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Fix reshaping lora application (#14031)

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* ModelPatcherDyanmic: purge stale vbar allocs on force cast

* ModelPatcherDynamic: restore backups before load

If doing a clean reload, mutative changes (lora application) could be
applied on-top of the already loaded weight. Restore from backup
unconditionally so that the new load is clean.
This commit is contained in:
rattus
2026-05-22 02:47:16 +10:00
committed by GitHub
parent aab41a9ddb
commit 03e511862e
1 changed files with 15 additions and 8 deletions
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23
comfy/model_patcher.py
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@ -1613,6 +1613,16 @@ class ModelPatcherDynamic(ModelPatcher):
#use all ModelPatcherDynamic this is ignored and its all done dynamically.
return super().memory_required(input_shape=input_shape) * 1.3 + (1024 ** 3)
def restore_loaded_backups(self):
restored = self.model.model_loaded_weight_memory
for key in list(self.backup.keys()):
bk = self.backup.pop(key)
comfy.utils.set_attr_param(self.model, key, bk.weight)
for key in list(self.backup_buffers.keys()):
comfy.utils.set_attr_buffer(self.model, key, self.backup_buffers.pop(key))
self.model.model_loaded_weight_memory = 0
return restored
def load(self, device_to=None, lowvram_model_memory=0, force_patch_weights=False, full_load=False, dirty=False):
@ -1629,7 +1639,7 @@ class ModelPatcherDynamic(ModelPatcher):
num_patches = 0
allocated_size = 0
self.model.model_loaded_weight_memory = 0
self.restore_loaded_backups()
with self.use_ejected():
self.unpatch_hooks()
@ -1716,6 +1726,9 @@ class ModelPatcherDynamic(ModelPatcher):
force_load=True
if force_load:
if hasattr(m, "_v"):
comfy_aimdo.model_vbar.vbar_unpin(m._v)
delattr(m, "_v")
force_load_param(self, "weight", device_to)
force_load_param(self, "bias", device_to)
else:
@ -1773,13 +1786,7 @@ class ModelPatcherDynamic(ModelPatcher):
freed = 0 if vbar is None else vbar.free_memory(memory_to_free)
if freed < memory_to_free:
for key in list(self.backup.keys()):
bk = self.backup.pop(key)
comfy.utils.set_attr_param(self.model, key, bk.weight)
for key in list(self.backup_buffers.keys()):
comfy.utils.set_attr_buffer(self.model, key, self.backup_buffers.pop(key))
freed += self.model.model_loaded_weight_memory
self.model.model_loaded_weight_memory = 0
freed += self.restore_loaded_backups()
return freed