scripts/verify_index_tensors.py

#!/usr/bin/env python3
import json, safetensors, os, sys, tqdm

index_filename, = sys.argv[1:]

with open(index_filename) as fh:
    index = json.load(fh)

weight_map = index['weight_map']

filenames = set(weight_map.values())
total_size = sum([os.stat(fn).st_size for fn in filenames])

PASS = True

if total_size != index['metadata']['total_size']:
    PASS = False
    print(f"Wrong total_size in index. stored={index['metadata']['total_size']} correct={total_size}")

for filename in tqdm.tqdm(filenames, desc=index_filename, unit='f'):
    f = safetensors.safe_open(filename, framework='pt')
    index_keys = set([k for k, fn in weight_map.items() if fn == filename])
    file_keys = set(f.keys())
    if file_keys != index_keys:
        PASS = False
        for in_file in (file_keys - index_keys):
            print()
            print('{in_file} present in {filename} but not {index_filename}')
            print()
        for in_index in (index_keys - file_keys):
            print()
            print('{in_file} present in {index_filename} but not {index_filename}')
            print()

if PASS:
    print('index content matches safetensors content.')
    sys.exit(0)
else:
    print('index content MISMSATCHES safetensors content.')
    sys.exit(-1)