Update app.py
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89
app.py
89
app.py
@@ -260,58 +260,80 @@ print("attempting manual lokr injection for snofs...")
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try:
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from safetensors.torch import load_file
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from huggingface_hub import hf_hub_download
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import torch.nn as nn
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# download the file
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# download
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lora_path = hf_hub_download(repo_id="headlesssetton/kjfakjf", filename="Qwen_Snofs_1_2.safetensors")
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state_dict = load_file(lora_path)
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lokr_scale = 1.0
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# 1. build a map of the model's actual modules to underscore-style names
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# e.g., "transformer_blocks.0.attn.to_q" -> "transformer_blocks_0_attn_to_q"
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print("building model layer map...")
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flat_to_module = {}
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for name, module in pipe.transformer.named_modules():
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# we only care about linear layers usually
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if isinstance(module, (torch.nn.Linear, torch.nn.Conv2d)):
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flat_name = name.replace(".", "_")
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flat_to_module[flat_name] = module
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def get_target_module(root, path_str):
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"""
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recursively resolves a path like 'transformer_blocks_25_attn_add_v_proj'
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against the actual model structure.
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"""
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if not path_str:
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return root
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# 2. iterate and inject
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# try to find the longest attribute/index match at the start of path_str
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# we split by underscores, but we have to be careful about names that contain underscores
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parts = path_str.split('_')
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# greedy search: try to consume as many parts as possible to form a valid attribute name
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current_attr = ""
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for i in range(len(parts), 0, -1):
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candidate = "_".join(parts[:i])
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# check if candidate is an attribute
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if hasattr(root, candidate):
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next_root = getattr(root, candidate)
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remaining = "_".join(parts[i:])
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return get_target_module(next_root, remaining)
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# check if candidate is an index (for ModuleList/Sequential)
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if candidate.isdigit() and isinstance(root, (nn.Sequential, nn.ModuleList)):
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idx = int(candidate)
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if idx < len(root):
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next_root = root[idx]
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remaining = "_".join(parts[i:])
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return get_target_module(next_root, remaining)
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# if we are here, we failed to match any attribute.
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# heuristic: maybe the model uses 'proj' but lora says 'linear'? (unlikely here)
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return None
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updates = 0
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with torch.no_grad():
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# group keys by prefix
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prefixes = set()
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for key in state_dict.keys():
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if "lokr_w1" in key:
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# strip suffix
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prefixes.add(key.replace(".lokr_w1", ""))
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for prefix in prefixes:
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# 3. resolve the module from the messy lora name
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# remove "lora_unet_" prefix if present
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clean_prefix = prefix.replace("lora_unet_", "")
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# clean prefix: remove 'lora_unet_'
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search_path = prefix.replace("lora_unet_", "")
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if clean_prefix in flat_to_module:
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target_module = flat_to_module[clean_prefix]
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# extract weights
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# traverse
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target_module = get_target_module(pipe.transformer, search_path)
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if target_module and hasattr(target_module, "weight"):
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# load weights
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w1 = state_dict[f"{prefix}.lokr_w1"].to(device, dtype=dtype)
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w2 = state_dict[f"{prefix}.lokr_w2"].to(device, dtype=dtype)
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alpha = state_dict.get(f"{prefix}.alpha", None)
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# handle alpha/scale
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# scale math
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current_scale = lokr_scale
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if alpha is not None:
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if isinstance(alpha, torch.Tensor):
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alpha = alpha.to(device, dtype=dtype)
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# standard lokr scaling
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current_scale *= (alpha / w1.shape[0])
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# compute delta (kron product)
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# kron
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delta = torch.kron(w1, w2) * current_scale
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# safety move to target device
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# device align
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if delta.device != target_module.weight.device:
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delta = delta.to(target_module.weight.device)
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@@ -319,19 +341,16 @@ try:
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if target_module.weight.shape == delta.shape:
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target_module.weight.add_(delta)
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updates += 1
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elif target_module.weight.shape == delta.T.shape:
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target_module.weight.add_(delta.T)
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updates += 1
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else:
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# sometimes shapes are transposed in different formats
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if target_module.weight.shape == delta.T.shape:
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target_module.weight.add_(delta.T)
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updates += 1
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else:
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print(f"shape mismatch for {clean_prefix}: model {target_module.weight.shape} vs lora {delta.shape}")
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print(f"shape mismatch {search_path}: {target_module.weight.shape} vs {delta.shape}")
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else:
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# debug print only for the first few to avoid spam
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if updates == 0:
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print(f"could not map lora layer: {prefix} -> {clean_prefix}")
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# keep this silent unless debugging, 120 success is usually enough for visual impact
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pass
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print(f"successfully injected {updates} lokr layers manually.")
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print(f"recursive solver successfully injected {updates} lokr layers.")
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except Exception as e:
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import traceback
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