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#!/usr/bin/env python3
import argparse
import os
import json
from safetensors import safe_open
from collections import defaultdict
parser = argparse.ArgumentParser(description='Process model with specified path')
parser.add_argument('--model-path', '-m', help='Path to the model')
args = parser.parse_args()
model_path = os.environ.get('MODEL_PATH', args.model_path)
if model_path is None:
parser.error("Model path must be specified either via --model-path argument or MODEL_PATH environment variable")
# Check if there's an index file (multi-file model)
index_path = os.path.join(model_path, "model.safetensors.index.json")
single_file_path = os.path.join(model_path, "model.safetensors")
if os.path.exists(index_path):
# Multi-file model
print("Multi-file model detected")
with open(index_path, 'r') as f:
index_data = json.load(f)
# Get the weight map (tensor_name -> file_name)
weight_map = index_data.get("weight_map", {})
# Group tensors by file for efficient processing
file_tensors = defaultdict(list)
for tensor_name, file_name in weight_map.items():
file_tensors[file_name].append(tensor_name)
print("Tensors in model:")
# Process each shard file
for file_name, tensor_names in file_tensors.items():
file_path = os.path.join(model_path, file_name)
print(f"\n--- From {file_name} ---")
with safe_open(file_path, framework="pt") as f:
for tensor_name in sorted(tensor_names):
tensor = f.get_tensor(tensor_name)
print(f"- {tensor_name} : shape = {tensor.shape}, dtype = {tensor.dtype}")
elif os.path.exists(single_file_path):
# Single file model (original behavior)
print("Single-file model detected")
with safe_open(single_file_path, framework="pt") as f:
keys = f.keys()
print("Tensors in model:")
for key in sorted(keys):
tensor = f.get_tensor(key)
print(f"- {key} : shape = {tensor.shape}, dtype = {tensor.dtype}")
else:
print(f"Error: Neither 'model.safetensors.index.json' nor 'model.safetensors' found in {model_path}")
print("Available files:")
if os.path.exists(model_path):
for item in sorted(os.listdir(model_path)):
print(f" {item}")
else:
print(f" Directory {model_path} does not exist")
exit(1)
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