diff --git a/cuda_malloc.py b/cuda_malloc.py
new file mode 100644
index 000000000..fae5d73cf
--- /dev/null
+++ b/cuda_malloc.py
@@ -0,0 +1,97 @@
+# from comfyui with minor modification
+import os
+import importlib.util
+import subprocess
+
+from modules import cmd_args
+
+#Can't use pytorch to get the GPU names because the cuda malloc has to be set before the first import.
+def get_gpu_names():
+    if os.name == 'nt':
+        import ctypes
+
+        # Define necessary C structures and types
+        class DISPLAY_DEVICEA(ctypes.Structure):
+            _fields_ = [
+                ('cb', ctypes.c_ulong),
+                ('DeviceName', ctypes.c_char * 32),
+                ('DeviceString', ctypes.c_char * 128),
+                ('StateFlags', ctypes.c_ulong),
+                ('DeviceID', ctypes.c_char * 128),
+                ('DeviceKey', ctypes.c_char * 128)
+            ]
+
+        # Load user32.dll
+        user32 = ctypes.windll.user32
+
+        # Call EnumDisplayDevicesA
+        def enum_display_devices():
+            device_info = DISPLAY_DEVICEA()
+            device_info.cb = ctypes.sizeof(device_info)
+            device_index = 0
+            gpu_names = set()
+
+            while user32.EnumDisplayDevicesA(None, device_index, ctypes.byref(device_info), 0):
+                device_index += 1
+                gpu_names.add(device_info.DeviceString.decode('utf-8'))
+            return gpu_names
+        return enum_display_devices()
+    else:
+        gpu_names = set()
+        out = subprocess.check_output(['nvidia-smi', '-L'])
+        for line in out.split(b'\n'):
+            if len(line) > 0:
+                gpu_names.add(line.decode('utf-8').split(' (UUID')[0])
+        return gpu_names
+
+blacklist = {"GeForce GTX TITAN X", "GeForce GTX 980", "GeForce GTX 970", "GeForce GTX 960", "GeForce GTX 950", "GeForce 945M",
+                "GeForce 940M", "GeForce 930M", "GeForce 920M", "GeForce 910M", "GeForce GTX 750", "GeForce GTX 745", "Quadro K620",
+                "Quadro K1200", "Quadro K2200", "Quadro M500", "Quadro M520", "Quadro M600", "Quadro M620", "Quadro M1000",
+                "Quadro M1200", "Quadro M2000", "Quadro M2200", "Quadro M3000", "Quadro M4000", "Quadro M5000", "Quadro M5500", "Quadro M6000",
+                "GeForce MX110", "GeForce MX130", "GeForce 830M", "GeForce 840M", "GeForce GTX 850M", "GeForce GTX 860M",
+                "GeForce GTX 1650", "GeForce GTX 1630", "Tesla M4", "Tesla M6", "Tesla M10", "Tesla M40", "Tesla M60"
+                }
+
+def cuda_malloc_supported():
+    try:
+        names = get_gpu_names()
+    except Exception:
+        names = set()
+    for x in names:
+        if "NVIDIA" in x:
+            for b in blacklist:
+                if b in x:
+                    return False
+    return True
+
+
+parser = cmd_args.parser
+args, _ = parser.parse_known_args()
+
+
+if not args.cuda_malloc:
+    try:
+        version = ""
+        torch_spec = importlib.util.find_spec("torch")
+        for folder in torch_spec.submodule_search_locations:
+            ver_file = os.path.join(folder, "version.py")
+            if os.path.isfile(ver_file):
+                spec = importlib.util.spec_from_file_location("torch_version_import", ver_file)
+                module = importlib.util.module_from_spec(spec)
+                spec.loader.exec_module(module)
+                version = module.__version__
+        if int(version[0]) >= 2: #enable by default for torch version 2.0 and up
+            args.cuda_malloc = cuda_malloc_supported()
+    except Exception:
+        pass
+
+def init_cuda_malloc():
+    if args.cuda_malloc and not args.disable_cuda_malloc:
+        env_var = os.environ.get('PYTORCH_CUDA_ALLOC_CONF', None)
+        if env_var is None:
+            env_var = "backend:cudaMallocAsync"
+        else:
+            env_var += ",backend:cudaMallocAsync"
+
+        os.environ['PYTORCH_CUDA_ALLOC_CONF'] = env_var
+        print(f"Setup environment PYTORCH_CUDA_ALLOC_CONF={env_var}")
diff --git a/modules/cmd_args.py b/modules/cmd_args.py
index 2ebe267cc..8b9a7b6e6 100644
--- a/modules/cmd_args.py
+++ b/modules/cmd_args.py
@@ -9,6 +9,9 @@ parser.add_argument("-f", action='store_true', help=argparse.SUPPRESS)  # allows
 parser.add_argument("--update-all-extensions", action='store_true', help="launch.py argument: download updates for all extensions when starting the program")
 parser.add_argument("--skip-python-version-check", action='store_true', help="launch.py argument: do not check python version")
 parser.add_argument("--skip-torch-cuda-test", action='store_true', help="launch.py argument: do not check if CUDA is able to work properly")
+cm_group = parser.add_mutually_exclusive_group()
+cm_group.add_argument("--cuda-malloc", action='store_true', help="Enable cudaMallocAsync (enabled by default for torch 2.0 and up).")
+cm_group.add_argument("--disable-cuda-malloc", action="store_true", help="Disable cudaMallocAsync.")
 parser.add_argument("--reinstall-xformers", action='store_true', help="launch.py argument: install the appropriate version of xformers even if you have some version already installed")
 parser.add_argument("--reinstall-torch", action='store_true', help="launch.py argument: install the appropriate version of torch even if you have some version already installed")
 parser.add_argument("--update-check", action='store_true', help="launch.py argument: check for updates at startup")
diff --git a/webui.py b/webui.py
index 421e3b833..3713750c3 100644
--- a/webui.py
+++ b/webui.py
@@ -10,6 +10,10 @@ from modules import initialize
 startup_timer = timer.startup_timer
 startup_timer.record("launcher")
 
+from cuda_malloc import init_cuda_malloc
+init_cuda_malloc()
+startup_timer.record("cuda_malloc")
+
 initialize.imports()
 
 initialize.check_versions()