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Free QwenFunControlNet base_model reference in cleanup

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QwenFunControlNet.pre_run stashes the model's diffusion_model into
self.extra_args['base_model'], but ControlBase.cleanup never clears
extra_args. The diffusion_model reference therefore lingered between
sampling runs, blocking ComfyUI's model offload/eviction logic from
freeing the UNet and -- for multigpu -- holding one such reference per
per-device control clone (defeating the max_gpus pruning added in this
PR). Override cleanup to drop the entry; super().cleanup() already
recurses into multigpu_clones so each per-device clone pops its own.

Amp-Thread-ID: https://ampcode.com/threads/T-019e4a00-fe3d-76bd-a2f2-a8c8c4040082
Co-authored-by: Amp <amp@ampcode.com>
This commit is contained in:
Kosinkadink 2026-05-21 11:35:54 -07:00
parent adde1239b1
commit 963621603c
1 changed files with 4 additions and 0 deletions
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4
comfy/controlnet.py
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@ -357,6 +357,10 @@ class QwenFunControlNet(ControlNet):
super().pre_run(model, percent_to_timestep_function)
self.set_extra_arg("base_model", model.diffusion_model)
def cleanup(self):
self.extra_args.pop("base_model", None)
super().cleanup()
def copy(self):
c = QwenFunControlNet(None, global_average_pooling=self.global_average_pooling, load_device=self.load_device, manual_cast_dtype=self.manual_cast_dtype)
c.control_model = self.control_model