Disable dynamic vram on wsl. (Comfy-Org#12706)

Author: comfyanonymous

comfy/model_management.py

@@ -180,6 +180,14 @@ def is_ixuca():
         return True
     return False
 
+def is_wsl():
+    version = platform.uname().release
+    if version.endswith("-Microsoft"):
+        return True
+    elif version.endswith("microsoft-standard-WSL2"):
+        return True
+    return False
+
 def get_torch_device():
     global directml_enabled
     global cpu_state

main.py

@@ -192,7 +192,7 @@ def execute_script(script_path):
 import comfy.memory_management
 import comfy.model_patcher
 
-if enables_dynamic_vram() and comfy.model_management.is_nvidia():
+if enables_dynamic_vram() and comfy.model_management.is_nvidia() and not comfy.model_management.is_wsl():
     if comfy.model_management.torch_version_numeric < (2, 8):
         logging.warning("Unsupported Pytorch detected. DynamicVRAM support requires Pytorch version 2.8 or later. Falling back to legacy ModelPatcher. VRAM estimates may be unreliable especially on Windows")
     elif comfy_aimdo.control.init_device(comfy.model_management.get_torch_device().index):