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ComfyUI's executor only runs nodes reachable from output nodes, and a node is only an output node if its class sets OUTPUT_NODE = True. As written, an UnloadModel / UnloadAllModels placed at the end of a workflow (the documented 'unload after encoding / at the end of a workflow' usage) with its output left unconnected was silently never executed, leaving models resident in VRAM.
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I only just now see that I have made these changes on an older version hahahaha |
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ComfyUI's executor only runs nodes reachable from output nodes, and a node is only an output node if its class sets OUTPUT_NODE = True.
As written, an UnloadModel / UnloadAllModels placed at the end of a workflow (the documented 'unload after encoding / at the end of a workflow' usage) with its output left unconnected was silently never executed, leaving models resident in VRAM.
So TLDR is that sometimes it will not unload models because it considers it a node that isn't necessary to be run.