def initialize_comfyui():
     model_mgmt.get_torch_device = _cpu_fallback_get_torch_device
     import importlib
     importlib.reload(model_mgmt)
-    
-    print("--- Environment Ready ---")
++    # Override should_use_bf16 to avoid any CUDA device property queries on CPU‑only systems.
++    def _safe_should_use_bf16(device, model_params=None):
++        """Return False unconditionally – no BF16 support on CPU‑only environment."""
++        return False
++    model_mgmt.should_use_bf16 = _safe_should_use_bf16
+ 
+     print("--- Environment Ready ---")
     
     print("✅ ComfyUI initialized with default attention mechanism.")