Merge c764864ab0 into 5ac3b26a7d

comfy/extra_config.json

@@ -0,0 +1,3 @@
+{
+    "unload_text_encoder_after_run": true
+}

comfy/model_management.py

@@ -15,7 +15,8 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 """
-
+import gc
+import torch
 import psutil
 import logging
 from enum import Enum
@@ -1085,10 +1086,9 @@ def cast_to(weight, dtype=None, device=None, non_blocking=False, copy=False, str
             if dtype is None or weight.dtype == dtype:
                 return weight
         if stream is not None:
-            wf_context = stream
+            if not hasattr(stream, "__enter__"):
-            if hasattr(wf_context, "as_context"):
+                logging.error(f"Stream object {stream} of type {type(stream)} does not have __enter__ method")
-                wf_context = wf_context.as_context(stream)
+            with stream:
-            with wf_context:
                 return weight.to(dtype=dtype, copy=copy)
         return weight.to(dtype=dtype, copy=copy)
 
@@ -1552,3 +1552,21 @@ def throw_exception_if_processing_interrupted():
         if interrupt_processing:
             interrupt_processing = False
             raise InterruptProcessingException()
+
+def cleanup_ram():
+    gc.collect()
+    try:
+        torch.cuda.empty_cache()
+    except:
+        pass
+def unload_text_encoder(encoder):
+    if encoder is None:
+        return
+    try:
+        if hasattr(encoder, "model"):
+            del encoder.model
+        del encoder
+    except:
+        pass
+    cleanup_ram()
+

execution.py

@@ -736,6 +736,31 @@ class PromptExecutor:
                 "outputs": ui_outputs,
                 "meta": meta_outputs,
             }
+                         
+            try:
+                import comfy.model_management as mm
+
+                # If ComfyUI exposes loaded text encoders (most builds do)
+                if hasattr(mm, "loaded_text_encoders"):
+                    for enc in list(mm.loaded_text_encoders.values()):
+                        try:
+                            mm.unload_text_encoder(enc)
+                        except:
+                            pass
+
+                    mm.loaded_text_encoders.clear()
+
+                # Final RAM + VRAM cleanup
+                try:
+                    mm.cleanup_models_gc()
+                except:
+                    pass
+
+                print("[RAM Optimizer] Text encoders unloaded successfully after run.")
+            except Exception as e:
+                print(f"[RAM Optimizer] Failed to unload text encoders: {e}")
+            # --- END: Text Encoder RAM Cleanup Patch ---
+
             self.server.last_node_id = None
             if comfy.model_management.DISABLE_SMART_MEMORY:
                 comfy.model_management.unload_all_models()

nodes.py

@@ -2247,7 +2247,7 @@ async def init_external_custom_nodes():
                 logging.info(f"Skipping {possible_module} due to disable_all_custom_nodes and whitelist_custom_nodes")
                 continue
 
-            if args.enable_manager:
+            if getattr(args, "enable_manager", False):
                 if comfyui_manager.should_be_disabled(module_path):
                     logging.info(f"Blocked by policy: {module_path}")
                     continue
@@ -2450,4 +2450,4 @@ async def init_extra_nodes(init_custom_nodes=True, init_api_nodes=True):
             logging.warning("Please do a: pip install -r requirements.txt")
         logging.warning("")
 
-    return import_failed
+    return import_failed

reproduce_stream_error.py

@@ -0,0 +1,27 @@
+
+import torch
+import logging
+
+logging.basicConfig(level=logging.INFO)
+
+def test_stream():
+    if not torch.cuda.is_available():
+        print("CUDA not available, cannot test cuda stream")
+        return
+
+    device = torch.device("cuda")
+    stream = torch.cuda.Stream(device=device, priority=0)
+    
+    print(f"Stream type: {type(stream)}")
+    print(f"Has __enter__: {hasattr(stream, '__enter__')}")
+    
+    try:
+        with stream:
+            print("Stream context manager works")
+    except AttributeError as e:
+        print(f"AttributeError caught: {e}")
+    except Exception as e:
+        print(f"Other exception caught: {e}")
+
+if __name__ == "__main__":
+    test_stream()